SU174568A1 - DEVICE FOR REGULATING GAS WORK - Google Patents

Description

Devices are known for (regulating the operation of a gas water heater with automatic protection against poisoning by gas and products of its combustion during environmental use, including gas valves with a gas-distributor and main burner and flame detectors connected to gas pipelines with the igniter and main burner. However, incomplete automatic protection is achieved and regulation.

In order to automate the process of operation and smoothness of regulation, the proposed device is equipped with a pneumatic memory unit located in the shut-off valve and connected to the igniter, main burner, pressure and water temperature sensors. In addition, a detector is installed on the impulse line between the shut-off valve and the pull sensor.

The drawing shows the scheme of the described device.

The device includes an igniter /, a main burner 2, a valve-type cut-off valve 3, a flame sensor 4, a thrust sensor 5, a pneumatic unit of the memory located in the shut-off valve and consisting of a pilot relay 6, a submembrane cavity 7, nozzles 8 and the throttle 9, the water pressure sensor 10, the water temperature sensor // and the detector 12, which is located on the pulse line between the slam-shut valve and the draft sensor.

By pressing the start button 13 gas is fed through the submembrane cavity of the valve valve 3 and the detector 14 to the igniter /, which is lit. Gas simultaneously through the throttle (hydraulic resistance) 15 and the gas pipeline enters the upper chamber of the gas inverter relay 16, and when the nozzle of the bimetal valve heated from the ignitor is covered by a normally open flame sensor 4 of the nozzle-bimetal valve, the pressure of the gas in the inverter chamber of the inverter rises sharply , and the membrane with a rigid center 17, moving, shifts the two-position spring-loaded damper

18 from the drainage nozzle 19 to the nozzle of the pressure source 20. In the overmembrane cavity 21 of the shut-off valve 3 connected through the drainage nozzle 19 to the atmosphere, the pressure drops and the diaphragm with weight 22 under the action of

the gas pressure in the submembrane cavity 23 moves away from the valve seat-shut-off valve. Thus, the automatic is triggered at the launch. After that, release the start button and the opening of the valve 24, the gas is supplied to the main

burner 2, which ignites from the igniter.

At the moment of actuation of the shut-off valve

on start at the same time and the relay

igniter 6 due to pressure increase

an independent parallel power supply of the igniter 1 is carried out.

When one of the monitored violations appears (in this case flame extinction or violation of the string), the flame sensor 4 or the flame sensor 5 triggers (opening the nozzle), the pressure in the iodine membrane cavity 7 of the ignition relay 6 drops sharply, and the spring-loaded lid covers coil 8. At the same time, the gas relay-inverter 16 is triggered, whose cavity 25 is connected via detector 12 to the submembrane cavity of the pilot relay €, the spring-loaded gate 18 is shifted by the spring from the nozzle 20 dreiazhioe pressure on the nozzle 19, the cavity 21 iadmembranna klaoapa-stripper 5, being associated with the pressure source through nozzle pressure source 20, is filled with a gas, and the membrane with the load 22 under the weight of seat covers shut-off valve.

Thus, in case of violation of the parameters for which protection is implemented (t ha, flame), the gas supply is blocked both on the main burner and on the igniter.

Two-way control, implemented in the proposed scheme, is performed by opening or covering the nozzles of the respective sensors (in this case, the water temperature sensor 11 with the adjusting screw 26 and the water pressure sensor 10, which are associated with the pneumatic memory unit).

When opening the sensor nozzles, the supramembrane cavity of the gas inverter relay communicates with the atmosphere. As a result, the gas supply is stopped only at the main burner, since, due to the presence of the detector 12 and throttles 9, in the form of a gap between the casing and the pilot relay stem, opening the nozzles of the adjustable parameters sensors relieves pressure only from the submembrane cavity 25 of the gas relay and ivertor 16, and the submembrane cavity of the igniter relay 6 remains (UNDER pressure and gas continues to flow to the igniter. When the nozzles of the adjustable parameters sensors are closed, the pressure in the padmembrane cavity 25 of the gas inverter-relay will increase due to gas iatekani

through the valve 24 and the shut-off valve in the described sequence, vp delivers gas to the main burner.

Subject invention

A device for regulating the operation of a gas water heater with an automatic protection against gas poisoning and its combustion products during operation, including gas pipelines with a pilot light and an OS-1UVIO burner of a membrane-type shut-off valve, flame sensors and ti, characterized in that automation of the process of work and smoothness of regulation;

a memory located in the shut-off valve and connected to the igniter and the main burner, with pressure and water temperature sensors, and on the impulse line between the shut-off valve and the draft sensor

detector.

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