Double-air source selection valve

A dual air source and selection valve technology, applied in the field of selection valve, can solve the problems of complicated air passage, large volume, large pressure drop, etc., and achieve the effects of convenient and reliable selection, small pressure cavity, and improved stability.

CN101699109AInactive Publication Date: 2010-04-28PROCOM ELECTRIC APPLIANCES SHANGHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-04-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a double-air source selection valve, which comprises a valve body (1). The double-air source selection valve is characterized in that: a valve chamber (9) of the valve body (1) is provided with a high heat value fuel-gas inlet bin (10) and a lower heat value fuel-gas inlet bin (11), wherein the high heat value fuel-gas inlet bin (10) and the lower heat value fuel-gas inlet bin (11) are provided with gas outlets communicated with the valve chamber (9), and the insides of both are respectively provided with a sealing washer (12) which can block the corresponding gas outlet; the two sealing washers (12) are simultaneously and fixedly arranged on a driving rod (13); the driving rod (13) is connected with a turn-knob rod (15) of a main body arranged in the valve chamber (9) through a driving device (14); one end of the turn-knob rod (15) extends out of the valve chamber (9) and is provided with a turn knob (17); the other end of the turn-knob rod (15) positioned in the valve chamber (9) is connected with a valve core (16); and one end of the valve core (16) extending out of the valve body (1) is provided with a double-air source nozzle (18). The double-air source selection valve has the advantages of simple structure and small volume.
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Description

technical field

[0001] The invention relates to a gas appliance, in particular to a gas appliance that can use both high calorific value gas (such as liquefied petroleum gas) and low calorific value gas (such as natural gas and biogas, etc.), specifically a dual gas source gas appliance. Selector valve used. Background technique

[0002] At present, with the continuous improvement of transportation technology and the increasing shortage of oil resources, natural gas, biogas and other low calorific value gases have gradually entered people's daily life, and the single energy source in cities is being gradually broken by the multi-energy supply system. At the same time, it has become possible to connect the gas supply pipelines of coal gas, natural gas, liquefied petroleum gas, biogas and other energy sources. People can choose the appropriate gas to use according to market price changes and gas supply conditions. Taking the gas heater as an example, in the past, it was a sin...

Examples

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 1-12 shown.

[0026] A dual gas source selection valve, comprising a valve body 1, on which a high calorific value air inlet 2, a low calorific value air inlet 3, a control gas air inlet 4, a control ODS air inlet 5, a control Use main gas outlet 6, high calorific value ODS outlet 7 and low calorific value ODS outlet 8, such as figure 1 As shown, the high calorific value air inlet 2 and the low calorific value air inlet 3 communicate with the output port corresponding to the dual gas source pressure reducing valve 20, and the gas air inlet 4 for control and the ODS air inlet 5 for control correspond to the control valve 21 The gas outlets are connected, the main gas outlet 6 for control is connected to the air inlet of the control valve 21, the high calorific value air inlet 2, the low calorific value air inlet 3, the gas air in...