CN110783866B - MPP power cable protection tube - Google Patents
MPP power cable protection tube Download PDFInfo
- Publication number
- CN110783866B CN110783866B CN201911245849.4A CN201911245849A CN110783866B CN 110783866 B CN110783866 B CN 110783866B CN 201911245849 A CN201911245849 A CN 201911245849A CN 110783866 B CN110783866 B CN 110783866B
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- Prior art keywords
- power cable
- locating piece
- groove
- protection tube
- positioning block
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 13
- 239000003063 flame retardant Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000013021 overheating Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- H02G3/03—Cooling
-
- 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
- H02G3/0406—Details thereof
- H02G3/0412—Heat or fire protective means
-
- 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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
-
- 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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
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 provides an MPP power cable protection pipe, which comprises an outer pipe body, a positioning block and a fastening plate, and is characterized in that: the outer body inner wall seted up the draw-in groove, locating piece one end be provided with fixture block, spread groove, the other end is provided with fixture block, spread groove, be provided with vice protection tube on the locating piece to set up the locating piece one end relative with vice protection tube into the arc structure, locating piece and locating piece between be connected through connecting block and spread groove to insert the fixture block on the locating piece in the draw-in groove, the mounting plate setting in the locating piece, be provided with the spliced pole on the mounting plate to wear out the spliced pole from the locating hole. According to the invention, the heat dissipation groove is arranged on the outer tube body at one side of the clamping groove, so that heat generated by the power cable in the working process can be discharged from the heat dissipation groove through the heat dissipation groove, the heat is prevented from being accumulated in the protection tube, the power cable core is prevented from being ignited due to overheating, and the integrity of the power cable in the protection tube is improved.
Description
Technical Field
The invention relates to a cable protection pipe, in particular to an MPP power cable protection pipe.
Background
In daily life, power cables are widely applied to various industries and various occasions, and the service life of a cable protection pipe is greatly shortened when some power cables are placed in a severe environment, such as being buried underground, having a humid underground environment, or being exposed outdoors, being exposed to wind, sunshine and the like; with the progress of the times, the requirements of the cable protection pipe are higher and higher. For example, patent No. 201720852592.9 discloses an MPP power cable protection tube, which solves the problems that the space of the cable protection tube cannot be effectively utilized and is easy to corrode and burn, but has the problems that the stability of the power cable protection tube after installation is poor, the power cable is easy to shake in the protection tube, and the protection strength of the power cable is not high.
Disclosure of Invention
The invention aims to solve the problems that the existing MPP power cable protection pipe is poor in stability after installation, a power cable is easy to shake in the protection pipe and the protection strength of the power cable is not high.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a MPP power cable protection pipe, its includes outer body, locating piece and mounting plate, its characterized in that: the inner wall of the outer pipe body is provided with a clamping groove, space can be provided for a clamping block on a positioning block through the clamping groove, the combined positioning block is firmly positioned in the outer pipe body, the power cable is protected by the combined positioning block, the protection performance of the power cable is improved, one end of the positioning block is provided with the clamping block and a connecting groove, the other end of the positioning block is provided with the clamping block and a connecting block, an auxiliary protection pipe is arranged on the positioning block, one end of the positioning block opposite to the auxiliary protection pipe is arranged to be of an arc-shaped structure, the positioning block is connected with the connecting groove through the connecting block, the clamping block on the positioning block is inserted into the clamping groove, two adjacent positioning blocks are connected through the connecting block and the connecting groove, the connection strength between the positioning block and the positioning block is improved, the power cable penetrates into the combined positioning block, and, the protection performance of the power cable is improved, the power cable is prevented from being damaged, the service life of the power cable is prolonged, the positioning block and the positioning block are connected through the connecting block and the connecting groove, the clamping block on the positioning block is inserted into the clamping groove, the clamping block is inserted into the clamping groove, the positioning block can be prevented from shaking in the outer tube body, the stability of the power cable in the protecting tube is further improved, the auxiliary power cable penetrates through the auxiliary protecting tube to protect the auxiliary power cable, the stability of the power cable in the protecting tube is further enhanced, the fastening plate is arranged in the positioning block, the connecting column is arranged on the fastening plate and penetrates out of the positioning block, the strength of the positioning block can be improved through the fastening plate, the strength of the power cable protecting tube is further enhanced, the connecting column and the anti-channeling projections are both made of rubber materials, and the friction force of the power cable in the protecting tube can, the power cable is prevented from shaking in the protection pipe, and the stability of the power cable in the protection pipe is enhanced.
Preferably, the outer pipe body surface be provided with the flame retardant coating, and be provided with the wearing layer at the flame retardant coating surface, can strengthen the fire prevention fire behavior of power cable protection pipe through the flame retardant coating, improve the security of power cable at the protection tube, strengthen the protection intensity of power cable protection pipe to power cable, prolong power cable's life, be provided with the wearing layer at the flame retardant coating surface, can slow down power cable by the degree of wear, make the wearing layer play the guard action to power cable protection pipe, improve power cable protection pipe's life, on the other hand, can improve the frictional force of power cable protection pipe after the installation through the wearing layer, strengthen the stability of power cable protection pipe after the installation, further improve power cable's stability in the protection pipe, prolong power cable's security in the course of operation.
Preferably, the outer body on one side of the clamping groove is provided with a radiating groove, heat generated by the power cable in the working process can be discharged from the radiating groove through the radiating groove, the heat is prevented from being accumulated in the protection pipe, the power cable core is prevented from being ignited due to overheating, and the integrity of the power cable in the protection pipe is improved.
Preferably, the positioning block, the inner wall of the outer pipe body and the auxiliary protection pipe are provided with filling layers therebetween, the filling layers are made of flame-retardant materials, the flame-retardant materials are filled between the positioning block and the inner wall of the outer pipe body and between the positioning block and the auxiliary protection pipe, so that the positioning block, the inner wall of the outer pipe body and between the positioning block and the auxiliary protection pipe are filled, the auxiliary protection pipe is prevented from shaking, the stability of the auxiliary power cable in the protection pipe is improved, the flame retardant property of the power cable protection pipe can be enhanced, the stability of the power cable in the protection pipe is improved, and the protection capability of the protection pipe on the power cable is.
Preferably, the spliced pole on be provided with prevent scurrying the arch, with spliced pole, prevent scurrying the arch and all set up to the rubber materials preparation, can strengthen the power cable at the intraductal frictional force of protection through preventing scurrying the arch, avoid power cable to rock in the protection tube, strengthen the stability of power cable in the protection tube.
Has the advantages that: according to the invention, the positioning block and the positioning block are connected through the connecting block and the connecting groove, the clamping block on the positioning block is inserted into the clamping groove, the clamping block is inserted into the clamping groove, the positioning block can be prevented from shaking in the outer pipe body, the stability of the power cable in the protection pipe is further improved, the auxiliary power cable penetrates through the auxiliary protection pipe to provide protection for the auxiliary power cable, the stability of the power cable in the protection pipe is further enhanced, the connecting column is provided with the anti-channeling projection, the connecting column and the anti-channeling projection are both made of rubber materials, the friction force of the power cable in the protection pipe can be enhanced through the anti-channeling projection, the power cable is prevented from shaking in the protection pipe, and the stability of the power cable in the protection.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention, illustrating a connection structure of an outer tube and a clamping groove.
Fig. 3 is a partial structural schematic view of the present invention, illustrating a connection structure of a positioning block and a secondary protection pipe.
Fig. 4 is a partial structural view illustrating a connection structure of a connection post and a tamper-proof protrusion according to the present invention.
In the figure: 1. the anti-channeling pipe comprises an outer pipe body, 2 positioning blocks, 3 fastening plates, 4 fireproof layers, 5 wear-resistant layers, 6 clamping grooves, 7 radiating grooves, 8 clamping blocks, 9 connecting grooves, 10 connecting blocks, 11 auxiliary protecting pipes, 12 filling layers, 13 connecting columns and 14 anti-channeling bulges.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings.
As shown in figures 1-4: the utility model provides a MPP power cable protection tube, its includes outer body 1, locating piece 2 and mounting plate 3, its characterized in that: the inner wall of the outer pipe body 1 is provided with a clamping groove 6, space can be provided for a clamping block 8 on a positioning block 2 through the clamping groove 6, the combined positioning block 2 is firmly positioned in the outer pipe body 1, the power cable is protected by the combined positioning block 2, the protection performance of the power cable is improved, the clamping blocks 8 are arranged at the top ends of two sides of the positioning block 2, a connecting groove 9 and a connecting block 10 are respectively arranged at two opposite sides of the positioning block 2, an auxiliary protection pipe 11 is arranged on the positioning block 2, one end of the positioning block 2 opposite to the auxiliary protection pipe 11 is arranged to be of an arc-shaped structure, two adjacent positioning blocks 2 are connected through the connecting block 10 and the connecting groove 9, the connection strength between the positioning block 2 and the positioning block 2 is improved, the power cable penetrates into the combined positioning block 2, the combined positioning hole plays a role in protecting the power cable, and the protection performance of the, the power cable is prevented from being damaged, the service life of the power cable is prolonged, the positioning block 2 and the positioning block 2 are connected with the connecting groove 9 through the connecting block 10, the clamping block 8 on the positioning block 2 is inserted into the clamping groove 6, the clamping block 8 is inserted into the clamping groove 6, the positioning block 2 can be prevented from shaking in the outer tube body 1, the stability of the power cable in the protective tube is further improved, the auxiliary power cable penetrates through the auxiliary protective tube 11 to provide protection for the auxiliary power cable, the stability of the power cable in the protective tube is further enhanced, the fastening plate 3 is arranged in the positioning block 2, the connecting column 13 is arranged on the fastening plate 3, the connecting column 13 penetrates out of the positioning block 2, the strength of the positioning block 2 can be improved through the fastening plate 3, the strength of the power cable protective tube is further enhanced, the connecting column 13 and the anti-channeling projection 14 are both made of, the friction force of the power cable in the protective pipe can be enhanced through the anti-channeling protrusion 14, the power cable is prevented from shaking in the protective pipe, and the stability of the power cable in the protective pipe is enhanced.
Preferably, the outer surface of the outer pipe body 1 is provided with a fire-proof layer 4, and the outer surface of the fire-proof layer 4 is provided with a wear-resistant layer 5, the fireproof and flame-retardant performance of the power cable protection pipe can be enhanced through the fireproof layer 4, the safety of the power cable in the protection pipe is improved, the protection strength of the power cable protection pipe on the power cable is enhanced, the service life of the power cable is prolonged, the wear-resistant layer 5 is arranged on the outer surface of the fireproof layer 4, so that the wear degree of the power cable can be reduced, the wear-resistant layer 5 can protect the power cable protection pipe, the service life of the power cable protection pipe is prolonged, on the other hand, the friction force of the power cable protection pipe after installation can be improved through the wear-resistant layer 5, the stability of the power cable protection pipe after installation is enhanced, the stability of the power cable in the protection pipe is further improved, and the safety of the power cable in the working process is prolonged.
Preferably, the outer tube body 1 on one side of the clamping groove 6 is provided with the heat dissipation groove 7, heat generated by the power cable in the working process can be discharged from the heat dissipation groove 7 through the heat dissipation groove 7, the heat is prevented from being accumulated in the protection tube, the power cable core is prevented from being ignited due to overheating, and the integrity of the power cable in the protection tube is improved.
Preferably, a filling layer 12 is arranged between the positioning block 2 and the inner wall of the outer pipe body 1 and between the auxiliary protection pipes 11, the filling layer 12 is made of a flame-retardant material, and the flame-retardant material is filled between the positioning block 2 and the inner wall of the outer pipe body 1 and between the positioning block and the auxiliary protection pipes 11, so that the positioning block 2 and the inner walls of the outer pipe body 1 and between the positioning block 2 and the auxiliary protection pipes 11 are filled, the auxiliary protection pipes 11 are prevented from shaking, the stability of the power cable in the protection pipes is improved, the flame retardant performance of the power cable protection pipes can be enhanced, the stability of the power cable.
Preferably, the connecting column 13 is provided with the anti-channeling protrusion 14, the connecting column 13 and the anti-channeling protrusion 14 are both made of rubber materials, the friction force of the power cable in the protective tube can be enhanced through the anti-channeling protrusion 14, the power cable is prevented from shaking in the protective tube, and the stability of the power cable in the protective tube is enhanced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection or point connection; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (5)
1. The utility model provides a MPP power cable protection pipe, its includes outer body (1), locating piece (2) and mounting plate (3), its characterized in that: outer body (1) inner wall seted up draw-in groove (6), locating piece (2) one end be provided with fixture block (8), spread groove (9), the other end is provided with fixture block (8), connecting block (10), be provided with vice protection tube (11) on locating piece (2) to set up locating piece (2) one end relative with vice protection tube (11) into the arc structure, locating piece (2) and locating piece (2) between be connected with spread groove (9) through connecting block (10) to insert fixture block (8) on locating piece (2) in draw-in groove (6), mounting plate (3) set up in locating piece (2), be provided with spliced pole (13) on mounting plate (3) to wear out spliced pole (13) from locating piece (2).
2. The MPP power cable protection tube of claim 1, wherein: the outer pipe body (1) surface be provided with flame retardant coating (4) to be provided with wearing layer (5) at flame retardant coating (4) surface.
3. The MPP power cable protection tube of claim 1, wherein: the outer tube body (1) at one side of the clamping groove (6) is provided with a heat dissipation groove (7).
4. The MPP power cable protection tube of claim 1, wherein: and a filling layer (12) is arranged between the positioning block (2) and the inner wall of the outer pipe body (1) and between the positioning block and the auxiliary protection pipe (11).
5. The MPP power cable protection tube of claim 1, wherein: the connecting column (13) is provided with a channeling-preventing bulge (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245849.4A CN110783866B (en) | 2019-12-07 | 2019-12-07 | MPP power cable protection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245849.4A CN110783866B (en) | 2019-12-07 | 2019-12-07 | MPP power cable protection tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110783866A CN110783866A (en) | 2020-02-11 |
| CN110783866B true CN110783866B (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911245849.4A Active CN110783866B (en) | 2019-12-07 | 2019-12-07 | MPP power cable protection tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN110783866B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363924B (en) * | 2021-06-30 | 2022-05-17 | 江苏衡羽电力有限公司 | Flame-retardant power cable protection pipe |
| CN113363904B (en) * | 2021-06-30 | 2022-07-22 | 江苏衡羽电力有限公司 | Power cable protection pipe |
| CN113949029A (en) * | 2021-11-05 | 2022-01-18 | 江苏天菱电力设备有限公司 | Anticorrosive flame retardant power cable protection tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205489331U (en) * | 2016-03-31 | 2016-08-17 | 宁国市明福线缆有限公司 | Power cable protection pipe |
| EP3346307A1 (en) * | 2017-01-06 | 2018-07-11 | Sterlite Technologies Ltd | Loose tube for optical fiber cable |
| CN207967827U (en) * | 2018-03-02 | 2018-10-12 | 南京盖迪电力器材有限公司 | Power cable protecting pipe |
| CN208723470U (en) * | 2018-08-23 | 2019-04-09 | 皖能电气有限公司 | A kind of heat sinking type MPP cable protection pipe |
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2019
- 2019-12-07 CN CN201911245849.4A patent/CN110783866B/en active Active
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| CN110783866A (en) | 2020-02-11 |
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