SU1013706A1 - System for feeding water into boiler - Google Patents

Abstract

WATER SUPPLY SYSTEM IN THE BOILER, containing parallel pipelines with high-pressure heaters, connected through a common mixing section to the supply lines of the boiler with control valves, the flow sections of the pipelines are supplied with feed pumps and are connected in the zone between the latter and the jumpers, characterized in that, in order to increase efficiency by eliminating throttling on control valves, the jumper is provided with a valve, and the pipelines between the heaters and the general see The active section is additionally connected by bypass lines with regulating bodies to the supply lines of the boiler behind their regulating valves.

Description

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The invention relates to a power system and can be used, in particular, in high-capacity boilers.

There are known systems for supplying water to a boiler, which contain feed pumps installed on pipelines equipped with control valves and connected to supply lines of the boiler 1.

The disadvantage of these systems is the slow shutdown of supply lines in the event of emergency situations, which reduces the reliability of their operation.

The closest to the proposed technical entity is a water supply system to the boiler, containing parallel pipelines with high-pressure heaters, connected through a common mixing section to the boiler supply lines with regulating valves, the feed sections of the pipelines are supplied with feed pumps and are connected in between the last and heaters jumper 2.

A disadvantage of the known system is the high resistance on the control valves, which reduces the efficiency of the boiler;

The aim of the invention is to increase efficiency by eliminating throttling on control valves.

This goal is achieved by the fact that in the water supply system to the boiler, which contains parallel pipelines with high-pressure heaters, are connected through a common mixing area to the supply lines of the boiler with control valves, with supply pipe sections equipped with feed pumps and connected in the zone between last and heaters jumper, the latter is equipped with a valve, and the pipelines between the heaters and the common mixing section are additionally connected by bypass lines with adjustable ruyuschimi conductive bodies to the supply lines of the boiler for regulating valves.

The drawing shows the system of water supply to the boiler.

The water supply system to the boiler contains parallel pipelines 1 and 2 with high pressure heaters 3 and 4, combined into separate groups and connected through a common mixing section 5 to the boiler supply lines 6 and 7, equipped with control valves 8 and 9. Supply sections pipelines 1 and 2 are equipped with feed pumps 10 and 11 and are interconnected by a jumper 12 having a valve 13.

The pipes 1 and 2 in the zone between the heaters 3, 4 and the mixing section 5 are connected by bypass lines 14 and 15 equipped with regulating bodies 16 and 17 to the supply lines 6 and 7 behind the regulating valves 8 and 9. Pipelines 1 and 2 In the location zone along Q the heaters 3 and 4 have bypass lines 18 and 19 connected through hydraulic valves 20, 21 and 22, 23.

On pipes 1 and 2, respectively, before and after jumper 12, as well as behind heaters 3 and 4, valves 5 24–26 and 27–29 are installed.

Jumper 12 is connected by line 30, fitted with a valve 31, to the mixing section 5.

During normal operation of the system, the valves 13, 26, 29 and 31 and the control valves 8 and 9 are closed and the remaining valves are open. The flow of water from each feed pump 10 and 11 passes through the heaters 3, 4 and through the bypass lines 14 and 15 is fed into the boiler. 5 In the event that one of the pumps, for example, pump 10, is turned off, the high-speed valve 13 opens, then the valves 26, 29 open and the control valves 8, 9 and the valves 16, 17 and 24 close. , and the distribution of water flow by flow is carried out by control valves 8 and 9.

When one group of heaters, for example heaters 3, fails, high-speed hydraulic valves 20 and 21 are activated, and water is bypassed for some time along the bypass line 18. At this, valves 13, 29, 31 and control valves 8 and 9 Q start to open and / or close valves 16, 17 and 25.

In this mode, cold water passes from pumps 10 and 11 through pipelines 1 and 2, jumper 12 and line 30, is displaced with hot water in the total mixing section 5 and is fed at the same temperature along lines 6 and 7 to the boiler.

The presence of bypass lines connected to the pipelines behind the heaters and to the supply lines, during normal operation, allows water to be directed into the boiler, control valves by the mine, which reduces the throttling losses in the latter and increases the efficiency of the boiler.

Claims (1)

WATER SUPPLY SYSTEM FOR THE BOILER containing parallel pipelines with high pressure heaters, connected through the common mixing section to the boiler feed lines with control valves, the feed sections of the pipelines are equipped with feed pumps and connected in the area between the latter and the heaters by a jumper, characterized in that, with In order to increase efficiency by eliminating throttling on control valves, the jumper is equipped with a valve, and the pipelines between the heaters and the common mixer In this section, additional bypass lines with regulatory bodies are connected to the boiler supply lines behind their control valves. § ω s