RU2365820C2 - Double-stage gas burner - Google Patents

Abstract

FIELD: heat-and-power engineering.

SUBSTANCE: invention relates to energetics, particularly to double-stage gas burner and can be used for burning of gaseous fuel in boiler of outside placement and other gas apparatus, located on air. Double-stage gas burner contains control unit of two-position shutter, sensor of temperature, draw, flame, supply-line gas, fire button with igniter and fire box, valve, main burner, nozzle of two-position shutter, switch, thermobimetallic plate. Burner is outfitted by automatic power controller, installed consistent before adjusting device in environment, containing in partition of body opening for gas discharge in volume 30-40% of maximal consumption, can also containing valve land with valve, implemented with ability of regulation of manometric system, increasing consumption of gas up to maximal at decrease of environment temperature.

EFFECT: invention provides simplification of design, reduction of overall dimensions.

2 dwg

Description

FIELD OF THE INVENTION

The invention relates to energy, in particular to a two-stage gas burners, and can be used for burning gaseous fuels in outdoor boilers and other gas devices located in the open air.

State of the art

Known nozzle assembly of the burner, comprising a housing with a guide plate mounted outside it and bent end bent at a predetermined angle relative to its plane towards the flow, while the plate from the side opposite the bent end is provided with a pivot axis perpendicular to the longitudinal axis of the body and its end bent at an angle 10-15 ° (see A.S. SU No. 989244, class F23D 14/60).

The disadvantage of this nozzle assembly is the insufficient mixing of gas with primary air.

Known two-stage gas burner containing a housing with holes for supplying and discharging gas from the gas regulator, a metal inner rod, an outer tube immersed in the coolant, a screw device for temperature control (see Temperature sensor. RGU-M1. Operation manual. Ca 2.574 .023.RE OJSC “Starorusspribor Plant”, 175200, Staraya Russa, Novgorod Region, Mineralnaya St., 24).

The disadvantage of this burner is the design complexity. The closest in technical essence and the achieved positive effect and adopted by the authors for the prototype is an atmospheric gas burner containing a gas regulator consisting of a control unit connected to a temperature sensor using a control channel, a control unit connected to a flame sensor, a draft control channel, with this it is equipped with a second gas regulator, consisting of a control unit connected to a temperature sensor and outdoor air, a control unit, while the second gas regulator the heater is installed with the possibility of parallel connection of the cavities of the control units and the outdoor temperature sensor by connecting to the control unit a second gas regulator, and the percentage of gas supply to the burner by both regulators is set by taps (see patent RU No. 2196939, CL. F23N 1/10, F23D 14/60, 2003).

The disadvantage of this burner is the lack of a signal to turn on / off the burner, depending on the operation of the circulation pumps and other electrical units of the heating system.

Disclosure of invention

The technical result that can be obtained using the present invention is to simplify the design, reduce the size, establish a constant connection with the ambient temperature with automatic control of the burner power depending on the temperature decrease.

The technical result is achieved using a two-stage gas burner containing a control device for the on-off damper, temperature sensors, draft, flame, gas, start button with igniter and firebox, tap, main burner, on-off damper nozzle, switch, thermo-bimetal plate. According to the invention, the burner is equipped with an automatic power regulator installed in series in front of the regulating device in the environment, containing a hole for gas flow in the volume of 30-40% of the maximum flow rate in the housing baffle, and also containing a valve seat with a valve configured to control the manometric system, increasing gas flow to maximum while lowering the ambient temperature.

Brief Description of the Drawings

Figure 1 shows a two-stage gas burner, a General view.

Figure 2 is the same as an automatic power controller.

The implementation of the invention

The two-stage gas burner consists of a control device 1 of the on-off valve 2, a temperature sensor 3, a draft sensor 4, a flame sensor 5, a network gas sensor 6, a start button 7, an igniter 8, a valve 9, a main burner 10, a furnace 11, an on-off valve 12 , nozzle 13, valve 14 of control device 1, valve seat 15, hand switch 16, thermobimetal plate 17, automatic power regulator 18 with a hole 19 of the first stage, valve 20 of the second stage, while the automatic power controller 18 is installed outside the insulated wall 21 of the boiler (not shown), and the remaining elements (not shown) of a two-stage gas burner are placed inside the boiler body for outdoor use, and consists of a pressure gauge system 22 with an elastic sensing element 23, body 24, cover 25 connecting the manometric system 22 with the housing of the adjusting spring 27, fixed at one end to the rod 28 with the lock washer 29, valve 20, kinematically connected with the elastic sensing element 23 through the rod 28 and interacting with the gray scrap 30 of the housing 24. All sensors (3, 4, 5, 6) are interconnected by impulse tubes (not marked).

A two-stage gas burner operates as follows.

Press the start button 7 and open the network gas sensor 6, the gas begins to flow into the igniter 8, which is then ignited, at the same time the gas through the pulse tubes through the nozzle 13 enters the temperature sensors 3, rod 4, flame 5 and into the submembrane space of the control device 1, if the above sensors are closed, the gas pressure in the submembrane and submembrane space of the control device 1 is equalized, open the valve 9, gas through the hole 19 of the automatic power controller 18 raises the valve 14 r of the regulating device 1 above the seat 15 and enters the main burner 10, where it burns, releasing heat to the furnace 11, at the same time, the on-off damper 2 moves upward and blocks the gas flow through the nozzle 12 into the supramembrane cavity of the regulating device 1, and at automatic ambient temperature the power regulator 18 will provide a flow of gas for combustion in the amount of 30-40% through the hole 19 and the annular gap between the valve 20 and the seat 30 of the housing 24, and when the ambient temperature changes below the value set with the threaded sleeve 26, the rotation of which changes the initial force of the adjusting spring 27, the pressure of the filler in the gauge system 22 decreases, acting on the elastic sensor element 23, on the opposite side, the pressure of the working medium (natural gas) acts on the elastic sensor element 23 , which is not more than 2 kPa, which is incommensurably less than the pressure developed by the filler of the gauge system 22, moving under the action of the adjusting spring 27, elastic the sensing element 23 through the rod 28 and the washer 29, relying on the threaded sleeve 26, the cover 25, transmits the movement to the valve 20, which rises above the seat 30 located in the housing 24, increases the flow rate of gas entering the gas burner, when the ambient temperature changes above the value set using the threaded sleeve 26, the rotation of which changes the initial force of the adjusting spring 27, increases the pressure of the filler in the gauge system 22, acting on the elastic sensor element 23, with the opposite On the other side, the pressure of the working medium (natural gas) acts on the latter, which is no more than 2 kPa, which is incommensurably less than the pressure developed by the filler of the gauge system 22, moving under the influence of the pressure difference, the elastic sensitive element 23 through the rod 28 and the washer 29 transmits the movement to the valve 20, which lowers to the seat 30, reduces the flow rate of gas entering the gas burner, when the negative ambient temperature disappears, the valve 20 is completely lowered to the seat 30, and the gas flow rate is h cut the hole 19 and the annular gap between the valve 20 and the seat 30 of the housing 24, providing a flow of gas for combustion in the amount of 30-40%, in case of emergency operation of the thrust sensors 4, flame 5 in the submembrane space of the control device 1, the gas pressure abruptly decreases, under the influence of weight the diaphragm actuator and the springs of the on-off valve 2, the valve 14 moves down, the gas through the nozzle 12 of the on-off valve fills the supranembrane space of the control device 1, the valve 14 covers the seat 15, the main burner 10 g it goes off, while the igniter 8 is on and gas through the network gas sensor 6 continues to flow into the nozzles 12 and 13, providing automatic control of the regulating device 1, if adjustment is necessary, turn on the manual switch 16, pressure will not be created in the submembrane space of the regulating device and regardless of temperature sensors 3, rod 4, flame 5, the regulating device 1 will be closed. With a correctly selected outdoor boiler, the safety and regulation elements will only work in emergency cases in terms of power to the building heating system, which ensures their durability.

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

- simplification of the design;

- reduction in size;

- establishing a permanent connection with the ambient temperature with automatic control of the burner power depending on the temperature decrease.

Claims (1)

A two-stage gas burner containing a control device for the on-off damper, temperature, draft, flame, network gas sensors, a start button with a pilot and a firebox, a tap, the main burner, an on-off damper nozzle, a switch, a thermo-bimetal plate, characterized in that the burner is equipped with an automatic power regulator installed sequentially in front of the control device in the environment, containing a hole for gas flow in the volume of 30-40% of the maximum ode, and having a valve seat with a valve adapted to control the manometric system, increasing the gas flow rate to the maximum when the ambient temperature decreases.

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