Pressure reducing valve is getting more and more widely used in high-rise building water supply system. In order to ensure the normal operation of the system, the experiences of strengthening the sense of responsibility, mastering the operational operation, troubleshooting practice knowledge and related basic management requirements are summarized. Keywords: pressure reducing valve, water supply system, security system -------------------------------------- ------------------------------------------ With the construction of water supply and drainage technology in our country Development, nearly 10 years of various types of imported and domestic self-developed water supply valve (proportional, adjustable piston, adjustable membrane, airbag adjustable ...) has been in high-rise buildings, and even super high-rise building water supply system Be widely used. Practice shows that: Compared with the traditional intermediate tank decompression system, the decompression valve water supply decompression protection system has the advantages of small occupation space, stable technical characteristics, flexible pressure ratio adjustment, long service life and convenient maintenance and management. However, how to protect the normal operation of the water supply system of the high-rise building pressure relief valve, to enable the users of high-rise buildings to obtain a good water supply environment and to ensure that the fire fighting facilities (fire hydrants and spraying) Water supply system, scientific and orderly maintenance and management. Therefore, familiar with the working principle of the system, mastering the correct management and maintenance, operation and troubleshooting knowledge and skills, is particularly important for those engaged in the management and maintenance of high-rise buildings. The author is now on the valve water supply system maintenance management experience from the following three aspects to make a summary. 1 To strengthen the sense of responsibility for maintenance and management? From a macro point of view, property management and maintenance operators should first familiarize themselves with the general situation and types of high-rise building water supply systems and master the performance characteristics of different water supply systems, fire protection systems and even production water supply systems in buildings. Understand the system of hydraulic balance operation mechanism, set the technical conditions, in particular, to be familiar with the application of a variety of decompression components in the system principle, performance requirements. To grasp the system's normal performance indicators, when the system fails, such as some water pressure instability, rapid fluctuations, and even accompanied by negative pressure suction, or decompression system, the key section intermittent howling noise, Not only from the rational aspects to analyze and determine the reasons to guide the practice of correct thinking; the same time, we must strengthen the sense of responsibility to maintain management, improve professional skills, training system debugging, operation, emergency troubleshooting. Management of each high-rise buildings for the water facilities, so that owners (users) benefit. 2 operation, troubleshooting practice knowledge (1) to avoid the retention of dirt, debris into the decompression valve decompression security system. Decompression system of new or renovation project pipe network, it is likely to leave sand, hemp, debris. Put into operation before the general should be washed with water to meet the cleaning requirements, the final installation of pressure reducing valve and filter cartridge, so as to avoid the debris flow into the valve, to eliminate the phenomenon of pressure relief valve card. After entering the work of the system, to ensure the flow of pressure relief system is smooth or not, and set in the system on the ability of the filter is closely related to the filter, such as debris was seriously adsorbed debris, it will affect the work of the valve, it is necessary to Filter regular inspection, timely removal of contamination. Practice has shown that this work must be carried out 2 to 3 months, some adjustable (spring, film) valve, the main valve or pilot valve set their own filters, also need to regularly wash the filter. ? (2) 1 with 1 prepared decompression valve group should be rotated on a regular basis. Most of the high-rise building life decompression valve water supply system, is set to vertical water supply, generally located in each of the water district on the Explorer. Taking into account the reliable use of water for many users of safety (residential each partition has dozens of households to hundreds, public buildings such as hotels, restaurants, each district has dozens of rooms ... ...), the design of the valve should be two sets of parallel Installation (1 for 1). Both sides of decompression passage are supplemented by gate valve or butterfly valve, which can open or close any decompression passage. In order to ensure that the two parallel relief valve passages can work normally, once in a month, regular exchange takes place once a day, Fouling, decompression valve components will be stuck stuck. ? (3) should be promptly ruled out the gas in the pipeline. When the air into the decompression pipe network or pipe network with the pressure changes when the gas precipitation from the water, then the user pressure in the region is extremely unstable; in the water supply is the most disadvantaged water pressure is abrupt change, and sometimes false Peak pressure, sometimes pumping water, and pipe network will be accompanied by percussive sound. Produce this phenomenon, will affect the gas water heater, electric water heaters and other stable work, will be destroyed in serious cases; for a variety of toilet water inlet pipe destructive power is also great, especially the current commonly used composite connecting hose, which The intensity is poorer, so the incident of squirting often happens; Some meters can not measure correctly, appear the user does not need water, the water meter will keep turning. To prevent such accidents, roof water tank should be checked whether the water storage head elevation meet, if not meet the water tank outlet will produce water spin, air intake. Exclude this fault can be adjusted within the water level controller, the lowest water level elevation, experience shows that the general minimum water level from the outlet should be not less than 0.3m. Can also be opened repeatedly set in the partition, decompression system on both sides of the pressure gauge bleed cock, the air has entered the network slowly discharged. If the above measures are taken, the above phenomenon also occurs in some water-useers below the zenith terminals, and automatic exhaust devices can be installed at these locations. ?
Applicable area 53~92m²
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