CN102837156A - On-site tubing method of rolling mill body - Google Patents
On-site tubing method of rolling mill body Download PDFInfo
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- CN102837156A CN102837156A CN201110172109XA CN201110172109A CN102837156A CN 102837156 A CN102837156 A CN 102837156A CN 201110172109X A CN201110172109X A CN 201110172109XA CN 201110172109 A CN201110172109 A CN 201110172109A CN 102837156 A CN102837156 A CN 102837156A
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- flushing
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- milling train
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Abstract
The invention relates to the field of rolling mill installation, in particular to an on-site tubing method of a rolling mill body. The on-site tubing method of the rolling mill body comprises a material preparation step; a construction site planning step; a constructor allocation step; a construction tool preparation step; an on-site pipeline manufacturing step; a system flushing step by flushing with a pump; and a test run step, i.e. further improving the installation of the tubes of a mill body during test run. Compared with a traditional method, according to the on-site tubing method of the rolling mill body, the workload is smaller, the construction period is shorter, the actual operation is more convenient, and the impact on the normal use of equipment is smaller.
Description
Technical field
The present invention relates to milling train and install, relate in particular to milling train body pipe arrangement method.
Background technology
Milling train body piping work is one of major tasks after mill housing is installed.The various energy medium of milling train body are all carried through the body pipe arrangement, and trouble-free operation has important function to production line of rolling mill to accomplish the installment work of body pipe arrangement fast and efficiently.
The mounting process of body pipe arrangement is that device fabrication producer is prefabricated at workshop according to the pipe arrangement drawing at present.Carry out interim pump flushing (workload of flushing is bigger) after the prefabricated completion, seal pipe end then and be transported to the job site and install.The prefabricated process of the method inevitably causes prefabricated pipeline and job site actual installation situation not to be inconsistent, and section of tubing needs scene fabrication and installation again.In addition, easy for installation for transportation with the scene, need a large amount of adpting flange and pipe joint on the pipeline.After treating system's operation, this part flange and pipe joint will inevitably become the leakage point of medium, bring a lot of inconvenience for follow-up repair and maintenance.Once more, in the connection procedure, the interface position certainly exists powerful to lip reflex prefabricated pipeline, influences the operation and the sense organ effect of system at the scene.This method workload is big, long construction period, practical operation difficulty.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and provides a kind of milling train body on-the-spot pipe arrangement method.The present invention is littler than the conventional method workload, short construction period, practical operation are convenient, normally use influence to lack to equipment.
For addressing the above problem, the on-the-spot pipe arrangement method of a kind of milling train body, it comprises the following steps:
The material planning step:
According to body pipe arrangement drawing, in conjunction with on-site actual situations, buy each system construction material, mainly comprise tubing, pipe fitting, valve, instrument;
The builder's yard planning step:
Construction temporary electricity load and configuration are applied for using according to production and installation requirements in advance, comprise time and user demand amount; Make the as close as possible milling train body in place and guarantee that passage is smooth and easy;
Workmen's configuration step:
According to piping work amount size, select workmen and construction operation troop; Set up personnel's quality safety management system;
The construction equipment preparation process:
Mainly comprise electric welding machine, hydraulic pipe bender, beveling machine, cutting machine, sawing machine, abrasive machine;
Pipeline field fabrication step:
Milling train body pipe arrangement pipeline mainly is divided into low-pressure hydraulic system, high-pressure hydraulic, lubricating system, cooling water system, high pressure water system according to medium system, and instrument system is main with hydraulic pressure and lubricating system construction wherein, and the water system construction is auxilliary;
System's rinsing step: adopt the flushing of this pump, with the unified flushing of laggard interline pipe arrangement of each system's installation and body pipe arrangement;
Test running step: in the test running process, further perfect to the installment work of body pipe arrangement.
The on-the-spot pipe arrangement method of described milling train body, said pipeline field fabrication step mesolow hydraulic system mainly are working roll and backing roll counter lock clamping system, backing roll elevator system, water tank balance sysmte, the main shaft balance sysmte;
Wherein the valve platform of water tank balance sysmte is at the milling train top; Main line will pass through milling train entrance side fore side and lay; Balance support system main line also is installed in this in the high-pressure hydraulic simultaneously, and this section of tubing adopts outside the interior earlier back, the sequence of construction of little caliber behind the earlier big caliber;
High-pressure hydraulic mainly is backing roll thruster, backing roll balance, work roll bending, AGC hose system; Wherein backing roll balanced valve platform is installed with the said low-pressure hydraulic system main line of stating at the milling train top simultaneously, high-pressure hydraulic mainly comprise the roller system, this section of tubing adopts and is welded to connect a construction molding; After hydraulic pressure and the basic completion of lubricating system construction, the construction of beginning water system.
The on-the-spot pipe arrangement method of described milling train body; After said system rinsing step also is included in the system pipeline installation; Make system get into the circulation flushing operation as soon as possible; Utilize the working barrel of system itself to be combined into suitable flushing flow rate, and be rinsed when washing according to this flushing flow rate the loop along the suitable flushing pressure of stroke pressure loss size adjustment to reach best circulation flushing effect;
At first, using system working barrel, operating oil tank and working oil are carried out circulation flushing to pumping plant to the trunk line between the vavle shelf (P&T&Y) earlier;
Secondly, after the main line flushing is qualified, trunk line and valve platform are resetted, again the branch pipe(tube) A&B behind the valve platform is carried out circulation flushing; The formation in circulation flushing loop should be able to make in each pipeline section inwall and be full of flushing oil, forms several loops according to system size, and each return size is close; The circulation cold filtration device of pumping plant also comes into operation during flushing, and the oil temperature of utilizing this apparatus control system is in 45 ℃ ~ 65 ℃ scope; During flushing,, start stand-by pump in case of necessity, the pressure of system be raised to carry out big flow, high pressure, high temperature in the 3.0MPa-7.0MPa scope and wash operation continuously for guaranteeing flushing flow rate, wash qualified after with the dismounting of interim loop, system is resetted.
The on-the-spot pipe arrangement method of described milling train body, said test running step will be checked all pipelines before comprising the unloaded test run of system the content of inspection is whether all weld seams are all accomplished; Whether all flanges connect all fastening; Whether all valves all open and close is put in place; Like the discovery pipe welding seam leakage is arranged in the test running process, termination of pumping release immediately, and, just can carry out repair welding with after oil drains in the pipeline; If pipeline junction has leakage, like flange, joint, also after the answering system release, handle, forbid to hold the pressure operation; After test running was qualified, the body pipe arrangement of whole rolling had reached stable operation, and each system gets into the critical condition of trial production.
The present invention surveys the installment work that actual quantities is carried out pipeline at the construction field (site).The present invention reduces the shop-fabricated error to greatest extent, but installation process time update drawing and the on-the-spot fabrication and installation that are not inconsistent pipeline are saved and done over again the time in a large number; The field fabrication pipe laying can save owing to adpting flange and the pipe joint of considering that the transportation factor increases, has saved material cost, welding job amount, maintenance and maintenance workload; The pipeline of this method construction is easier to control at work progress, and the pipeline of installation is natural, attractive in appearance; Unification is washed after can being connected to form system with middle pipe arrangement after the pipeline installation, avoids a large amount of interim flushing pipes that the saving washing time is installed.This method is littler than the conventional method workload, short construction period, practical operation are convenient, normally use influence to lack to equipment.
The specific embodiment
The on-the-spot pipe arrangement method of a kind of milling train body,, it comprises the following steps:
The material planning step:
According to body pipe arrangement drawing, in conjunction with on-site actual situations, buy each system construction material, mainly comprise tubing, pipe fitting, valve, instrument;
The builder's yard planning step:
Construction temporary electricity load and configuration are applied for using according to production and installation requirements in advance, comprise time and user demand amount; Make the as close as possible milling train body in place and guarantee that passage is smooth and easy;
Workmen's configuration step:
According to piping work amount size, select workmen and construction operation troop; Set up personnel's quality safety management system;
The construction equipment preparation process:
Mainly comprise electric welding machine, hydraulic pipe bender, beveling machine, cutting machine, sawing machine, abrasive machine;
Pipeline field fabrication step:
Milling train body pipe arrangement pipeline mainly is divided into low-pressure hydraulic system, high-pressure hydraulic, lubricating system, cooling water system, high pressure water system, instrument system according to medium system.Be main with hydraulic pressure and lubricating system construction wherein, the water system construction is auxilliary.The low-pressure hydraulic system mainly is working roll and backing roll counter lock clamping system, backing roll elevator system, water tank balance sysmte, the main shaft balance sysmte.Wherein the pipeline of backing roll elevator system and balance fastening system is more but caliber is less relatively; Mainly concentrate on milling train bottom and fore side; The main shaft portion pipeline is less and construction space is loose relatively, so the construction of this part pipeline is simple relatively, the pipeline welding amount is less.The valve platform of water tank balance sysmte is at the milling train top; Main line will pass through milling train entrance side fore side and lay; Consider that simultaneously balance support system main line also is installed on this support in the high-pressure hydraulic; This section of tubing construction combines the pipeline characteristics, adopts outside the interior earlier back sequence of construction of little caliber behind the earlier big caliber; High-pressure hydraulic mainly is backing roll thruster, backing roll balance, work roll bending, AGC (flexible pipe) system.Wherein backing roll balanced valve platform is at the milling train top, installs simultaneously with aforesaid low-pressure hydraulic system main line, just carries out the interface work of pipeline at present, and workload is less relatively.Backing roll thruster system pipeline is less, installs simple.The workload of high-pressure hydraulic mainly concentrates on the roller system; This section of tubing welding capacity is bigger, be similarly rigid tubing with the oil cylinder interface and be connected, and this part trunk line is installed concentratedly on transmission side and fore side side wall; Be welded to connect through consulting to adopt, guarantee one time construction molding.After hydraulic pressure and the basic completion of lubricating system construction, the construction of beginning water system, water-system pipeline is less relatively, and it is simple relatively to construct.In the work progress, carry out the construction planning that the body pipeline is installed in strict accordance with each system debug node;
System's rinsing step: adopt the flushing of this pump, with the unified flushing of laggard interline pipe arrangement of each system's installation and body pipe arrangement.After the system pipeline installation, should make system get into the circulation flushing operation as soon as possible.Utilize some working barrels of system itself to be combined into suitable flushing flow rate, and be rinsed when washing according to this flushing flow rate the loop along the suitable flushing pressure of stroke pressure loss size adjustment to reach best circulation flushing effect.At first, using system working barrel, operating oil tank and working oil are carried out circulation flushing to pumping plant to the trunk line between the vavle shelf (P&T&Y) earlier.Secondly, after the main line flushing is qualified, trunk line and valve platform are resetted, again the branch pipe(tube) behind the valve platform (A&B) is carried out circulation flushing.The formation in circulation flushing loop should be able to make in each pipeline section inwall and be full of flushing oil, forms several loops according to system size, and each return size should be close.The circulation cold filtration device of pumping plant also comes into operation during flushing, and the oil temperature of utilizing this apparatus control system is in 45 ℃ ~ 65 ℃ optimum range.During flushing, be to guarantee flushing flow rate, stand-by pump also will start in case of necessity, the pressure of system is raised to carries out big flow, high pressure, high temperature in the 3.0MPa-7.0MPa scope and wash operation continuously.Wash and interim loop is removed after qualified, system is resetted.
Test running step: in the test running process, further perfect to the installment work of body pipe arrangement.In order to guarantee carrying out smoothly of each system debug work, must formulate the test running scheme before the debugging, and set up debugging group and machinery, electrical apparatus technology personnel close fit, in a organized way, be done step by step.Before the unloaded test run of system, all pipelines are checked the content of inspection is whether all weld seams are all accomplished; Whether all flanges connect all fastening; Whether all valves all open and close is put in place.Like the discovery pipe welding seam leakage is arranged in the test running process, termination of pumping release immediately, and, just can carry out repair welding with after oil drains in the pipeline.If pipeline connects (flange, joint) leakage is arranged, also after the answering system release, handle, forbid to hold the pressure operation.After test running was qualified, the body pipe arrangement of whole rolling had reached stable operation, and each system gets into the critical condition of trial production.
Claims (4)
1. the on-the-spot pipe arrangement method of milling train body is characterized in that it comprises the following steps:
The material planning step:
According to body pipe arrangement drawing, in conjunction with on-site actual situations, buy each system construction material, mainly comprise tubing, pipe fitting, valve, instrument;
The builder's yard planning step:
Construction temporary electricity load and configuration are applied for using according to production and installation requirements in advance, comprise time and user demand amount; Make the as close as possible milling train body in place and guarantee that passage is smooth and easy;
Workmen's configuration step:
According to piping work amount size, select workmen and construction operation troop; Set up personnel's quality safety management system;
The construction equipment preparation process:
Mainly comprise electric welding machine, hydraulic pipe bender, beveling machine, cutting machine, sawing machine, abrasive machine;
Pipeline field fabrication step:
Milling train body pipe arrangement pipeline mainly is divided into low-pressure hydraulic system, high-pressure hydraulic, lubricating system, cooling water system, high pressure water system according to medium system, and instrument system is main with hydraulic pressure and lubricating system construction wherein, and the water system construction is auxilliary;
System's rinsing step: adopt the flushing of this pump, with the unified flushing of laggard interline pipe arrangement of each system's installation and body pipe arrangement;
Test running step: in the test running process, further perfect to the installment work of body pipe arrangement.
2. the on-the-spot pipe arrangement method of milling train body according to claim 1; It is characterized in that; Said pipeline field fabrication step mesolow hydraulic system mainly is working roll and backing roll counter lock clamping system, backing roll elevator system, water tank balance sysmte, the main shaft balance sysmte;
Wherein the valve platform of water tank balance sysmte is at the milling train top; Main line will pass through milling train entrance side fore side and lay; Balance support system main line also is installed in this in the high-pressure hydraulic simultaneously, and this section of tubing adopts outside the interior earlier back, the sequence of construction of little caliber behind the earlier big caliber;
High-pressure hydraulic mainly is backing roll thruster, backing roll balance, work roll bending, AGC hose system; Wherein backing roll balanced valve platform is at the milling train top, install simultaneously with described low-pressure hydraulic system main line, high-pressure hydraulic mainly comprise the roller system, this section of tubing adopts and is welded to connect a construction molding; After hydraulic pressure and the basic completion of lubricating system construction, the construction of beginning water system.
3. the on-the-spot pipe arrangement method of milling train body according to claim 1; It is characterized in that; After said system rinsing step also is included in the system pipeline installation; Make system get into the circulation flushing operation as soon as possible, utilize the working barrel of system itself to be combined into suitable flushing flow rate, and be rinsed the loop when wash and adjust suitable flushing pressure to reach the circulation flushing effect of the best along the stroke pressure loss is big or small according to this flushing flow rate;
At first, using system working barrel, operating oil tank and working oil are carried out circulation flushing to pumping plant to the trunk line between the vavle shelf (P&T&Y) earlier;
Secondly, after the main line flushing is qualified, trunk line and valve platform are resetted, again the branch pipe(tube) A&B behind the valve platform is carried out circulation flushing; The formation in circulation flushing loop should be able to make in each pipeline section inwall and be full of flushing oil, forms several loops according to system size, and each return size is close; The circulation cold filtration device of pumping plant also comes into operation during flushing, and the oil temperature of utilizing this apparatus control system is in 45 ℃ ~ 65 ℃ scope; During flushing,, start stand-by pump in case of necessity, the pressure of system be raised to carry out big flow, high pressure, high temperature in the 3.0MPa-7.0MPa scope and wash operation continuously for guaranteeing flushing flow rate, wash qualified after with the dismounting of interim loop, system is resetted.
4. the on-the-spot pipe arrangement method of milling train body according to claim 1 is characterized in that, said test running step will be checked all pipelines before comprising the unloaded test run of system the content of inspection is whether all weld seams are all accomplished; Whether all flanges connect all fastening; Whether all valves all open and close is put in place; Like the discovery pipe welding seam leakage is arranged in the test running process, termination of pumping release immediately, and, just can carry out repair welding with after oil drains in the pipeline; If pipeline junction has leakage, like flange, joint, also after the answering system release, handle, forbid to hold the pressure operation; After test running was qualified, the body pipe arrangement of whole rolling had reached stable operation, and each system gets into the critical condition of trial production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110172109XA CN102837156A (en) | 2011-06-24 | 2011-06-24 | On-site tubing method of rolling mill body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110172109XA CN102837156A (en) | 2011-06-24 | 2011-06-24 | On-site tubing method of rolling mill body |
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| Publication Number | Publication Date |
|---|---|
| CN102837156A true CN102837156A (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110172109XA Pending CN102837156A (en) | 2011-06-24 | 2011-06-24 | On-site tubing method of rolling mill body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962793A (en) * | 2014-04-03 | 2014-08-06 | 中国十七冶集团有限公司 | Method for hoisting vertical type rolling mill speed reducer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000280011A (en) * | 1999-03-31 | 2000-10-10 | Kawasaki Steel Corp | Hot-rolled steel sheet strip flatness controlling method and equipment |
| CN101091953A (en) * | 2006-06-19 | 2007-12-26 | 上海宝冶建设有限公司 | Flushing and installing methods by using online raw liquor press pump under piping once |
| US20080257647A1 (en) * | 2005-11-08 | 2008-10-23 | Posco | Apparatus and Method for Supplying Lubricant in Endless Hot Rolling Equipment |
-
2011
- 2011-06-24 CN CN201110172109XA patent/CN102837156A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000280011A (en) * | 1999-03-31 | 2000-10-10 | Kawasaki Steel Corp | Hot-rolled steel sheet strip flatness controlling method and equipment |
| US20080257647A1 (en) * | 2005-11-08 | 2008-10-23 | Posco | Apparatus and Method for Supplying Lubricant in Endless Hot Rolling Equipment |
| CN101091953A (en) * | 2006-06-19 | 2007-12-26 | 上海宝冶建设有限公司 | Flushing and installing methods by using online raw liquor press pump under piping once |
Non-Patent Citations (2)
| Title |
|---|
| 夏友木: "大型热连轧轧钢生产线设备安装工艺优化研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 裘启春: "高速线材精轧机润滑系统的配管安装和冲洗", 《中国设备工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962793A (en) * | 2014-04-03 | 2014-08-06 | 中国十七冶集团有限公司 | Method for hoisting vertical type rolling mill speed reducer |
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Application publication date: 20121226 |