CN110369388B

CN110369388B - Method for removing carbon deposition in compressor air passage

Info

Publication number: CN110369388B
Application number: CN201910688275.1A
Authority: CN
Inventors: 庞新勇; 杨威锋; 许跃俊
Original assignee: Enric Bengbu Compressor Co ltd
Current assignee: Enric Bengbu Compressor Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2022-06-03
Anticipated expiration: 2039-07-29
Also published as: CN110369388A

Abstract

The invention relates to a method for removing carbon deposition in an air passage of a compressor, which is characterized by comprising the following steps of: (1) the volume ratio of sodium hydroxide to water is 2-5: 100 preparing a solution; (2) putting the workpiece in a heating tank, immersing the workpiece into the heating tank until the workpiece is totally 20-50mm lower than the liquid level, and continuously heating for 1-2 hours after the workpiece is heated to boiling; (3) covering and preserving heat for 8-12 hours, taking out the workpiece, washing with clean water for 3-5 times, blowing water traces on the surface of the workpiece clean with compressed air, and coating gas-phase rust preventive oil on the processed surface for protection and rust prevention. The invention has the beneficial effects that: the operation is simple, convenient, economical and practical; not only reduces the cleaning operation intensity of workers, but also improves the cleaning operation efficiency; the removal rate of the carbon deposition reaches 100%, parts do not need to be replaced, and the parts can be repeatedly cleaned and applied; the method can also be used for cleaning carbon deposition in inner cavities of pipelines of internal combustion engines, automobiles and the like.

Description

Method for removing carbon deposition in compressor air passage

Technical Field

The invention belongs to the field of machine manufacturing, relates to the technical field of compressors, and particularly relates to a method for removing carbon deposition in an air passage of a compressor.

Background

In the beginning of design of a compressor product (an oil lubrication compressor), the time of oil particles passing through a hot area is considered for the structural design of the hot area of an exhaust system, the filling amount of lubricating oil is set according to the design requirement of the running oil loss of the compressor, and the oil particles can be ensured not to be oxidized in the hot area and not to generate a carbon deposit layer. However, when the lubricating oil is overdosed, the oil particles become larger particles having a larger mass and inertia, which cannot be carried away by the gas flow as they pass through the hot zone and are thus deposited on the walls of the hot zone, which has a sufficient time to come into contact with the air, so that oxidation reactions take place and decomposition takes place, and once the oil has been oxidized, the oil becomes more viscous, forms a sludge-like mass and finally converts into carbon deposits. If carbon deposition is generated in the air passage and the air passage is not cleaned in time, spontaneous combustion can occur, a pressure system is caused to catch fire, and explosion is caused.

The common process for eliminating carbon deposition comprises two methods: the method is feasible, but high in cost, and when the parts are not stored, the parts need to be reprocessed, so that the replacement period is longer; secondly, manually cleaning; each part is disassembled, and the interior of the part is cleaned manually, and the method has the characteristics of high cleaning difficulty, heavy work and incapability of thoroughly cleaning; when the structure of the inner cavity is complex, the cleaning tool cannot reach the inner cavity, the cleaning cannot be realized, and dead angles are formed.

The patent publication No. CN104190672A 'carbon deposition removal method for a gas preheating pipe' refers to a method which can remove carbon deposition in a preheater pipe more quickly and does not cause the risk of local burning out of the gas preheating pipe due to local overheating at a position with more carbon deposition, but the reaction temperature is higher and needs to be controlled at 500-1000 ℃, and gas is easy to leak; the patent publication No. CN202065067U "a method and a device for removing carbon deposition from an automobile engine" discloses a method for sending a pulse signal in due time according to the operating condition of the engine, so as to remove the original carbon deposition from the engine and prevent the generation of new carbon deposition, but the method needs a special device to send the pulse signal.

Disclosure of Invention

The invention aims to solve the defects of the prior art, provides a method for removing carbon deposition in an air passage of a compressor, adopts a chemical cleaning method to achieve the aim of completely cleaning the carbon deposition, and does not replace or damage parts.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a method for removing carbon deposition in an air passage of a compressor is characterized by comprising the following steps: (1) sodium hydroxide (NaOH) and water are used according to the volume ratio of 2-5: 100, preparing NaOH solution;

(2) putting workpieces (a pipeline, a cooler, a separator, a buffer tank, a cylinder and the like) in a heating tank, immersing the workpieces into the solution and keeping the workpieces 20-50mm below the liquid level, heating to boil, and then continuing to heat for 1-2 hours;

(3) and covering the heating tank, continuously preserving the heat for 8-12 hours to soak the workpiece in the boiling liquid, taking out the workpiece, washing the workpiece for 3-5 times by using clean water to completely wash out the carbon deposit, blowing water traces on the surface of the workpiece by using compressed air, and coating gas-phase rust preventive oil on the processed surface for protection and rust prevention.

The invention has the beneficial effects that: compared with the traditional process, the method is simple, convenient, economical and practical to operate, not only reduces the cleaning operation intensity of workers, but also improves the cleaning operation efficiency; the removal rate of the carbon deposition reaches 100%, and parts do not need to be replaced and can be repeatedly applied; the method can also be used for cleaning carbon deposition in inner cavities of pipelines of internal combustion engines, automobiles and the like.

Drawings

FIG. 1 is a picture of a compressor cylinder part before carbon deposition cleaning;

FIG. 2 is a picture of a compressor cylinder part after carbon deposition cleaning;

FIG. 3 is a picture of a compressor piston part before carbon deposition cleaning;

FIG. 4 is a picture of the compressor piston assembly after carbon deposits have been cleaned.

As can be seen from FIGS. 1 and 3, the carbon deposits in the cylinder diameter of the front cylinder and on the piston part are fully distributed, and the parts cannot be normally used; the part cleaned by the method is exposed to the natural color of metal (figures 2 and 4), and the part can be normally used.

Detailed Description

Example 1: cleaning and clearing the carbon deposit of D121 products (parts such as pipelines, coolers, separators, buffer tanks, cylinders, pistons and the like) of the company:

a method for removing carbon deposition in an air passage of a compressor comprises the following specific implementation steps:

(1) adding 3kg of sodium hydroxide (NaOH) into 100L of water, and uniformly stirring to prepare NaOH solution;

(2) placing the cylinder in a heating tank (a steel iron tank with the length of 2500mm, the width of 750mm and the height of 700 mm) to ensure that the cylinder is completely immersed in the solution and is 30mm lower than the liquid level, and heating for 1 hour after boiling;

(3) and covering the heating groove, continuously preserving the heat for 8 hours to soak the cylinder in the boiling liquid, taking out the cylinder, washing the cylinder for 3 times by using clean water to completely wash out the carbon deposit, blowing water traces on the surface of the cylinder by using compressed air, and coating gas-phase anti-rust oil (JB/T4050.1-1999) on the processed surface for protection and rust prevention.

The above embodiments are merely illustrative of the present invention, and not restrictive, and many modifications and changes may be made by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A method for removing carbon deposition in an air passage of a compressor is characterized by comprising the following steps: (1) sodium hydroxide and water are used according to the volume ratio of 2-5: 100 preparing NaOH solution;

(2) putting the workpiece into a heating tank, wherein the workpiece is totally immersed into the solution and is 20-50mm lower than the liquid level, and continuously heating for 1-2 hours after the workpiece is heated to boiling, and the workpiece comprises a pipeline, a cooler, a separator, a buffer tank and a cylinder;