RU2450215C1 - External boiler - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: external boiler comprises a hydraulically and thermally insulated body with the following components installed in it - a stack base with a device for soot cleaning and a flow restrictor, an atmospheric gas burner device with a gas pipeline, an automatically stop and control valve, a direct and a return lines of the boiler and tubes. The atmospheric gas burner device is additionally equipped with an evaporation reduction gear, which is connected to the atmospheric gas burner device with the help of the gas pipeline by means of the automatic stop and control valve, and with the help of the tubes - with the direct and return boiler lines.

EFFECT: reduced cost of heat production and expansion of functional capabilities.

2 dwg

Description

FIELD OF THE INVENTION

The invention relates to the production of hot water boilers, in particular to outdoor boilers using two types of fuel: primary and backup, and can be used in atmospheric burners burning natural gas, backup fuel, liquefied propane-butane mixture supplied under pressure, without changes in the cross sections of the nozzles of the gas burner device.

State of the art

A boiler plant is known, comprising a boiler equipped with a contact air heater and an economizer, connected in parallel to the supply and exhaust lines to the heating paths of the heat network and the surface heat exchanger, the heating path of which is connected to the contact air heater and equipped with a flow regulator, and the economizer is in communication with the boiler supply line, the installation also contains air temperature sensor (see AC SU 1666855, class F22D 1/36).

The disadvantage of this boiler installation is the high cost of its production, limited functionality.

Known water-heating universal boiler installation, consisting of a water heating boiler containing a gas burner device, a gas duct, nozzles for heating and return water, an upper drum, in which a hot water supply system is mounted, made in the form of a multi-pass high-speed water-water heater containing bundles of brass tubes separated at the ends of the chamber and arranged sequentially from the bottom up (see Pat. RU No. 2133925, class F24H 1/22).

The disadvantage of this boiler plant is the high cost of generating heat.

The closest in technical essence and the achieved positive effect and accepted by the authors for the prototype is an outdoor hot water boiler containing a thermally insulated body with an atmospheric gas burner device with a gas pipe placed inside it, an automatic shut-off and control valve, a boiler heat exchanger, a three-way valve with direct and return lines, a chimney, while at the base of the chimney there is a hatch for cleaning soot and a condensate pipe, and the building's heating system contains a vertical riser connected to the straight line of the boiler, a deaeration-expansion tank, distributing risers with heating devices, a return line to the heating system, a circulation pump, a mud filter (see Condensing hot-water boiler, RGU-M1 operating manual Ca 2.574.023. РЭ OJSC “Starorusspribor Plant”, 175200, Staraya Russa, Novgorod Region, Mineralnaya St. 24).

The disadvantage of this boiler is its high cost and the cost of heat production, low efficiency, the inability to use primary and backup fuel.

Disclosure of invention

The objective of the invention is to develop an outdoor boiler with wide functional capabilities, namely the ability to use two types of fuel: primary and reserve, which burns natural gas in atmospheric gas burner devices, reserve fuel, liquefied propane-butane mixture supplied under pressure, without change sections of the nozzles of the gas burner device, only by reducing the pressure of the gas propane-butane mixture, while maintaining the non-volatility of the atmospheric gas burner device, and lower costs for heat production, due to the additional installation of a 2-stage gearbox-evaporator.

The technical result that can be obtained using the present invention is to reduce the cost of heat production and expand the functionality.

The technical result is achieved using an external boiler containing a thermally insulated body with a chimney base placed inside it with a soot cleaning device and a flow restrictor, an atmospheric gas burner device with a gas pipe, an automatic shut-off and control valve, the direct and return lines of the boiler and pipe, atmospheric gas burner device is additionally equipped with a reducer-evaporator, which is connected to the atmospheric gas burner device using gas ode by the automatic shut-off and regulating valve, and via the tubes with the forward and reverse lines boiler.

Thus, the technical result is achieved due to the additional installation of a 2-stage gearbox-evaporator heated by an external boiler, while controlling the amount of supply, for example, gas propane-butane mixture to the atmospheric gas burner device, is carried out by an automatic shut-off and control valve of the second stage, controlled by a spring acting on the lever with the valve, when the gas pressure drops in the submembrane space of the second stage of the gearbox-evaporator.

Brief Description of the Drawings

Figure 1 is given a boiler outdoor installation, with a gearbox-evaporator, a General view.

In Fig.2, the same gearbox-evaporator.

The implementation of the invention

The outdoor boiler 1 contains an atmospheric gas burner device 2, a reducer-evaporator 3 connected to the gas line 4 of the atmospheric gas burner 2 by means of an automatic shut-off valve 5, while the reducer-evaporator 3 is connected using pipes 6 and 7 with forward and reverse lines (not indicated ), respectively, of boiler 1, and pipe 8 with a cylinder 9 of liquefied propane-butane mixture, while gas pipeline 4 contains a manometer 10, a shut-off valve 11, which is installed with the ability to turn off the supply of natural gas when switching to ropan-butane mixture, also the boiler 1 contains a thermometer 12 for monitoring the temperature of the coolant, a working temperature sensor 13, a temperature limit sensor 14, an automatic shut-off and control valve 15, a chimney 16 with a device for cleaning soot (not shown), and a gearbox-evaporator 3 contains a cavity A of the first stage, a cavity B of the second stage and a cavity C for the coolant, an inlet 16 for the liquid phase of the propane-butane mixture, a valve seat 17 of the cavity of the first stage, valve 18 of the cavity A of the first stage, lever 19 of the valve 18 of the cavity the first stage, the membrane 20 of the cavity A of the first stage, the spring 21, the channel 22 connecting the cavity A and B of the first and second stage, the outlet fitting 23, the membrane 24, the two-arm lever 25 with the valve 26, the spring 27, the adjusting screw 28, the nozzle 29, connecting the transmembrane cavity of the membrane 24 with the atmosphere.

The outdoor boiler operates as follows.

The shut-off valve 11 for supplying natural gas to the atmospheric gas burner 2 is closed, and the automatic shut-off valve 5 is open, the atmospheric gas burner 2 is turned on, and the propane-butane liquid mixture from the cylinder 9 through the tube 8 enters through the inlet 16 through the valve seat 17 of the cavity A of the first stage, the open valve 18 of the cavity A of the first stage, having heated up from the coolant entering the reducer-evaporator 3 through the tube 6 and removed from the reducer-evaporator 3 through the tube 7 to the return line of the boiler 1, evaporates I and through channel 22, valve 26 enters the cavity In the second stage, under the adjusted pressure through the outlet nipple 23 it is sent to the atmospheric gas burner 2, where, mixed with atmospheric air, it burns, then the flue gases are removed after passing through a heat exchanger (not shown) the chimney 16 into the atmosphere, while the pressure in the cavity A of the first stage is regulated by a spring 21, acting through the membrane 20 on the lever 19, the opening or closing valve 18, and the pressure in the cavity In the second stage is regulated when adjusting the wines ohm 28, acting on the spring 27, the membrane 24, the two-arm lever 25, which opens and closes the seat 17 of the valve 26, the nozzle 29, of a certain size, serves to communicate the supmembrane space of the membrane 24 with the atmosphere, and when the temperature of the coolant controlled by the thermometer 12 reaches the level installed operating temperature sensor 13 automatic shut-off and control valve 15, reduces or stops the flow of propane-butane mixture into the main burner of atmospheric gas burner 2, and when triggered, the sensor limit temperature 14 shut-off control valve 15 is closed, while control pressure for propane-butane mixture or natural gas is carried out in 10 gauge.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- cheaper heat production;

- expansion of functionality through the use of two types of fuel: primary and backup.

Claims (1)

An outdoor boiler comprising a thermally insulated body with a chimney base placed inside it with a soot cleaning device and a flow restrictor, an atmospheric gas burner device with a gas pipe, an automatic shut-off and control valve, the direct and reverse lines of the boiler and pipe, characterized in that the atmospheric gas burner device additionally equipped with a reducer-evaporator, which is connected to an atmospheric gas burner device using a gas pipeline by means of an automatic shut-off and control valve, and using tubes with direct and reverse lines of the boiler.

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