SU1222978A1 - Boiler plant - Google Patents

Description

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The invention relates to a power system and can be used to recover the heat of exhaust gases from metallurgical and other furnaces.

The purpose of the invention is to increase the reliability of the installation by eliminating water hammer in the separator.

The drawing is a schematic diagram of a boiler plant.

The boiler plant contains a cyclone separator-1 with water 2 and steam 3 volumes connected via a downstream 4 and a lifting pipe 5 to the heating surface 6 heated by gases, a steam exhaust pipe 7 connected to a sensor The level of water in the separator 1, the descending pipe 4 is provided with an ejector 10 with a nozzle 11 connected to a supply pipe 12 equipped with a supply regulator 13 connected to the steam pressure sensor 14 in the separator. 1, with the upper part of the vapor volume 3 of the latter additionally connected to its steam discharge pipe 7 by an overflow line 15 equipped with a float regulator 16, a device 17 for preventing steam reverse flow and a regulator

18 expense. In addition, the cyclone separator 1 is equipped with a drainage pipe 19, a purge line 20, a level control line 21 and a safety valve 22, and the downcomer 4 is provided with a check valve

.23, the vapor pipe 7 - pressure regulator 24, and the float reg. humor 16 - float 25.

Boiler installation works as follows.

The feed water through conduit 12 is fed into the standpipe 4 through the ejector 10, thanks to which the temperature of the water entering the heating surface 6 decreases and the temperature difference between the gases and

IN THE DRY.

When the unit is operating in the steam-generating mode, the drainage pipe

19 separator 1 is closed. If the feedwater flow rate exceeds the steam flow rate, the water level in the separator 1 increases, and the steam flow controller 8 connected to the sensor

9 water levels, reduces the flow rate, which leads to an increase in pressure

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in the separator 1. According to the signal from the steam pressure sensor 14 in the separator 1, the power regulator 13 reduces the flow of feed water. 5 With a sharp increase in heat generation in the heating surface 6, the pressure in the separator rises until the safety valve 22 triggers, THAT leads to the release of some of the water from the separator 1, reducing the water in it and increasing the steam consumption regulator 8 through the steam exhaust pipe 7 ( the pressure in the separator 1 decreases and normal operation is restored.

When opening the steam discharge pipe 19 of the separator 1, the water level and pressure in the latter fall, which leads to an increase in the feedwater supply, and the installation goes into a combi; nirovanny or water heating mode.

If sufficient heat is supplied through the heating surface 6 to evaporate part of the water, the installation operates in a combined mode of generating steam and hot water. If the amount of heat is not enough to form steam, then the separator 1 is filled with water, and the installation goes into hot water mode, which allows for the fuller utilization of the heat of gases.

With the transition to the hot-water mode of the Plant, the water in the separator 1 fills its steam volume 3, smoothly displacing the load into the vapor-removal pipe -7 through the flow line 15. The steam displacement continues until the float 25 of the regulator 16 emerges and when the installation switches to steam or combined operation mode, the controller 16 also provides with the help of the device 17 the reverse current prevention and the steam from the steam exhaust pipe 7 to the steam volume 3 of the separator 1 through the reverse flow knuyu line 15. The flow regulator 18 on the line 15 makes it possible to select the optimum mode displacement volume of steam from the steam separator 3 1 steam discharge pipe 7 conductive tube while translating a hot water installation in operation. This operation is performed during commissioning tests of the installation after installation.

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The boiler room is installed due to the connection of the steam volume 3 of the separator 1 to the steam discharge pipe 7 by means of an overflow line 15 equipped with a float regulator 16, a device 17 that prevents the reverse flow of steam and a regulator

1222978. 4

18 flow rate, allows ocynjecTBHTii transition from steam to combined and hot water (works and back without hydraulic pumps in the separator, which increases the reliability of the plant as a whole.

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Compiled by Y. Nesterov Editor I. Derbak Tehred M. Morgental Proofreader M. Maksimishinets

Order 1695/39 Circulation 398 Subscription VNIIPI USSR State Committee

on affairs of inventions and discoveries I13035, -Moscow, Zh-35, Raushsk nab, d. 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (2)

1. BOILER PLANT, comprising a cyclone separator with water and steam volumes connected respectively through a downpipe and a riser to a gas-heated heating surface, a steam outlet pipe with a steam flow regulator associated with a water level sensor in the separator, and the downpipe is equipped with an ejector with a nozzle connected to a feed pipe equipped with a power regulator 'connected to a steam pressure sensor in the separator, characterized in that, in order to increase the reliability of the installation by eliminating roudarov in the separator, the upper part of the steam volume cyclonic separator is further connected to its labor of steam-+: baa bypass line provided with a float control device and preventing reverse current of steam. _Q £ 2. Installation according to π, 1, with the fact that the bypass line is equipped with a flow regulator.