CN111715635A - Compressor oil circulation method - Google Patents

Compressor oil circulation method Download PDF

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Publication number
CN111715635A
CN111715635A CN202010539773.2A CN202010539773A CN111715635A CN 111715635 A CN111715635 A CN 111715635A CN 202010539773 A CN202010539773 A CN 202010539773A CN 111715635 A CN111715635 A CN 111715635A
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CN
China
Prior art keywords
oil
compressor
tank
filter
circulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010539773.2A
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Chinese (zh)
Inventor
王彦生
刘体义
娄战士
臧昌昊
郜文举
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China Eleventh Chemical Construction Co Ltd
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China Eleventh Chemical Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Eleventh Chemical Construction Co Ltd filed Critical China Eleventh Chemical Construction Co Ltd
Priority to CN202010539773.2A priority Critical patent/CN111715635A/en
Publication of CN111715635A publication Critical patent/CN111715635A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00—Details of machines or methods for cleaning hollow articles
    • B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
    • B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00—Details of machines or methods for cleaning hollow articles
    • B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
    • B08B2209/04—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The application provides a compressor oil circulation method, and relates to the technical field of oil system cleaning. The compressor oil circulation method comprises the following steps: and cleaning and installing, wherein the cleaning and installing step comprises the steps of cleaning an oil station oil tank, a compressor, an oil pump and an oil pipe, and then connecting the oil station oil tank, the compressor and the oil pump together in series end to end through the oil pipe to form a compressor unit oil system. And the oil circulation step comprises the steps of alternately performing oil circulation of an oil system of the compressor unit by adopting hot oil and cold oil, and filling inert gas or nitrogen into an oil pipe for flushing. The compressor oil circulation method adopts hot oil and cold oil to alternately perform oil circulation, so as to achieve the effects of pipeline expansion and stripping deposits in the pipeline. Inert gas or nitrogen is filled into the oil pipe, so that circulating oil generates bubbles, the whole oil pipeline vibrates, impurities at dead corners and welding seams in the oil pipeline are efficiently circulated, and the qualified progress of oil circulation is improved.

Description

Compressor oil circulation method
Technical Field
The application relates to the technical field of oil system cleaning, in particular to a compressor oil circulation method.
Background
In the industries of petroleum, chemical industry and the like, the centrifugal compressor plays an important role and is also heart equipment in production devices of various industries. The qualified speed and quality of the oil circulation of the centrifugal compressor directly influence the time arrangement of test run and the service life of the compressor. The oil circulation in the related art is performed less efficiently.
Disclosure of Invention
An object of the embodiments of the present application is to provide a compressor oil circulation method, which aims to solve the problem of low completion efficiency of oil circulation in the related art.
The embodiment of the application provides a compressor oil circulating method, which comprises the following steps: cleaning and installing, wherein the cleaning and installing step comprises cleaning an oil station oil tank, a compressor, an oil pump and an oil pipe, and then connecting the oil station oil tank, the compressor and the oil pump together in series end to end through the oil pipe to form a compressor oil assembly system; and the oil circulation step comprises the steps of alternately performing oil circulation of an oil system of the compressor unit by adopting hot oil and cold oil, and filling inert gas or nitrogen into an oil pipe for flushing.
According to the compressor oil circulation method, before oil circulation is carried out, all parts of an oil system of a compressor unit need to be cleaned. For example, the oil station oil tank, the compressor, the oil pump and the oil pipe need to be cleaned, and after the oil station oil tank, the compressor, the oil pump and the oil pipe are confirmed to be clean, the structures are installed together to form the compressor unit oil system. And then oil circulation is carried out on an oil system of the compressor unit, and during circulation, hot oil and cold oil are alternately adopted for oil circulation, so that the pipeline is stretched and stripped of deposits in the pipeline, and the cleaning effect is improved. During circulation, inert gas or nitrogen can be filled into the oil pipe for flushing, so that circulating oil generates bubbles, the whole oil pipeline generates vibration, impurities at dead corners and welding seams in the oil pipeline are efficiently circulated, and the qualified progress of oil circulation is improved. And finally, checking and accepting the compressor unit oil system. By adopting the compressor oil circulation method, oil circulation can be completed more efficiently.
As an optional technical scheme of the embodiment of the application, the compressor unit oil system comprises an oil heater and an oil cooler, wherein the oil heater is used for increasing the oil temperature of oil circulation, and the oil cooler is used for reducing the oil temperature of the oil circulation. The oil heater and the oil cooler are respectively used for heating and reducing the oil temperature of oil circulation, so that hot oil and cold oil alternately perform oil circulation.
As an optional technical scheme of this application embodiment, oil heater sets up in the oil station oil tank, and the oil inlet of oil cooler and the export of oil pump communicate, and the oil-out of oil cooler and the oil inlet of compressor communicate, still have parallelly connected first valve in the position of oil cooler, and the one end of first valve and the export of oil pump communicate, and the other end of first valve and the oil inlet of compressor communicate. And connecting the oil heater with the oil station oil tank to directly heat the circulating oil in the oil station oil tank. And connect first valve in parallel in the position of oil cooler for oil heater during operation opens first valve, and circulating oil does not pass through the oil cooler. And when the oil cooler is working, the first valve is closed, so that the circulating oil passes through the oil cooler, and the oil temperature of the circulating oil is reduced.
As an optional technical scheme of the embodiment of the application, the compressor unit oil system comprises a first oil filter and a second oil filter which are connected in parallel, an oil outlet of the oil cooler is communicated with an oil inlet of the compressor through the first oil filter or the second oil filter, and the other end of the first valve is communicated with an oil inlet of the compressor through the first oil filter or the second oil filter. Two oil filters are arranged, and when one oil filter is used, the other oil filter is cleaned for later use. Thus, when the filter element of the first oil filter is clogged seriously, the oil circulation can be switched to the second oil filter without causing the oil circulation to be suspended.
As an optional technical scheme of the embodiment of the application, the compressor unit oil system comprises an oil filter, an inlet of the oil filter is connected to a sewage discharge port of the oil station oil tank, and an outlet of the oil filter is connected to an oil filling port of the oil station oil tank and used for filtering oil flowing back from an oil outlet of the compressor. Through the arrangement of the oil filter, sundries in oil flowing back from the oil outlet of the compressor can be filtered, so that the oil in the oil tank is kept clean all the time.
As an optional technical scheme of the embodiment of the application, the inert gas or nitrogen is filled between the oil station oil tank and the oil pump. And nitrogen is filled between the oil station oil tank and the oil pump, so that the oil station is convenient to use.
As an optional technical solution of the embodiment of the present application, when the inert gas or the nitrogen gas is filled, the pressure of the inert gas or the nitrogen gas is higher than the oil pressure in the oil system of the compressor unit. The pressure of the filled inert gas or nitrogen is higher than the oil pressure of an oil system of the compressor unit, so that the circulating oil can generate bubbles, and the whole oil pipeline can vibrate.
As an optional technical scheme of the embodiment of the application, when the inert gas or the nitrogen is filled, the inert gas or the nitrogen is filled once every 1-2 hours, and each filling time is 10-20 minutes. And inert gas or nitrogen is filled at certain time intervals, so that the filled nitrogen is favorably and fully utilized.
As an optional technical scheme of the embodiment of the application, in the step of cleaning and installing, the method comprises the steps of cleaning the oil pipe in sections, and dipping the cleaning agent by cloth and dragging the cleaning agent back and forth in the pipe until the cloth is clean. The cloth is used for dipping the cleaning agent and dragging back and forth in the oil pipe, so that the stains in the oil pipe are cleaned, and the subsequent oil circulation is facilitated.
As an optional technical scheme of the embodiment of the application, in the cleaning and installing step, the oil station oil tank is cleaned, the oil station oil tank is firstly adhered by flour dough, and then the filtered flushing oil is filled. The oil station oil tank is the starting point of the whole oil circulation, and if the oil station oil tank is not clean, impurities can be brought into other parts, so that the oil station oil tank is firstly stuck clean by flour dough, and then the filtered flushing oil is filled, and the oil station oil tank is ensured to be cleaned in place.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a flow chart of a compressor oil circulation method provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a compressor unit oil system provided in an embodiment of the present application.
Icon: 100-oil station oil tank; 200-a compressor; 300-an oil pump; 400-oil pipe; 500-an oil heater; 610-a first oil filter; 620-a second oil filter; 630-an oil filter; 710-an oil cooler; 720-a first valve; 810-high level oil tank; 820-high tank valve group.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
Referring to fig. 1 and fig. 2, the present embodiment provides a compressor oil circulation method, including: step S1, cleaning and installing compressor oil system equipment; the compressor unit oil system comprises an oil station oil tank 100, a compressor 200 and an oil pump 300, wherein the oil station oil tank 100, the compressor 200 and the oil pump 300 are connected in series end to end through an oil pipe 400; cleaning and installing the oil station oil tank 100, the compressor 200, the oil pump 300 and the oil pipe 400 together; step S2, oil circulation of the compressor oil system; hot oil and cold oil are alternately used for oil circulation; filling inert gas or nitrogen into the oil pipe 400 for flushing; and thirdly, checking and accepting the oil system of the compressor unit.
According to the compressor oil circulation method, before oil circulation is carried out, all parts of an oil system of a compressor unit need to be cleaned. For example, the oil station tank 100, the compressor 200, the oil pump 300, and the oil pipe 400 need to be cleaned, and after the cleaning is confirmed, the above-described structures are mounted together to form a compressor unit oil system. And then oil circulation is carried out on an oil system of the compressor unit, and during circulation, hot oil and cold oil are alternately adopted for oil circulation, so that the pipeline is stretched and stripped of deposits in the pipeline, and the cleaning effect is improved. During circulation, inert gas or nitrogen can be filled into the oil pipe 400 for flushing, so that circulating oil generates bubbles, the whole oil pipe 400 vibrates, impurities at dead corners and welding seams in the oil pipe 400 are efficiently circulated, and the qualified progress of oil circulation is improved. And finally, checking and accepting the compressor unit oil system. By adopting the compressor oil circulation method, oil circulation can be completed more efficiently.
In a first step S1, the compressor oil system is cleaned and installed, and the oil station oil tank 100, the compressor 200, the oil pump 300, and the oil pipe 400 are cleaned and installed together. In the present embodiment, the compressor 200 includes a scope, a valve, a pipe, and a three-way valve. The scope, valves, tubing and three-way valves must be carefully cleaned prior to installation. The weld joint of the pipeline is not welded thoroughly and is repaired and welded; the weld beading should be removed. The welding seam of the inner opening of the flange is smooth and full so as to avoid sundries from being left on the dead angle. When the pipeline of the compressor 200 is installed, the inner ring of the gasket is checked to avoid slag falling; burrs cannot exist at the screw thread connection part; the flange bolts are symmetrically and uniformly screwed; the support hanger of the oil pipe 400 should be installed reasonably.
When the oil tank is cleaned, the flour dough is applied to each corner to be adhered, after the oil tank is cleaned, the flushing oil is required to be filled immediately, and the flushing oil is required to be filled by the oil filter 630, so that sundries are prevented from being brought into the oil tank. All the oil pipes 400 are divided into equal sections for manual cleaning before installation, and are dragged back and forth in the pipes for a plurality of times by cotton cloth dipped with trichloroethylene or other cleaning agents, and then dragged by white cloth dipped with trichloroethylene or other cleaning agents until the white cloth is clean. The cleanliness of all pipelines, valve banks and valve pipe fittings can be installed after the pipeline, the valve bank and the valve pipe fittings are inspected to be qualified. When the oil pipe 400 is welded, argon arc welding is used to avoid welding slag in the pipeline and thorough welding of the root, so as to avoid dirt retention.
Referring to fig. 2, in the present embodiment, the compressor oil system includes an oil heater 500 and an oil cooler 710, the oil heater 500 is used for increasing the oil temperature of the oil circulation, and the oil cooler 710 is used for decreasing the oil temperature of the oil circulation. The oil heater 500 and the oil cooler 710 are respectively used for heating and reducing the oil temperature of the oil circulation, so that hot oil and cold oil are alternately circulated. The oil heater 500 is connected to the oil station tank 100, the oil cooler 710 is connected between the oil pump 300 and the compressor 200, and a first valve 720 is connected in parallel to the oil cooler 710. The oil heater 500 is connected to the oil station tank 100 to directly heat the circulating oil in the oil station tank 100. And the first valve 720 is connected in parallel at the position of the oil cooler 710, so that when the oil heater 500 operates, the first valve 720 is opened, and the circulating oil does not pass through the oil cooler 710. When the oil cooler 710 operates, the first valve 720 is closed, so that the circulating oil passes through the oil cooler 710, and the temperature of the circulating oil is lowered.
In the first step S1, the oil cooler 710 is cleaned and then installed. When the oil cooler 710 is cleaned, core pulling inspection is performed, and if the inner wall of the shell or the tube array is rusted and fouled (made of carbon steel), chemical cleaning is performed. If only a little sundries and dirt (stainless steel materials) are left, steam or compressed air is used for blowing clean. The oil cooler 710 is cleaned to be qualified, and pressure testing is performed after the oil cooler is reassembled. During pressure testing, the oil cavity is preferably tested by oil, and the water cavity is tested by water. If the oil cavity is unconditionally tested by using oil, the oil cavity can be tested by using water, but after the pressure test is qualified, the oil cavity is dried by using steam or dry air and immediately replaced by using flushing oil. Alternatively, pressure testing may be performed with dry compressed air or nitrogen.
Referring to fig. 2, in the present embodiment, the compressor oil system includes a first oil filter 610 and a second oil filter 620. The first oil filter 610 and the second oil filter 620 are connected in parallel and then connected to the compressor 200. The oil cooler 710 is connected to both the first oil filter 610 and the second oil filter 620, and the first valve 720 is connected to both the first oil filter 610 and the second oil filter 620. Two oil filters are arranged, and when one oil filter is used, the other oil filter is cleaned for later use. Thus, when the clogging of the filter element of the first oil filter 610 is serious, it is possible to switch to the second oil filter 620 for oil circulation without causing the oil circulation to be suspended.
Similarly, in the first step S1, the first oil filter 610 and the second oil filter 620 need to be cleaned before installation. The first oil filter 610 and the second oil filter 620 are cleaned, the filter element is firstly detached (carefully stored), the interior of the filter element is cleaned by trichloroethylene or gasoline, the filter element is adhered to be clean by flour dough, the filter element is installed again after cleaning is finished, the cleaning oil is filled, and the end cover is covered.
In this embodiment, pressure difference transmitters are respectively disposed on inlet and outlet pipes of the first oil filter 610 and the second oil filter 620, and are used for displaying the pressure difference between the respective inlet and outlet pipes of the first oil filter 610 and the second oil filter 620. When the pressure difference reaches 0.15MPa, the filter element of the corresponding oil filter is seriously blocked, and the filter element of the oil filter must be switched and cleaned immediately.
Referring to fig. 2, in the present embodiment, the compressor oil system includes a high-level oil tank 810 and a high-level oil tank valve group 820. The high-level oil tank 810 is communicated with the oil station oil tank 100, and the high-level oil tank 810 is communicated with the compressor 200 through a high-level oil tank valve group 820. When an emergency occurs in the high-level oil tank 810, for example, the oil pump 300 is suddenly powered off, and oil in the high-level oil tank 810 flows out under the action of gravity to supply oil to and lubricate the bearings of the compressor 200. When the compressor oil system is operating normally, the high-level oil tank 810 is not in use.
In the first step S1, the high-level tank 810 and the high-level tank valve group 820 need to be cleaned and installed after the cleaning is completed. The steps of the flushing operation of the high-level fuel tank 810 and the high-level fuel tank valve group 820 include: the high-level oil tank 810 (made of stainless steel) is cleaned with cleaning agent such as trichloroethylene or gasoline, and then is cleaned with dough. Then the oil pump 300 is started, the flow regulator before the bearing is closed to increase the system pressure, then the stop valve in the high-level oil tank valve group 820 is opened to fill oil into the high-level oil tank 810 until oil flows back to the oil tank from the oil return view mirror of the high-level oil tank 810. The high tank 810 is now full and the shut-off valve in the high tank valve block 820 is closed. The oil pump 300 is stopped, and at this time, the oil pressure of the lubricating oil main pipe is lower than the head pressure of the high-level oil tank 810, the check valve in the high-level oil tank valve group 820 is automatically opened, and the oil in the high-level oil tank 810 flows down rapidly. This operation is repeated until clean.
In this embodiment, referring to fig. 2, the oil system of the compressor assembly includes an oil filter 630, an inlet of the oil filter 630 is connected to the drain at the lowest point of the oil station tank 100, and an outlet of the oil filter 630 is connected to the oil filling port or the oil gas discharge port of the oil station tank 100. By providing the oil filter 630, the impurities in the oil flowing back from the oil outlet of the compressor 200 to the oil station tank 100 can be filtered, so that the oil in the oil station tank 100 can be kept clean all the time.
In a first step S1, the oil filter 630 may be installed after it has to be cleaned. When the oil filter 630 is cleaned, the filter element is first detached (carefully stored), the interior of the filter element is cleaned with trichloroethylene or gasoline, the filter element is then cleaned with flour dough, and after the filter element is cleaned, the filter element is reinstalled, the cleaning oil is filled, and the end cover is covered.
In this embodiment, the compressor oil system further comprises an oil accumulator. The oil pressure accumulator is installed on the upper oil pipe side beside the compressor 200, and the lubricating oil pressure is ensured to be stable in the period from the switching of the main oil pump 300 to the backup oil pump 300, and the vehicle jumping pressure cannot be reached. In a first step S1, the oil pressure accumulator needs to be cleaned and installed after completion. Because the oil pressure accumulator is a stainless steel or stainless steel lined container, only compressed air is needed to blow clean during cleaning.
In the present embodiment, referring to fig. 2, the compressor oil system includes an oil station oil tank 100, an oil pump 300, an oil cooler 710, an oil filter, and a compressor 200. The inlet of the oil pump 300 is communicated with the oil outlet of the oil station oil tank 100, the outlet of the oil pump 300 is communicated with the inlet of the oil cooler 710, the outlet of the oil cooler 710 is communicated with the inlet of the oil filter, the outlet of the oil filter is communicated with the inlet of the compressor 200, and the outlet of the compressor 200 is communicated with the oil inlet of the oil station oil tank 100.
The compressor oil system further includes a first valve 720, the first valve 720 is connected in parallel with the oil cooler 710, one end of the first valve 720 is communicated with an outlet of the oil pump 300, and the other end of the first valve 720 is communicated with an inlet of the oil filter. In the present embodiment, the oil filter includes a first oil filter 610 and a second oil filter 620 disposed in parallel, one of which is standby. In the present embodiment, the oil pump 300 includes two arranged in parallel. The two oil pumps 300 are operated simultaneously, increasing the flow rate and velocity of the oil. The compressor unit oil system further comprises an oil heater 500, wherein the oil heater 500 is arranged in the oil station oil tank 100 and used for heating oil in the oil station oil tank 100. The compressor oil system further comprises an oil filter 630, one end of the oil filter 630 is communicated with the oil filling port of the oil station oil tank 100, and the other end of the oil filter 630 is communicated with the sewage draining port of the oil station oil tank 100, and is used for filtering out impurities in the oil flowing back to the oil station oil tank 100 from the oil outlet of the compressor 200. The compressor unit oil system further comprises a high-level oil tank 810 and a high-level oil tank valve group 820, an oil outlet of the high-level oil tank 810 is communicated with an oil inlet of the oil station oil tank 100, and an oil return port of the high-level oil tank 810 is communicated with an inlet of the compressor 200 through the high-level oil tank valve group 820.
In a second step S2, after the circulating oil of the compressor unit is transported to the site, the qualification certificate is checked, appearance inspection is carried out barrel by barrel, after the oil is qualified by conventional analysis according to 10-15% of the number of barrels, flushing oil is injected into the oil tank by a filter press, and the oil level reaches the highest oil level. When the compressor 200 performs oil circulation flushing, the following preparation work should be performed: 1. the inlet and outlet oil pipes 400 connecting the bearings, servo motors, seals at each stage, etc. are removed and connected by temporary pipes (oil-resistant rubber pipes or pressure-resistant plastic pipes). 2. Disassembling a temporary oil return pipe at a speed regulation oil main pipe of the turbine and enabling the temporary oil return pipe to enter a front bearing box; a temporary pipe-in bearing box is directly prepared at the opening of the power oil pipe; a temporary tube should be provided for the seal oil pipe so that it does not enter the oil return pipe 400 through the seal. Flushing oil is generally not allowed to enter the bearing and a temporary pipe should be provided directly into the return pipe 400 or the bearing housing. All of the temporary flush tubing 400 must be disposed of clean before it can be used.
In a second step S2, the oil in the system is heated and cooled by the oil heater 500 and the oil cooler 710, so as to achieve the purpose of shrinking the pipes and peeling deposits in the pipes. And (3) flushing sundries possibly existing in the oil system by adopting a method of alternately flushing hot oil (40-75 ℃) and cold oil (10-30 ℃) in an oil circulation mode. In the process of oil flushing, the wood hammer is used for knocking each welding line, elbow and tee joint along the pipeline according to the flow direction of oil, and the dirt at the dead angle and the lowest part of the oil way is periodically discharged or cleaned.
In the second step S2, dry inert gas or dry nitrogen is filled into the oil pipe 400 for flushing, so that the circulating oil can generate bubbles, the whole oil pipe 400 vibrates, impurities at dead corners and welding seams in the oil pipe 400 are efficiently circulated, and the qualified progress of oil circulation is improved. In the present embodiment, the inert gas or nitrogen is filled between the station oil tank 100 and the oil pump 300. It is convenient to fill nitrogen between the oil station oil tank 100 and the oil pump 300. When the inert gas or the nitrogen is filled, the pressure of the inert gas or the nitrogen is higher than the oil pressure in the oil system of the compressor set. The pressure of the inert gas or nitrogen gas is higher than the oil pressure of the oil system of the compressor unit, so that the circulating oil can generate bubbles, and the whole oil pipe 400 can vibrate. And when the inert gas or the nitrogen is filled, the inert gas or the nitrogen is filled once every 1-2 hours, and the inert gas or the nitrogen is filled for 10-20 minutes every time. And inert gas or nitrogen is filled at certain time intervals, so that the filled nitrogen is favorably and fully utilized.
In the third step, the oil system is self-checked before being washed and accepted: and adding a 180-200-mesh stainless steel wire filter screen at the position of a horizontal flange perpendicular to the pipeline degree of an oil return port of each bearing box of the compressor, continuously flushing for 4 hours to check the filter screen, and reporting to check and acceptance after the filter screen is confirmed to meet the acceptance standard.
Oil washing acceptance standard: after the washing oil is continuously used for washing for 4 hours, no more than two points of soft impurities can be seen on a screen of 180-200 meshes per square centimeter, and a small amount of fibrous impurities are allowed to exist but hard mechanical impurities are not allowed to exist.
After the oil washing is qualified, all temporary pipelines are dismantled, and the small control oil and power oil pipes (generally stainless steel pipes) which are not washed are flushed with cleaning agents such as trichloroethylene or gasoline and blown clean by compressed air.
In the third step, the compressor unit oil system is subjected to commissioning. The oil pump 300 is started, the oil flushing is performed again, and the following checks and tests should be performed:
1) checking each oil supply point, adjusting a flow regulator before entering the bearing, adjusting the oil inlet pressure to 0.25MPa, and checking the oil return condition of an oil return pipe.
2) And checking the working condition of the filter, wherein after 24-hour operation, the increment of the differential pressure before and after the filter is not more than 0.01-0.015 MPa. And alarming when the pressure difference is more than 0.15 MPa.
3) And adjusting a control instrument and a safety instrument of the oil way until the action is accurate and reliable.
And after the above items are inspected to be qualified, the trial operation party of the oil system is qualified.
Referring to fig. 1 and fig. 2, the present embodiment provides a compressor oil circulation method, including: step S1, cleaning and installing compressor oil system equipment; the compressor unit oil system comprises an oil station oil tank 100, a compressor 200 and an oil pump 300, wherein the oil station oil tank 100, the compressor 200 and the oil pump 300 are connected in series end to end through an oil pipe 400; cleaning and installing the oil station oil tank 100, the compressor 200, the oil pump 300 and the oil pipe 400 together; step S2, oil circulation of the compressor oil system; hot oil and cold oil are alternately used for oil circulation; filling inert gas or nitrogen into the oil pipe 400 for flushing; and thirdly, checking and accepting the oil system of the compressor unit. According to the compressor oil circulation method, before oil circulation is carried out, all parts of an oil system of a compressor unit need to be cleaned. For example, the oil station tank 100, the compressor 200, the oil pump 300, and the oil pipe 400 need to be cleaned, and after the cleaning is confirmed, the above-described structures are mounted together to form a compressor unit oil system. And then oil circulation is carried out on an oil system of the compressor unit, and during circulation, hot oil and cold oil are alternately adopted for oil circulation, so that the pipeline is stretched and stripped of deposits in the pipeline, and the cleaning effect is improved. During circulation, inert gas or nitrogen can be filled into the oil pipe 400 for flushing, so that circulating oil generates bubbles, the whole oil pipe 400 vibrates, impurities at dead corners and welding seams in the oil pipe 400 are efficiently circulated, and the qualified progress of oil circulation is improved. And finally, checking and accepting the compressor unit oil system. By adopting the compressor oil circulation method, oil circulation can be completed more efficiently.
The strict control of the cleanliness of the compressor unit oil system and the strict control of the cleanliness of the compressor 200, the oil station oil tank 100, the oil pump 300, the oil pipe 400 and the like before oil circulation can greatly shorten the construction period of oil circulation.
During oil circulation, the oil filter 630 is used for small circulation of the oil station oil tank 100, so that impurities returning to the oil tank from the oil return pipe can be filtered, and the impurities are prevented from returning to the oil system. When oil is circulated, dry nitrogen (or other dry inert gases) is filled in, so that the circulating oil can generate bubbles, the whole oil pipe 400 vibrates, impurities at dead corners and welding seams in the oil pipe 400 are efficiently circulated, and the qualified progress of oil circulation is improved. When the oil circulates, the oil in the system is heated and cooled by the oil heater 500 and the oil cooler 710, so that the purposes of stretching the pipeline and stripping deposits in the pipeline are achieved. And (3) flushing sundries possibly existing in the oil system by adopting a method of alternately flushing hot oil (40-75 ℃) and cold oil (10-30 ℃) in an oil circulation mode. The construction method can shorten the working period of the oil circulation working procedure of the centrifugal compressor 200 group by thirty days or even longer, ensures the test run time and the service life of the compressor 200, and has remarkable economic benefit and social benefit.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A compressor oil circulating method, characterized by comprising:
cleaning and installing, wherein the cleaning and installing step comprises cleaning an oil station oil tank, a compressor, an oil pump and an oil pipe, and then connecting the oil station oil tank, the compressor and the oil pump together in series end to end through the oil pipe to form a compressor unit oil system;
and the oil circulation step comprises the steps of alternately performing oil circulation of the oil system of the compressor unit by adopting hot oil and cold oil, and filling inert gas or nitrogen into the oil pipe for flushing.
2. The compressor oil circulating method according to claim 1, wherein the compressor oil system includes an oil heater for raising an oil temperature of the oil circulation and an oil cooler for lowering the oil temperature of the oil circulation.
3. The method of claim 2, wherein the oil heater is disposed in the oil tank of the oil station, the oil inlet of the oil cooler is communicated with the outlet of the oil pump, the oil outlet of the oil cooler is communicated with the oil inlet of the compressor, a first valve is connected in parallel to the oil cooler, one end of the first valve is communicated with the outlet of the oil pump, and the other end of the first valve is communicated with the oil inlet of the compressor.
4. The compressor oil circulation method according to claim 3, wherein the compressor unit oil system includes a first oil filter and a second oil filter, the first oil filter and the second oil filter are connected in parallel, an oil outlet of the oil cooler is communicated with an oil inlet of the compressor through the first oil filter or the second oil filter, and the other end of the first valve is communicated with the oil inlet of the compressor through the first oil filter or the second oil filter.
5. The method for circulating the compressor oil according to claim 1, wherein the compressor oil system comprises an oil filter, an inlet of the oil filter is connected to a sewage outlet of the oil station oil tank, and an outlet of the oil filter is connected to an oil filling port of the oil station oil tank for filtering oil flowing back from an oil outlet of the compressor.
6. The compressor oil circulating method according to claim 1, wherein a location where an inert gas or nitrogen is filled is between the oil station tank and the oil pump.
7. The compressor oil circulation method according to claim 1, wherein the pressure of the inert gas or the nitrogen gas is higher than the oil pressure in the compressor oil system when the inert gas or the nitrogen gas is charged.
8. The method for circulating compressor oil according to claim 1, wherein the inert gas or nitrogen is introduced every 1 to 2 hours for 10 to 20 minutes.
9. The method for circulating compressor oil according to claim 1, wherein the step of cleaning and installing comprises the steps of cleaning the oil pipe in sections, and dragging the oil pipe back and forth by cloth dipping cleaning agent until the cloth is clean.
10. The method of claim 1, wherein the step of cleaning the oil station tank includes cleaning the oil station tank by using a dough ball, and then filling the oil station tank with filtered flushing oil.
CN202010539773.2A 2020-06-13 2020-06-13 Compressor oil circulation method Pending CN111715635A (en)

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CN104929911A (en) * 2015-06-02 2015-09-23 中石化第四建设有限公司 Oil circulation method of compressor unit
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CN112845343B (en) * 2021-01-14 2023-11-24 安徽富乐泰水泵***有限公司 Production process of high-cleanliness pump

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