CN112350238A - MPP power tube and preparation process thereof - Google Patents
MPP power tube and preparation process thereof Download PDFInfo
- Publication number
- CN112350238A CN112350238A CN202010995437.9A CN202010995437A CN112350238A CN 112350238 A CN112350238 A CN 112350238A CN 202010995437 A CN202010995437 A CN 202010995437A CN 112350238 A CN112350238 A CN 112350238A
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- CN
- China
- Prior art keywords
- bar
- tube
- pipe
- outer tube
- cutting
- 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
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims description 27
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses an MPP (maximum power point) power tube, which comprises an outer tube and an inner tube, wherein the inner wall of the outer tube is provided with bars distributed in an annular array, the end surfaces of the bars are arc-shaped and are positioned in the same circle center, the outer tube is positioned between the bars and is provided with the inner tube, the bars, the inner tube and the outer tube are equal in length, the bars and the two ends of the inner tube are arranged in parallel and level, one end of each bar protrudes out of the outer tube, one side surface close to the outer tube is provided with a thread groove, the side wall of one end of the outer tube, far away from the thread groove, is; according to the MPP power pipe, the thread groove on the bar is correspondingly connected with the thread hole on the outer pipe through the bolt, so that the adjacent MPP power pipes are quickly connected, the operation is convenient, the connection efficiency is high, the laying efficiency is improved, in addition, the mode that the inner pipe is sleeved with the outer pipe is adopted, the power can be effectively protected from being eroded by accumulated water, the cable is protected, the service life of the cable is prolonged, the cable maintenance workload is reduced, the safety accident is avoided, the preparation process is simple, and the preparation is convenient.
Description
Technical Field
The invention relates to the technical field of power tubes, in particular to an MPP power tube and a preparation process thereof.
Background
The MPP power pipe is called MPP power cable protection pipe and is divided into an excavation type and a non-excavation type, and the MPP non-excavation type power pipe is called MPP jacking pipe or dragging pipe. The MPP power pipe adopts the modified polypropylene as the main raw material, and is a construction project for laying pipelines, cables and the like in special sections such as roads, railways, buildings, riverbeds and the like without digging a large amount of mud, digging soil and damaging road surfaces. Compared with the traditional 'trenching and pipe burying method', the trenchless power pipe engineering is more suitable for the current environmental protection requirement, and the disturbing factors such as dust flying, traffic jam and the like caused by the traditional construction are eliminated, so that the technology can also lay pipelines in some areas which can not implement the trenching operation, such as historic site protection areas, downtown areas, crop and farmland protection areas, expressways, rivers and the like.
When current MPP power protection pipe was laid, adjacent MPP power protection pipe connection all adopted external connection spare to connect, and the operation is more loaded down with trivial details, lays inefficiency, and the power pipe lay with the below ground, in the broken back of tubular product, intake easily, cause the cable to be corroded by ponding, reduced the life of cable, increased the cable and maintained work load, still take place the incident easily.
Disclosure of Invention
The MPP power pipe and the preparation process have the advantages that the thread grooves on the bar rods are correspondingly connected with the thread holes on the outer pipe through the bolts, the adjacent MPP power pipes can be quickly connected, the operation is convenient, the connection efficiency is high, the laying efficiency is improved, the inner pipe is sleeved with the outer pipe, the power can be effectively protected from being corroded by accumulated water, the cable is protected, the service life of the cable is prolonged, the maintenance workload of the cable is reduced, safety accidents are avoided, the preparation process is simple, the preparation is convenient, and the existing problems in the background art can be effectively solved.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a MPP electric power pipe, includes outer tube and inner tube, the inner wall of outer tube is equipped with the bar that the annular array distributes, the terminal surface of bar is the arc and is located same centre of a circle, the outer tube is located and is equipped with the inner tube between the bar, inner tube and outer tube are isometric, bar and inner tube both ends parallel and level set up, the one end protrusion outer tube of bar and the side that is close to the outer tube are equipped with the thread groove, the one end lateral wall that the thread groove was kept away from to the outer tube is equipped with the screw hole corresponding with the thread groove.
Preferably, a limiting groove is formed in the side face of one end of the bar, and a limiting lug corresponding to the limiting groove is arranged at the other end of the bar.
Preferably, a strip groove is formed in one side face, close to the inner pipe, of the strip rod, and a protruding strip corresponding to the strip groove is arranged on the outer side wall of the inner pipe.
Preferably, the side wall of the inner pipe at the bottommost part is provided with through holes arranged at equal intervals.
Preferably, the bar is integrally provided with the outer tube.
A preparation process of an MPP power tube comprises the following steps:
preparing master batches of an outer pipe and an inner pipe;
step two, respectively putting the master batch prepared in the step one into different bins for drying and preheating;
step three, putting the preheated outer tube master batch into an extruder to integrally extrude the outer tube and the bar;
step four, putting the preheated inner tube master batch into an extruder for extrusion;
step five, putting the outer pipe and the inner pipe prepared in the step three and the step four into cooling water for cooling and carrying out isometric cutting;
step six, processing the cut outer tube and the cut bar in the step five;
and step seven, aligning the inner pipe with the two ends of the bar, and then welding and fixing to obtain a final product.
Preferably, the grooves of the bars in the third step are formed by extrusion, and the convex strips of the inner pipe in the fourth step are formed by extrusion.
Preferably, in the fifth step, the cutting step of the outer tube is as follows:
1) cutting the outer pipe in advance to be equal in length;
2) cutting the outer wall of one end of the outer pipe to the position of the bar by adopting hot cutting, cutting the side surface of the bar by adopting an arc-shaped cutter, removing the cut outer pipe and enabling the bar to protrude out of the outer pipe;
3) and (3) carrying out end face cutting on the bar by adopting hot cutting, cutting the side face of the bar by adopting an arc-shaped cutter, and removing the cut bar.
Preferably, the processing in the sixth step includes positioning and punching the outer tube and the bar to form a threaded hole and a threaded groove, and processing the side surfaces of the two ends of the bar to form a limiting groove and a limiting lug.
Compared with the prior art, the invention has the following beneficial effects: according to the MPP power tube, the thread groove on the bar is correspondingly connected with the thread hole on the outer tube through the bolt, so that the adjacent MPP power tubes can be quickly connected, the operation is convenient, the connection efficiency is high, the laying efficiency is improved, in addition, the mode that the inner tube is sleeved with the outer tube is adopted, the power can be effectively protected from being eroded by accumulated water, the cable is protected, the service life of the cable is prolonged, the cable maintenance workload is reduced, the safety accident is avoided, the preparation process is simple, and the preparation is convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional perspective view of an outer tube of the present invention;
FIG. 3 is a perspective view of the inner tube of the present invention;
fig. 4 is a schematic diagram of the connection of adjacent power pipes according to the present invention.
In the figure: 1. an outer tube; 2. an inner tube; 3. a bar; 4. a thread groove; 5. a threaded hole; 6. a limiting groove; 7. a limiting bump; 8. a strip groove; 9. a convex strip; 10. a through hole; 11. and (4) bolts.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1-3, an MPP electric power pipe, including outer tube 1 and inner tube 2, the inner wall of outer tube 1 is equipped with the bar 3 that the annular array distributes, the terminal surface of bar 3 is the arc and is located same centre of a circle, outer tube 1 is located and is equipped with inner tube 2 between the bar 3, inner tube 2 and outer tube 1 are isometric, bar 3 sets up with 2 both ends parallel and level in inner tube, the one end protrusion outer tube 1 of bar 3 and the side that is close to outer tube 1 are equipped with thread groove 4, the one end lateral wall that thread groove 4 was kept away from to outer tube 1 is equipped with the screw hole 5 corresponding with thread groove 4.
In this embodiment, a side surface of one end of the bar 3 is provided with a limiting groove 6, and the other end of the bar 3 is provided with a limiting projection 7 corresponding to the limiting groove 6.
In this embodiment, a side surface of the bar 3 close to the inner tube 2 is provided with a bar groove 8, and the outer side wall of the inner tube 2 is provided with a convex strip 9 corresponding to the bar groove 8.
In this embodiment, the sidewall of the inner tube 2 at the bottom is provided with through holes 10 arranged at equal intervals.
In this embodiment, the bar 3 is integrally provided with the outer tube 1.
As shown in fig. 4, adjacent MPP power pipes are connected, and spacing groove 6 corresponds the joint with spacing lug 7 for thread groove 4 and screw hole 5 adopt bolt 11 to fix on same axis, realize the high-speed joint of two power pipes, improve the efficiency of mating formation of power pipe.
Example 2
A preparation process of an MPP power tube comprises the following steps:
preparing master batches of an outer pipe and an inner pipe;
step two, respectively putting the master batch prepared in the step one into different bins for drying and preheating;
and step three, putting the preheated outer tube master batch into an extruder to integrally extrude the outer tube and the bar, wherein the bar groove of the bar is formed when the bar is extruded, and the convex strip of the inner tube is formed when the inner tube is extruded.
Step four, putting the preheated inner tube master batch into an extruder for extrusion;
step five, putting the outer pipe and the inner pipe prepared in the step three and the step four into cooling water for cooling and carrying out isometric cutting, wherein the cutting step of the outer pipe is as follows:
1) cutting the outer pipe in advance to be equal in length;
2) cutting the outer wall of one end of the outer pipe to the position of the bar by adopting hot cutting, cutting the side surface of the bar by adopting an arc-shaped cutter, removing the cut outer pipe and enabling the bar to protrude out of the outer pipe;
3) carrying out end face cutting on the bar by adopting hot cutting, cutting the side face of the bar by adopting an arc-shaped cutter, and removing the cut bar;
sixthly, positioning and punching the cut outer pipe and the cut bar in the fifth step to form a threaded hole and a threaded groove, and processing the side surfaces of two ends of the bar to form a limiting groove and a limiting lug;
and step seven, aligning the inner pipe with the two ends of the bar, and then welding and fixing to obtain a final product.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (9)
1. The utility model provides a MPP electric power pipe, includes outer tube and inner tube, its characterized in that: the inner wall of outer tube is equipped with the bar that the annular array distributes, the terminal surface of bar is the arc and is located same centre of a circle, the outer tube is located and is equipped with the inner tube between the bar, inner tube and outer tube are isometric, bar and inner tube both ends parallel and level set up, the one end protrusion outer tube of bar and the side that is close to the outer tube are equipped with the thread groove, the one end lateral wall that the thread groove was kept away from to the outer tube is equipped with the screw hole corresponding with the thread groove.
2. The MPP power tube of claim 1, wherein: the side face of one end of the bar is provided with a limiting groove, and the other end of the bar is provided with a limiting lug corresponding to the limiting groove.
3. The MPP power tube of claim 1, wherein: a side face, close to the inner pipe, of the bar is provided with a bar groove, and the outer side wall of the inner pipe is provided with a convex strip corresponding to the bar groove.
4. The MPP power tube of claim 1, wherein: the side wall of the inner pipe at the bottommost part is provided with through holes which are arranged at equal intervals.
5. The MPP power tube of claim 1, wherein: the bar and the outer tube are arranged integrally.
6. A process for preparing an MPP power tube as set forth in any one of claims 1-5, characterized in that: the method comprises the following steps:
preparing master batches of an outer pipe and an inner pipe;
step two, respectively putting the master batch prepared in the step one into different bins for drying and preheating;
step three, putting the preheated outer tube master batch into an extruder to integrally extrude the outer tube and the bar;
step four, putting the preheated inner tube master batch into an extruder for extrusion;
step five, putting the outer pipe and the inner pipe prepared in the step three and the step four into cooling water for cooling and carrying out isometric cutting;
step six, processing the cut outer tube and the cut bar in the step five;
and step seven, aligning the inner pipe with the two ends of the bar, and then welding and fixing to obtain a final product.
7. The MPP power tube preparation process of claim 1, wherein: and the bar groove of the bar in the third step is formed by extrusion, and the convex strip of the inner pipe in the fourth step is formed by extrusion.
8. The MPP power tube preparation process of claim 1, wherein: the cutting steps of the middle and outer tube in the fifth step are as follows:
1) cutting the outer pipe in advance to be equal in length;
2) cutting the outer wall of one end of the outer pipe to the position of the bar by adopting hot cutting, cutting the side surface of the bar by adopting an arc-shaped cutter, removing the cut outer pipe and enabling the bar to protrude out of the outer pipe;
3) and (3) carrying out end face cutting on the bar by adopting hot cutting, cutting the side face of the bar by adopting an arc-shaped cutter, and removing the cut bar.
9. The MPP power tube preparation process of claim 1, wherein: and processing in the sixth step comprises positioning and punching the outer pipe and the bar to form a threaded hole and a threaded groove, and processing the side surfaces of the two ends of the bar to form a limiting groove and a limiting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995437.9A CN112350238B (en) | 2020-09-21 | 2020-09-21 | MPP power tube and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995437.9A CN112350238B (en) | 2020-09-21 | 2020-09-21 | MPP power tube and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112350238A true CN112350238A (en) | 2021-02-09 |
| CN112350238B CN112350238B (en) | 2022-03-11 |
Family
ID=74358222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010995437.9A Active CN112350238B (en) | 2020-09-21 | 2020-09-21 | MPP power tube and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112350238B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169885A (en) * | 1996-12-11 | 1998-06-26 | Nippon Maintech Kk | Method for protecting cable, and protective pipe for cable |
| CN205489332U (en) * | 2016-03-31 | 2016-08-17 | 宁国市明福线缆有限公司 | Novel cable protection pipe |
| CN205724794U (en) * | 2016-04-08 | 2016-11-23 | 池州江南电力设备有限公司 | A kind of MPP cable protection pipe |
| CN208634608U (en) * | 2018-08-12 | 2019-03-22 | 潍坊腾润机械有限公司 | A kind of pipe fitting of included sealing device |
| CN208997488U (en) * | 2018-11-05 | 2019-06-18 | 江西特塑新材料有限公司 | A kind of tri- layers of wall composite intensifying tube of HDPE |
| CN209545110U (en) * | 2019-03-30 | 2019-10-25 | 杭州浩飞管业有限公司 | A kind of PVC composite cable protection pipe |
| CN110571726A (en) * | 2019-09-25 | 2019-12-13 | 镇江荣诚管业有限公司 | MPP (modified Polypropylene) power tube convenient to distribute and preparation process thereof |
| CN211151418U (en) * | 2019-12-25 | 2020-07-31 | 广西宁塑科技有限公司 | MPP cable protection pipe |
| CN211239164U (en) * | 2019-12-09 | 2020-08-11 | 金华市华宇管业有限公司 | MPP electric power pipe with spiral structure on inner wall |
-
2020
- 2020-09-21 CN CN202010995437.9A patent/CN112350238B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169885A (en) * | 1996-12-11 | 1998-06-26 | Nippon Maintech Kk | Method for protecting cable, and protective pipe for cable |
| CN205489332U (en) * | 2016-03-31 | 2016-08-17 | 宁国市明福线缆有限公司 | Novel cable protection pipe |
| CN205724794U (en) * | 2016-04-08 | 2016-11-23 | 池州江南电力设备有限公司 | A kind of MPP cable protection pipe |
| CN208634608U (en) * | 2018-08-12 | 2019-03-22 | 潍坊腾润机械有限公司 | A kind of pipe fitting of included sealing device |
| CN208997488U (en) * | 2018-11-05 | 2019-06-18 | 江西特塑新材料有限公司 | A kind of tri- layers of wall composite intensifying tube of HDPE |
| CN209545110U (en) * | 2019-03-30 | 2019-10-25 | 杭州浩飞管业有限公司 | A kind of PVC composite cable protection pipe |
| CN110571726A (en) * | 2019-09-25 | 2019-12-13 | 镇江荣诚管业有限公司 | MPP (modified Polypropylene) power tube convenient to distribute and preparation process thereof |
| CN211239164U (en) * | 2019-12-09 | 2020-08-11 | 金华市华宇管业有限公司 | MPP electric power pipe with spiral structure on inner wall |
| CN211151418U (en) * | 2019-12-25 | 2020-07-31 | 广西宁塑科技有限公司 | MPP cable protection pipe |
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| Publication number | Publication date |
|---|---|
| CN112350238B (en) | 2022-03-11 |
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| PB01 | Publication | ||
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Denomination of invention: An MPP power pipe and its preparation process Effective date of registration: 20230531 Granted publication date: 20220311 Pledgee: Bank of China LiuAn Branch Pledgor: ANHUI HAITONG PLASTIC TECHNOLOGY CO.,LTD. Registration number: Y2023980042459 |
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| CP03 | Change of name, title or address |
Address after: 237000 meters northeast of the intersection of Saishiji Road and Guohua Road in Pingqiao Industrial Park, Yu'an District, Lu'an City, Anhui Province Patentee after: Anhui Haitong Plastic Co.,Ltd. Country or region after: China Address before: 237000 Pingqiao Industrial Park, Yu'an District, Lu'an City, Anhui Province Patentee before: ANHUI HAITONG PLASTIC TECHNOLOGY CO.,LTD. Country or region before: China |