CN104624575A - Method for flushing hydraulic pipe oil through hydraulic power unit equipment - Google Patents
Method for flushing hydraulic pipe oil through hydraulic power unit equipment Download PDFInfo
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- CN104624575A CN104624575A CN201310547260.6A CN201310547260A CN104624575A CN 104624575 A CN104624575 A CN 104624575A CN 201310547260 A CN201310547260 A CN 201310547260A CN 104624575 A CN104624575 A CN 104624575A
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- oil
- flushing
- power unit
- hydraulic power
- fluid pressure
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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
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- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a method for flushing hydraulic pipe oil through hydraulic power unit equipment. The method is applicable to off-line acid pickling and stainless steel pipes. The pressure, flow velocity and flow of the hydraulic power unit equipment are matched with a device pipe to be flushed in the design process. The method is characterized by comprising the steps of preparation before hydraulic pipe oil flushing, main hydraulic pipe flushing, branch hydraulic pipe flushing and oil sample detection. The method for flushing the hydraulic pipe oil through the hydraulic power unit equipment has the advantages that the flow, pressure and flow velocity of the oil flushing equipment are matched with those of the device pipe to be flushed, the oil cleanliness which is originally designed in the NAS7 grade is improved to be higher than the NAS5 grade, the construction period is shortened, and the economical benefit is remarkable.
Description
Technical field
The present invention relates to a kind of conduit under fluid pressure oil flushing method, specifically, is that one utilizes hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method.
Background technology
Conduit under fluid pressure oil flushing is a vital operation in conduit under fluid pressure installation process, and its quality directly has influence on the debugging of whole hydraulic system, reliability, service life.But the flushing pumping plant that known conduit under fluid pressure oil flushing uses all is difficult to mate at flow velocity, flow, pressure with wanting flusher pipeline, cause that washing time is long, quality is unstable, flushing oil consumption greatly, costly.
Therefore known flushing pump stands in conduit under fluid pressure oil flushing and there is above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, is that proposing a kind of hydraulic power unit equipment carries out conduit under fluid pressure oil flushing method when designing with the hydraulic power unit equipment that utilizes wanting the flow velocity of service unit system pipeline, flow, pressure to match.
Another object of the present invention, be to propose a kind of fluid is washed away at inner-walls of duct number of times and carry out conduit under fluid pressure oil flushing method by the hydraulic power unit equipment that utilizes that the cycle-index of filter is many.
For achieving the above object, technical solution of the present invention is:
One utilizes hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method, be applicable to off-line pickling and stainless steel pipes, hydraulic power unit capital equipment comprises: variable pump (main pump), screw pump (auxiliary pump), fuel tank, internal circulation filtering device, plate type heat exchanger, heater, outlet filter, oil return house steward filter and automatic PLC control system composition.Equipment hydraulic power unit is made up of the dynamical system formed with variable pump, outlet filter, oil return house steward filter, plate type heat exchanger etc. two Iarge-scale system; Form internal circulation system by screw pump, internal circulation filtering device etc., share a fuel tank and heater.Its every technical data by service apparatus system size different, main pump by 2 to multiple stage; General 2 of auxiliary pump, main pump is different with engineering machinery by engineering, the multiplex variable radial-plunger pump of common engineering.Due to varying in size of service unit system, therefore; Just can not accomplish the economic and practical oil flushing equipment can satisfied the demand at pressure, flow velocity, flow.And utilize hydraulic power unit equipment its pressure, flow velocity, flow and the apparatus system that will serve when designing to match characteristic, it is characterized in that comprising the following steps:
Preparation before a, conduit under fluid pressure oil flushing, comprises following steps:
(1) thick flushing all uses body pump with essence flushing; Change segmentation, burst into overall flushing;
(2) the overall connecting leg of pipeline, > DN50 pipe adopts compressed air to blow clean in pipe; < DN50 pipe adopts SF-600 Pneumatic pipe to clean rifle purge tube inwall;
(3) use working oil to do the first step to rinse: first kick-off valve platform, rinse all pipelines;
(4) use working oil to do second step to rinse: after first step flushing is up to standard, bring valve platform to carry out second time and rinse from valve platform to each executing agency's pipeline;
B, conduit under fluid pressure main pipeline rinse, and comprise following steps:
(1) valve of all valve platforms is closed;
(2) valve (from hydraulic valve platform to oil return house steward filter pipes) of hydraulic power unit P pipe (from main pump to hydraulic valve platform pipeline), T pipe is opened;
(3) supervisor's leakage situation is checked, if to leak, termination of pumping process;
(4) supervisor's valve of open valve platform successively, and leak check situation;
(5) open two main pumps in addition again and carry out supervisor's flushing, its pipeline pressure at 2.0MPa, suitably should adjust pressure as do not reached, and determines whether open a pump again depending on pressure condition;
(6) rinse after 4 hours ~ 6 hours and with soft hammer, supervisor is knocked, especially commissure and pipeline turning place;
C, conduit under fluid pressure branch pipe(tube) rinse, and comprise following steps:
(1) under stopped status, shutoff is carried out to P, T nipple blind plate of valve platform;
(2) open 2 main pumps, supervisor's valve of open valve platform and arm valve, carry out leak test to each arm successively;
(3) open 2 main pumps more in addition to rinse, and suitably adjust pressure depending on pipe network liquid resistance situation;
(4) rinse after 4 hours or 6 hours and with soft hammer, arm is knocked, especially commissure and pipeline turning place;
D, oil sample detect
Online examination criteria is used to adopt NAS; Flushing oil cleannes are by designing requirement.
Of the present inventionly utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method can also to be further achieved by the following technical measures.
Aforesaid method, in wherein said step a, oil return house steward filter core precision 22um, internal circulation of hydraulic station oil return house steward filter core precision 7um when the first step is rinsed.
Aforesaid method, in wherein said step a, oil return house steward filter core precision 10um, internal circulation of hydraulic station oil return house steward filter core precision 5um when second step rinses.
Aforesaid method, in wherein said step b, supervisor's washing time is as the criterion with cleannes, but the shortlyest must not be less than 36 hours.
Aforesaid method, in wherein said step b, in flushing process, Oil-temperature control is at 60 ~ 70 DEG C.
Aforesaid method, in wherein said step b, in flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time.
Aforesaid method, in wherein said step b, checks a luboil cleanness in flushing process every 2 hours, and notes filter turnover pressure reduction variation tendency.
Aforesaid method, in wherein said step b, if must change filter element in flushing process, filter cartridge inner fluid does waste oil disposal.
Aforesaid method, in wherein said step c, arm washing time is as the criterion with cleannes, but the shortlyest must not be less than 72 hours.
Aforesaid method, in wherein said step c, in flushing process, Oil-temperature control is at 60 ~ 70 DEG C;
Aforesaid method, in wherein said step c, in flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time.
Aforesaid method, in wherein said step c, all proportions valve is installed and is rinsed plate, note the protection of comparative example valve, and washing time is no less than 36 hours.
Adopt after technique scheme, of the present inventionly utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method to have the following advantages:
1, oil flushing equipment is made to mate on flow, pressure, flow velocity with wanting flusher pipeline;
2, improve luboil cleanness from former design NAS7 level, actually reach more than NAS5 level;
3, reduction of erection time, remarkable in economical benefits.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is illustrated further.
Embodiment 1
The hydraulic power unit equipment that utilizes of the present invention carries out conduit under fluid pressure oil flushing method, and hydraulic power unit capital equipment comprises: variable pump (main pump), screw pump (auxiliary pump), fuel tank, internal circulation filtering device, plate type heat exchanger, heater, outlet filter, oil return house steward filter and automatic PLC control system composition.Equipment hydraulic power unit is made up of the dynamical system formed with variable pump, outlet filter, oil return house steward filter, plate type heat exchanger etc. two Iarge-scale system; Form internal circulation system by screw pump, internal circulation filtering device etc., share a fuel tank and heater.Its every technical data by service device size different, main pump by 2 to multiple stage; Auxiliary pump is generally by 2, and main pump is different with engineering machinery by engineering, the multiplex variable radial-plunger pump of common engineering.Due to varying in size of service unit, therefore; Just can not accomplish the economic and practical oil flushing equipment can satisfied the demand at pressure, flow velocity, flow.And hydraulic power unit equipment its pressure, flow velocity, flow and the apparatus system that will serve when designing of utilizing of the present invention matches characteristic, hydraulic power unit equipment its pressure, flow velocity, flow and installing pipes of will serving when designing match, and it is characterized in that comprising the following steps:
Preparation before a, conduit under fluid pressure oil flushing, comprises following steps:
(1) thick flushing all uses body pump with essence flushing; Change segmentation, burst into overall flushing;
(2) the overall connecting leg of pipeline, > DN50 pipe adopts compressed air to blow clean in pipe; Purging Stress control adopts SF-600 Pneumatic pipe to clean rifle purge tube inwall at 0.3MPa, < DN50 pipe;
(3) use working oil to do the first step to rinse: first kick-off valve platform, rinse all pipelines; Oil return house steward filter core precision 22um, internal circulation of hydraulic station oil return house steward filter core precision 7um when the first step is rinsed;
(4) use working oil to do second step to rinse: after first step flushing is up to standard, bring valve platform to carry out second time to rinse, oil return house steward filter core precision 10um when second step rinses, internal circulation of hydraulic station oil return house steward filter core precision 5um, so just uniting two into one slightly rinsing with essence flushing, being just divided into two steps.
B, conduit under fluid pressure main pipeline rinse, and comprise following steps:
(1) valve of all valve platforms is closed;
(2) valve (from hydraulic valve platform to oil return house steward filter pipes) of hydraulic power unit P pipe (from main pump to hydraulic valve platform pipeline), T pipe is opened;
(3) supervisor's leakage situation is checked, if to leak, termination of pumping process;
(4) supervisor's valve of open valve platform successively, and leak check situation;
(5) open two main pumps in addition again and carry out supervisor's flushing, and suitably adjust pressure, and determine whether open a pump again depending on pressure condition;
(6) rinse after 4 hours ~ 6 hours and with soft hammer, supervisor is knocked, especially commissure and pipeline turning place;
Wherein: when conduit under fluid pressure main pipeline rinses, supervisor's washing time is as the criterion with cleannes, but the shortlyest must not be less than 36 hours; In flushing process, Oil-temperature control is at 60 ~ 70 DEG C; In flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time; Within in flushing process every 2 hours, check a luboil cleanness (comprising fuel tank), and note filter turnover pressure reduction variation tendency; If must change filter element in flushing process, filter cartridge inner fluid does waste oil disposal.
C, conduit under fluid pressure branch pipe(tube) rinse, and comprise following steps:
(1) under stopped status, shutoff is carried out to P, T nipple blind plate of valve platform;
(2) open 2 main pumps, supervisor's valve of open valve platform and arm valve, carry out leak test to each arm successively;
(3) open 2 main pumps more in addition to rinse, and suitably adjust pressure (based on raised pressure) depending on pipe network liquid resistance situation;
(4) rinse after 4 hours or 6 hours and with soft hammer, arm is knocked, especially commissure and pipeline turning place;
Wherein: when conduit under fluid pressure branch pipe(tube) rinses, arm washing time is as the criterion with cleannes, but the shortlyest must not be less than 72 hours; In flushing process, Oil-temperature control is at 60 ~ 70 DEG C; In flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time; All proportions valve is installed and is rinsed plate, note the protection of comparative example valve, and washing time must not be less than 36 hours.
D, oil sample detect and use online examination criteria to adopt NAS; Flushing oil cleannes are by designing requirement.
The situation of change of luboil cleanness in each time period pipeline can be reflected very intuitively, until complete whole conduit under fluid pressure oil flushing in oil flushing process.
The present invention has substantive distinguishing features and significant technological progress, of the present invention utilize hydraulic power unit equipment carry out conduit under fluid pressure oil flushing method solve in the past construction in oil flushing equipment with want flusher pipeline in flow, pressure, the unmatched problem of flow velocity, the duration shortening, remarkable in economical benefits.
Of the present invention utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method in the precious 460 tube rolling engineering of cigarette 6 Hydraulic Station oil flushings, implement its effect as follows:
1, the duration
Adopt conventional method to rinse plan average each Hydraulic Station 12 days, 6 Hydraulic Stations 72 days, and adopt the method altogether to use 33 days, shortens 39 days, each Hydraulic Station flushing shorten in average 6.5 days.
2, quality
Luboil cleanness, from former design NAS7 level, actually reaches more than NAS5 level.
3, economic benefit
1. body pump, is used to rinse not at use flushing oil; Directly use work oil flushing.6 Hydraulic Stations can fuel-economizing 32# antiwear hydraulic oil 72t, with 8000 yuan/t, can save 576000 yuan.
, oil flushing equipment; Freight charges (haul distance Shanghai is to Yantai), equipment leasing expense were in 72 days; By 900 yuan of/day calculating, 40000(freight charges)+64800(equipment leasing expense)=104800 yuan, the idleness of equipment is not charged to.
, shorten activity time 39 days; In 6 people, 200 yuan/day per capita; 39 days=46800 yuan.
, amount to saving 727600 yuan.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (12)
1. one kind utilizes hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method, be applicable to off-line pickling and stainless steel pipes, hydraulic power unit capital equipment comprises: variable pump, screw pump, fuel tank, internal circulation filtering device, plate type heat exchanger, heater, outlet filter, oil return house steward filter and automatic PLC control system, and equipment hydraulic power unit is made up of the dynamical system formed with variable pump, outlet filter, oil return house steward filter, plate type heat exchanger etc. two Iarge-scale system; Form internal circulation system by screw pump, internal circulation filtering device etc., share a fuel tank and heater, its every technical data is different by the apparatus system size of service, variable pump by 2 to multiple stage; General 2 of screw pump, variable pump is different with engineering machinery by engineering, the multiplex variable radial-plunger pump of common engineering, utilizing hydraulic power unit equipment its pressure, flow velocity, flow and the apparatus system that will serve when designing to match characteristic, it is characterized in that comprising the following steps:
Preparation before a, conduit under fluid pressure oil flushing, comprises following steps:
(1) thick flushing all uses body pump with essence flushing; Change segmentation, burst into overall flushing;
(2) the overall connecting leg of pipeline, > DN50 pipe adopts compressed air to blow clean in pipe, purges Stress control at 0.3MPa; < DN50 pipe adopts SF-600 Pneumatic pipe to clean rifle purge tube inwall;
(3) use working oil to do the first step to rinse: first kick-off valve platform, rinse all pipelines;
(4) use working oil to do second step to rinse: after first step flushing is up to standard, bring valve platform to carry out second time and rinse from control valve platform to each executing agency pipeline;
B, conduit under fluid pressure main pipeline rinse, and comprise following steps:
(1) valve of all valve platforms is closed;
(2) open hydraulic power unit and start a variable pump from variable pump to hydraulic valve platform pipeline, from hydraulic valve platform to the valve of oil return house steward filter pipes;
(3) supervisor's leakage situation is checked, if to leak, termination of pumping process;
(4) supervisor's valve of open valve platform successively, and leak check situation;
(5) open a variable pump again and carry out supervisor's flushing, its pipeline pressure at 2.0MPa, suitably should adjust pressure as do not reached, and determines whether open one or more variable pump again depending on pressure condition;
(6) rinse after 4 hours ~ 6 hours and with soft hammer, supervisor is knocked, especially commissure and pipeline turning place;
C, conduit under fluid pressure branch pipe(tube) rinse, and comprise following steps:
(1) under stopped status, to oil return house steward filter pipes nipple blind plate, shutoff is carried out from variable pump to hydraulic valve platform pipeline, from hydraulic valve platform to valve platform;
(2) open 2 variable pumps, supervisor's valve of open valve platform and arm valve, carry out leak test to each arm successively;
(3) open 2 variable pumps more in addition to rinse, and suitably adjust pressure at 2.0MPa depending on pipe network liquid resistance situation;
(4) rinse after 4 hours or 6 hours and with soft hammer, arm is knocked, especially commissure and pipeline turning place;
D, oil sample detect
Use on-line checkingi, standard adopts NAS; Flushing oil cleannes are by designing requirement.
2. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step a, oil return house steward filter core precision 22um, internal circulation of hydraulic station oil return house steward filter core precision 7um when the first step is rinsed.
3. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step a, oil return house steward filter core precision 10um, internal circulation of hydraulic station oil return house steward filter core precision 5um when second step rinses.
4. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step b, supervisor's washing time is as the criterion with cleannes, but the shortlyest must not be less than 36 hours.
5. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step b, in flushing process, Oil-temperature control is at 60 ~ 70 DEG C.
6. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step b, in flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time.
7. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step b, within flushing process every 2 hours, check a luboil cleanness, and note filter turnover pressure reduction variation tendency.
8. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step b, if must change filter element in flushing process, filter cartridge inner fluid does waste oil disposal.
9. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step c, arm washing time is as the criterion with cleannes, but the shortlyest must not be less than 72 hours.
10. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step c, in flushing process, Oil-temperature control is at 60 ~ 70 DEG C.
11. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step c, in flushing process, oil temperature is not less than 50 DEG C, if oil temperature is lower than 50 DEG C, when fuel tank heater can not meet above oil temperature, an available main pump carries out high pressure kicks heating, checks oil return pipe temperature at any time.
12. utilize hydraulic power unit equipment to carry out conduit under fluid pressure oil flushing method as claimed in claim 1, it is characterized in that, in described step c, all proportions valve is installed and rinsed plate, note the protection of comparative example valve, and washing time is no less than 36 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547260.6A CN104624575B (en) | 2013-11-08 | 2013-11-08 | Method for flushing hydraulic pipe oil through hydraulic power unit equipment |
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|---|---|---|---|
| CN201310547260.6A CN104624575B (en) | 2013-11-08 | 2013-11-08 | Method for flushing hydraulic pipe oil through hydraulic power unit equipment |
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| CN104624575B CN104624575B (en) | 2017-04-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105798024A (en) * | 2016-05-11 | 2016-07-27 | 广西玉柴机器配件制造有限公司 | Normal temperature cleaning method for pulse water-cooling exhaust pipe of heavy diesel engine |
| CN106964612A (en) * | 2017-05-26 | 2017-07-21 | 中国二十冶集团有限公司 | Hydraulic pipeline oil flushing method |
| CN108262314A (en) * | 2018-01-17 | 2018-07-10 | 山东钢铁集团日照有限公司 | Hydraulic pipeline high-efficiency rinsing method |
| CN108723020A (en) * | 2017-04-25 | 2018-11-02 | 中国二十冶集团有限公司 | High-pressure aerated turbulent flow fluid pressure line oil flushing equipment and its application method |
| CN113560279A (en) * | 2021-04-29 | 2021-10-29 | 江苏核电有限公司 | Low-temperature environment oil cleaning system and process for pipeline of nuclear power station diesel system |
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| CN106964612A (en) * | 2017-05-26 | 2017-07-21 | 中国二十冶集团有限公司 | Hydraulic pipeline oil flushing method |
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| CN108262314A (en) * | 2018-01-17 | 2018-07-10 | 山东钢铁集团日照有限公司 | Hydraulic pipeline high-efficiency rinsing method |
| CN113560279A (en) * | 2021-04-29 | 2021-10-29 | 江苏核电有限公司 | Low-temperature environment oil cleaning system and process for pipeline of nuclear power station diesel system |
| CN113560279B (en) * | 2021-04-29 | 2023-08-15 | 江苏核电有限公司 | Nuclear power station diesel system pipeline low-temperature environment oil cleaning system and process thereof |
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|---|---|
| CN104624575B (en) | 2017-04-19 |
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