CN104772398A - Method for additionally installing stainless steel bush on steel-plastic composite pipe - Google Patents

Method for additionally installing stainless steel bush on steel-plastic composite pipe Download PDF

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Publication number
CN104772398A
CN104772398A CN201510136982.1A CN201510136982A CN104772398A CN 104772398 A CN104772398 A CN 104772398A CN 201510136982 A CN201510136982 A CN 201510136982A CN 104772398 A CN104772398 A CN 104772398A
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CN
China
Prior art keywords
stainless steel
pipe
steel
lining
steel lining
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.)
Pending
Application number
CN201510136982.1A
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Chinese (zh)
Inventor
李清
冯伟权
欧铁柱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heshan Liansu Industrial Development Co Ltd
Original Assignee
Heshan Liansu Industrial Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heshan Liansu Industrial Development Co Ltd filed Critical Heshan Liansu Industrial Development Co Ltd
Priority to CN201510136982.1A priority Critical patent/CN104772398A/en
Publication of CN104772398A publication Critical patent/CN104772398A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08Tube expanders
    • B21D39/20Tube expanders with mandrels, e.g. expandable
    • B21D39/203Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material

Abstract

The invention discloses a method for additionally installing a stainless steel bush on a steel-plastic composite pipe. The method comprises the steps of firstly embedding the stainless steel bush into an end opening of the steel-plastic composite pipe, expanding the stainless steel bush to be tightly fit to the inner wall of the steel-plastic composite pipe by utilizing an expanding tool, and finally machining grooves or outer threads. The expanding tool comprises a manual hydraulic pump and an expander, which are connected with each other by virtue of a hydraulic oil pipe. By adopting the method, the damage of an inner plastic layer of the steel-plastic composite pipe in the machining process of the groove or outer threads can be avoided.

Description

The method that pipe installs stainless steel lining additional moulded by a kind of steel
Technical field
The present invention relates to lining plastic pipe production technical field, particularly relate to a kind of steel and mould the method that pipe installs stainless steel lining additional.
Background technology
Pipe moulded by steel is a kind of emerging multiple tube tubing, can be divided into steel strip reinforced steel-plastics composite pipe, seamless steel pipe strengthens steel-plastics composite pipe, hole pattern steel band steel-plastics composite pipe and steel wire mesh frame steel-plastics composite pipe according to the structure of tubing.At present popular is on the market steel strip reinforced steel-plastics composite pipe, this tubing intermediate layer is that high-carbon steel band docks the steel belt layer be welded by cans, internal layer is high density polyethylene (HDPE), skin is zinc coat, this tubing is not only corrosion-resistant, and load performance is superior, make the purposes of steel-plastics composite pipe widely, each fields such as oil and gas transmission, work pipes for mining, water drinking tube, drainpipe all relate to.
Although pipe superior performance moulded by steel, also there is shortcoming in it, existing lining moulds groove steel-plastics composite pipe and lining moulds external screw thread steel-plastics composite pipe, carries out pressure groove processing or external screw thread adds man-hour at tubing two ends, easily manages in damage plastic cement.After pipeline construction is installed, easily splitting again and get rusty in pipe end place, has a strong impact on the service life of pipeline.Therefore occurred that one embeds a lining to protect inwall plastic layer at multiple tube port at present, and the technology of coated protective effect is risen to pipe end, but lining to be close to tube wall and don't can damage plastic layer after embedding, and there is certain difficulty.
The patent No. be 201320354398.X patent discloses the tubing of a kind of termination with lining, it is referred to the production method of this tubing in the description, first on body, roll extrusion groove processing is carried out, then in the end face coating liquid pressure ring epoxy resins of body, again anti-rust metal lining is embedded body end, utilize specific purpose tool hydraulic collapsible mechanism to carry out swelling to lining, anti-rust metal lining is just close on inboard wall of tube body.The weak point of the method is: it first carries out to body the embedding that roll extrusion groove carries out lining again, large pressure-bearing is shaken high in the process of roll extrusion groove, easily make the plastic wall of internal layer occur breaking, segregation phenomenon, lining is caused to be not easy to embed, moreover, it does not describe the concrete structure of specific purpose tool hydraulic collapsible mechanism in detail, concrete operation is not described yet.
Summary of the invention
In view of this, the object of the invention is to overcome the deficiencies in the prior art, a kind of there is provided steel to mould method that pipe installs stainless steel lining additional, the present invention can prevent from steel from moulding pipe carrying out coming off of inner plastic in groove processing or external screw thread process, what adopt is flexible expanding method, and stainless steel lining can be made evenly to be close to pipe end inwall without the expansion at dead point.
Following scheme is adopted to realize in order to solve the problems of the technologies described above the present invention:
The method that pipe installs stainless steel lining additional moulded by steel, first stainless steel lining cover embedded steel and moulds pipe port, then to be extended to by stainless steel lining and to be close to steel with expanding holding tool and to mould inside pipe wall, finally carries out groove or external screw thread is processed.
Stainless steel lining is arranged with flange; appearance is coated bonding glue embedding steel and is moulded pipe one end; recycling expands holding tool and carries out expansion swelling to stainless steel lining cover; make stainless steel lining cover be close to steel and mould pipe port inwall; carrying out tubing again presses groove processing and external screw thread to add man-hour; protect pipe material inner wall plastic layer from weighing wounded, the lining that after avoiding first processing, fitted lining cover causes embeds difficulty.After tubing construction is laid and installed, serve protective effect to pipe end, prevent sewage to infiltrate between inwall plastic layer and steel pipe inner wall, the problem that solving splits gets rusty, improve pipeline service life.
Described expansion holding tool comprises by the interconnective hydraulic hand-pump of hydraulic oil pipe and expander, described expander comprised oily core rod, was arranged on the oil connection of oily core rod one end, the balloon core of the oily core rod of coated mistake, the expansion sleeve be sleeved on balloon core, be arranged on the oily core rod other end and with expansion sleeve near clamping sleeve and to be sleeved on oily core rod and with expansion sleeve near pipe centring ring.
Oil connection is connected with hydraulic hand-pump by hydraulic oil pipe, pressing hydraulic hand-pump is to expander fuel feeding, hydraulic oil passed through oily core rod by oil connection and injected inner balloon core, balloon core and expansion sleeve realize flexible expansion under the effect of hydraulic oil, when after high-pressure oil pump pressure release, under the effect of expansion sleeve elastic shrinkage, balloon core is pushed back reset.Described clamping sleeve was arranged on oily core rod by screw thread, played and stopped spacing effect, and balloon core, expansion sleeve can not be expanded by axially-extending, and the increase realizing expansion sleeve radial direction is expanded.Described pipe centring ring was sleeved on oily core rod, there is effect equally that stop that balloon core and expansion sleeve axially-extending expand, and described pipe centring ring is provided with flange, when carrying out the operation of expansion dress, flange can play the effect of positioning compression, and clamping sleeve is relative with pipe centring ring compresses expansion sleeve and balloon core.
Be provided with oil-through hole in the oily core rod of described mistake, the oil connection be arranged on oily core rod communicates with oil-through hole.
Cross the main core component that oily core rod is expander, can give balloon core fuel feeding, hydraulic oil is flowed into by oil connection and is swollen by balloon core by oil-through hole, thus realizes swelling of expansion sleeve.
Described oil connection is provided with steel ball spring at its oil transportation arrival end.
When oil connection is connected by hydraulic oil pipe with hydraulic pump, the inside plunger tip of hydraulic oil pipe joint can back down steel ball spring, and the inner oil pocket of expander is connected with hydraulic pump.After taking apart, steel ball spring resets and is closed by oilhole, prevents the hydraulic oil outflow of the inner oil pocket of expander.
Described balloon core is by the quoit of rubber coated.
Balloon core is entirety rubber coated quoit being prepared from by Shooting Technique, after the oilhole crossed through crossing oily core rod injects hydraulic oil, the outer expanded rubber flexibility of balloon core is heaved, thus realize swelling of suit expansion sleeve thereon, the expanding method of this flexibility can make stainless steel lining evenly without dead point, be bubble-freely adjacent to pipe end inwall comprehensively.Described expansion sleeve is polyurethane elastic force cushion rubber, when after high-pressure oil pump pressure release, under the effect of expansion sleeve elastic shrinkage, balloon core is pushed back reset.
The step utilizing expansion holding tool to be expanded by stainless steel lining is as follows:
S1: moulding pipe port by embedding steel after stainless steel sleeve surface coating bonding glue, clapping and putting in place, shedding unnecessary glue;
S2: fill in steel mould expanding the expander of holding tool in pipe port place stainless steel lining, the pipe centring ring three making pipe end face, lining flange and expand holding tool compresses mutually, and keeps concentric parallel;
S3: use hydraulic hand-pump to suppress oiling to expander, observe Pressure gauge indicated pressure, force value reaches, stops suppressing oiling;
S4: enter pressurize process, the dwell time reaches, and opens compression relief cock, expander is retracted and is exited.
The specification will moulding pipe tubing according to steel in S1 chooses stainless steel lining, and the internal diameter that the external diameter of stainless steel lining moulds pipe than steel is slightly less than normal, and namely stainless steel lining just can embed pipe end manually and don't easily drop as the best; According to the pipe material selection force value of different size in S3, when stopping suppressing oil injection operation, now manometric indicated pressure can slightly decline, and belongs to normal equilibrium phenomenon, after pressure drop is stable, carries out a ftercompction; Dwell time in S4 depends on tubing and operation and determines, and namely reaches the effect that lining is not retracted.
Stainless steel lining is enclosed within and embeds before steel moulds pipe port, and pipe port inwall wiped clean moulded by steel, equating port burr.
Can be prevented by port inner wall wiped clean equating burr dirt from causing the stainless steel lining veneer that is locked occur bubble and cause sticking effect to reduce.
Described groove processing carries out processing process before bonding glue does not also have solidification after stainless steel lining expands.
Due in groove processing process, body processing place deformation is larger, therefore process before bonding glue does not also solidify, also the consequence that well bonds can be played after hardening, breaking and coming off of plastic layer can be prevented simultaneously, if processed after adhesive glue water cure, easily there is the coming off of bonding glue, stainless steel lining is separated with plastic layer.
Described external screw thread is processed as and carries out processing process before adhesive glue water cure or after solidification after stainless steel lining expands.
External screw thread processing can be carried out being because external screw thread processing makes body deformation relative to much smaller groove processing after adhesive glue water cure.
Compared with prior art, the present invention has following beneficial effect:
(1) carrying out groove processing or external screw thread adds man-hour, pipe material inner wall plastic layer is from damage;
(2) expanding method used swells for flexible expansion, make stainless steel lining evenly without dead point, be bubble-freely adjacent to pipe end inwall comprehensively.
(3) easy and simple to handle, that effect is close to by stainless steel lining cover is good, serves coated protection, the problem that solving splits gets rusty to pipe end, improves the life-span that pipeline uses.
Accompanying drawing explanation
Fig. 1 is that enforcement schematic diagram installed by stainless steel lining;
Fig. 2 is the enlarged drawing being labeled as B in Fig. 1;
Fig. 3 is the axial sectional view of stainless steel lining;
Fig. 4 is the structural representation of expander;
Fig. 5 is expander component diagram;
Wherein, 1, oily core rod is crossed; 2, expansion sleeve; 3, oil connection; 4, clamping sleeve; 5, pipe centring ring; 6, balloon core; 7, depression bar; 8, compression relief cock; 9, stainless steel lining; 10, plastic cement internal layer; 11, zinc-plated steel layer; 12, tack coat; 13, oil pressure gauge; 14, hydraulic oil pipe; 15, hydraulic hand-pump.
Detailed description of the invention
In order to allow those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1,2 and 3, the method that pipe installs stainless steel lining additional moulded by a kind of steel, and step is as follows:
(1) steel is moulded pipe port inwall wiped clean, equating port burr, by stainless steel lining 9 surface coating bonding glue, stainless steel lining 9 to be filled in pipe end and clap and put in place, shed surplus glue;
(2) filling in expanding the expander of holding tool in the stainless steel lining 9 at pipe end place, making pipe end face, the pipe centring ring 5 of stainless steel lining 9 flange and expander mutually compresses, and keep concentric parallel;
(3) tighten compression relief cock 8, use depression bar 7 to carry out suppressing oil injection operation, observe oil pressure gauge 13 pressure, when force value reaches, stop suppressing oil injection operation;
(4) enter pressurize process, the dwell time reaches, and opens compression relief cock 8, and expander is retracted and exited;
(5) before bonding glue does not also solidify, groove processing process is carried out.
As shown in Figures 4 and 5, described expansion holding tool comprises by the interconnective hydraulic hand-pump 15 of hydraulic oil pipe 14 and expander, described expander comprised oily core rod 1, was arranged on the oil connection 3 of oily core rod one end, the balloon core 6 of the oily core rod of coated mistake 1, the expansion sleeve 2 be sleeved on balloon core 6, be arranged on oily core rod 1 other end and with expansion sleeve 2 near clamping sleeve 4 and to be sleeved on oily core rod 1 and with expansion sleeve 2 near pipe centring ring 5.
As shown in Figure 2, use after expanding holding tool expansion dress, stainless steel lining 9 is close together by tack coat 12 and plastic cement internal layer 10 and zinc-plated steel layer 11, and described tack coat 12 is the structure after adhesive glue water cure.
Above-described embodiment is only wherein specific implementation of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.

Claims (9)

1. the method that pipe installs stainless steel lining additional moulded by steel, it is characterized in that, first stainless steel lining cover embedded steel and moulds pipe port, then to be extended to by stainless steel lining and to be close to steel with expanding holding tool and to mould inside pipe wall, finally carries out groove or external screw thread is processed.
2. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 1, it is characterized in that, described expansion holding tool comprises by the interconnective hydraulic hand-pump of hydraulic oil pipe and expander, described expander comprised oily core rod, was arranged on the oil connection of oily core rod one end, the balloon core of the oily core rod of coated mistake, the expansion sleeve be sleeved on balloon core, be arranged on the oily core rod other end and with expansion sleeve near clamping sleeve and to be sleeved on oily core rod and with expansion sleeve near pipe centring ring.
3. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 2, it is characterized in that, is provided with oil-through hole in the oily core rod of described mistake, and the oil connection be arranged on oily core rod communicates with oil-through hole.
4. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 2, it is characterized in that, described oil connection is provided with steel ball spring at its oil transportation arrival end.
5. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 2, it is characterized in that, described balloon core is by the quoit of rubber coated.
6. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 2, it is characterized in that, the step utilizing expansion holding tool to be expanded by stainless steel lining is as follows:
S1: moulding pipe port by embedding steel after stainless steel sleeve surface coating bonding glue, clapping and putting in place, shedding unnecessary glue;
S2: fill in steel mould expanding the expander of holding tool in pipe port place stainless steel lining, the pipe centring ring three making pipe end face, lining flange and expand holding tool compresses mutually, and keeps concentric parallel;
S3: use hydraulic hand-pump to suppress oiling to expander, observe Pressure gauge indicated pressure, force value reaches, stops suppressing oiling;
S4: enter pressurize process, the dwell time reaches, and opens compression relief cock, expander is retracted and is exited.
7. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 6, it is characterized in that, stainless steel lining is enclosed within and embeds before steel moulds pipe port, and pipe port inwall wiped clean moulded by steel, equating port burr.
8. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 1, it is characterized in that, described groove processing carries out processing process before bonding glue does not also have solidification after stainless steel lining expands.
9. the method that pipe installs stainless steel lining additional moulded by a kind of steel according to claim 1, it is characterized in that, described external screw thread is processed as and carries out processing process before adhesive glue water cure or after solidification after stainless steel lining expands.
CN201510136982.1A 2015-03-27 2015-03-27 Method for additionally installing stainless steel bush on steel-plastic composite pipe Pending CN104772398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510136982.1A CN104772398A (en) 2015-03-27 2015-03-27 Method for additionally installing stainless steel bush on steel-plastic composite pipe

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Application Number Priority Date Filing Date Title
CN201510136982.1A CN104772398A (en) 2015-03-27 2015-03-27 Method for additionally installing stainless steel bush on steel-plastic composite pipe

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014112A (en) * 2015-07-29 2015-11-04 重庆市上泽机电有限公司 Outer circle turning clamp for thin-walled parts for motor
CN105127315A (en) * 2015-09-14 2015-12-09 天津二十冶建设有限公司 Pipe expanding device and pipe expanding method thereof
CN107186098A (en) * 2017-06-01 2017-09-22 天津友发钢管集团股份有限公司 A kind of plastics lined pipe pipe end expanding machine

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CN203686413U (en) * 2013-12-16 2014-07-02 鹤山联塑实业发展有限公司 Quick connecting structure of double-flat-wall steel-plastic composite pipes
CN204127531U (en) * 2014-08-15 2015-01-28 鹤山联塑实业发展有限公司 A kind of safeguard structure for steel-plastic composite pipe

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US3287947A (en) * 1964-01-03 1966-11-29 Charles E Frantz Explosion apparatus for flanging a tube
US4724693A (en) * 1985-12-20 1988-02-16 Combustion Engineering, Inc. Tube expansion tool
CN201428892Y (en) * 2008-07-22 2010-03-24 蔡海华 Mouthpiece bushing for steel plastic composite pipe and pipeline comprising same and steel plastic composite pipe
CN101947603A (en) * 2010-09-27 2011-01-19 浙江金洲管道科技股份有限公司 Elastic internal expansion tube expander
CN203336144U (en) * 2013-06-19 2013-12-11 广东华捷钢管实业有限公司 Pipe with ends provided with bushings
CN203686413U (en) * 2013-12-16 2014-07-02 鹤山联塑实业发展有限公司 Quick connecting structure of double-flat-wall steel-plastic composite pipes
CN204127531U (en) * 2014-08-15 2015-01-28 鹤山联塑实业发展有限公司 A kind of safeguard structure for steel-plastic composite pipe

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014112A (en) * 2015-07-29 2015-11-04 重庆市上泽机电有限公司 Outer circle turning clamp for thin-walled parts for motor
CN105127315A (en) * 2015-09-14 2015-12-09 天津二十冶建设有限公司 Pipe expanding device and pipe expanding method thereof
CN107186098A (en) * 2017-06-01 2017-09-22 天津友发钢管集团股份有限公司 A kind of plastics lined pipe pipe end expanding machine

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Application publication date: 20150715

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