CN1415888A - Channel elbow with wearable liner and lining method thereof - Google Patents
Channel elbow with wearable liner and lining method thereof Download PDFInfo
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- CN1415888A CN1415888A CN 02138410 CN02138410A CN1415888A CN 1415888 A CN1415888 A CN 1415888A CN 02138410 CN02138410 CN 02138410 CN 02138410 A CN02138410 A CN 02138410A CN 1415888 A CN1415888 A CN 1415888A
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Abstract
This invention relates to a wear-resistant liner pipeline elbow and forming method which can prolong it life time characterizing in thickening inside of pipeline elbow bow part of wear-resistant liner to turn thinner and thinner steadily towards the two sides and fixing noncircle axial combined core and enabling to increase the bow part inside gap steadily in the bend inside hole to form liner layer in gaps of unequal width faces between inside of liner elbow and the core mode formed by filling or pressing especially by urethane rubber to pour the liner to increase the wear resistance of the easiest worn out part of the elbow.
Description
Technical field Jiang Long good fortune Tan Xi is flat
The present invention relates to a kind ofly can significantly improve channel bend the wear resistance lining channel bend and the forming method in working life.
Background technique
Carry as higher abrasion-proof pipes of solid content such as coal ash of power plant, coal slurry, mill tailings, the blowdowns of flue gas Wet-type desulfurize and dust removing, its elbow is subjected to the fluid impact arc position (elbow outer arc inboard) of wearing and tearing, because of the break-in of conveyance fluid high-speed motion to this position scouring force maximum, the wearing and tearing of impacting property, especially carry when containing the solid-phase material fluid, this kind wearing and tearing are severe especially, thereby the arc position of elbow is more easy to wear than straight pipe wall, usually be 1/5 of straight-tube portion working life only, influences the working life of whole pipe.Chinese patent 93247971 and 00235090 disclosed pipeline wear-resistant bend are that the elbow arch portion is made indent buffering ball curved surface, and making fluid enter the ball curved surface can rounding off, reduce fluid to the washing away of the arc inwall of elbow with this, improve elbow working life.Chinese patent 98124292 disclosed flush-resistant elbows with the whole perisporium thickening of elbow curved part, improve wearability with this during then by manufacturing.Chinese patent 00215169 disclosed abrasion-proof bent tube, then bend pipe in the smaller metal of elbow internal fixation one similar shape, and one deck antifriction alloy cast layer of between two bend pipes, casting, after interior bend pipe wearing and tearing, this antifriction alloy pouring layer just becomes wearing course.Yet all raising elbows of above-mentioned proposition are subjected to the anti abrasive technical measures of arch portion of fluid impact wearing and tearing, all still have its some shortcomings, are not that wear resistance is not good enough, and cost is higher, make cumbersomely exactly, and therefore still having some treats improvements.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of improved manufacturing simple, cost is low, and wear resistance is good, and economical and practical wear resistance lining channel bend makes it to reach and straight tube equal working life.
Another object of the present invention is to provide a kind of lining method of above-mentioned wear resistance lining channel bend.
The present invention's first purpose realizes, the main improvement is the backing layer thickening that elbow is subject to the arc position (elbow outer arc inboard) of impact wear, form the not backing layer of uniform thickness of side face, by thickening the backing layer at this position, with this wearability that improves this position, prolong the working life of whole elbow.Specifically, wear resistance lining channel bend of the present invention comprises metal bends and wear-resisting lining nexine, it is characterized in that said wear-resisting lining nexine in the inboard thickening of elbow arch portion, forms the not backing layer of uniform thickness of side face.The said backing layer of the present invention, according to usage requirement, it can be the material of macromolecular materials such as plastics, urethane rubber, wear resistant resin or other suitable linings, lining thickening part and straight length are attenuate gradually, smooth transition, and the elbow endoporus that forms behind the lining can be circular, also can be oval, but, preferably adopt the moulding by casting lining material, for example pouring polyurethane rubber for to make things convenient for the lining moulding and to guarantee the abrasion resistance that it is higher.The inboard lining of arch portion of the present invention can be used for as various channel bends such as 90 °, 45 °, 30 °.
The present invention's second purpose realizes, be the backing layer that obtains thickening gradually in channel bend arch portion inboard, be to make external mold with the lining elbow, be fixed with in the elbow endoporus and can make side clearance increases gradually in the arch portion non-circular shaft to composite core formwork, the side face that forms between by lining elbow interior wall and core by perfusion or pressure injection mode is the backing layer of uniform thickness not.Backing layer of the present invention especially adopts pouring polyurethane rubber as wear resistance lining, and particularly EU make the lining elbow not only have stronger abrasion resistance, and the lining manufacturing is also easy.Described cast can be normal pressure cast, vacuum pouring, rotary casting etc.
The present invention is owing to thicken the wear resistance lining of elbow arch portion inboard, improved the wearability at this position relatively, prolonged the elbow whole service life, made it to reach and conveyance conduit equal working life, and do not influence normal use and with being connected of other pipelines.Perfusion or pressure injection mode lining mode are adopted in the local thickening of backing layer, and construction is simple, and the one piece lining can obtain the thickening layer of smooth transition.Especially adopt pouring polyurethane rubber to make backing layer, not only abrasion resistance is good than other backing layers, and be 3-4 times of ultra-high molecular weight polyethylene wear-resisting working life, is 8-10 times of fluoroplastic; And easy construction, the labor productivity height.Wear-resistant bend of the present invention is specially adapted to power plant, mine, building material industry and carries the slip that contains solid-phase material, as coal ash of power plant, coal slurry, and mill tailings, flue gas Wet-type desulfurize and dust removing blowdown etc.
Below in conjunction with an indefiniteness embodiment, further specify the present invention and lining method.
Description of drawings
Fig. 1 is an embodiment of the invention elbow bend lining structure schematic representation.
Fig. 2 is Figure 1A-A sectional structure schematic representation.
Embodiment
Embodiment 1: referring to accompanying drawing, to be made external mold by lining pipeline elbow bend 5, at inner chamber brushing Kai Muluoke (trade mark CF218) Bond, being fixed with semicircle in the endoporus combines (or oval) appearance and is coated with the lining core 7 that is brushed with releasing agent such as silane releasing agent with semiellipse, core 7 is axially by two section 7.1 and 7.2 involutory compositions, by positioning boss 8 location (also can locate by other orientation types).The elbow both ends of the surface have capping 1.1,1.2 respectively, are located by connecting by bolt 3 and core 7, and sealing role, the one, form the backing layer baffle plate; The 2nd, for the core location forms location, lining gap, and the core demoulding is offered help.Capping 1 periphery has the ring cowling limit, location 10 of stretching out, and constitutes the location with the elbow flange.Cover rim has demoulding hollow slots 12, from hollow slots it is separated with piping flange during the demoulding, can mold damage.Be respectively equipped with relief opening 4.1 in two cappings and 4.2, one end tube walls are provided with perfusing hole 2.There is eccentric side face not wide thereby form core and elbow interior wall, with the lining mold of straight length smooth transition.
Respectively polyether-type PTMG casting type polyurethane performed polymer is heated to 100 ℃; MOCA chain extender (3,3 '-two chloro-4,4 '-diaminodiphenylmethane) is heated to 120 ℃ and is made its fusion; The lining elbow module is heated to about 100 ℃.Base polyurethane prepolymer for use as after will heating then and chain extender (consumption is pressed in the base polyurethane prepolymer for use as NCO% free acid cyanogen ammonia content and calculated and determine, has no special requirements) mix, the band temperature inject by the sprue gate and full heating backsight in mould cavity.Cast finishes and is with mould to heat 100 ℃ through 1-2 hour sulfidization molding, after the cooling and demolding, through about 80 ℃, vulcanized 20-30 hour again, obtain having the urethane rubber backing layer 6 of arch portion 5.1 inboard thickenings, and this thickening layer 6.1 is equal to or greater than elbow half cycle face, and from the middle part to both sides gradually attenuate seamlessly transit.
The present invention can also select different casting type polyurethane and corresponding curing agent, or add suitable catalyzer according to usage requirement, and in room temperature vulcanization; Or employing injection moulding lining wear-resistant plastic layer etc.; Or, shortening heating, cooling cycle for saving heating energy source, core adopts hollow structure; The hollow ring cowling is adopted in capping; These are the unsubstantiality equivalent transformation with respect to the present invention, all belong to protection domain of the present invention.
30 °, 45 ° elbow lining methods are the same.
Claims (10)
1, a kind of wear resistance lining channel bend comprises metal bends and wear-resisting lining nexine, it is characterized in that said wear-resisting lining nexine in the inboard thickening of elbow arch portion, forms the not backing layer of uniform thickness of side face.
2,, it is characterized in that said wear-resisting lining nexine is a urethane rubber according to the described wear resistance lining channel bend of claim 1.
3,, it is characterized in that said arch portion thickening backing layer is to both sides attenuate gradually, smooth transition according to claim 1 or 2 described wear resistance lining channel bends.
4,, it is characterized in that said thickening backing layer is more than or equal to elbow half cycle face according to claim 1 or 2 described wear resistance lining channel bends.
5,, it is characterized in that said urethane rubber is the cast EU according to the described wear resistance lining channel bend of claim 2.
6,, it is characterized in that said cast EU is a PTMG polyurethane according to the described wear resistance lining channel bend of claim 5.
7, the described wear resistance lining channel bend of a kind of claim as described above lining method, it is characterized in that making external mold with the lining elbow, in the elbow endoporus, be fixed with and make side clearance increases gradually in the arch portion non-circular shaft, between by lining elbow interior wall and core, form the not backing layer of uniform thickness of side face by perfusion or pressure injection mode to composite core formwork.
8,, it is characterized in that said elbow interior wall is coated with to be brushed with Bond that the core appearance is coated with and is brushed with releasing agent according to the described wear resistance lining channel bend of claim 7 lining method.
9,, it is characterized in that there are exhaust port and inlet in said mould backing layer position according to the described wear resistance lining channel bend of claim 7 lining method.
10,, it is characterized in that said lining core is axially by forming more than two sections according to the described wear resistance lining channel bend of claim 7 lining method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138410 CN1415888A (en) | 2002-10-04 | 2002-10-04 | Channel elbow with wearable liner and lining method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138410 CN1415888A (en) | 2002-10-04 | 2002-10-04 | Channel elbow with wearable liner and lining method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1415888A true CN1415888A (en) | 2003-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138410 Pending CN1415888A (en) | 2002-10-04 | 2002-10-04 | Channel elbow with wearable liner and lining method thereof |
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| CN (1) | CN1415888A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072225A (en) * | 2012-11-08 | 2013-05-01 | 广西梧州五一塑料制品有限公司 | Draining pipe elbow die |
| CN101896759B (en) * | 2007-11-27 | 2013-08-21 | 乌尔可公司 | Pipe coating |
| CN103522472A (en) * | 2013-09-30 | 2014-01-22 | 山东科技大学 | Inner liner polyurethane spherical elbow forming mold |
| CN104441594A (en) * | 2014-09-04 | 2015-03-25 | 张进德 | Molding and protecting mode of inner rubber of irregular rubber tube |
| CN105179877A (en) * | 2015-10-13 | 2015-12-23 | 苏州上春仪监测程控设备制造有限公司 | Pipeline with silicon carbide lining and forming technique of pipeline |
| CN106195524A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of grinding machine preparation method of the feed bend pipe of replaceable abrasion-proof lining body |
| CN105307764B (en) * | 2013-06-18 | 2017-03-08 | 住友金属矿山株式会社 | Lined piping construct |
| CN106523830A (en) * | 2016-10-24 | 2017-03-22 | 扬州市勘测设计研究院有限公司 | Right-angled elbow provided with flow guiding rib plates |
| CN107881502A (en) * | 2017-11-30 | 2018-04-06 | 武汉理工大学 | A kind of production method of wear-resistant bend for pipeline |
| CN108709042A (en) * | 2018-08-01 | 2018-10-26 | 山东柯林瑞尔管道工程有限公司 | One kind giving flanged fitting Lining device |
| EP2874791B1 (en) | 2012-07-20 | 2018-12-19 | MAG Aerospace Industries, LLC | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| CN112595122A (en) * | 2020-12-25 | 2021-04-02 | 中化二建集团有限公司 | Casting construction method for flexible air pipeline lining |
| CN112709879A (en) * | 2021-01-11 | 2021-04-27 | 山东宏丰海洋石油装备有限公司 | High-pressure movable elbow with thickened outer wall |
| WO2022090837A1 (en) * | 2020-10-30 | 2022-05-05 | Tyco Fire Products Lp | Fire protection system pipe fittings |
| CN114811242A (en) * | 2022-06-30 | 2022-07-29 | 山西申沪物资贸易有限公司 | Corrosion-resistant non-metal lining pipeline joint and manufacturing method thereof |
-
2002
- 2002-10-04 CN CN 02138410 patent/CN1415888A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896759B (en) * | 2007-11-27 | 2013-08-21 | 乌尔可公司 | Pipe coating |
| EP2874791B2 (en) † | 2012-07-20 | 2022-08-17 | MAG Aerospace Industries, LLC | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| EP2874791B1 (en) | 2012-07-20 | 2018-12-19 | MAG Aerospace Industries, LLC | Composite waste and water transport elements and methods of manufacture for use on aircraft |
| CN103072225A (en) * | 2012-11-08 | 2013-05-01 | 广西梧州五一塑料制品有限公司 | Draining pipe elbow die |
| CN103072225B (en) * | 2012-11-08 | 2015-08-12 | 广西梧州五一塑料制品有限公司 | Drain pipe elbow mould |
| CN105307764B (en) * | 2013-06-18 | 2017-03-08 | 住友金属矿山株式会社 | Lined piping construct |
| CN103522472A (en) * | 2013-09-30 | 2014-01-22 | 山东科技大学 | Inner liner polyurethane spherical elbow forming mold |
| CN103522472B (en) * | 2013-09-30 | 2015-12-09 | 山东科技大学 | Inner liner polyurethane spherical elbow mould |
| CN104441594A (en) * | 2014-09-04 | 2015-03-25 | 张进德 | Molding and protecting mode of inner rubber of irregular rubber tube |
| CN105179877A (en) * | 2015-10-13 | 2015-12-23 | 苏州上春仪监测程控设备制造有限公司 | Pipeline with silicon carbide lining and forming technique of pipeline |
| CN106195524B (en) * | 2016-07-14 | 2017-12-22 | 洛阳诚创耐磨材料有限公司 | A kind of preparation method of the grinding machine feed bend pipe of replaceable abrasion-proof lining body |
| CN106195524A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of grinding machine preparation method of the feed bend pipe of replaceable abrasion-proof lining body |
| CN106523830A (en) * | 2016-10-24 | 2017-03-22 | 扬州市勘测设计研究院有限公司 | Right-angled elbow provided with flow guiding rib plates |
| CN106523830B (en) * | 2016-10-24 | 2019-09-06 | 扬州市勘测设计研究院有限公司 | A kind of 90 ° of bend pipes of band water conservancy diversion gusset |
| CN107881502A (en) * | 2017-11-30 | 2018-04-06 | 武汉理工大学 | A kind of production method of wear-resistant bend for pipeline |
| CN107881502B (en) * | 2017-11-30 | 2020-05-05 | 武汉理工大学 | Production method of wear-resistant elbow for pipeline |
| CN108709042A (en) * | 2018-08-01 | 2018-10-26 | 山东柯林瑞尔管道工程有限公司 | One kind giving flanged fitting Lining device |
| WO2022090837A1 (en) * | 2020-10-30 | 2022-05-05 | Tyco Fire Products Lp | Fire protection system pipe fittings |
| CN112595122A (en) * | 2020-12-25 | 2021-04-02 | 中化二建集团有限公司 | Casting construction method for flexible air pipeline lining |
| CN112709879A (en) * | 2021-01-11 | 2021-04-27 | 山东宏丰海洋石油装备有限公司 | High-pressure movable elbow with thickened outer wall |
| CN114811242A (en) * | 2022-06-30 | 2022-07-29 | 山西申沪物资贸易有限公司 | Corrosion-resistant non-metal lining pipeline joint and manufacturing method thereof |
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| C06 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |