CN105458325A - Method for drilling holes in pipe plate by means of fixing of multiple radial drills - Google Patents
Method for drilling holes in pipe plate by means of fixing of multiple radial drills Download PDFInfo
- Publication number
- CN105458325A CN105458325A CN201510846519.6A CN201510846519A CN105458325A CN 105458325 A CN105458325 A CN 105458325A CN 201510846519 A CN201510846519 A CN 201510846519A CN 105458325 A CN105458325 A CN 105458325A
- Authority
- CN
- China
- Prior art keywords
- tube sheet
- pipe plate
- tool
- pipe
- radial drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
- B23B39/161—Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
Abstract
The invention discloses a method for drilling holes in a pipe plate by means of fixing of multiple radial drills. A plurality of tool square boxes are arranged in an area of a compacted foundation ground, the upper planes of the tool square boxes are corrected through an infrared theodolite, the pipe plate is arranged above the tool square boxes, and recalibration is carried out according to the planeness required by a pipe plate part drawing. The multiple bolt holes connected with a formwork and a connecting plate tool are drilled in the pipe plate, and then the formwork and the connecting plate tool are assembled to be closely and attached to the pipe plate into a whole. In addition, the radial drills are demounted from an original mounting base and mounted on the connecting plate tool of the pipe plate, and cooling lubricating systems of various drilling machines are transformed. The transformed radial drills are fixed above the pipe plate in a partitioning manner, the mounting precision of the drilling machines is corrected, and heat exchange pipe holes are drilled according to the positions, with the machined bottoms holes, of the drilling formwork in a partitioning manner. A common machine tool is adopted for machining large pipe plate pipe holes on site, efficiency is high, cost is low, quality is good, and high adaptability is achieved.
Description
Technical field
The invention belongs to Machining Technology field, relate to and utilize multiple stage radial drill to be fixed on the method that tube sheet is holed.
Background technology
The boring prior art of tube sheet mainly contains two kinds: one utilizes separate unit radial drill to hole after marking on slab; Another kind utilizes numerical control drilling directly to hole.
The boring of tube sheet generally adopts in factory and manufactures, mainly contain two kinds of methods, a kind of is be placed on the large platform of line by the tube sheet that car is good, platform pincers worker is drawn the pore position line by figure and is charged and attacked dotting punch with sample and draw planning detection circle line, afterwards tube sheet is fixed in the work top of radial drill, utilize separate unit radial drill by dotting punch position boring one by one, this kind of method efficiency is lower, and cost is lower; Another kind places on numerical control drilling work top by tube sheet good for car, and after numerical control driller presses the programming of position, drawing hole, numerical control drilling is directly holed.This kind of method efficiency is higher, and cost is higher.
The maximum specification of radial drill boring is generally 100mm, and the boring maximum outreach of its rocking arm is generally 3150mm, and need multiple clamping centering workpiece for the large-scale tube sheet of brill, time-consuming, efficiency are low, and quality is unstable; And numerical control drilling drilling efficiency is high, but numerical control drilling processing charges is higher, it is domestic also less that large-sized numerical control bores the higher numerical control drilling especially can processing more than 5000mm part of expense, namely allows to processing owing to affecting by cost of transportation and road overload etc., also more difficult realization.
In recent years, along with petrochemical plant maximizes, tubular heat exchanger is impelled also to be tending towards maximizing, also more at more than 5000mm of tube sheet specification, and most equipment also needs erecting bed to construct owing to limitting by traffic condition, and the present invention is exactly the difficult problem in order to solve the boring of large-scale tube sheet site operation, solve separate unit radial drill drilling efficiency low, ropy problem, also solves and is drilled to this costly with large-sized numerical control, transport limited problem.
Summary of the invention
The object of the invention is to propose a kind of multiple stage radial drill that utilizes and be fixed on the method that tube sheet is holed, solve the problem with machine tool machining large tube sheet efficiency is low, of poor quality, cost is high.This kind of method is applicable to the pore that on site operation machining large tube sheet, precision is higher, and the example of such as holing on the tube sheet of 90mm at diameter 5000mm, thickness is authenticated, and effect is better.
The technical solution adopted in the present invention is, a kind of multiple stage radial drill that utilizes is fixed on the method that tube sheet is holed, and carries out according to following steps:
Step 1, the foundation ground of site operation to be tamped, polylith frock square chest is arranged in the foundation ground region of compacting, with infrared ray theodolite, correction is carried out to plane on frock square chest and ensure that flatness is within 2mm;
Step 2, tube sheet is placed on frock square chest, instrument and infrared ray theodolite is utilized again to carry out correcting plane degree (this should be consistent with self planarity requirements after the tube sheet Vehicle Processing of drawing requirement, is exemplified as 1mm here) within 1mm to plane on tube sheet;
Step 3, for the not high pore of bridge required precision, on tube sheet, can directly rule and beat the method for dotting punch by hand, carry out the determination of pore position; The method that bore template should be adopted to hole for the pore (as adopted the tube head of argonaut welding welding) that bridge required precision is higher is holed, be fixed on tube sheet by template C type dop, should accomplish and fit closely with tube sheet face, the ability that template can be bored by miniature numerical control is made into sectional pattern plate, in advance the machined bottom of pore is got out, thus ensure the positional precision of final boring;
The tube sheet of step 4, directly line boring, using magnetic force is drilled in the bolt hole that tube sheet gets out fixing multiple stage radial drill connecting plate frock, and the tube sheet utilizing bore template to hole is except the hole got out in connecting plate frock, also should get out the bolt hole that multiple guarantee template and tube sheet fit tightly, the position of wherein holing should overlap with the position of pore, bolt hole size should be less than pore size, and final corresponding bolt fixes bore template and connecting plate frock;
Step 5, radial drill to be transformed, assemble with the connecting tooling be fixed on tube sheet after original mounting seat is removed by radial drill, and the cooling and lubricating system of lathe is carried out appropriate reconstruction with applicable site operation;
Step 6, by multiple stage transform radial drill subregion be fixed on tube sheet, correct the installation accuracy of drilling machine, heat exchange pore is got out by the bottom outlet position subregion processed on dotting punch position or bore template, reach drawing requirement, the pore that the radial drill connecting plate that is fixed covers, retighten until radial drill and once get out afterwards, whole drilling environment temperature lower than 5 DEG C, should should not ensure that lathe can lubricate and work.
The invention has the beneficial effects as follows and adopt machine tool on-the-spot machining large tube sheet pore, its efficiency is higher, and cost is lower, and quality is better, and applicability is stronger.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of construction method of the present invention;
Fig. 2 is system for use in carrying structure schematic top plan view of the present invention;
Fig. 3 is the radial drill connection diagram of present system.
In figure, 1. tube sheet, 2. frock square chest, 3. infrared ray theodolite, 4. template, 5. connecting plate, 6. radial drill, 7. liquid circulation water system, 601. bolts, 602. pedestals.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
Be the system of the inventive method employing as depicted in figs. 1 and 2, tube sheet 1 is placed on some frock square chests 2, the height of frock square chest 2 is adjusted to consistent level height by the infrared ray theodolite 3 being arranged on tube sheet 1 other, template 4 is fixed on tube sheet 1, fit tight and with several bolts and tube sheet tightly integral with tube sheet 1 surface, template 4 is fixed with 4 (the several connecting plate of several radial drill) connecting plates 5, connecting plate 5 is fixed with radial drill 6, the rocker arm drilling scope of all radial drills 6 is added up and should be covered the boring scope of whole tube sheet 1, four radial drills 6 are provided with in this illustration 1, be distributed on tube sheet 1 surrounding, template 4 gets out in advance the machined bottom of heat exchange pore, heat exchanger tube hole machined is carried out with radial drill 6 pairs of tube sheets 1, liquid circulation water system 7 is provided with on tube sheet 1 side, for during drilling, system is cooled.
Be illustrated in figure 3 the connection diagram of radial drill 6.By bolt 601, the pedestal 602 of radial drill 6, connecting plate 5 and tube sheet and template are linked together.
At two large-sized calandria type heat exchangers of From Shandong Rizhao enterprise site operation at the beginning of 2014, tube sheet diameter 5640mm, thickness 90mm, pore 24928, aperture
bridge spacing 96% allows bridge > 5.64mm, 4% allows minimum bridge>=3.48mm, condition of construction was (bore template being) of the machining of drilling realized with 4 Z50 radial drills according to the step 1 in technical solution of the present invention ~ 6 at the installation scene of this enterprise in boring at that time, check after boring that aperture size is all qualified, bridge spacing 98% bridge > 5.7mm, the minimum bridge>=4.2mm of 2%.Meet completely and be better than drawing requirement.Every block drilling of tubesheet is saved time more than 1 month compared with separate unit radial drill, saves external coordination digital control processing expense more than 70,000 yuan.
The present invention is holed by 4 radial drills fixing on tube sheet simultaneously, and utilize template to make benchmark bottom outlet, with the deformation in infrared ray theodolite monitoring tube sheet face in drilling process, the inventive method is practical and easily realize, and achieves the object of on-the-spot processing pore high-efficiency high-quality.Also created a kind of new method of on-the-spot machining large tube sheet simultaneously.
The above is only to the present invention's preferably embodiment, not any pro forma restriction is done to the present invention, every any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (1)
1. utilize multiple stage radial drill to be fixed on the method that tube sheet is holed, it is characterized in that, carry out according to following steps:
Step 1, the foundation ground of site operation to be tamped, polylith frock square chest is arranged in the foundation ground region of compacting, with infrared ray theodolite, correction is carried out to plane on frock square chest and ensure that flatness is within 2mm;
Step 2, tube sheet to be placed on frock square chest, to utilize instrument and infrared ray theodolite again to carry out correcting plane degree to plane on tube sheet and control within 1mm, and fix with parallels;
Step 3, bore template C type dop is fixed on tube sheet, should accomplishes to fit with tube sheet face closely, central alignment;
Step 4, to get out on tube sheet with magnetic drill and multiplely fit tightly with tube sheet the bolt hole be connected with guarantee template, and get out the bolt hole of fixing multiple stage radial drill connecting plate frock, reach the object of fixing bore template and connecting plate frock with the bolt of correspondence;
Step 5, radial drill to be transformed, assemble with the connecting tooling be fixed on tube sheet after original mounting seat is removed by radial drill, and the cooling and lubricating system of lathe is carried out appropriate reconstruction with applicable site operation;
Step 6, by multiple stage transform radial drill subregion be fixed on tube sheet, corrected the installation accuracy of drilling machine, got out heat exchange pore by the machined bottom position subregion on bore template, reach or be better than the borehole accuracy of drawing requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846519.6A CN105458325B (en) | 2015-11-27 | 2015-11-27 | It is a kind of that the method to drill on tube sheet is fixed on using more radial drills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846519.6A CN105458325B (en) | 2015-11-27 | 2015-11-27 | It is a kind of that the method to drill on tube sheet is fixed on using more radial drills |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105458325A true CN105458325A (en) | 2016-04-06 |
| CN105458325B CN105458325B (en) | 2018-04-24 |
Family
ID=55596727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510846519.6A Expired - Fee Related CN105458325B (en) | 2015-11-27 | 2015-11-27 | It is a kind of that the method to drill on tube sheet is fixed on using more radial drills |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105458325B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772784A (en) * | 2016-05-18 | 2016-07-20 | 中车唐山机车车辆有限公司 | Drilling system for workpiece |
| CN110548889A (en) * | 2019-07-30 | 2019-12-10 | 高邮市永发机械有限公司 | Stable and efficient magnetic drill press of driling |
| CN111069919A (en) * | 2019-12-31 | 2020-04-28 | 哈电集团（秦皇岛）重型装备有限公司 | High-temperature gas cooled reactor tube plate weld thread machining equipment and machining process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030194284A1 (en) * | 2002-04-16 | 2003-10-16 | Christopher Sieradzki | Boring riser holes in a graphite mold |
| CN2892336Y (en) * | 2006-05-22 | 2007-04-25 | 梁锦星 | Full automatic dual-end multibit drill lathe |
| CN202137410U (en) * | 2011-06-29 | 2012-02-08 | 天津赛瑞机器设备有限公司 | Drilling tool for end face of externally-arranged water ring guide vane hole of hydroturbine generator set |
| CN104259767A (en) * | 2014-08-20 | 2015-01-07 | 云南大为化工装备制造有限公司 | Machining method of group of holes in large-sized metal tube plate |
| CN104959640A (en) * | 2015-05-29 | 2015-10-07 | 刘海明 | Precise hole forming drilling machine |
-
2015
- 2015-11-27 CN CN201510846519.6A patent/CN105458325B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030194284A1 (en) * | 2002-04-16 | 2003-10-16 | Christopher Sieradzki | Boring riser holes in a graphite mold |
| CN2892336Y (en) * | 2006-05-22 | 2007-04-25 | 梁锦星 | Full automatic dual-end multibit drill lathe |
| CN202137410U (en) * | 2011-06-29 | 2012-02-08 | 天津赛瑞机器设备有限公司 | Drilling tool for end face of externally-arranged water ring guide vane hole of hydroturbine generator set |
| CN104259767A (en) * | 2014-08-20 | 2015-01-07 | 云南大为化工装备制造有限公司 | Machining method of group of holes in large-sized metal tube plate |
| CN104959640A (en) * | 2015-05-29 | 2015-10-07 | 刘海明 | Precise hole forming drilling machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772784A (en) * | 2016-05-18 | 2016-07-20 | 中车唐山机车车辆有限公司 | Drilling system for workpiece |
| CN110548889A (en) * | 2019-07-30 | 2019-12-10 | 高邮市永发机械有限公司 | Stable and efficient magnetic drill press of driling |
| CN111069919A (en) * | 2019-12-31 | 2020-04-28 | 哈电集团（秦皇岛）重型装备有限公司 | High-temperature gas cooled reactor tube plate weld thread machining equipment and machining process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105458325B (en) | 2018-04-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180315 Address after: 132000 Zunyi East Road, Longtan District, Jilin, Jilin Province, No. 9 Applicant after: Jilin global and creation machinery manufacturing Cleaning Co., Ltd. Address before: No. 9, Zunyi Road, Longtan District, Jilin, Jilin Applicant before: JILIN MACHINERY MANUFACTURING BRANCH, CNPC NORTHEAST REFINING & CHEMICAL ENGINEERING CO., LTD. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180321 Address after: 132000 Zunyi East Road, Longtan District, Jilin, Jilin Province, No. 9 Applicant after: Jilin global and creation machinery manufacturing Cleaning Co., Ltd. Address before: 132000 Zunyi East Road, Longtan District, Jilin, Jilin Province, No. 9 Applicant before: JILIN MACHINERY MANUFACTURING BRANCH, CNPC NORTHEAST REFINING & CHEMICAL ENGINEERING CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180424 Termination date: 20181127 |