A heating method and device for a pilot-operated pressure regulating valve
A heating method and pilot technology, applied in the direction of pipeline heating/cooling, pipe/pipe joint/pipe fitting, pipeline system, etc., can solve problems such as consumption and large energy, achieve no moving parts, eliminate potential safety hazards, and good safety performance Effect
Active Publication Date: 2015-09-23
PIPECHINA SOUTH CHINA CO
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Problems solved by technology
However, these physical heating methods cannot fundamentally eliminate the hidden danger of "ice blockage", and also consume a large amount of energy
Method used
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Embodiment Construction
[0038] Embodiment. The specific embodiment of the present invention is described with this example and the present invention is described further. This example is a special heating method and device for a pilot-operated pressure regulating valve, and its composition is as follows figure 2 As shown, it includes pilot monitoring valve 1 (RMG650), pilot pressure regulating valve 2 (RMG512), emergency shut-off valve 3 (RMG711), dual-channel pilot gas heater 9, pressure sensor devices and other ancillary equipment. This example does not change the arrangement and combination of pilot-operated monitoring valve 1, pilot-operated pressure regulating valve 2 and emergency shut-off valve 3 in the skid-type pressure regulating device, and the respective functions of these devices will not change. VTGH-DP The vortex circuit 6, the VTGH outlet ball valve 7, and the pilot air inlet ball valve 8 are connected to the skid-type pressure regulating device, and the pilot valve pilot I4 and pil...
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The invention provides a heating method and device for a pilot pressure regulating valve of a compressed natural gas pilot operated relief valve director. The device adopts the structure that a pipeline, which is arranged between an emergency cut off valve (3) and a pilot operated control valve (1), is divided into two ways, wherein one way is connected with a two-channel pilot gas fuel heater (9) through a pilot gas inlet ball valve (8), and the other way is connected with the two-channel pilot gas fuel heater (9) through an eddy current loop (6); the pilot operated control valve (1) and a pilot pressure regulating valve (2) are connected with an air outlet in sequence, the director I (4) and director II (5) of the pilot operated control valve (1) and the pilot pressure regulating valve (2) are connected together and are then connected with a heating loop (10) and a heating loop (11) of the two-channel pilot gas fuel heater (9) respectively; the two-channel pilot gas fuel heater (9) is connected with the air outlet through a VTGH outlet ball valve (7). The device provided by the invention has no moving part, is maintenance-free, and higher in reliability, needs no power, and has better safety performance.
Description
technical field [0001] The invention relates to a heating method and device for a pilot pressure regulating valve of a pilot pressure regulating valve commander of compressed natural gas. It relates to the technical fields of valves, fluid heaters with heat sources in general, heat exchange and piping systems. Background technique [0002] With the continuous improvement of the national economy, the demand for natural gas in various domestic industries is also increasing day by day. The use of high-pressure natural gas pipelines to transport natural gas is the only way to transport large quantities of natural gas on land. For long-distance natural gas transport, high-pressure pipelines are generally used, with a pressure of up to 8-10MPa. Natural gas users can be mainly divided into industrial users and household users. These users are usually located in cities. For the safety of the city and the convenience of users, after natural gas is transported through high-pressure l...
Claims
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IPC IPC(8): F16L53/00F16L55/07F17D5/00
Inventor 赵吉诗张王宗尹克江冯少广李睿李荣光张鑫杨合平刘国豪朱清云
Owner PIPECHINA SOUTH CHINA CO