SU1121537A1 - Boiler unit - Google Patents

Abstract

THE BOILER INSTALLATION, containing the boiler, communicated by supply and discharge lines with the consumer and equipped with a contact economizer and air heater with trays and irrigation devices, water heater with hot water supply, .. / 3. , and, ШПШл married and flow controller with actuators and control sensor, characterized in that, in order to improve the efficiency of heat utilization of flue gases and simplify the design, the water heater is hot, it is installed under the irrigating device , the latter’s pallet is connected to the heater of the air preheater, the pallet of which is in turn communicated with the irrigating device of the nominal, and the executive bodies of the flow regulator are installed on the connecting lines Dons irrigated with devices and control .datchik formed as a temperature sensor disposed in the outlet line of the boiler.

Description

13 .

2) 22 The invention relates to a power system and can be used in carbonated boilers. Known boiler installation, containing a boiler connected to a consumer and equipped with a contact air heater and economizer, and a heat exchanger surface, the heated path of which is connected to a contact economizer, the last condensate collection connected to the supply line of the boiler t 3 "The disadvantage of the known installation is Reduced efficiency due to an increase in the amount of heat used to heat the air in cases of reduced water leakage from the heat supply system. Also known as a boiler plant. Single comprising a boiler, reported under boiling water and boiling tap lines to the consumer and provided with contact and eco nomayzerom heater pallet and irrigated water preheater devices and hot water supply with a flow regulator ASIC enforcement agencies and the control sensor. The contact economizer and water heater pallets communicate with each of their irrigating devices through the surface of the heat exchangers C 2 3. In this installation, tap water that goes after heating to a hot water supply is supplied to the air preheater pan, which leads to an increase in its salinity and oxygen saturation. due to active contact with blast air and partial evaporation. Due to the loss of temperature pressure in the walls of surface heat exchangers, it is impossible to reduce the temperature of the flue gases to values close to the temperature of the blast air, which leads to heat loss rf condensate from the flue gases. A disadvantage of the installation is also an increased consumption for own needs due to the fact that when the amount of blast air and exhaust gases decreases, the amount of condensate circulating in the economizer and air heater circuits does not decrease. In addition, the presence of two circulation circuits with included in NEs, surface heaters complicate the design of the installation. The purpose of the invention is to increase the efficiency of use, heat of flue gases and simplify the design. The goal is achieved by the fact that in a boiler plant containing a boiler, communicated by supply and discharge lines to the consumer and equipped with a contact economizer and air heater with pallets and irrigation devices, a hot water heater, and a flow regulator, with actuators and a sensor , a hot water water heater is installed under the irrigator of the economizer, the latter's pan is connected to the irrigator of the air preheater, the pan of which in turn communicates ene with oroshayuischm economiser device, wherein actuators torus flow regulator mounted on lines compounds pallets irrigated devices, and the control sensor is a temperature sensor disposed in the outlet line of the boiler. The drawing shows a diagram of the proposed boiler plant. The installation has an inlet and outlet lines and 2 with consumer 3 (heating network / boiler 4 path, equipped with contact air heater 5 and economizer 6. Economizer 6 tray 7 is connected to condensate collector 8 connected via pump 9, deaerator 10 and pump 11 with boiler supply line 1. 4. A hot water heater 12 is placed under the irrigator unit 13 of the economizer 6. The heater 12 is provided with an inlet magnetic water treatment apparatus 14 at the inlet. Economizer 6 pallet 7 is connected to the irrigation unit 15 air heater 5 by line 16 with pump 17. Air heater pallet 18 is communicated in turn with irrigator 13 of economizer 6 by line 19 with pump 20. The installation also contains a regulator 21, flow with actuators 22 installed on lines 16 and 19, and a temperature sensor 23 located in the outlet line 2 of the boiler 4.

The boiler plant works barely.

The flue gases of the boiler 4 operating on natural gas enter the economizer 6 and heat the water flowing through the heat exchange beam of the preheater 12 of the hot water supply. Condensavg, released from the flue gases as a result of their deep cooling and having a temperature of 55-60 ° C, serves HacocqM 17 from the pan 7 to the irrigation device 15 of the air preheater 5, in which it heats and moistens the air entering the boiler 4. The cooled condensate from air heater pallet 18 is retracted via line 19 to irrigator 13 of economizer 6 to cool boiler flue gases 4. Flow of water supplied to irrigation devices I3 and 15 through lines 16 and 19 is adjusted by means of the executive bodies 22 of flow regulator 21 up exhibiting a signal which arrives from the sensor network 23 temperatursh water outlet line 2 of the boiler 4. For example, when reducing the load of the boiler 4 reduce the consumption of gases and the leaving water temperature in the outlet line 2. The regulator. 21 consumption in this case reduces the consumption of condensate along lines 16 and 19, preventing the temperature of the flue gases at the outlet from the economy

Mayser 6, while the degree of heat utilization of flue gases does not change.

The condensate from the pallet 7 of the economizer 6 is poured into the condensate collector 8, from where it is supplied with the help of pumps 9 and 11 through the deaerator 10, as needed, into the supply line 1 of the boiler 4 for make-up.

Thus, due to the implementation of an economizer with irrigated heat exchange: the surface of the preheater and the connection of the pallets of the economizer and the air preheater to the air heaters and the economizer, respectively, increases the degree of heat utilization of the flue gases during maximum condensation of the water vapor contained in them, which eliminates the need for boiler plant in an external water source.

Quality regulation of the flow of water supplied to irrigation

25 devices, allows to reduce the temperature of flue gases at variable operating modes of the boiler, which increases the efficiency of its operation. The flue gas temperature can be lowered to values close to the initial temperature of the blast air, which significantly increases the efficiency of the unit, especially in the winter period.

Claims (1)

A BOILER INSTALLATION, comprising a boiler communicated with supply and exhaust lines with a consumer and equipped with a contact economizer and an air heater with pallets and irrigation devices, a hot water heater and a flow regulator with actuators and a control sensor, characterized in that, in order to increase the efficiency of utilization flue gas heat and simplify the design, the hot water heater is installed under the economizer’s irrigation device, the pan of the latter connected to the irrigation device of the air heater, the pallet of which is in turn communicated with the irrigation device of the economizer, and the executive bodies of the flow controller are installed on the lines connecting the pallets to the irrigation devices, and the control sensor is made in the form of a temperature sensor located in the boiler discharge line.