Design method of natural gas pipeline compressor standby unit

A technology for natural gas pipelines and backup units, which is applied to the design of backup units for natural gas pipeline compressors, can solve the problems of not being able to reflect the reliability of the pipeline system as a whole, and failing to comprehensively consider the influence of line valve chamber failures on the reliability of the pipeline system, thereby improving the reliability of the pipeline system. Utilization rate, the effect of reducing investment

Inactive Publication Date: 2018-05-29
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the design method of backup units for natural gas pipeline compressors is usually limited to the analysis of the impact of unit failure in a single compressor station on the availability of the entire compressor station or the study of unit backup schemes from the perspective of hydraulic systems and economics, without comprehensive consideration of line parts, wear and tear, etc. The influence of the crossing part and the failure of the valve chamber on the reliability of the pipeline system cannot reflect the reliability of the pipeline system as a whole

Method used

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  • Design method of natural gas pipeline compressor standby unit
  • Design method of natural gas pipeline compressor standby unit
  • Design method of natural gas pipeline compressor standby unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1, taking the design output of 22 billion cubic meters per year as an example, the configuration scheme of the compressor units of each compressor station in the pipeline system is shown in Table 1.

[0054] Table 1 The unit operation plan and backup comparison and selection plan with a design output of 22 billion cubic meters per year

[0055]

[0056] The specific calculation process is as follows:

[0057]Step 1. The production availability is taken as the reliability parameter, and the target value is ≥1.

[0058] Step 2. According to the design output of 22 billion cubic meters per year, determine the configuration scheme of the pipeline compressor unit through the hydraulic calculation results, see Table 1.

[0059] Step 3. Analyze the task functions of the China-Russia Eastern Route Pipeline System. The main functions are as follows:

[0060] Line: connect the station and the valve room, and play the role of airtight transportation at the same time; ...

Embodiment 2

[0142] Example 2, taking the output volume of 30 billion cubic meters per year as an example, the configuration scheme of the compressor units of each compressor station in the pipeline system is shown in Table 10.

[0143] Table 10 Unit operation scheme and backup comparison scheme with a design output of 30 billion cubic meters per year

[0144]

[0145] After calculation using the above steps, the calculation results are shown in Tables 11-13.

[0146] Table 11 Calculation results of the pipeline system drop after the output volume is 30 billion cubic meters per year and one unit fails in one compressor station

[0147] serial number

Failure station

Gas transmission volume (billion cubic meters / year)

Decrease percentage / %

1

1# compressor station

322

15.3

[0148] serial number

Failure station

Gas transmission volume (billion cubic meters / year)

Decrease percentage / %

2

3# compressor station

320

...

Embodiment 3

[0158] Example 3, taking the transportation volume of 38 billion cubic meters per year as an example, the configuration scheme of the compressor units of each compressor station in the pipeline system is shown in Table 16.

[0159] Table 16 The number of units in operation with a design output of 38 billion cubic meters per year and the backup comparison and selection scheme

[0160]

[0161] Under the design output volume of 38 billion cubic meters per year, all compressor stations are fully in use, respectively for the full-line equipment scheme and no equipment scheme, and the unit scheme for separate station equipment (separate station equipment scheme 1 and separate station equipment scheme) 2) Carry out calculations, among which the equipment machine scheme 1 of the station separation is 1# compressor station, 3# compressor station, 5# compressor station, and 7# compressor station to set up spare unit scheme equipment machines, and the equipment machine scheme 2 of the...

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Abstract

The invention discloses a design method of a natural gas pipeline compressor standby unit. The method includes the steps of firstly, determining the reliability parameter of a pipeline system and thetarget value of the reliability parameter of the pipeline system; secondly, determining the configuration scheme of each compressor station compressor unit of the pipeline system; thirdly, analyzing the tasks and functions of the pipeline system; fourthly, determining the equipment composition of the pipeline system, and performing level decomposition on equipment according to set level to obtaina pipeline system composition list; fifthly, analyzing the working time and environment conditions of the pipeline system, and determining the task profile of the pipeline system; sixthly, making fault criteria; seventhly, acquiring a fault influence analysis table; eighthly, building the reliability model of a valve chamber, a station field and a circuit part; ninthly, building the reliability model of the pipeline system; tenthly, analyzing a maintenance scheme; eleventhly, calculating the gas delivery capacity of the pipeline system; twelfthly, performing reliability simulation. The methodhas the advantages that the reliability indexes of the pipeline system are comprehensively reflected, investment is reduced, and unit utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of pipeline systems, in particular to a design method for a backup unit of a natural gas pipeline compressor. Background technique [0002] At present, the design method of backup units for natural gas pipeline compressors is usually limited to the analysis of the impact of unit failure in a single compressor station on the availability of the entire compressor station or the study of unit backup schemes from the perspective of hydraulic systems and economics, without comprehensive consideration of line parts, wear and tear, etc. The influence of the spanning part and the failure of the valve chamber on the reliability of the pipeline system cannot reflect the reliability of the pipeline system as a whole. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a design method for the backup unit of the natural gas pipeline compressor, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/3323G06F2111/08G06F2113/14
Inventor 代小华张文伟余志峰董平省张振永罗叶新毛平平孔芋丁
Owner BC P INC CHINA NAT PETROLEUM CORP
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