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Energy-saving decompression gas supply method for natural gas and its equipment

A technology for natural gas and pressure relief, which is applied to container discharge methods, pressure vessels, fixed-capacity gas storage tanks, etc., can solve the problem of "unclean unloading of skid trucks, and achieve the effect of improving utilization efficiency and simple process."

Inactive Publication Date: 2003-03-05
HUASHEN GAS BURNING IND TIANJIN
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design an energy-saving pressure relief gas supply method and device for natural gas to solve the long-standing problem of "unclear unloading" of skid trucks

Method used

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  • Energy-saving decompression gas supply method for natural gas and its equipment
  • Energy-saving decompression gas supply method for natural gas and its equipment
  • Energy-saving decompression gas supply method for natural gas and its equipment

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Embodiment

[0012] Embodiment: a kind of energy-saving pressure relief gas supply method of natural gas (see figure 2) , including two-stage pressure regulation and two-time temperature compensation process of natural gas skid truck unloading, which is characterized in that a nozzle pressure relief bypass with valve is connected in parallel at the same time as the two-stage pressure regulation and two-time temperature compensation process, when The pressure inside the skid car is reduced to 15kgf / cm 2 At this time, open the valve of the pressure relief bypass to start the nozzle, so that the pressure inside the skid car will increase from 15kgf / cm 2 down to 5kgf / cm 2 , thus leaving about 60Nm in the skid car 3 of natural gas.

[0013] A device cooperating with the above natural gas energy-saving pressure relief gas supply method (see figure 2) , including a two-stage series pressure regulator 3 connected to the output end of the natural gas skid truck 1 unloading and a related two-t...

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Abstract

The present invention relates to an energy-saving decompression gas-supplying method of natural gas and its equipment, including the processes of two-stage pressure regulation and twice temperature compensation of carriage-unloading of natural gas skid carriage, and is characterized by that at the same time of two-stage pressure regulation and twice temperature compensation a jet-pipe decompression by-pass with valve is parallelly-connected. Said invention possesses the following advantages: its process is simple, easy to implement and effective, said carriage-unloading mode can greatly raisethe utilization rate of skid carriage, and can solve the problem of that the skid carriage can not be cleanly unloaded.

Description

(1) Technical field: [0001] The invention relates to a gas supply method for combustible gas, in particular to an energy-saving pressure relief gas supply method and device for natural gas. (two) background technology: [0002] Ordinary natural gas skid car unloading is to enter the pipeline network after the pressure is adjusted by the pressure regulator, such as Figure 1 Shown, through the process of temperature compensation twice and pressure regulation twice. The first pressure adjustment, pressure from 200kgf / cm 2 down to 40kgf / cm 2 , the second pressure adjustment pressure from 40kgf / cm 2 down to 2kgf / cm 2 . When the residual pressure inside the skid car is about 15kgf / cm 2 , the pressure regulator group cannot start again, so the pressure inside the skid car is 15kgf / cm 2 , at this time there are about 300Nm 3 The natural gas cannot be unloaded, 200kgf / cm 2 Natural gas skid capacity is about 3000Nm 3 , which increases the shipping cost by about 10%. (3) Co...

Claims

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Application Information

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IPC IPC(8): F17C7/00
Inventor 范宝琦沈毅
Owner HUASHEN GAS BURNING IND TIANJIN
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