CN112152169B - Impact-resistant CPVC power pipe and preparation method thereof - Google Patents

Impact-resistant CPVC power pipe and preparation method thereof Download PDF

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Publication number
CN112152169B
CN112152169B CN202011030717.2A CN202011030717A CN112152169B CN 112152169 B CN112152169 B CN 112152169B CN 202011030717 A CN202011030717 A CN 202011030717A CN 112152169 B CN112152169 B CN 112152169B
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China
Prior art keywords
sleeve
semicircular block
impact
power pipe
buffer
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CN202011030717.2A
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CN112152169A (en
Inventor
刘夏香
吕伟丰
夏群
陈毅
李怀波
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Hangzhou Junze Power Equipment Co ltd
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Hangzhou Junze Power Equipment Co ltd
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    • 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
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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

Abstract

The invention discloses an impact-resistant CPVC power pipe and a preparation method thereof, which comprises a power pipe body, the power tube body is formed by connecting a plurality of connecting sleeves through a fixing sleeve, the connecting sleeves comprise an outer sleeve and an inner sleeve, the two inner sleeves are arranged, the two inner sleeves are respectively sleeved at the two ends of the outer sleeve, the outer surface of the outer sleeve is provided with a shielding layer, the inner surface of the inner sleeve is provided with the anticorrosive layer, the buffer strips II on the outer surface of the inner sleeve are inserted along the gaps between the adjacent buffer strips I on the inner surface of the outer sleeve until the pull cap on the end surface of the inner sleeve is abutted against the end surface of the outer sleeve, the impact-resistant CPVC power pipe is arranged into a double-layer structure, and the first buffer strip and the second buffer strip in the double-layer structure are mutually extruded to form an anti-impact buffer layer, therefore, the impact resistance of the CPVC power pipe is improved, and the CPVC power pipe is prevented from being broken in a limited way.

Description

Impact-resistant CPVC power pipe and preparation method thereof
Technical Field
The invention belongs to the technical field of power pipes, and particularly relates to an impact-resistant CPVC power pipe and a preparation method thereof.
Background
The CPVC power pipe is usually used as a cable protection pipe, the product has the characteristics of high strength, good flexibility, high temperature resistance, corrosion resistance, flame retardance, good insulating property, no pollution, difficult aging, light weight, convenient construction and the like, and each performance index of the CPVC power pipe reaches or exceeds the level of similar domestic products after national-level and provincial detection, identification and certification. The product performance is superior to the traditional asbestos cable duct and the common PVC pipe, and is an ideal substitute for the traditional power cable sheath pipe. The method is widely applied to the construction and the transformation of the urban power grid; urban municipal engineering reconstruction; civil aviation airport engineering construction; engineering construction of engineering parks and cells; the urban street lamp cable laying for traffic and road and bridge engineering construction plays a role in guiding and protecting. With the acceleration of the urbanization process, the cables are laid from the overhead to the underground by the wire pole, so that the protection of the cables is important.
The CPVC pipe with the shock resistance and the ageing resistance, as disclosed in the patent application No. 201922124010.7, comprises a pipe body, an upper end reinforcing layer, a lower end reinforcing layer, a reinforcing rib placing layer, a first arc reinforcing rib, a second arc reinforcing rib, a connector and a flexible protective layer, wherein the upper part of the inner side wall of the pipe body is provided with pipe body threads, the connector is arranged at the lower end of the pipe body, the outer side wall of the connector is provided with the connector threads matched with the pipe body threads, the upper end reinforcing layer is arranged at the upper part of the pipe body, the lower end reinforcing layer is arranged at the lower part of the pipe body, the reinforcing rib placing layer is arranged in a crossed shape in a pairwise symmetrical mode and is arranged around the inner part of the side wall of the pipe body, and the first arc reinforcing rib and the second arc reinforcing rib are arranged at the two sides of the inner part of the reinforcing rib placing layer along the radial direction of the pipe body in a relative mode; the CPVC electric power pipe has certain shock absorption capacity and strong environmental tolerance, but still has the following defects in the use process of the existing CPVC electric power pipe:
1. the existing CPVC power pipe is complicated to connect in the using process, and wastes time and labor due to the fact that threads are connected in a rotating mode for many times;
2. the existing CPVC power pipe is of a single-layer pipe fitting structure, so that the existing CPVC power pipe has poor self-buffering capacity, low impact resistance and easy breakage,
3. the existing CPVC power pipe has a plurality of protection measures on the outer surface of the pipeline, and the protection on the CPVC power pipe is neglected, so that the inner surface of the CPVC power pipe is easily corroded and damaged.
Disclosure of Invention
The invention aims to provide an impact-resistant CPVC power pipe and a preparation method thereof, wherein a buffer strip II on the outer surface of an inner sleeve is inserted along a gap between adjacent buffer strips I on the inner surface of an outer sleeve until a pull cap on the end surface of the inner sleeve is abutted against the end surface of the outer sleeve to obtain a connecting sleeve, the pull caps on the adjacent connecting sleeve are clamped in an annular groove of a fixing sleeve, a vertical rod of a T-shaped locking rod is clamped in a C-shaped clamping groove II of a semicircular block I, the locking sleeve is rotated to tightly press the semicircular block I and the semicircular block II, so that rubber gaskets on the inner walls of the semicircular block I and the semicircular block II are abutted against the arc side surface of the outer sleeve, and the fixing sleeve is locked and fixed on the adjacent connecting sleeve to obtain the impact-resistant CPVC power pipe, namely the impact-resistant CPVC power pipe is quickly, simply and conveniently connected in the using process, saves time and labor, the operation is convenient; inserting a buffer strip II on the outer surface of the inner sleeve along a gap between adjacent buffer strips I on the inner surface of the outer sleeve until a pull cap on the end surface of the inner sleeve abuts against the end surface of the outer sleeve, setting the anti-impact CPVC power pipe into a double-layer structure, and extruding the buffer strips I and the buffer strips II in the double-layer structure mutually to form an anti-impact buffer layer, so that the anti-impact capability of the CPVC power pipe is improved, and the CPVC power pipe is prevented from being broken in a limited way; the inner wall of the inner sleeve is coated with a corrosion-resistant coating prepared from polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol, epoxy resin, methyl cellulose, magnesium hydroxide, ground limestone, chitin, tetrabutyl titanate and ethylenediamine, wherein the tetrafluoroethylene and hexafluoropropylene have high corrosion resistance and high temperature resistance; to solve the problems set forth in the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme:
the anti-impact CPVC power pipe comprises a power pipe body, wherein the power pipe body is formed by connecting a plurality of connecting sleeves through a fixing sleeve, each connecting sleeve comprises an outer sleeve and two inner sleeves, the two inner sleeves are arranged and respectively sleeved at two ends of the outer sleeve, a shielding layer is arranged on the outer surface of the outer sleeve, and an anti-corrosion layer is arranged on the inner surface of the inner sleeve;
a separation block in an annular structure is fixedly arranged in the middle of the inner wall of the outer sleeve, the interior of the outer sleeve is separated into a first connecting cavity and a second connecting cavity through the separation block, the structures of the first connecting cavity and the second connecting cavity are completely consistent, and a plurality of first buffer strips are arranged on the inner wall of the first connecting cavity in an annular array;
the fixed cap that draws that is the loop configuration that is provided with of interior sheathed tube one end, draw cap and interior sleeve pipe structure as an organic whole, it is the buffering strip two that the annular array is provided with a plurality of and a buffering strip looks adaptation to be on the interior sheathed tube outer wall, interior sleeve pipe inserts the inside one end of outer tube and offsets with the side of separating the piece through buffering strip two, buffering strip two and buffering strip one set up at the inside alternate of outer tube, and buffering strip two offsets with the side of buffering strip one, the space intussuseption that buffering strip two and buffering strip one formed is filled with the foam powder package.
As a further scheme of the invention: the fixed cover comprises a first semicircular block and a second semicircular block, the first semicircular block is rotatably connected with one end of the second semicircular block through a pin shaft, a second C-shaped clamping groove is formed in the other end of the first semicircular block, the first C-shaped clamping groove is formed in the other end of the second semicircular block, a T-shaped locking rod is rotatably connected in the first C-shaped clamping groove of the second semicircular block, one end of the vertical rod of the T-shaped locking rod is connected in the second C-shaped clamping groove of the first semicircular block in a clamped mode, an external thread is formed in the top of the vertical rod of the T-shaped locking rod, a locking sleeve is connected to the T-shaped locking rod through a thread, and the bottom surface of the locking sleeve is abutted to the upper end face of the second C-shaped clamping groove.
As a still further scheme of the invention: c-shaped grooves are formed in the inner walls of the first semicircular block and the second semicircular block, the first semicircular block and the C-shaped grooves of the second semicircular block form annular grooves together, colloid gaskets are arranged on the inner walls of the first semicircular block and the second semicircular block and located on two sides of the annular grooves, and the colloid gaskets are abutted to the arc side faces of the outer sleeve.
As a still further scheme of the invention: the two ends of the horizontal rod of the T-shaped locking rod are respectively provided with a connecting rod, through holes matched with the connecting rods are formed in two sides of the C-shaped clamping groove along the horizontal direction, and the T-shaped locking rod is rotatably connected in the through holes of the C-shaped clamping groove I through the connecting rods at the two ends of the horizontal rod.
As a still further scheme of the invention: the locking sleeve is of a circular truncated cone structure, and an internal thread matched with the external thread of the vertical rod of the T-shaped locking rod is formed in the bottom surface of the locking sleeve.
As a still further scheme of the invention: the pulling cap on the end face of the adjacent connecting sleeve is erected in the annular groove of the fixed sleeve.
As a still further scheme of the invention: the first buffer strip and the second buffer strip are both made of rubber materials.
As a still further scheme of the invention: a foam extinguishing agent is placed inside the foam powder bag, and the shielding layer is made of metal lead in a coating mode.
As a still further scheme of the invention: the anticorrosive layer is formed by spraying anticorrosive water-based paint on the inner wall of the inner sleeve;
the anticorrosive water-based paint is prepared by the following steps:
the method comprises the following steps: putting polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol and epoxy resin into a stirring kettle, stirring and mixing, heating the stirring kettle to 150 ℃, adding methyl cellulose, magnesium hydroxide and ground calcium carbonate, continuously stirring and keeping the rotating speed at 1200r/min, and stirring for 20-30 minutes to fully mix to obtain a liquid material;
step two: putting the liquid material obtained in the step one into a dispersion container, adding chitin, tetrabutyl titanate and ethylenediamine into the dispersion container, continuously mixing and stirring at the rotating speed of 2000r/min, and stirring for 30-40 minutes to obtain the anticorrosive water-based paint;
in the step one, the raw materials in parts by weight are as follows: 15 parts of polyurethane rubber, 10 parts of tetrafluoroethylene, 6 parts of hexafluoropropylene, 7 parts of polyvinyl alcohol, 5 parts of epoxy resin, 1 part of methyl cellulose, 2 parts of magnesium hydroxide and 2 parts of ground calcium carbonate;
in the second step, the raw materials comprise 5 parts by weight of chitin, 5 parts by weight of tetrabutyl titanate and 5 parts by weight of ethylenediamine.
As a still further scheme of the invention: a preparation method of an impact-resistant CPVC power pipe specifically comprises the following steps:
s1: respectively arranging inner sleeves which are matched at two ends of the outer sleeve, inserting a buffer strip II on the outer surface of the inner sleeve into a gap between adjacent buffer strips I on the inner surface of the outer sleeve, putting a plurality of foam powder bags into a cavity formed by the buffer strips I and the buffer strips II until a pull cap on the end surface of the inner sleeve abuts against the end surface of the outer sleeve, and pressing the inner sleeves at two ends of the outer sleeve for multiple times to obtain a connecting sleeve;
s2: taking a plurality of connecting sleeves prepared in S1, clamping pull caps on adjacent connecting sleeves in an annular groove of a fixing sleeve, clamping a vertical rod of a T-shaped locking rod in a C-shaped clamping groove II of a semicircular block I, and rotating the locking sleeve to enable the locking sleeve to tightly press the semicircular block I and the semicircular block II so that colloid gaskets on the inner walls of the semicircular block I and the semicircular block II are abutted against the arc side surface of an outer sleeve, thereby locking and fixing the adjacent connecting sleeves by the fixing sleeve and obtaining the impact-resistant CPVC power pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. inserting a second buffer strip on the outer surface of the inner sleeve into a gap between adjacent first buffer strips on the inner surface of the outer sleeve until a pull cap on the end surface of the inner sleeve abuts against the end surface of the outer sleeve to obtain a connecting sleeve, clamping the pull cap on the adjacent connecting sleeve into an annular groove of the fixing sleeve, clamping a vertical rod of a T-shaped locking rod into a second C-shaped clamping groove of a first semicircular block, and rotating the locking sleeve to enable the locking sleeve to tightly press the first semicircular block and the second semicircular block so that colloid gaskets on the inner walls of the first semicircular block and the second semicircular block abut against the arc side surface of the outer sleeve to lock and fix the adjacent connecting sleeve by the fixing sleeve, thereby obtaining the impact-resistant CPVC power tube, namely the impact-resistant CPVC power tube disclosed by the invention is quick and simple to connect in the using process, saves time and labor and is convenient to operate;
2. inserting a buffer strip II on the outer surface of the inner sleeve along a gap between adjacent buffer strips I on the inner surface of the outer sleeve until a pull cap on the end surface of the inner sleeve abuts against the end surface of the outer sleeve, setting the anti-impact CPVC power pipe into a double-layer structure, and extruding the buffer strips I and the buffer strips II in the double-layer structure mutually to form an anti-impact buffer layer, so that the anti-impact capability of the CPVC power pipe is improved, and the CPVC power pipe is prevented from being broken in a limited way;
3. according to the invention, a plurality of foam powder bags are placed in the cavity formed by the first buffer strip and the second buffer strip, so that the fire of the section of the cable can be quickly extinguished when the short circuit of the cable in the CPVC power pipe is ignited, the spread of the fire is prevented, and the protection effect on the CPVC power pipe, namely the whole cable is achieved;
4. according to the invention, the inner wall of the inner sleeve is provided with the anticorrosive layer, namely the inner wall of the inner sleeve is coated with the corrosion-resistant coating prepared from polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol, epoxy resin, methyl cellulose, magnesium hydroxide, ground limestone, chitin, tetrabutyl titanate and ethylenediamine, wherein the tetrafluoroethylene and the hexafluoropropylene have higher corrosion resistance and high temperature resistance, the chitin, the tetrabutyl titanate and the ethylenediamine are added to prepare the modified material, and then the modified material is uniformly mixed with the polyurethane rubber, the tetrafluoroethylene, the hexafluoropropylene, the polyvinyl alcohol and the composite filler to prepare the corrosion-resistant material, so that the corrosion resistance protection of the inner wall of the CPVC power pipe is enhanced, the corrosion resistance of the CPVC power pipe is improved, and the service life of the CPVC power pipe is prolonged.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a power tube body according to the present invention.
FIG. 2 is a perspective view showing the connection of the outer tube and the inner tube according to the present invention.
Fig. 3 is a half sectional view of the outer sleeve of the present invention.
Fig. 4 is a left side view of the inner sleeve of the present invention.
FIG. 5 is a schematic view of the connection structure of the outer sleeve and the inner sleeve according to the present invention.
Fig. 6 is an enlarged view at a in fig. 5.
Fig. 7 is a perspective view of the pouch of the present invention.
Figure 8 is a front view of the pouch of the present invention.
In the figure: 1. a power pipe body; 2. an outer sleeve; 201. a separation block; 202. buffering the first strip; 203. a shielding layer; 3. an inner sleeve; 301. pulling the cap; 302. a second buffer strip; 303. an anticorrosive layer; 4. fixing a sleeve; 401. a semicircular block I; 402. a second semicircular block; 403. c-shaped grooves; 404. a colloidal pad; 405. a T-shaped locking rod; 406. a C-shaped clamping groove I; 407. a connecting rod; 408. a C-shaped clamping groove II; 409. a locking sleeve; 410. a pin shaft; 5. and (4) packaging the foam powder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, an impact-resistant CPVC power pipe includes a power pipe body 1, the power pipe body 1 is formed by connecting a plurality of connection sleeves through a fixing sleeve 4, each connection sleeve includes an outer sleeve 2 and an inner sleeve 3, the two inner sleeves 3 are disposed, the two inner sleeves 3 are respectively sleeved at two ends of the outer sleeve 2, a shielding layer 203 is disposed on an outer surface of the outer sleeve 2, and an anti-corrosion layer 303 is disposed on an inner surface of the inner sleeve 3.
The middle position of the inner wall of the outer sleeve 2 is fixedly provided with a separating block 201 which is of an annular structure, the interior of the outer sleeve 2 is separated into a first connecting cavity and a second connecting cavity through the separating block 201, the structure of the first connecting cavity is completely consistent with that of the second connecting cavity, the inner wall of the first connecting cavity is provided with a plurality of first buffer strips 202 in an annular array manner, one end of the inner sleeve 3 is fixedly provided with a pull cap 301 which is of an annular structure, the pull cap 301 and the inner sleeve 3 are of an integral structure, the outer wall of the inner sleeve 3 is provided with a plurality of second buffer strips 302 which are matched with the first buffer strips 202 in an annular array manner, the inner sleeve 3 is inserted into the interior of the outer sleeve 2 through the second buffer strips 302, one end of the inner sleeve 3 which is inserted into the outer sleeve 2 abuts against the side surface of the separating block 201, namely the second buffer strips 302 on the outer surface of the inner sleeve 3 are inserted along the gaps of the adjacent first buffer strips 202 on the inner surface of the outer sleeve 2, until the end face of the outer sleeve 2 abuts against the end face of the pulling cap 301 on the end face of the inner sleeve 3, the impact-resistant CPVC power pipe is set to be of a double-layer structure, and the first buffer strip 202 and the second buffer strip 302 in the double-layer structure are mutually extruded to form an impact-resistant buffer layer, so that the impact resistance of the CPVC power pipe is improved, and the CPVC power pipe is prevented from being broken in a limited mode.
Buffer two 302 and buffer one 202 inside alternate settings of outer tube 2, and the side of buffer two 302 and buffer one 202 offsets, the space intussuseption that buffer two 302 and buffer one 202 formed is filled with foam powder package 5, through put into a plurality of foam powder package 5 in the cavity that buffer one 202 and buffer two 302 formed, can put out the fire of this section of circuit rapidly when taking place the short circuit to CPVC power pipe inside cable through foam powder package 5 and catch fire, prevent stretching of the intensity of a fire, play the guard action to CPVC power pipe whole cable promptly.
The fixing sleeve 4 is composed of a first semicircular block 401 and a second semicircular block 402, one end of the first semicircular block 401 is rotatably connected with one end of the second semicircular block 402 through a pin shaft 410, the other end of the first semicircular block 401 is provided with a second C-shaped clamping groove 408, the other end of the second semicircular block 402 is provided with a first C-shaped clamping groove 406, the first C-shaped clamping groove 406 of the second semicircular block 402 is rotatably connected with a T-shaped locking rod 405, one end of the vertical rod of the T-shaped locking rod 405 is clamped in the second C-shaped clamping groove 408 of the first semicircular block 401, the top of the vertical rod of the T-shaped locking rod 405 is provided with an external thread, the T-shaped locking rod 405 is connected with a locking sleeve 409 through a thread, the bottom surface of the locking sleeve 409 is abutted against the upper end surface of the second C-shaped clamping groove 408, the inner walls of the first semicircular block 401 and the second semicircular block 402 are both provided with C-shaped grooves 403, the first semicircular block 401 and the second semicircular block 402 form an annular groove 403 together, the inner walls of the first semicircular block 401 and the second semicircular block 402 are provided with colloid gaskets 404 at two sides of the annular groove, the colloid gaskets 404 are abutted against the arc side surface of the outer sleeve 2, the pull cap 301 on the adjacent connecting sleeve is clamped in the annular groove of the fixing sleeve 4, the vertical rod of the T-shaped locking rod 405 is clamped in the C-shaped clamping groove II 408 of the first semicircular block 401, the locking sleeve 409 is rotated to enable the locking sleeve 409 to tightly press the first semicircular block 401 and the second semicircular block 402, and the colloid gaskets 404 on the inner walls of the first semicircular block 401 and the second semicircular block 402 are abutted against the arc side surface of the outer sleeve 2, so that the fixing sleeve 4 is locked and fixed on the adjacent connecting sleeve, and the impact-resistant CPVC power tube is obtained.
The two ends of the horizontal rod of the T-shaped locking rod 405 are respectively provided with a connecting rod 407, through holes matched with the connecting rods 407 are formed in the two sides of the first C-shaped clamping groove 406 along the horizontal direction, and the T-shaped locking rod 405 is rotatably connected in the through holes of the first C-shaped clamping groove 406 through the connecting rods 407 at the two ends of the horizontal rod.
The locking sleeve 409 is of a circular truncated cone structure, and an internal thread matched with the external thread of the vertical rod of the T-shaped locking rod 405 is formed in the bottom surface of the locking sleeve 409.
The pulling cap 301 on the end face of the adjacent connecting sleeve is erected in the annular groove of the fixed sleeve 4.
The first buffer strip 202 and the second buffer strip 302 are both made of rubber materials, so that the impact resistance of the CPVC power pipe is improved.
A foam extinguishing agent is placed inside the foam powder bag 5, and the shielding layer 203 is made of metal lead in a coating mode.
The anticorrosive layer 303 is formed by spraying anticorrosive water-based paint on the inner wall of the inner sleeve 3;
the anticorrosive water-based paint is prepared by the following steps:
the method comprises the following steps: putting polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol and epoxy resin into a stirring kettle, stirring and mixing, heating the stirring kettle to 150 ℃, adding methyl cellulose, magnesium hydroxide and ground calcium carbonate, continuously stirring and keeping the rotating speed at 1200r/min, and stirring for 20-30 minutes to fully mix to obtain a liquid material;
step two: putting the liquid material obtained in the step one into a dispersion container, adding chitin, tetrabutyl titanate and ethylenediamine into the dispersion container, continuously mixing and stirring at the rotating speed of 2000r/min, and stirring for 30-40 minutes to obtain the anticorrosive water-based paint;
in the step one, the raw materials in parts by weight are as follows: 15 parts of polyurethane rubber, 10 parts of tetrafluoroethylene, 6 parts of hexafluoropropylene, 7 parts of polyvinyl alcohol, 5 parts of epoxy resin, 1 part of methyl cellulose, 2 parts of magnesium hydroxide and 2 parts of ground calcium carbonate;
in the second step, the raw materials comprise 5 parts by weight of chitin, 5 parts by weight of tetrabutyl titanate and 5 parts by weight of ethylenediamine;
tetrafluoroethylene and hexafluoropropylene have higher corrosion resistance and high temperature resistance, the modified material is prepared by adding chitin, tetrabutyl titanate and ethylenediamine, and then the modified material is uniformly mixed with polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol and composite filler to prepare the corrosion-resistant material, so that the corrosion protection of the inner wall of the CPVC power pipe is enhanced, the corrosion resistance of the CPVC power pipe is improved, and the service life of the CPVC power pipe is prolonged.
A preparation method of an impact-resistant CPVC power pipe specifically comprises the following steps:
s1: respectively arranging inner sleeves 3 which are matched with each other at two ends of the outer sleeve 2, inserting a buffer strip II 302 on the outer surface of the inner sleeve 3 along a gap between adjacent buffer strips I202 on the inner surface of the outer sleeve 2, putting a plurality of foam powder bags 5 in a cavity formed by the buffer strips I202 and the buffer strips II 302 until a pull cap 301 on the end surface of the inner sleeve 3 is abutted against the end surface of the outer sleeve 2, and pressing the inner sleeves 3 at two ends of the outer sleeve 2 for multiple times to obtain a connecting sleeve;
s2: taking a plurality of connecting sleeves prepared in S1, clamping the pull caps 301 on the adjacent connecting sleeves in the annular groove of the fixing sleeve 4, clamping the vertical rod of the T-shaped locking rod 405 in the C-shaped clamping groove II 408 of the semicircular block I401, and rotating the locking sleeve 409 to enable the locking sleeve 409 to tightly press the semicircular block I401 and the semicircular block II 402, so that the colloid gaskets 404 on the inner walls of the semicircular block I401 and the semicircular block II 402 are abutted against the arc side surface of the outer sleeve 2, thereby completing the locking and fixing of the fixing sleeve 4 on the adjacent connecting sleeves and further obtaining the impact-resistant CPVC power tube.
The working principle of the fixing sleeve is as follows: inserting the second buffer strip 302 on the outer surface of the inner sleeve 3 along the gap between the first adjacent buffer strip 202 on the inner surface of the outer sleeve 2 until the pull cap 301 on the end surface of the inner sleeve 3 abuts against the end surface of the outer sleeve 2 to obtain a connecting sleeve, clamping the pull cap 301 on the adjacent connecting sleeve in the annular groove of the fixing sleeve 4, clamping the vertical rod of the T-shaped locking rod 405 in the second C-shaped clamping groove 408 of the first semicircular block 401, and rotating the locking sleeve 409 to realize that the locking sleeve 409 compresses the first semicircular block 401 and the second semicircular block 402, so that the colloid gaskets 404 on the inner walls of the first semicircular block 401 and the second semicircular block 402 abut against the arc side surface of the outer sleeve 2, thereby completing the locking and fixing of the fixing sleeve 4 on the adjacent connecting sleeve and obtaining the impact-resistant CPVC power pipe.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a CPVC power tube shocks resistance, includes power tube body (1), its characterized in that, power tube body (1) is connected through fixed cover (4) by a plurality of adapter sleeve and constitutes, adapter sleeve includes outer tube (2) and interior sleeve pipe (3), interior sleeve pipe (3) set up two, and two interior sleeve pipe (3) cup joint respectively at the both ends of outer tube (2), be provided with shielding layer (203) on the surface of outer tube (2), be provided with anticorrosive coating (303) on the internal surface of interior sleeve pipe (3);
a separation block (201) in an annular structure is fixedly arranged in the middle of the inner wall of the outer sleeve (2), the interior of the outer sleeve (2) is separated into a first connecting cavity and a second connecting cavity through the separation block (201), the structure of the first connecting cavity is completely consistent with that of the second connecting cavity, and a plurality of first buffer strips (202) are arranged on the inner wall of the first connecting cavity in an annular array;
a pulling cap (301) which is of an annular structure is fixedly arranged at one end of the inner sleeve (3), the pulling cap (301) and the inner sleeve (3) are of an integral structure, a plurality of buffering strips II (302) which are matched with the buffering strips I (202) are arranged on the outer wall of the inner sleeve (3) in an annular array mode, the inner sleeve (3) is inserted into the outer sleeve (2) through the buffering strips II (302), one end, inserted into the outer sleeve (2), of the inner sleeve (3) abuts against the side face of the separating block (201), the buffering strips II (302) and the buffering strips I (202) are arranged inside the outer sleeve (2) at intervals, the buffering strips II (302) abut against the side face of the buffering strips I (202), and a gap formed by the buffering strips II (302) and the buffering strips I (202) is filled with a foam powder bag (5);
the impact-resistant buffer layer is formed by mutually extruding the first buffer strip (202) and the second buffer strip (302) in the double-layer structure.
2. An impact-resistant CPVC power pipe as claimed in claim 1, wherein said fixing sleeve (4) is composed of a first semicircular block (401) and a second semicircular block (402), said first semicircular block (401) is rotatably connected with one end of said second semicircular block (402) through a pin (410), said first semicircular block (401) is provided with a second C-shaped slot (408) at the other end, said second semicircular block (402) is provided with a first C-shaped slot (406) at the other end, said first C-shaped slot (406) of said second semicircular block (402) is rotatably connected with a T-shaped locking rod (405), one end of a vertical rod of said T-shaped locking rod (405) is clamped in said second C-shaped slot (408) of said first semicircular block (401), the top of said vertical rod of said T-shaped locking rod (405) is provided with an external thread, and a locking sleeve (409) is connected with said T-shaped locking rod (405) through a thread, the bottom surface of the locking sleeve (409) abuts against the upper end surface of the C-shaped clamping groove II (408).
3. An impact-resistant CPVC power pipe as claimed in claim 2, wherein the inner walls of said first semicircular block (401) and said second semicircular block (402) are both provided with C-shaped grooves (403), said C-shaped grooves (403) of said first semicircular block (401) and said second semicircular block (402) form an annular groove, said inner walls of said first semicircular block (401) and said second semicircular block (402) are provided with rubber gaskets (404) at two sides of said annular groove, and said rubber gaskets (404) are abutted against the arc side of said outer sleeve (2).
4. An impact-resistant CPVC power pipe as claimed in claim 3, wherein two ends of the horizontal rod of said T-shaped locking lever (405) are respectively provided with a connecting rod (407), and two sides of said C-shaped slot I (406) are horizontally provided with through holes adapted to said connecting rods (407), said T-shaped locking lever (405) is rotatably connected in said through holes of said C-shaped slot I (406) through said connecting rods (407) at two ends of said horizontal rod.
5. An impact-resistant CPVC power pipe as claimed in claim 4, wherein said locking sleeve (409) is of a circular truncated cone structure, and an internal thread matched with the external thread of the vertical rod of the T-shaped locking rod (405) is formed on the bottom surface of the locking sleeve (409).
6. An impact resistant CPVC power pipe as claimed in claim 5, wherein the pulling cap (301) on the end face of the adjacent connecting sleeve is mounted in the annular groove of said fixing sleeve (4).
7. An impact resistant CPVC power pipe as claimed in claim 6, wherein said first (202) and second (302) damping strips are made of rubber material.
8. An impact resistant CPVC power pipe as claimed in claim 7, wherein said foam powder bag (5) has a foam fire extinguishing agent placed inside, and said shielding layer (203) is made of metallic lead coating.
9. An impact resistant CPVC power pipe as claimed in claim 8, wherein said corrosion resistant layer (303) is made by spraying a corrosion resistant water based paint on the inner wall of the inner pipe (3);
the anticorrosive water-based paint is prepared by the following steps:
the method comprises the following steps: putting polyurethane rubber, tetrafluoroethylene, hexafluoropropylene, polyvinyl alcohol and epoxy resin into a stirring kettle, stirring and mixing, heating the stirring kettle to 150 ℃, adding methyl cellulose, magnesium hydroxide and ground calcium carbonate, continuously stirring and keeping the rotating speed at 1200r/min, and stirring for 20-30 minutes to fully mix to obtain a liquid material;
step two: putting the liquid material obtained in the step one into a dispersion container, adding chitin, tetrabutyl titanate and ethylenediamine into the dispersion container, continuously mixing and stirring at the rotating speed of 2000r/min, and stirring for 30-40 minutes to obtain the anticorrosive water-based paint;
the weight parts of the raw materials in the step one are as follows: 15 parts of polyurethane rubber, 10 parts of tetrafluoroethylene, 6 parts of hexafluoropropylene, 7 parts of polyvinyl alcohol, 5 parts of epoxy resin, 1 part of methyl cellulose, 2 parts of magnesium hydroxide and 2 parts of ground calcium carbonate;
in the second step, the raw materials comprise 5 parts by weight of chitin, 5 parts by weight of tetrabutyl titanate and 5 parts by weight of ethylenediamine.
10. The method for preparing an impact resistant CPVC power pipe as set forth in claim 9, which specifically comprises the steps of:
s1: the two ends of the outer sleeve (2) are respectively provided with the inner sleeve (3) which is matched with the inner sleeve, so that a buffer strip II (302) on the outer surface of the inner sleeve (3) is inserted along the gap between the adjacent buffer strips I (202) on the inner surface of the outer sleeve (2), a plurality of foam powder bags (5) are placed in a cavity formed by the buffer strips I (202) and the buffer strips II (302) until a pull cap (301) on the end surface of the inner sleeve (3) abuts against the end surface of the outer sleeve (2), and the inner sleeve (3) at the two ends of the outer sleeve (2) is pressed for multiple times to obtain a connecting sleeve;
s2: taking a plurality of connecting sleeves prepared in S1, clamping a pulling cap (301) on the adjacent connecting sleeve in an annular groove of a fixing sleeve (4), clamping a vertical rod of a T-shaped locking rod (405) in a C-shaped clamping groove II (408) of a semicircular block I (401), and pressing the semicircular block I (401) and the semicircular block II (402) by the locking sleeve (409) through rotating the locking sleeve (409), so that a colloid gasket (404) on the inner walls of the semicircular block I (401) and the semicircular block II (402) is abutted against the arc side surface of an outer sleeve (2), thereby locking and fixing the adjacent connecting sleeves by the fixing sleeve (4) and obtaining the impact-resistant CPVC power tube.
CN202011030717.2A 2020-09-27 2020-09-27 Impact-resistant CPVC power pipe and preparation method thereof Active CN112152169B (en)

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Denomination of invention: A shock resistant CPVC power pipe and its preparation method

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