CN101915499A - Method for mounting PTA (Pure Terephthalic Acid) refining dryer - Google Patents
Method for mounting PTA (Pure Terephthalic Acid) refining dryer Download PDFInfo
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- CN101915499A CN101915499A CN2010102395958A CN201010239595A CN101915499A CN 101915499 A CN101915499 A CN 101915499A CN 2010102395958 A CN2010102395958 A CN 2010102395958A CN 201010239595 A CN201010239595 A CN 201010239595A CN 101915499 A CN101915499 A CN 101915499A
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Abstract
The invention provides a method for mounting a PTA (Pure Terephthalic Acid) refining dryer which comprises a barrel. The barrel has 2/100 of gradient and comprises a feeding end and a discharging end. The method comprises the following steps of: determining the center line position of the barrel on a mounting fundamental plane; mounting and adjusting a riding wheel set according to the center line position; mounting a dryer body on the riding wheel set; mounting a catch wheel; mounting a gear ring; mounting a speed reducer, a motor and a pinion; mounting a feeding end seal; mounting a discharging end seal; and mounting a screw feeder and a discharge box, wherein the riding wheel set comprises a riding wheel set at a fixed end and a riding wheel set at a free end; and each riding wheel set is provided with two riding wheels.. By using the axis of the barrel of the dryer as an alignment reference, the detection and measurement references are determined according to the positional relationship among the barrel and the riding wheels and among the riding wheels and the base, the mounting operation is simplified, the quality control standard is established, and the mounting precision is increased.
Description
Technical field
The present invention relates to a kind of drying machine method, relate in particular to a kind of installation method with refining drying machine of PTA of gradient.
Background technology
The refining drying machine of PTA is a kind of large-scale indirect heating type drying equipment, is one of key equipment in the PTA process units, and its effect is to remove a large amount of wet branch of containing in the PTA material.Safe, stable, the long period of its installation quality direct relation auto levelizer, oepration at full load.
The refining drying machine of PTA is steam-tube rotatory dryer, and the heat exchanger tube that multi-turn runs through whole cylindrical shell has been installed in equipment barrel, is provided with high performance hermetically-sealed construction in barrel front end (feed end) and tail end (discharge end).Material enters after the drying machine, and along with the rotation of equipment barrel is moved to discharge end, material is by the heat exchanger tube drying in this process, and dried material is discharged by the drying machine discharge end.The main feature of equipment is that treating capacity is big, and operating flexibility is big, good seal performance, and the reliability height can be realized continued operation.
The refining drying machine production load of PTA is big, and drying machine to the discharge end step-down that tilts, is installed levelness and axis centering precision prescribed height from feed end.Install under the drying machine cold conditions that thermal expansion is offset when will consider hot operation.Drying machine is to be supported on 4 support rollers of two pedestals in two ends, and the axis symmetry of support roller and the depth of parallelism require high, brings great difficulty for adjustment and centering, the levelling of drying machine.
Summary of the invention
The objective of the invention is to: provide a kind of accurate, the refining drying machine installation method of easy PTA.
In order to reach above purpose, the present invention realizes by following technical scheme is provided:
The installation method of the refining drying machine of a kind of PTA, the refining drying machine of described PTA comprises cylindrical shell, cylindrical shell is installed design 2/100 gradient, and cylindrical shell comprises feed end and discharge end, and installation method may further comprise the steps: the position of center line of determining cylindrical shell on the base surface is being installed; Install and adjustment support roller group according to position of center line, described support roller group comprises stiff end support roller group and free end support roller group, and each support roller group is provided with two support rollers; The drying machine fuselage is installed on the support roller group; Gear wheel is installed; Gear ring is installed; Reductor and motor are installed, pinion; The sealing of installation feed end; The sealing of installation discharge end; Screw feeder and feed box are installed.
Further, described step according to position of center line installation and adjustment support roller group comprises following set-up procedure: verification base surface height, lay the parallels of stiff end support roller group and free end support roller group; Adjust the spacing of stiff end support roller group and free end support roller group, make it to be the spacing of drying machine two rolling rings and the thermal expansion length sum of drying machine; Adjust the depth of parallelism of each support roller; Adjust the absolute altitude and the gradient of each support roller; Install and fix described stiff end support roller group and free end support roller group.
Further, the depth of parallelism of described each support roller of adjustment may further comprise the steps: adjust the lateral attitude of stiff end support roller group and free end support roller group, make on the support roller group base the sample dotting punch in line; Adjust the support roller on stiff end support roller group and the free end support roller group, make two support rollers on each support roller group symmetrical and parallel with respect to the cylindrical shell center line; Use total powerstation to check the axial location of each support roller, wheel distance between axles, the support roller diagonal distance is verified the depth of parallelism of every group of support roller and the symmetric case of relative cylindrical shell center line, then adjusts support roller with jackscrew as if nonconforming.
Further, the absolute altitude and the gradient of described each support roller of adjustment may further comprise the steps: use the absolute altitude of the datum plate on total station survey stiff end support roller group and the free end support roller group base, it is the gradient of designing requirement that the taper liner iron between adjustment base and the base surface makes the gradient between stiff end support roller group and the free end support roller group; Make gradient and the identical slope gage of gradient is installed, be placed on the datum plate of support roller base, frame level is placed on the slope gage, check the vertical and horizontal levelness of base with cylindrical shell; The parallels of adjusting the base below meets the requirements the transverse horizontal degree and the vertical equity degree of the base of stiff end support roller group and free end support roller group.
Further, the drying machine fuselage is installed in the step on the support roller group, the preceding rolling ring center line of drying machine aligns with the center line of the support roller of stiff end support roller group, and the center line of the support roller of the center line of the back rolling ring of drying machine and free end support roller group does not line up, and two centre-to-centre spacing are the cylindrical shell thermal expansion amount.
Further, described installation reductor and motor, the step of pinion comprises: motor base is installed; Adjust the gradient of motor base; Motor and speed reducer is installed on motor base; Pinion is installed on the output shaft of reductor; Adjust the position of motor base, the flank of tooth of pinion and gear ring is parallel to each other to reserve backlash.
Further, further comprising the steps of: that swivel joint is installed.
The installation method of the refining drying machine of described PTA is further comprising the steps of: protective cover is installed.
Further, also comprise the step that oil supply system is installed.
Further, be flexible coupling in the installation of the junction of the refining drying machine of PTA and other external equipments.
Beneficial effect of the present invention is mainly reflected in: by with the axis of drying machine cylindrical shell as the centering benchmark, position relation according to cylindrical shell and support roller, support roller and pedestal has been determined the check measurement benchmark, simplify fitting operation, and established quality control standard, increased installation accuracy.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the method flow diagram of specific embodiments of the invention.
Fig. 2 is the stiff end support roller group front view of specific embodiments of the invention.
Fig. 3 is the free end support roller group front view of specific embodiments of the invention.
Fig. 4 is the slope gage and the frame level schematic diagram of specific embodiments of the invention.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | | Implication | |
| 1 | |
9 | |
|
| 3 | |
11 | |
|
| 5 | Stiff end |
13 | |
|
| 7 | Free end support roller group |
The specific embodiment
Following with reference to the description of drawings specific embodiments of the invention.
The refining drying machine specifications parameter of the PTA of specific embodiments of the invention is as follows:
Drying machine diameter: 2880mm
Drying machine length: 25600mm
Drying machine rotating speed: 4.45rpm
The operation gradient of dryer design: 2/100
The installation procedure of the refining drying machine of PTA of the present invention below is described in detail with reference to this flow chart as shown in Figure 1.
Before construction, the examination and the line of base surface need be installed, base surface should shovel weaker zone and shovel out pitted skin, and the pit degree of depth has 3～5 pits to be advisable in 100mm * 100mm area greater than 10mm.Base surface must not have greasy dirt.Check base center line position size and foundation outline size according to construction drawing, base center line position allowable error 20mm, foundation outline permissible variation in dimension ± 20mm.
Before formal the installation, at first make with extra care unpacking, check and cleaning of drying machine for PTA.Carrying out the support roller group then installs.
As Fig. 3 and Fig. 4, drying machine support roller group comprises stiff end support roller group 5 and free end support roller group 7, every group has a public base and two support rollers 3, each has welded 4 block plates above the public base, this 4 block plate and the surface of position that support roller 3 is installed be through Precision Machining, on the whole on same plane and the gradient be 2/100, can be used as the levelling benchmark face, be installed on support roller 3 on the base during the equipment arrival and adjust, drying machine center line, support roller center line groove and sample punch mark are arranged on the base.
The step that the support roller group is installed is as follows:
At first, according to the absolute altitude and the basic reinspection situation of equipment, the center line of the cylindrical shell 1 of the drying machine of drawing during with reference to unwrapping wire and horizontal line datum line are determined the thickness that each parallels group needs, and then suitable height is put, tentatively is adjusted to each parallels group.
It is in place to lift two support roller groups then, notices that the gradient direction of support roller is not mistaken.
Carry out the adjustment of two support roller group spacings then: the spacing of drying machine two rolling rings is 18000mm, expanded by heating under the duty, thermal expansion length is 28.5mm, so support roller 3 centre-to-centre spacing of two support roller groups should be 18000+28.5=18028.5mm, for ease of measuring, choose support roller 3 inner side ends and measure, support roller 3 width are 400mm, so support roller 3 inboard spacings in two ends are 18028.5-400=17628.5mm.Support roller 3 spacing permissible variation≤1.5mm.
Carry out the adjustment of the support roller depth of parallelism then:
Adjust the lateral attitude of two support roller group bases according to the center line on base center line and the support roller group base, make on the base everywhere the sample dotting punch in line, use total powerstation to check.This straight line is no more than ± 1mm the position deviation of drying machine center line on the basis.Adjust, check two support rollers 3 of every group of support roller, make it relatively dry arbor line symmetry and parallel.Utilize shown in the groove (or mark) on the two ends support roller 3 and measure, check support roller 3 two end axles spacings, if support roller 3 two end axles interval error≤0.1mm are promptly parallel.If there is not groove (or mark) on the support roller 3, the support roller axis is not easy to again measure, then utilize the cylindrical Up Highway UHW to measure inspection, with machined surface on the base is benchmark, finds out 2 points with angle square on support roller 3 two end faces cylindricals, marks a bus, measure the vertical range of this bus two-end-point straight line to the base, each support roller 3 is measured 2 points, if error≤0.1mm is promptly parallel.If deviation exceeds allowed band, then adjust the position of support roller 3 by jackscrew.In the practical operation, can't read the 0.1mm precision,, surpass 0.1mm, then adjust as the gap in the gap of fuselage back in place by continuing four support roller 3 both sides of measurement and rolling ring with lead extrusion method or clearance gauge with the ruler measurement.Use total powerstation to check the axial location of each support roller 3, wheel distance between axles, support roller diagonal distance, verify the depth of parallelism of every group of support roller and the symmetric case of relatively dry arbor line,, adjust support roller with jackscrew if undesirable.
Carry out the adjustment of two ends support roller absolute altitude and gradient then, comprising:
Use the absolute altitude of the datum plate on two support roller groups of total station survey base, can be fixed the relative altitude of end support roller group 5 bases and free end support roller group 7 bases, guarantee the gradient of two support roller groups according to the difference in height of each point.Accurately adjust by the taper liner iron between base and basis.
Pedestal the datum plate face on put scale, utilize total powerstation to measure the absolute altitude of 8 fast datum plates.Adjust, verify by following formula.
As Fig. 4, make two 2/100 slope gage 9 with steel plate, two slope gages 9 are placed on the datum plate on the support roller base.Frame level 13 is placed on vertical, the horizontal line levelness of checking base on the slope gage 9,, adjusts the parallels of support roller group floor below if the levelness deviation is undesirable.
Parallels is respectively organized in continuous adjustment makes horizontal, the vertical equity degree of base reach design and code requirement.
At last, after the position of base, absolute altitude, levelness are all adjusted to designing requirement, all parallels groups are padded, fastening each foundation bolt gets up each layer parallels spot welding of each group at last.
After the installation of support roller group, the stack shell 1 of drying machine is installed:
According to appearance and size, weight and the on-the-spot place situation of drying machine, select the 400T crawler crane that drying machine stack shell 1 is lifted on the support roller 3.The center line of rolling ring is alignd with the center line of the support roller of the stiff end support roller group 5 of band gear wheel base one side.Owing to exist thermal expansion to reserve side-play amount, the center line that free end support roller group 7 supports support roller 3 and back rolling ring does not line up.Support roller supports and has bearing, so care should be used to is operated, slowly fallen when stack shell 1 is lifted on support roller.
Gear wheel is installed the back gear ring is installed.
Gear ring is mounted on the welding ring of barrel outer surface, with the articulation bolt location, installs with set bolt.Gear ring is made up of 3 lobes, uses the crane lifting assembling.During adjustment, articulation bolt is installed in six fraisings, use the every other hole of bolting then.After tightening all bolts, unload wherein five articulation bolts.If do not unload this five articulation bolts, after drying machine heated up so, articulation bolt may rupture because of thermal expansion.
Gear ring is installed the back pinion, reductor and motor is installed.
Pinion is directly installed on the output shaft of gear reduction unit, and reductor, fluid coupling and motor are installed on the common bed, is adjusted before dispatching from the factory.Together adjust together with common bed during installation, making the flank of tooth of pinion and gear ring, parallel to each other (on the position of about 3.5mm～4.5mm), the field of conjugate action must not be less than 60% of the facewidth to reserve suitable backlash.After the depth of parallelism of pinion and gear ring, gap meet the requirements, the foundation bolt of fastening common bed.
Connecting with fluid coupling between motor and the reductor, is non-rigid attachment, and has been mounted before dispatching from the factory and adjusts, and need not to take apart the position that fluid coupling is readjusted motor again.
After pinion, reductor and the motor mounting, carry out the contact point inspection at transmission position
Jiggering is checked the surperficial contact point situation of support roller and rolling ring, rolling ring and gear wheel, checks contact gap with clearance gauge, adjusts the position of support roller with jackscrew if same support roller two side clearances are inhomogeneous.When adjusting support roller, need especially to note the center line of drying machine fuselage and four support rollers is offset.
Jiggering is checked the joggle(d) joint contact of gear ring and pinion.Use the checking with lead back lash, if undesirable then adjust the position of reduction box.
Then, carry out feed end sealing installation and discharge end sealing installation.
After feed end sealing installation and discharge end sealing are installed, carry out the installation of screw feeder.
After screw feeder is installed, be rotated joint and install.
Swivel joint carries out the installation of protective cover after installing.Each protective cover such as gear protective cover, rolling ring protective cover and chainguard is all installed, put in place fastening bolt with crane lifting.
Be the installation of oil supply system then.
At last, all should add in the junction of drying machine and miscellaneous equipment or pipeline and to be flexible coupling, as metal hose or bellows, in order to avoid these equipment and adapter or other extra load act on the drying machine.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (10)
1. the installation method of the refining drying machine of a PTA, the refining drying machine of described PTA comprises cylindrical shell, cylindrical shell is installed design 2/100 gradient, it is characterized in that installation method may further comprise the steps:
The position of center line of determining cylindrical shell on the base surface is being installed;
Install and adjustment support roller group according to position of center line, described support roller group comprises stiff end support roller group and free end support roller group, and each support roller group is provided with two support rollers;
The drying machine fuselage is installed on the support roller group;
Gear wheel is installed;
Gear ring is installed;
Reductor and motor are installed, pinion;
The sealing of installation feed end;
The sealing of installation discharge end;
Screw feeder is installed.
2. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, described step according to position of center line installation and adjustment support roller group further comprises following set-up procedure:
Verification base surface height is laid the parallels of stiff end support roller group and free end support roller group;
Adjust the spacing of stiff end support roller group and free end support roller group, make it to be the spacing of drying machine two rolling rings and the thermal expansion length sum of drying machine;
Adjust the depth of parallelism of each support roller;
Adjust the absolute altitude and the gradient of each support roller;
Install and fix described stiff end support roller group and free end support roller group.
3. the installation method of the refining drying machine of PTA according to claim 2 is characterized in that the depth of parallelism of described each support roller of adjustment further may further comprise the steps:
Adjust the lateral attitude of stiff end support roller group and free end support roller group, make on the support roller group base the sample dotting punch in line;
Adjust the support roller on stiff end support roller group and the free end support roller group, make two support rollers on each support roller group symmetrical and parallel with respect to the cylindrical shell center line;
Use total powerstation to check the axial location of each support roller, wheel distance between axles, the support roller diagonal distance is verified the depth of parallelism of every group of support roller and the symmetric case of relative cylindrical shell center line, then adjusts support roller with jackscrew as if nonconforming.
4. the installation method of the refining drying machine of PTA according to claim 2 is characterized in that the absolute altitude and the gradient of described each support roller of adjustment further may further comprise the steps:
Use the absolute altitude of the datum plate on total station survey stiff end support roller group and the free end support roller group base, it is the gradient of designing requirement that the taper liner iron between adjustment base and the base surface makes the gradient between stiff end support roller group and the free end support roller group;
Make gradient and the identical slope gage of gradient is installed, be placed on the datum plate of support roller base, frame level is placed on the slope gage, check the vertical and horizontal levelness of base with cylindrical shell;
The parallels of adjusting the base below meets the requirements the transverse horizontal degree and the vertical equity degree of the base of stiff end support roller group and free end support roller group.
5. the installation method of the refining drying machine of PTA according to claim 1, it is characterized in that, the drying machine fuselage is installed in the step on the support roller group, the preceding rolling ring center line of drying machine aligns with the center line of the support roller of stiff end support roller group, the center line of the support roller of the center line of the back rolling ring of drying machine and free end support roller group does not line up, and two centre-to-centre spacing are the cylindrical shell thermal expansion amount.
6. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, described installation reductor and motor, and the step of pinion further comprises:
Motor base is installed;
Adjust the gradient of motor base;
Motor and speed reducer is installed on motor base;
Pinion is installed on the output shaft of reductor;
Adjust the position of motor base, the flank of tooth of pinion and gear ring is parallel to each other to reserve backlash.
7. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, and is further comprising the steps of: swivel joint is installed.
8. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, and is further comprising the steps of: protective cover is installed.
9. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, and is further comprising the steps of: oil supply system is installed.
10. the installation method of the refining drying machine of PTA according to claim 1 is characterized in that, installs in the junction of the refining drying machine of PTA and other external equipments to be flexible coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102395958A CN101915499A (en) | 2010-07-29 | 2010-07-29 | Method for mounting PTA (Pure Terephthalic Acid) refining dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102395958A CN101915499A (en) | 2010-07-29 | 2010-07-29 | Method for mounting PTA (Pure Terephthalic Acid) refining dryer |
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| CN101915499A true CN101915499A (en) | 2010-12-15 |
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| CN2010102395958A Pending CN101915499A (en) | 2010-07-29 | 2010-07-29 | Method for mounting PTA (Pure Terephthalic Acid) refining dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832755A (en) * | 2014-02-12 | 2015-08-12 | 五冶集团上海有限公司 | Mounting method of horizontal tank and heat exchanger of benzene hydrogenation project |
| CN110779342A (en) * | 2019-10-26 | 2020-02-11 | 上海二十冶建设有限公司 | Installation method of heavy-duty rotary cylinder cooler |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201014901Y (en) * | 2006-11-20 | 2008-01-30 | 山东天力干燥设备有限公司 | Purified terephthalic acid steam rotating dryer |
-
2010
- 2010-07-29 CN CN2010102395958A patent/CN101915499A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201014901Y (en) * | 2006-11-20 | 2008-01-30 | 山东天力干燥设备有限公司 | Purified terephthalic acid steam rotating dryer |
Non-Patent Citations (8)
| Title |
|---|
| 《docin.com豆丁网》 20090105 陈助冬等 回转窑筒体安装施工工法 , 2 * |
| 《docin.com豆丁网》 20100222 苏州中材建设有限公司第八项目经理部 回转窑施工技术方案 , 2 * |
| 《化工回转窑设计规定》 19941128 化工部工程建设标准编辑中心 传动装置 , 1 * |
| 《山西冶金》 20031231 崔世谦 回转窑的测量及调整 , 2 * |
| 《现代商贸工业》 20090731 王维峰 水泥旋转窑设备安装及调试分析 , 2 * |
| 《科技中国人》 19991231 缑康锁 Ф4.5*110m回转窑安装工法 , 2 * |
| 《科技信息》 20100630 李志强等 4500t/d水泥回转窑施工方案 , 2 * |
| 《科技情报开发与经济》 20031031 赵泽民等 碳素生产系统回转窑安装方案 , 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832755A (en) * | 2014-02-12 | 2015-08-12 | 五冶集团上海有限公司 | Mounting method of horizontal tank and heat exchanger of benzene hydrogenation project |
| CN110779342A (en) * | 2019-10-26 | 2020-02-11 | 上海二十冶建设有限公司 | Installation method of heavy-duty rotary cylinder cooler |
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Application publication date: 20101215 |