CN-115422666-B - Natural gas compressor selection method and device

Abstract

The invention discloses a natural gas compressor type selection method which comprises the following steps of selecting basic data units of a compressor, setting natural gas components, setting surrounding environment data, setting operation parameters of the compressor, inputting the parameters into a matching function to obtain the type of the compressor, testing the type of the selected compressor, and generating a type selection report output according to the type of the selected compressor. The invention also provides a natural gas compressor type selecting device. According to the invention, after the basic data units, the gas and the environmental data are set, the compressors are matched, and the compressors are subjected to performance simulation under different conditions, so that the types of the compressors are basically selected, and meanwhile, the defects of lack of accuracy, error and the like of manual calculation data are overcome.

Inventors

• SONG WENGUANG
• WANG XINCHENG
• TU YU
• JIN TIAN
• ZHANG JIAHAO
• ZHANG QIUJUAN
• CHEN XIAO

Assignees

• 长江大学

Dates

Publication Date

20260508

Application Date

20220112

Claims (6)

1. 1. A natural gas compressor type selection method is characterized by comprising the following steps of selecting a basic data unit of a compressor, setting natural gas components, setting surrounding environment data, setting operation parameters of the compressor, inputting a matching function to obtain a compressor type, testing the selected compressor type, and generating a type selection report output according to the selected compressor type; The method comprises the steps of matching the maximum inlet pressure, the maximum outlet pressure, the maximum inlet temperature, the maximum outlet temperature and the maximum flow of the compressor according to the gas pressure, the gas temperature and the flow of compressed gas when entering the natural gas compressor, thereby obtaining the compressor in accordance with the formula Wherein In order for the compressor to be powered, As an inlet pressure/outlet pressure, a pressure difference is provided, For the current number of compression stages, For the total number of compression stages, For the flow rate of the compressed gas cylinder, Is a constant at different compression stages; The SVR model is used for mapping the original variable to a high-dimensional characteristic space to construct a linear classification function through nonlinear transformation so as to optimize the compressor; the test selects the compressor type, and specifically, the compressor type is determined and selected according to the maximum shaft speed, the volume ratio, the maximum shaft power, the maximum discharge temperature, the suction pressure and the discharge pressure of the compressor.
2. 2. The method for selecting the natural gas compressor according to claim 1, wherein the constants of the different compression stages are specifically 1 in the first-stage compression, 1.08 in the second-stage compression and 1.1 in the third-stage compression.
3. 3. A natural gas compressor profiling method according to claim 1, wherein the setting of the ambient data comprises ambient base temperature, atmospheric pressure, suction and discharge temperature.
4. 4. A natural gas compressor type selection device adopting the natural gas compressor type selection method according to any one of claims 1-3, and is characterized by comprising a compressor basic data setting module, a natural gas component module, a compressor surrounding environment setting module, a compressor configuration module, a compressor performance simulation module and a compressor type selection report module, wherein the compressor basic data setting module is used for storing compressor data information, the natural gas component module is used for setting natural gas components, the compressor surrounding environment setting module is used for setting environment conditions as the environment conditions for the operation of a compressor, the compressor configuration module is used for determining the performance of a compressor and selecting the compressor type, the compressor performance simulation module is used for testing the suction pressure, the discharge pressure and the power of the selected compressor type, and the compressor type selection report module is used for simulating the operation of the compressor according to the compressor performance simulation module and generating a type selection report.
5. 5. A natural gas compressor profiling apparatus as defined in claim 4, wherein the compressor is operated at ambient conditions including ambient base temperature, atmospheric pressure, suction and discharge temperature.
6. 6. A natural gas compressor type selection apparatus according to claim 4, wherein said selected compressor type is determined and selected based on compressor maximum shaft speed, volume ratio, maximum shaft power, maximum discharge temperature, suction pressure, discharge pressure.

Description

Natural gas compressor selection method and device Technical Field The invention relates to the technical field of natural gas compressor type selection, in particular to a natural gas compressor type selection method and device. Background The compressor type selection system fills the domestic gap of compressor type selection software, most of the existing deselect natural gas compressors mostly adopt manual calculation, so that the efficiency is low, errors are easy to generate, and even errors are caused. This is not allowed to occur in the field of industrial resources. Disclosure of Invention The invention provides a method and a device for selecting a natural gas compressor aiming at the defects in the prior art. The method can make a more accurate and rapid compressor feedback scheme in the new natural gas collection project to match with various local conditions. In order to solve the technical problems, the invention provides the following technical scheme: A method for selecting a natural gas compressor, comprising the steps of: Selecting a basic data unit of the compressor; Setting a natural gas component; setting surrounding environment data; setting the operation parameters of the compressor and inputting the operation parameters into a matching function to obtain the type of the compressor; Testing the selected compressor type; and generating a type selection report output according to the selected compressor type. The further technical scheme of the invention is that the set compressor operation parameters are input into a matching function to obtain the compressor type, and the method specifically comprises the following steps: matching the maximum inlet pressure, the maximum outlet pressure, the maximum inlet temperature, the maximum outlet temperature and the maximum flow of compressed gas which can be born by the compressor according to the gas pressure, the gas temperature, the gas pressure, the gas temperature and the flow of compressed gas when the compressed gas enters the natural gas compressor, thereby obtaining a consistent compressor, and obtaining a formula w=22× (ratio/stage) × (Stages) ×mmscfd×f; Where W is compressor power, ratio is inlet pressure/outlet pressure, stage is the current number of compression stages, stages is the total number of compression stages, MMSCFD is the compressed cylinder flow, and F is the constant at the different number of compression stages. The method comprises the steps of setting operation parameters of a compressor, inputting the operation parameters of the compressor into a matching function to obtain the type of the compressor, mapping an original variable to a high-dimensional feature space by using a SVR model through nonlinear transformation to construct a linear classification function, and optimizing the compressor. The further technical scheme of the invention is that the constants of the different compression stages are specifically 1 in the first-stage compression, 1.08 in the second-stage compression and 1.1 in the third-stage compression. The invention further adopts the technical scheme that the set ambient environment data comprises ambient environment basic temperature, atmospheric pressure and suction and discharge temperature. The invention further adopts the technical scheme that the type of the compressor is selected through the test, and particularly the type of the compressor is determined and selected according to the maximum shaft speed, the volume ratio, the maximum shaft power, the maximum discharge temperature, the maximum suction pressure and the discharge pressure of the compressor. The invention also provides a natural gas compressor type selecting device, which comprises: The basic data setting module of the compressor is used for storing the data information of the compressor; the natural gas composition module is used for setting natural gas composition; The compressor surrounding environment setting module is used for setting the environment condition as the environment condition of the operation of the compressor; a compressor configuration module for determining compressor specific performance and selecting a compressor type; the compressor performance simulation module is used for testing the suction pressure, the discharge pressure and the power of the selected compressor type; and the compressor type selection report module is used for simulating the operation of the compressor according to the compressor performance simulation module, determining the type selection of the compressor and generating a type selection report. As a further technical scheme, the environment conditions for the operation of the compressor comprise the basic temperature of the surrounding environment, the atmospheric pressure and the suction and discharge temperature. The invention further provides a method for selecting the compressor type, specifically, determining and selecting the compressor type according to the maximum shaft