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Reciprocating type compressor reversal angle detection system based on indicator diagram

A detection system and compressor technology, applied in the direction of liquid variable capacity machinery, pump testing, mechanical equipment, etc., can solve the problems of cylinder strength risk, difficult operation, and restrictions on the wide application of the dynamometer method, so as to improve the service life, Simple operation and high accuracy effect

Active Publication Date: 2019-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty in actual operation of this method of measuring dynamic pressure, the opening of the cylinder wall also brings a greater risk to the strength of the cylinder, thus restricting the wide application of the dynamometer method in the field of fault diagnosis of reciprocating compressors

Method used

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  • Reciprocating type compressor reversal angle detection system based on indicator diagram
  • Reciprocating type compressor reversal angle detection system based on indicator diagram
  • Reciprocating type compressor reversal angle detection system based on indicator diagram

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 A reverse angle detection system for a reciprocating compressor based on an indicator diagram is shown, including a main control unit 1, a storage unit 2 and a display unit 3;

[0039] The input end of the main control unit 1 is provided with a pressure acquisition unit 5 and an input unit 4, the storage unit 2 is connected with a data calculation unit 6, and the data calculation unit 6 is also connected with the main control unit 1 and the display unit 3;

[0040] The pressure acquisition unit 5 is specifically a plurality of pressure sensors, and a plurality of the pressure sensors are arranged inside the reciprocating compressor, including a connecting rod pressure sensor and a crosshead pin pressure sensor, for detecting the comprehensive piston force Fp of the compressor, The data calculation unit 6 is used to calculate the data acquired by the pressure acquisition unit 5, draw the calculated data as a dynamometer diagram and input the dynamometer ...

Embodiment 2

[0046] On the basis of the embodiment, after drawing the dynamometer diagram, the data calculation unit 6 can further process the dynamometer diagram, which specifically includes the following steps:

[0047] Step 1, first put the root node into the coordinate system of the dynamometer diagram;

[0048]Step 2, take out the first node from the coordinate system of the dynamometer diagram, and check whether it is the target, if the target is found, end the search and return the result;

[0049] Step 3, if no target is found, add all its untested dynamometer values ​​into the coordinate system of the dynamometer;

[0050] Step 4, if the queue is empty, that is, there is no object to be searched in the picture, end the search.

Embodiment 3

[0052] A detection method for a reverse angle detection system of a reciprocating compressor based on a dynamometer diagram, specifically comprising the following steps:

[0053] Step 1: Start the reciprocating compressor to work. When the compressor crankshaft is at any rotation angle, the pressure acquisition unit 5 works, and the values ​​detected by the connecting rod pressure sensor and the crosshead pin pressure sensor in the compressor are accumulated and superimposed to obtain the compressor comprehensive value. Piston force Fp;

[0054] Step 2: The comprehensive piston force Fp of the compressor will first act on the crosshead pin and transmit it along the connecting rod, and the connecting rod is in an active state. The main control unit 1 sets the movable angle between the connecting rod and the cylinder axis as α, and Input the value acquired by the pressure acquisition unit 5 into the data calculation unit 6, and the data calculation unit 6 calculates the force Fc...

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Abstract

The invention discloses a reciprocating type compressor reversal angle detection system based on an indicator diagram, and particularly relates to the technical field of compressor detection. The system involves a main control unit, a storage unit and a display unit; the input end of the main control unit is provided with a pressure acquisition unit and an input unit; the storage unit is connectedwith a data calculation unit, and the data calculation unit is further connected with the main control unit and the display unit; the pressure acquisition unit is arranged to be a plurality of pressure sensors, the plurality of pressure sensors are arranged at the interior of a reciprocating type compressor and comprise connecting rod pressure sensors and crosshead pin pressure sensors, and the pressure acquisition unit is used for detecting the comprehensive piston force Fp of the compressor; and the data calculation unit is used for calculating the data acquired by the pressure acquisitionunit. Compared with the traditional mode that the dynamic pressure in a cylinder is obtained by performing holes in the cylinder wall, the system has the advantages that the operation is simple, the data accuracy is high, and popularization of the application of the indicator diagram method in the field of reciprocating type compressor fault diagnosis is facilitated.

Description

technical field [0001] The invention relates to the technical field of compressor detection, and more specifically, the invention relates to a reverse angle detection system of a reciprocating compressor based on an indicator diagram. Background technique [0002] Reciprocating piston compressors have the widest coverage of performance parameters, including volume flow, suction and discharge pressure, and shaft power. Therefore, it is widely used in the oil and gas industry for gas gathering and transportation, oil and gas processing, gas injection and storage, gas lift drainage gas recovery, gas lift oil recovery, gas injection and crude oil stabilization, etc. [0003] During the use of reciprocating compressors, it is found that the bushing of the small end of the connecting rod sometimes has the problem of burning. According to the analysis, this is directly related to the poor lubrication of the small end bushing of the connecting rod. There are many reasons for the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00F04B39/00
CPCF04B39/00F04B51/00
Inventor 彭灼华秦杰户佐金王有富卢荣富
Owner CHINA PETROLEUM & CHEM CORP
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