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A double gas source automatic selection valve

An automatic selection, dual gas source technology, applied in valve details, multi-way valves, valve devices, etc., can solve the problems of selection valves not working properly, safety and hidden dangers, etc., and achieve the effect of simple structure, safe use and small pressure chamber

Inactive Publication Date: 2016-06-15
唐宗华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent application CN101699109A discloses a dual gas source selection valve, which requires manual adjustment of the knob to select the gas passage. If the selection is improper, the selection valve will not work normally and there will be a great potential safety hazard

Method used

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  • A double gas source automatic selection valve
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Embodiment

[0022] The spring resistance critical value range is set to 2.4kpa-2.5kpa, the low-pressure valve is designed to open normally, the natural gas intake pressure 2kpa (low-pressure gas) passes through the low-pressure valve, and its pressure 2kpa is less than the spring resistance critical value, and the spring acts on the membrane to push the high-pressure seal Cone, the lower cone surface of the high-pressure sealing cone is connected with the sealing ring to close the high-pressure valve, and the natural gas passes through the pressure reducing valve from the gas outlet to complete the low-pressure gas delivery process; the inlet pressure of liquefied gas is 2.8kpa (high-pressure gas), and its pressure is 2.8 kpa is greater than the critical value of spring resistance, driving the lower cone surface of the high-pressure sealing cone to leave the sealing ring 1, the high-pressure sealing cone pushes the membrane to move upward, the high-pressure valve opens, and drives the low-p...

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Abstract

The invention discloses an automatic double-gas-source selection valve which comprises a valve body base, a valve core and an upper valve body cover, wherein a low-pressure valve is opened normally, low-pressure gas passes through the low-pressure valve; the pressure of the low-pressure gas is lower than resistance of a spring; the spring works on a high-pressure sealing cone; the lower cone surface of the high-pressure sealing cone is connected with a sealing ring I, so that a high-pressure valve is closed; the pressure of high-pressure gas is higher than the resistance of the spring and works on a leather film so as to drive the lower cone surface of the high-pressure sealing cone to get away from the sealing ring I, so that the high-pressure valve is opened; a low-pressure sealing cone is driven to move upward, so that the upper cone surface of the low-pressure sealing cone is connected with a sealing ring II, and the low-pressure valve is closed. The automatic double-gas-source selection valve has the advantages of simple structure, safety to use, automatic selection of gas passageways and no need of manual control.

Description

technical field [0001] The invention relates to the technical field of gas appliance valves, and more specifically relates to the technology of automatically selecting passages for exchanging high-pressure gas and low-pressure gas. Background technique [0002] At present, domestic or industrial gas mainly includes natural gas and liquefied petroleum gas. With the continuous improvement of natural gas and liquefied petroleum gas transmission technology, but the output pressure and gas volume are different, dual-purpose or multi-purpose gas appliances generally need to select appropriate valves according to the gas source. When it is necessary to change the type of gas, it is necessary to re-purchase new gas appliances or carry out technical transformation, resulting in increased costs and waste of social resources. At the same time, dealers cannot predict the sales of a certain gas appliance, and the variety is backlogged or out of stock. For households or industries, there ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/10F16K31/126
CPCF16K11/022F16K31/1262
Inventor 唐宗华
Owner 唐宗华
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