CN104862498B - Electron beam furnace installation engineering method - Google Patents
Electron beam furnace installation engineering method Download PDFInfo
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- CN104862498B CN104862498B CN201510307949.0A CN201510307949A CN104862498B CN 104862498 B CN104862498 B CN 104862498B CN 201510307949 A CN201510307949 A CN 201510307949A CN 104862498 B CN104862498 B CN 104862498B
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Abstract
The present invention relates to a kind of electron beam furnace installation engineering method, the first preparation of construction: at ground floor, on the basis of working chamber, determine longitudinal centre line one, cross central line one, throw in vertically and horizontally center line at each absolute altitude layer the most respectively；Second draws ingot system to install；3rd installs working chamber's basic stand column and ground floor steel structure platform from bottom to top；4th working chamber installs；5th collection chamber is installed and diffusion pump is installed；6th main feeder is installed；7th second layer steel structure platform installation from bottom to top；8th Rotary feeder is installed；9th lid dolly is installed；Tenth vacuum system is installed.The method is given overall consideration to, and weakens specialty and divides, and according to different level, different system etc., optimizes equipment erection sequence；Additionally positioning datum point is invested in ± 0.000m ground, arranges installation reference line at each absolute altitude podium level, can make multilayer higher device centering benchmark.
Description
Technical field
The present invention relates to electron beam furnace installation engineering method.
Background technology
Electron beam furnace (Electron beam furnace) is called for short EB stove, and it is the titanium or titanium alloy smelting equipment of a kind of advanced person.EB furnace apparatus specifically includes that smelting furnace system, draws ingot system, lid cart system, charging system, vacuum system, cooling water system, electron gun system, high voltage power supply.Remaining system equipment is such as: the off-line device such as titanium ingot system of processing, residual titanium material recovery and processing system, raw material processing system.
Equipment is installed has following technical problem:
1, process system is complicated, and automatic controlling level is high.Equipment is U.S.'s introducing equipment, and precision of equipment installation is high.It includes drawing the online equipment such as ingot system, smelting system, vacuum system, charging system, also has partial domestic equipment to include across off-line device such as chassis, product detection device, titanium ingot process equipments.
2, equipment is arranged in-12.000m melt pit, the melt pit of+5.000m and+8.700m absolute altitude layer and each steel structure platform layer.Each layer compact arrangement of equipment, hoisting difficulty is bigger.
3, combination is intersected between equipment, steel construction, vacuum pipe and various energy medium pipeline continuously, association straggly.There is crossed construction closely substantial amounts of, multi-level, need overall coordination to plan.
4, in-12.000m melt pit ,+5.000m and+8.700m high level, interrelated between each layer equipment, measurement and positioning requires height.
5, cooling water system and various energy medium pipeline are many, and cross pipe-line is arranged, needs loose routing to plan.
6, vacuum system is the core installation content of EB stove, and construction quality requires height.
Summary of the invention
The problems referred to above existed for prior art, it is an object of the invention to
Relative to prior art, present invention have the advantage that
1, steel construction, the comprehensive integrated construction of dynamo-electric installation.EB furnace system, as an entirety, overall consideration, weakens professional division, emphasizes overall goal, according to different level, different system etc., optimizes equipment erection sequence, works out Construction Network Planning, unified arrangement steel structure, electromechanical speciality construction.
2, bottom fixed point, the observing and controlling of multilayer wiring.Positioning datum point is invested in ± 0.000m ground, arranges installation reference line at each absolute altitude podium level, solves the problem that multilayer higher device centering benchmark is same.
Line setting is to use theodolite by 2 methods determining a straight line, and equipment datum line is indicated in relevant position.Use a line multipoint system to carry out line setting, multiple fixed point is planar set, solve the benchmark problem of multi-layer device.
3, break through the conventional conventional method successively constructed, by steel construction science is reserved, adjust the pre-assembled order of equipment, optimize to intert and construct, it is ensured that integral construction progress quickly propels.
Accompanying drawing explanation
Fig. 1 is the polishing method that flange is correct.
Fig. 2 is the polishing method of flange mistake.
Detailed description of the invention
In describing the invention, it will be appreciated that, term " length ", " width ", " highly ", " on ", D score, " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include that the first and second features directly contact, it is also possible to include that the first and second features are not directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include that fisrt feature directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " include that fisrt feature directly over second feature and oblique upper, or is merely representative of fisrt feature level height less than second feature.
Electron beam furnace installation engineering method, comprises the steps:
S1: preparation of construction:
At ground floor, on the basis of working chamber, determine longitudinal centre line one, cross central line one, then use theodolite, throw in vertically and horizontally center line at each absolute altitude layer respectively；Especially working chamber and charging system, draw between ingot system, lid cart system should relative position accurate, below ground is provided with pit.
Lay and draw that ingot is little automobile-used draws ingot trolley track, ingot trolley track is drawn to be arranged on melt pit both sides ± 0.000m ground floor, determine the error≤± 1mm drawing ingot trolley track along the longitudinal centerline, draw the vertical equity degree error≤0.5/1000mm of ingot trolley track, along drawing ingot trolley track length direction, article two, the alignment error of interorbital gauge≤± 2mm, the rail level absolute altitude error≤± 1mm of ingot trolley track is drawn on edge, along two the track same cross section rail level difference of height error≤1mm drawing ingot trolley track；
Steel construction is provided with multilayer platform, height overall >=9m, span >=27m；Steel construction is provided with multilayer platform, steel construction height overall >=9m, span >=27m；During the construction of steel column, beam, should be in conjunction with different construction sections, it is considered to electromechanics, be installed coordinating of specialty.
S2: draw ingot system to install:
Drawing ingot system to include drawing ingot dolly and drawing ingot chamber assembly, drawing ingot chamber assembly is integral device, is arranged in La Ding car frame；Ingot system is drawn to be arranged in the melt pit of-12m.
Ingot dolly is drawn to include frame structure, lifting drive and running driver.Lifting drive includes that base supports and driving means.First each parts such as frame structure, lifting drive and the running driver that draw ingot dolly are assembled on ground, after being completed, use traveling crane to be filled to draw on ingot trolley track in place.Then ingot chamber assembly will be drawn by drawing the lifting of ingot dolly to install to driving above support base, ingot dolly will be drawn by bolt and draw ingot chamber assembly to be connected as entirety.Base support installation specification: center line limit deviation≤± 0.5mm, altitude limit deviation≤± 0.15mm, in length and breadth levelness tolerance≤0.1/1000mm.
Draw ingot room installation specification, draw ingot room longitudinal and transverse center line limit deviation≤± 0.5mm, altitude limit deviation≤± 0.15mm, in length and breadth levelness tolerance≤0.1/1000mm；
S3: install working chamber's basic stand column and ground floor steel structure platform from bottom to top；
S4: working chamber installs:
Working chamber includes working chamber's body, working chamber's lid and collection chamber, and working chamber's body includes c-type siege, condensing screen and working chamber；Working chamber's lid is arranged on the top of working chamber's body；
Installation steps: by working chamber's body lifting to basic stand column, it is firm that working chamber's body is welded after completing by adjustment with basic stand column；The technology that working chamber installs requires: working chamber's longitudinal and transverse center line limit deviation≤2mm, altitude limit deviation≤± 0.5mm, fire door horizontal plane difference of height≤2；
C-type siege installation specification: center line limit deviation≤2mm in length and breadth, altitude limit deviation≤± 1mm, transverse horizontal degree tolerance≤0.1/1000mm, centre-to-centre spacing≤-2, both sides～0, base levelness≤0.2/1000.
Condensing screen installation specification: center line limit deviation≤2mm, altitude limit deviation≤± 1mm, levelness tolerance≤0.2/1000mm.
Working chamber's installation specification: center line limit deviation≤2mm, altitude limit deviation≤± 0.5mm, fire door horizontal plane difference of height≤2.
S5: collection chamber is installed and diffusion pump is installed: collection chamber is arranged on the both sides of working chamber's body, and collection chamber is with bolts with working chamber's body；(diffusion pump is arranged on the gases exit line of collection chamber)
Collection chamber and diffusion pump thereof install in place after, working chamber's lid is installed in place, lid dolly needs two layers of steel stage+module to enter after completing to install.
S6: main feeder is installed:
Main feeder is integral device, it is arranged on ground floor steel structure platform, install after working chamber's installation, main feeder installation specification is: longitudinal centre line error≤2mm, cross central line error≤2 mm, two orbit centres are away from deviation≤± 2 mm, rail level absolute altitude error≤± 2 mm, same cross section rail level difference of height≤1 mm；
S7: second layer steel structure platform is installed from bottom to top；
S8: Rotary feeder is installed:
Rotary feeder is positioned at above main feeder, and it is arranged on from bottom to top on second layer steel structure platform, Rotary feeder installation specification is: longitudinal centre line error≤2mm, cross central line error≤2 mm, two orbit centres are away from error≤± 2 mm, rail level absolute altitude error≤± 2 mm, same cross section rail level difference of height≤1 mm；
S9: lid dolly is installed:
Lid dolly includes lid wheeling mechanism and upper platform composition；Lid wheeling mechanism includes frame structure, lifting drive, running driver.Upper brace includes the assembly such as electron gun vacuum system, electron gun power control system.
Lid wheeling mechanism is assembled by first-selection on ground, traveling crane is used to be filled on lid trolley track in place after being completed, then upper brace pre-assembly completed lifts above wheeling mechanism, it is bolted, the lowering or hoisting gear of upper brace and wheeling mechanism is supported base and is connected as entirety, finally mounted working chamber lid and lid dolly upper brace being installed connection to complete, working chamber's lid realizes movement both vertically as well as horizontally by lid dolly；
Lid dolly installation specification: longitudinal centre line error≤2mm, cross central line error≤2mm, two orbit centres are away from error≤± 2mm, rail level absolute altitude error≤± 2mm, same cross section rail level difference of height≤1mm；
S10: vacuum system is installed: vacuum system is that the core of EB stove installs content, and construction quality requires height, involves a wide range of knowledge, the features such as the discrepancy in elevation is big.
Vacuum system realizes vacuum working environment for drawing ingot system, working chamber, main feeder and Rotary feeder；
Vacuum system includes diffusion pump, mechanical pump, lobe pump, maintenance pump and vacuum pipe；
The gas vent drawing ingot system, working chamber, main feeder and Rotary feeder connects vacuum pipe, described diffusion pump, mechanical pump, lobe pump and maintenance pump are arranged on vacuum pipe, erection sequence is that diffusion pump is installed, mechanical pump is installed, lobe pump is installed and maintains pump to install, after installation, the position relationship between four pumps is: near drawing ingot system, working chamber, main feeder or Rotary feeder to be followed successively by diffusion pump to away from the direction drawing ingot system, working chamber, main feeder or Rotary feeder, maintain pump, lobe pump and mechanical pump.
During vacuum system is installed, vacuum pipe solder technology wants summation step as follows:
1) vacuum pipe welding uses gas flame cuttiug processing, should remove the oxide skin of groove face, slag and affect the superficial layer of joint quality, and should be polished flat at uneven place after retaining wall on slope；
2) weldment group to and welding before, should be clean not less than the impurity in the range of 20mm, dirt, deburred by groove and inner surface, and must not have crackle, interlayer；
3), during vacuum pipe butt weld group pair, inwall unfitness of butt joint is less than the 10% of vacuum pipe thickness, and no more than 2mm；
4) can only be from single fillet welded longitudinal direction and circumferential welded seam, its inwall unfitness of butt joint not should be greater than the 25% of wall thickness, and is not to be exceeded 2mm.
Bar type sander " polishing in the same direction " technology is used in sealing ring installation site, it is ensured that flange face is smooth, impulse-free robustness, nothing depression, to reach quality of connection before Flange joint.Use the polishing method that bar type sander " polishing in the same direction " is correct for polishing vestige such as Fig. 1 afterwards.And electric angle grinder can not be used to polish, the polishing method of vestige such as Fig. 2 mistake after electric angle grinder polishing.
The electron beam furnace installation engineering method principle that the present invention provides:
1) serve as theme with furnaceman's EB process system, work out overall network plan, unified arrangement civil engineering, steel construction, mechanical and electric equipment installation order, interspersed construction, comprehensive employing measurement technology, hoisting technology, improve EB stove integral installation quality.
2) bottom fixed point, the observation and control technology of multilayer wiring
3) break through the conventional conventional method successively constructed, by steel construction science is reserved, adjust the pre-assembled order of equipment, optimize to intert and construct, it is ensured that integral construction progress quickly propels.
4) vacuum pipe flange face uses that " " technology, vacuum system pressure testing uses helium to stop leakage in the roof law technology in polishing in the same direction.
5) working chamber uses " alternately clearance gauge mensuration " technology with the adjustment drawing ingot room.
Finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent, without deviating from objective and the scope of technical solution of the present invention, it all should be contained in the middle of scope of the presently claimed invention.
Claims (2)
1. electron beam furnace installation engineering method, it is characterised in that comprise the steps:
S1: preparation of construction:
At ground floor, on the basis of working chamber, determine longitudinal centre line one, cross central line one, throw in vertically and horizontally center line at each absolute altitude layer the most respectively；Below ground is provided with pit；
Lay and draw that ingot is little automobile-used draws ingot trolley track, ingot trolley track is drawn to be arranged on melt pit both sides ± 0.000m ground floor, determine the error≤± 1mm drawing ingot trolley track along the longitudinal centerline, draw the vertical equity degree error≤0.5/1000mm of ingot trolley track, along drawing ingot trolley track length direction, article two, the alignment error of interorbital gauge≤± 2mm, the rail level absolute altitude error≤± 1mm of ingot trolley track is drawn on edge, along two the track same cross section rail level difference of height error≤1mm drawing ingot trolley track；
Steel construction is provided with multilayer platform, height overall >=9m, span >=27m；
S2: draw ingot system to install:
Drawing ingot system to include drawing ingot dolly and drawing ingot chamber assembly, drawing ingot chamber assembly is integral device, is arranged in La Ding car frame；
Ingot dolly is drawn to include frame structure, lifting drive and running driver；Lifting drive includes that base supports and driving means；First each parts such as frame structure, lifting drive and the running driver that draw ingot dolly are assembled on ground, after being completed, use traveling crane to be filled to draw on ingot trolley track in place；Then ingot chamber assembly will be drawn by drawing the lifting of ingot dolly to install to driving above support base, ingot dolly will be drawn by bolt and draw ingot chamber assembly to be connected as entirety；Base support installation specification: center line limit deviation≤± 0.5mm, altitude limit deviation≤± 0.15mm, in length and breadth levelness tolerance≤0.1/1000mm；
Draw ingot room installation specification, draw ingot room longitudinal and transverse center line limit deviation≤± 0.5mm, altitude limit deviation≤± 0.15mm, in length and breadth levelness tolerance≤0.1/1000mm；
S3: install working chamber's basic stand column and ground floor steel structure platform from bottom to top；
S4: working chamber installs:
Working chamber includes working chamber's body, working chamber's lid and collection chamber, and working chamber's lid is arranged on the top of working chamber's body；
Installation steps: by working chamber's body lifting to basic stand column, it is firm that working chamber's body is welded after completing by adjustment with basic stand column；The technology that working chamber installs requires: working chamber's longitudinal and transverse center line limit deviation≤2mm, altitude limit deviation≤± 0.5mm, fire door horizontal plane difference of height≤2；
S5: collection chamber is installed and diffusion pump is installed: collection chamber is arranged on the both sides of working chamber's body, and collection chamber is with bolts with working chamber's body；
S6: main feeder is installed:
Main feeder is integral device, is arranged on ground floor steel structure platform, and main feeder installation specification is: longitudinal centre line error≤2mm, cross central line error≤2 mm, two orbit centres are away from error≤± 2 mm, rail level absolute altitude error≤± 2 mm, same cross section rail level difference of height≤1 mm；
S7: second layer steel structure platform is installed from bottom to top；
S8: Rotary feeder is installed:
Rotary feeder is positioned at above main feeder, and is arranged on from bottom to top on second layer steel structure platform, and Rotary feeder installation specification is: longitudinal centre line error≤2mm, and cross central line error≤2 mm, two orbit centres are away from error
≤ ± 2 mm, rail level absolute altitude error≤± 2 mm, same cross section rail level difference of height≤1 mm；
S9: lid dolly is installed:
Lid dolly includes lid wheeling mechanism and upper platform composition；Lid wheeling mechanism includes frame structure, lifting drive, running driver；Upper brace includes the assembly such as electron gun vacuum system, electron gun power control system；
Lid wheeling mechanism is assembled by first-selection on ground, traveling crane is used to be filled on lid trolley track in place after being completed, then upper brace pre-assembly completed lifts above wheeling mechanism, it is bolted, the lowering or hoisting gear of upper brace and wheeling mechanism is supported base and is connected as entirety, finally mounted working chamber lid and lid dolly upper brace being installed connection to complete, working chamber's lid realizes movement both vertically as well as horizontally by lid dolly；
Lid dolly installation specification: longitudinal centre line error≤2mm, cross central line error≤2mm, two orbit centres are away from error≤± 2mm, rail level absolute altitude error≤± 2mm, same cross section rail level difference of height≤1mm；
S10: vacuum system is installed:
Vacuum system realizes vacuum working environment for drawing ingot system, working chamber, main feeder and Rotary feeder；
Vacuum system includes diffusion pump, mechanical pump, lobe pump, maintenance pump and vacuum pipe；
The gas vent drawing ingot system, working chamber, main feeder and Rotary feeder connects vacuum pipe, described diffusion pump, mechanical pump, lobe pump and maintenance pump are arranged on vacuum pipe, erection sequence is that diffusion pump is installed, mechanical pump is installed, lobe pump is installed and maintains pump to install, after installation, the position relationship between four pumps is: near drawing ingot system, working chamber, main feeder or Rotary feeder to be followed successively by diffusion pump to away from the direction drawing ingot system, working chamber, main feeder or Rotary feeder, maintain pump, lobe pump and mechanical pump.
2. electron beam furnace installation engineering method as claimed in claim 1, it is characterised in that: during described step S10 vacuum system is installed, described vacuum pipe solder technology wants summation step as follows:
1) vacuum pipe welding uses gas flame cuttiug processing, should remove the oxide skin of groove face, slag and affect the superficial layer of joint quality, and should be polished flat at uneven place after retaining wall on slope；
2) weldment group to and welding before, should be clean not less than the impurity in the range of 20mm, dirt, deburred by groove and inner surface, and must not have crackle, interlayer；
3), during vacuum pipe butt weld group pair, inwall unfitness of butt joint is less than the 10% of vacuum pipe thickness, and no more than 2mm；
4) can only be from single fillet welded longitudinal direction and circumferential welded seam, its inwall unfitness of butt joint not should be greater than the 25% of wall thickness, and is not to be exceeded 2mm.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270402A (en) * | 2008-05-06 | 2008-09-24 | 首钢总公司 | Revolving furnace integral parallel move hydraulic pressure fallback construction method |
| CN101397596A (en) * | 2008-09-12 | 2009-04-01 | 北京首钢建设集团有限公司 | Construction method for blast furnace bustle pipe integral installation |
| CN101451168A (en) * | 2008-12-11 | 2009-06-10 | 中冶东北建设有限公司结构制造安装工程公司 | Hot-air stove shell installation method |
| CN101777090A (en) * | 2010-02-22 | 2010-07-14 | 中国二十二冶集团有限公司 | Method for computer simulation of installation construction of oven protection equipment of coke oven |
| CN201858880U (en) * | 2010-09-26 | 2011-06-08 | 北京有色金属研究总院 | Small electron beam melting furnace |
| CN102134855A (en) * | 2010-01-26 | 2011-07-27 | 五冶集团上海有限公司 | Method for installing and constructing supporting wheel set system of coal moisture control dryer |
| CN201962335U (en) * | 2010-12-29 | 2011-09-07 | 北京有色金属研究总院 | Electron beam smelting furnace |
| CN102564123A (en) * | 2010-12-29 | 2012-07-11 | 北京有色金属研究总院 | Electron beam smelting furnace |
| CN103851922A (en) * | 2014-04-07 | 2014-06-11 | 攀枝花云钛实业有限公司 | Method and device for cooling titanium ingot in electron beam (EB) furnace |
-
2015
- 2015-06-08 CN CN201510307949.0A patent/CN104862498B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270402A (en) * | 2008-05-06 | 2008-09-24 | 首钢总公司 | Revolving furnace integral parallel move hydraulic pressure fallback construction method |
| CN101397596A (en) * | 2008-09-12 | 2009-04-01 | 北京首钢建设集团有限公司 | Construction method for blast furnace bustle pipe integral installation |
| CN101451168A (en) * | 2008-12-11 | 2009-06-10 | 中冶东北建设有限公司结构制造安装工程公司 | Hot-air stove shell installation method |
| CN102134855A (en) * | 2010-01-26 | 2011-07-27 | 五冶集团上海有限公司 | Method for installing and constructing supporting wheel set system of coal moisture control dryer |
| CN101777090A (en) * | 2010-02-22 | 2010-07-14 | 中国二十二冶集团有限公司 | Method for computer simulation of installation construction of oven protection equipment of coke oven |
| CN201858880U (en) * | 2010-09-26 | 2011-06-08 | 北京有色金属研究总院 | Small electron beam melting furnace |
| CN201962335U (en) * | 2010-12-29 | 2011-09-07 | 北京有色金属研究总院 | Electron beam smelting furnace |
| CN102564123A (en) * | 2010-12-29 | 2012-07-11 | 北京有色金属研究总院 | Electron beam smelting furnace |
| CN103851922A (en) * | 2014-04-07 | 2014-06-11 | 攀枝花云钛实业有限公司 | Method and device for cooling titanium ingot in electron beam (EB) furnace |
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