بھاپ ڈیسپرہیٹنگ اور ڈیکمپریشن ڈیوائس کا اصول اور استعمال
1. استعمال کریں بھاپ desuperheating اور decompression آلہ حرارتی نظام میں بھاپ کے ابتدائی پیرامیٹرز کو کم کرنے کے لیے استعمال کیا جاتا ہے - درجہ حرارت، اور دباؤ - کو صارف کے لیے مطلوبہ پیرامیٹرز پر۔
2. ساخت کی مختصر تفصیل بھاپ ڈیسپر ہیٹنگ اور ڈیکمپریشن ڈیوائس ڈیکمپریشن سسٹم، ڈیسپر ہیٹنگ سسٹم، اور حفاظتی تحفظ کے آلے پر مشتمل ہے۔
The correct decompression process is realized by the condensation of the decompression valve and the orifice plate. The decompression stage is determined by the difference between the new steam pressure and the steam pressure after decompression. Usually, the pressure of the steam is reduced by about half after each stage of throttling. The function of the throttle plate of the pressure-reducing valve is to reduce the wear of the throttle parts of the pressure-reducing valve and reduce the noise of the steam flow.
The steam desuperheating system is a multi-hole radial water spray desuperheater with mechanical atomizing nozzles. There are two types of desuperheating water systems, the water supply system composed of the water supply regulating valve and the water supply system composed of the water supply distribution valve. The desuperheating water is injected into the mixer through the regulating valve or water distribution valve. Due to the action of the water column pressure in front of the nozzle and the high-speed steam flow at the throat section of the mixer, the desuperheating water is pulverized into water mist and evaporates quickly and completely.
The safety protection device adopts a set of impulse safety valves and main safety valve device or spring safety valves and lever safety valves. When the steam pressure after decompression and temperature reduction exceeds the allowable value, the steam is discharged to the atmosphere to keep the steam pressure in the pipe within the operating value, thereby ensuring the safe operation of the device.
The action principle of the impulse safety device is: when the steam pressure exceeds the operating value, the steam pressure under the disc of the impulse safety valve overcomes the sealing force added by the heavy hammer, so that the disc is opened, and the steam is discharged into the atmosphere so that the steam pressure is reduced. When the main safety valve is closed, the steam in the upper space of the valve piston is discharged through the impulse safety exhaust.
3. کمیشننگ، آپریشن، اور دیکھ بھال
Before the installation of the whole device, the user must install the gate valve for shutting off steam and the steam trap and other facilities before and after the device according to the actual needs of users. Before putting it into operation, in order to prevent the dirt from entering the device and causing the hole to be blocked, the pipeline before the device must be carefully flushed. After flushing, open the pressure{{0}}reducing valve to 20 percent opening, press the safety valve to death with a heavy hammer, open the trap, and then open the desuperheating water valve to check whether the desuperheating system is normal, and check the back heating pipe. At this time, it is best to use a bypass The steam supply preheats the whole device with a steam pressure of not more than 0.02-0.05MPa, and the preheating time is not less than 30 minutes. After preheating, the gate valve is gradually opened, and the pressure is increased at a speed of 0.1-015MP/min. At the same time, the decompression is controlled. Valve and water supply regulating valve or water supply distribution valve, so that the outlet steam parameters rise steadily, reach and stabilize within the specified range.
When the pressure is raised to 50 percent of the rated pressure, lift the lever of the impulse safety valve by hand to check the flexibility and tightness of its action, and set the safety valve at the specified pressure. The trap should also be put into the rated pressure to avoid the accumulation of water in the pipe and the leakage of the light guide flange. The installation, adjustment, maintenance, and maintenance of the thermal regulation system and thermal measuring instruments and circuits shall be carried out in accordance with the relevant specifications and manuals. ; This device should be checked and calibrated regularly to eliminate problems found during maintenance and operation. Regularly check the opening and closing flexibility of the safety valve. Carefully lift the lever of the impulse safety valve to check it. , The valve disc, valve seat, lining seat, and other parts of the water supply regulating valve and water supply distribution valve should be repaired in time, because excessive clearance is one of the reasons for vibration and leakage.
The water spray desuperheating system should regularly check the mechanical atomizing nozzles, and if the small holes are found to be blocked or corroded, they should be dealt with in time.