CN114709021A - Efficient insulating flame-retardant power cable - Google Patents
Efficient insulating flame-retardant power cable Download PDFInfo
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- CN114709021A CN114709021A CN202210254667.9A CN202210254667A CN114709021A CN 114709021 A CN114709021 A CN 114709021A CN 202210254667 A CN202210254667 A CN 202210254667A CN 114709021 A CN114709021 A CN 114709021A
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- box body
- flame
- retardant
- end cap
- cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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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
- H02G3/0406—Details thereof
- H02G3/0412—Heat or fire protective means
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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
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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
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The application discloses a high-efficiency insulating flame-retardant power cable, which comprises a cable body and a flame-retardant unit penetrated by the cable body, wherein the flame-retardant unit comprises a protective tube and end caps positioned at two ends of the protective tube, one end of each end cap is open, the other end of each end cap is provided with a through hole penetrated by the cable body, a first circular ring-shaped flange is arranged at the opening of each end cap, a circular ring-shaped separation blade penetrated by the cable body is arranged in each end cap, the inner side wall of each end cap is also provided with a butting block butted with the circular ring-shaped separation blades, two ends of the protective tube are respectively inserted into the two end caps and are butted with the circular ring-shaped separation blades in the two end caps, the protective tube is also provided with two second circular ring-shaped flanges, the two second circular ring-shaped flanges are in one-to-one correspondence with the first circular ring-shaped flanges of the two end caps, and the corresponding first circular ring-shaped flanges are fixedly connected with the second circular ring-shaped flanges; and a flame retardant is filled between one end with a through hole in the end cap and the annular baffle plate. The cable of this application has high-efficient flame retardant efficiency.
Description
Technical Field
The application relates to the field of cables, in particular to a high-efficiency insulating flame-retardant power cable.
Background
The flame-retardant cable is a cable which is characterized in that a test sample is burnt under a specified test condition, after a test fire source is removed, the flame spread is only within a limited range, and residual flame or residual ignition can be self-extinguished within a limited time. The basic characteristics are as follows: in the event of a fire, may burn out and fail to operate, but may prevent the spread of the fire. The flame retardant property is an extremely important property for the cable, and in the using process of the cable, the cable sometimes passes through the wall from one side of the wall to the other side, when the flame burns on one side of the wall, if the flame retardant property of the cable does not reach the standard or the cable is not reasonably arranged in a penetrating way, the fire may spread along the cable when the cable penetrates through the wall, and the cable is dangerous.
Disclosure of Invention
The invention aims to: in order to solve the problems mentioned in the background art, the application provides an efficient insulating flame-retardant power cable.
The technical scheme is as follows: an efficient insulation flame-retardant power cable comprises a cable body and a flame-retardant unit penetrated by the cable body, the flame-retardant unit comprises a protective tube and end caps positioned at two ends of the protective tube, one end of each end cap is open, the other end of each end cap is provided with a through hole through which the cable body passes, the opening of the end cap is provided with a first circular flange, a circular baffle sheet penetrated by the cable body is arranged in the end cap, the inner side wall of the end cap is also provided with a butt joint block which is butted with the annular separation blade, two ends of the protection tube are respectively inserted into the two end caps, the two second circular-ring-shaped flanges are in one-to-one correspondence with the first circular-ring-shaped flanges of the two end caps, and the corresponding first circular-ring-shaped flanges are fixedly connected with the second circular-ring-shaped flanges; and a flame retardant is filled between one end with a through hole in the end cap and the annular blocking piece.
Thereby the protection tube can pass wall body and wall body fixed connection to the tip cap realizes the flame retardant efficiency to a certain degree of cable.
Further, the cable body includes oversheath, armor, outer flame retardant coating, shielding layer and interior sheath from outside to inside in proper order, including a plurality of cable cores in the interior sheath, the cable core includes copper conductor, insulating layer and interior flame retardant coating from inside to outside in proper order.
The structure of the cable body can be adjusted according to the flame retardant level, but the cable body has better flame retardant property and is not easy to catch fire so as to be matched with a flame retardant unit for use.
Further, the flame retardant is fire extinguishing sand.
Further, the inner protection layer is a polyethylene inner protection layer, the inner flame-retardant layer is a low-smoke halogen-free flame-retardant layer, and the outer flame-retardant layer is a flame-retardant wrapping tape layer.
Furthermore, a lower box body positioned below the protection tube and an upper box body positioned above the protection tube are fixed at the protection tube, and a plurality of radiating fins positioned between the upper box body and the lower box body are arranged on the outer side wall of the protection tube; the lower box body is fixedly connected with a lower connecting bracket, and the upper box body is fixedly provided with an upper connecting bracket; the top end and the bottom end of the lower box body are both open, the top end of the lower box body is fixedly connected with the protection tube, and the inner space of the lower box body is not communicated with the inner space of the protection tube; the top and the bottom of top box body are all uncovered, and protection tube department has the bar intercommunicating pore and will protect inside space of tube and the box body space intercommunication in the top, top box body bottom still is fixed with the uncovered confined apron in top box body top.
Furthermore, a rectangular frame-shaped supporting convex edge is fixed on the inner side wall of the upper box body, a bearing film is fixed at the supporting convex edge, a vertical plate is also fixed in the upper box body, two ends of the vertical plate are fixed with the inner side wall of the upper box body, the vertical plate is provided with a through groove penetrating through the top end and the bottom end of the vertical plate, a piston part is also arranged in the upper box body, an inserting plate capable of being inserted into the through groove is fixed at the piston part, and a cutter is arranged at the bottom end of the inserting plate; the utility model discloses a fire extinguishing device, including top box body, sealing cover, connecting pipe, bearing film, top box body, mounting bracket, air container, connecting pipe, first solenoid valve, the top box body lateral wall still has air container through mounting bracket fixed mounting, air container passes through the space intercommunication between the piston portion of connecting pipe and top box body and the closing cover, connecting pipe department has first solenoid valve, the space packing that bears in the top box body between film and the piston portion has the sand of putting out a fire.
Furthermore, the number of the cutting knives is two, the cutting edges capable of cutting the bearing film are arranged below the cutting knives, one end of each cutting edge close to the end cap is lower than one end of each cutting edge far away from the end cap, and the cutting edges of the two cutting knives are distributed in an inverted V shape; piston portion below has two gasbags, the picture peg is located between two gasbags, and every gasbag is located between one of them lateral wall of riser and top box body, piston portion department has a plurality of through holes that run through piston portion top and bottom, every gasbag at least with one the through hole intercommunication, when the gasbag is full of gas, the bottom of gasbag is the arcwall face form, and the mid point of the bottom of gasbag is in the lowest position of gasbag.
Further, the top end of the piston part is provided with a transverse reinforcing convex rib and a longitudinal reinforcing convex rib; the bearing film is provided with a plurality of mutually parallel reinforcing strips.
The piston part is a rubber piston and can move downwards under the impact of high-pressure gas, and the transverse reinforcing convex ribs and the longitudinal reinforcing convex ribs can increase the strength of the piston part.
Further, the protection tube still is connected with the return bend of giving vent to anger, the one end that the return bend of giving vent to anger is connected with the protection tube is located the box body below, the other end of the return bend of giving vent to anger has the second solenoid valve, and the other end of the return bend of giving vent to anger is higher than support the upper surface of chimb.
The air outlet pipe can rapidly discharge the original gas in the protective pipe when the fire extinguishing sand falls.
Further, the air outlet bent pipe penetrates through the lower box body; the return bend of giving vent to anger has two, two return bends of giving vent to anger all with strip shaped plate fixed connection, strip shaped plate and top box body fixed connection.
The strip-shaped plates are used for effectively fixing the two air outlet pipes.
Further, the end cap is circular in cross-section.
Furthermore, the corresponding first circular flange and the corresponding second circular flange are fixedly connected through bolts and nuts.
Furthermore, the top end of the upper protection box is provided with a rectangular frame-shaped flange, and the closed cover plate and the rectangular frame-shaped flange are fixedly connected through bolts.
Further, the number of the through holes is 4, one air bag is communicated with two through holes, and the other air bag is communicated with the other two through holes.
Further, the fire-retardant unit still includes control unit and communication unit, first solenoid valve, second solenoid valve and communication unit all with the control unit is connected.
The communication unit is capable of establishing communication with an external smoke sensor.
Further, the gas storage tank stores high-pressure gas.
Further, the sealing cover plate is connected with the top end of the upper box body in a sealing mode.
Has the advantages that: compared with a general cable, the cable has the following advantages:
1) the cable has a double flame-retardant structure, has better flame-retardant property compared with a single-layer flame-retardant structure, and is not easy to catch fire;
2) the fire-retardant filler at fire-retardant unit both ends for the intensity of a fire is difficult to realize the extension of intensity of a fire through the cable, and tip cap length is shorter, does not influence the heat dissipation of cable self.
3) Through the structure of protection tube and upper and lower box body, on the one hand make things convenient for fixed with the wall, realize on the one hand that the initiative is spread husky fire-retardant, fire-retardant effect is better.
Drawings
FIG. 1 is a schematic view of the present application from a first perspective after installation of a cable;
FIG. 2 is a second perspective view of the cable of the present application after installation;
FIG. 3 is an exploded view of the end caps on both sides of the cable of the present application;
FIG. 4 is a schematic view of the cable of the present application from a first perspective with the closure cover, piston, etc. on either side of the cable being structurally exploded;
FIG. 5 is a schematic view of the cable shown in the present application from a second perspective of the cable with the closure cover, piston, etc. on either side of the cable exploded;
FIG. 6 is a schematic view of a third exploded perspective view of the closure cap, piston portion, etc. on either side of the cable of the present application;
fig. 7 is a schematic structural diagram of the cable body.
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.
Reference numerals are as follows: 1, a cable body; 1.1 a copper conductor; 1.2 an insulating layer; 1.3 an inner flame retardant layer; 1.4 inner protecting layer; 1.5 a shielding layer; 1.6 outer flame retardant layer; 1.7 armor layers; 1.8 outer sheath; 2.1 an upper box body; 2.1.1 sealing the cover plate; 2.1.2 gas storage containers; 2.1.3 electromagnetic valve; 2.1.4 supporting the collar; 2.1.5 vertical plates; 2.2 a lower box body; 2.3 protecting the tube; 2.3.1 air outlet pipe; 2.3.2 second electromagnetic valve; 2.4 second circular flange; 2.5 heat dissipation fins; 2.6 a piston portion; 2.6.1 inserting plates; 2.6.2 cutting knife; 2.6.3 an air bag; 2.6.4 through holes; 2.6.5 transverse reinforcing convex ribs; 2.7 carrying the film; 2.7.1 reinforcing bars; 3.1 end cap; 3.2 a first circular flange; 3.3 abutting the block; 3.4 a circular baffle plate; 9.1 connecting a bracket above the base; 9.2, a bracket is connected below the bracket; 10 wall body.
As shown in fig. 1 to 7, a high-efficiency insulating flame-retardant power cable comprises a cable body 1 and a flame-retardant unit penetrated by the cable body 1, wherein the flame-retardant unit comprises a protective tube 2.3 and end caps 3.1 positioned at two ends of the protective tube 2.3, one end of each end cap 3.1 is open, the other end of each end cap is provided with a through hole penetrated by the cable body 1, the opening of each end cap 3.1 is provided with a first annular flange 3.2, the end cap 3.1 is internally provided with an annular blocking piece 3.4 penetrated by the cable body 1, the inner side wall of each end cap 3.1 is also provided with an abutting block 3.3 abutted against the annular blocking piece 3.4, two ends of the protective tube 2.3 are respectively inserted into the two end caps 3.1 and abut against the annular blocking pieces 3.4 in the two end caps 3.1, the protective tube 2.3 is also provided with two second annular flanges 2.4, the two second annular flanges 2.4 are in one-to one correspondence with the first annular flanges 3.2 of the two end caps 3.1, the corresponding first circular flange 3.2 and the second circular flange 2.4 are fixedly connected; and a flame retardant is filled between one end with a through hole in the end cap 3.1 and the annular baffle 3.4.
A lower box body 2.2 positioned below the protection tube 2.3 and an upper box body 2.1 positioned above the protection tube 2.3 are fixed at the protection tube 2.3, and the outer side wall of the protection tube 2.3 is also provided with a plurality of radiating fins 2.5 positioned between the upper box body 2.1 and the lower box body 2.2; the lower box body 2.2 is fixedly connected with a lower connecting support 9.2, and an upper connecting support 9.1 is fixed at the upper box body 2.1; the top end and the bottom end of the lower box body 2.2 are both open, the top end of the lower box body 2.2 is fixedly connected with the protection tube 2.3, and the inner space of the lower box body 2.2 and the inner space of the protection tube 2.3 are not communicated; the top and the bottom of top box body 2.1 are all uncovered, and protection tube 2.3 department has the bar intercommunicating pore and communicates protection tube 2.3 inner space and top box body 2.1 inner space, top box body 2.1 bottom still is fixed with the uncovered confined apron 2.1.1 in top of top box body 2.1. A rectangular frame-shaped supporting convex edge 2.1.4 is fixed on the inner side wall of the upper box body 2.1, a bearing film 2.7 is fixed at the position of the supporting convex edge 2.1.4, a vertical plate 2.1.5 is also fixed in the upper box body 2.1, two ends of the vertical plate 2.1.5 are fixed with the inner side wall of the upper box body 2.1, the vertical plate 2.1.5 is provided with a through groove penetrating through the top end and the bottom end of the vertical plate 2.1.5, a piston part 2.6 is also arranged in the upper box body 2.1, an inserting plate 2.6.1 capable of being inserted into the through groove is fixed at the position of the piston part 2.6, and a cutter 2.6.2 is arranged at the bottom end of the inserting plate 2.6.1; the lateral wall of the upper box body 2.1 is also fixedly provided with an air storage container 2.1.2 through a mounting frame, the air storage container 2.1.2 is communicated with the space between the piston part 2.6 of the upper box body 2.1 and the sealing cover plate 2.1.1 through a connecting pipe, the connecting pipe is provided with a first electromagnetic valve, and the space between the bearing film 2.7 and the piston part 2.6 in the upper box body 2.1 is filled with fire extinguishing sand. Two cutters 2.6.2 are arranged, cutting edges capable of cutting the bearing film 2.7 are arranged below the cutters 2.6.2, one end of each cutting edge, close to the end cap 3.1, is lower than one end of each cutting edge, far away from the end cap 3.1, and the cutting edges of the two cutters 2.6.2 are distributed in an inverted V shape; two air bags 2.6.3 are arranged below the piston part 2.6, the inserting plate 2.6.1 is positioned between two air bags 2.6.3, each air bag 2.6.3 is positioned between the vertical plate 2.1.5 and one side wall of the upper box body 2.1, a plurality of through holes 2.6.4 penetrating through the top end and the bottom end of the piston part 2.6 are arranged at the piston part 2.6, each air bag 2.6.3 is at least communicated with one through hole 2.6.4, when the air bag 2.6.3 is filled with air, the bottom of the air bag 2.6.3 is arc-shaped, and the middle point of the bottom of the air bag 2.6.3 is positioned at the lowest position of the air bag.
The top end of the piston part 2.6 is provided with a transverse reinforcing convex rib 2.6.5 and a longitudinal reinforcing convex rib; the carrier film 2.7 has a plurality of mutually parallel reinforcing strips 2.7.1. The protection tube 2.3 still is connected with the return bend 2.3.1 of giving vent to anger, the one end that return bend 2.3.1 of giving vent to anger is connected with protection tube 2.3 is located below box body 2.2, the other end of return bend 2.3.1 of giving vent to anger has second solenoid valve 2.3.2, and the other end of return bend 2.3.1 of giving vent to anger is higher than support chimb 2.1.4's upper surface. The air outlet elbow 2.3.1 penetrates through the lower box body 2.2; the return bend 2.3.1 of giving vent to anger has two, two return bends 2.3.1 of giving vent to anger all with strip shaped plate fixed connection, strip shaped plate and top box body 2.1 fixed connection.
As shown in the figure, the cable body of this application has double-deck fire-retardant structure, and is fire-retardant around band and low smoke and zero halogen fire-retardant layer to obtain better flame retardant efficiency, when passing the wall body and installing, the protection tube passes the wall body, and utilize top support and below support with wall body fixed connection. And the end cap is filled with fire extinguishing sand, so that the fire is prevented from spreading along the cable. And when normally using, because the tip cap is shorter, also be hollow structure in the protective tube, and have radiating fin to the heat of cable can normally distribute away. When taking place the condition of a fire, the controller (the controller can with outside smoke transducer linkage) can control first, two solenoid valves and open to high-pressure gas strikes piston portion, and piston portion cuts the carrier film on the one hand, thereby the sand of putting out a fire falls down the realization to the cover of cable (the sand of putting out a fire falls into the protective tube from the box body in top through bar through-hole), avoids the cable to catch fire. The picture peg inserts the setting that the riser leads to the groove (the riser leads to the inslot and does not put out a fire husky) for can not meet with the resistance of putting out a fire husky when the piston descends, thereby can cut the carrier film smoothly fast, and the cutting edge is high on one side low, makes the cutting can be more smooth. And when the piston moved down, the gasbag can be full of gas to as shown in the figure, when the gasbag was full of gas (the gasbag can further extrude the sand of putting out a fire at the in-process of aerifing and fall fast), the centre is low, and both sides are high, thereby will put out a fire sand to both sides extrusion, thereby make the sand of putting out a fire more concentrate to both sides extrusion, be favorable to playing flame retardant efficiency more (because the intensity of a fire spreads from the tip and spread, consequently the sand of putting out a fire is to tip extrusion help fire-retardant). And when the sand of putting out a fire whereabouts, because the second solenoid valve of outlet duct department is opened to the gas originally of the interior of protection tube can discharge fast, conveniently puts out a fire the whereabouts of sand. Therefore, the flame-retardant heat-dissipating material has a good heat-dissipating effect in normal use, can well resist flame when a fire occurs, and has an effective flame-retardant effect.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. An efficient insulation flame-retardant power cable is characterized by comprising a cable body and a flame-retardant unit penetrated by the cable body, the flame-retardant unit comprises a protective tube and end caps positioned at two ends of the protective tube, one end of each end cap is open, the other end of each end cap is provided with a through hole through which the cable body passes, the opening of the end cap is provided with a first circular flange, a circular baffle sheet penetrated by the cable body is arranged in the end cap, the inner side wall of the end cap is also provided with a butt joint block which is butted with the annular separation blade, two ends of the protection tube are respectively inserted into the two end caps, the two second circular-ring-shaped flanges are in one-to-one correspondence with the first circular-ring-shaped flanges of the two end caps, and the corresponding first circular-ring-shaped flanges are fixedly connected with the second circular-ring-shaped flanges; and a flame retardant is filled between one end with a through hole in the end cap and the annular blocking piece.
2. An efficient insulation flame-retardant power cable according to claim 1, wherein the cable body comprises an outer sheath, an armor layer, an outer flame-retardant layer, a shielding layer and an inner sheath layer from outside to inside in sequence, the inner sheath layer comprises a plurality of cable cores, and the cable cores comprise a copper conductor, an insulating layer and an inner flame-retardant layer from inside to outside in sequence.
3. A high efficiency insulated flame retardant power cable according to claim 1, characterized in that the flame retardant is fire extinguishing sand.
4. A high efficiency insulating flame retardant power cable as claimed in claim 2, characterized in that said inner sheath is a polyethylene inner sheath, said inner flame retardant layer is a low smoke zero halogen flame retardant layer, and said outer flame retardant layer is a flame retardant tape layer.
5. The power cable of claim 1, wherein a lower box located below the protection tube and an upper box located above the protection tube are fixed at the protection tube, and the outer sidewall of the protection tube further has a plurality of heat dissipation fins located between the upper box and the lower box; the lower box body is fixedly connected with a lower connecting bracket, and the upper box body is fixedly provided with an upper connecting bracket; the top end and the bottom end of the lower box body are both open, the top end of the lower box body is fixedly connected with the protection tube, and the inner space of the lower box body is not communicated with the inner space of the protection tube; the top and the bottom of top box body are all uncovered, and protection tube department has the bar intercommunicating pore and will protect inside space of tube and the box body space intercommunication in the top, top box body bottom still is fixed with the uncovered confined apron in top box body top.
6. The efficient insulating flame-retardant power cable according to claim 5, wherein a rectangular frame-shaped supporting flange is fixed on the inner side wall of the upper box body, a bearing film is fixed at the supporting flange, a vertical plate is fixed in the upper box body, two ends of the vertical plate are fixed with the inner side wall of the upper box body, the vertical plate is provided with a through groove which penetrates through the top end and the bottom end of the vertical plate, a piston part is further arranged in the upper box body, an inserting plate which can be inserted into the through groove is fixed at the piston part, and a cutter is arranged at the bottom end of the inserting plate; the utility model discloses a fire extinguishing device, including top box body, sealing cover, connecting pipe, bearing film, top box body, mounting bracket, air container, connecting pipe, first solenoid valve, the top box body lateral wall still has air container through mounting bracket fixed mounting, air container passes through the space intercommunication between the piston portion of connecting pipe and top box body and the closing cover, connecting pipe department has first solenoid valve, the space packing that bears in the top box body between film and the piston portion has the sand of putting out a fire.
7. The high-efficiency insulation flame-retardant power cable according to claim 5, wherein the number of the cutting blades is two, the cutting blades are arranged below the cutting blades and can cut the bearing film, one end of each cutting blade close to the end cap is lower than one end of each cutting blade far away from the end cap, and the cutting blades of the two cutting blades are distributed in an inverted V shape; piston portion below has two gasbags, the picture peg is located between two gasbags, and every gasbag is located between one of them lateral wall of riser and top box body, piston portion department has a plurality of through holes that run through piston portion top and bottom, every gasbag at least with one the through hole intercommunication, when the gasbag is full of gas, the bottom of gasbag is the arcwall face form, and the mid point of the bottom of gasbag is in the lowest position of gasbag.
8. The efficient insulated flame retardant power cable according to claim 7, wherein the top end of said piston portion has a transverse reinforcing rib and a longitudinal reinforcing rib; the bearing film is provided with a plurality of mutually parallel reinforcing strips.
9. The efficient insulated flame-retardant power cable according to claim 5, wherein the protection tube is further connected with an air outlet elbow, one end of the air outlet elbow connected with the protection tube is located in the lower box body, the other end of the air outlet elbow is provided with a second electromagnetic valve, and the other end of the air outlet elbow is higher than the upper surface of the support flange.
10. The efficient insulated flame retardant power cable according to claim 8, wherein the outlet elbow passes through the lower box; the return bend of giving vent to anger has two, two return bends of giving vent to anger all with strip shaped plate fixed connection, strip shaped plate and top box body fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254667.9A CN114709021B (en) | 2022-03-15 | 2022-03-15 | Efficient insulating flame-retardant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210254667.9A CN114709021B (en) | 2022-03-15 | 2022-03-15 | Efficient insulating flame-retardant power cable |
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| Publication Number | Publication Date |
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| CN114709021A true CN114709021A (en) | 2022-07-05 |
| CN114709021B CN114709021B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210254667.9A Active CN114709021B (en) | 2022-03-15 | 2022-03-15 | Efficient insulating flame-retardant power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116864206A (en) * | 2023-06-07 | 2023-10-10 | 湖南省阳泰电线电缆有限公司 | High-voltage cable flame-retardant structure and flame-retardant method |
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| US20140301566A1 (en) * | 2013-04-09 | 2014-10-09 | Audix Corporation | Microphone Cable Adaptor and Plenum Seal |
| JP2015142478A (en) * | 2014-01-30 | 2015-08-03 | 昭和電線ケーブルシステム株式会社 | Intermediate connection of protective tube and power cable |
| CN111403090A (en) * | 2020-03-11 | 2020-07-10 | 扬州曙光电缆股份有限公司 | Special cables for the harsh environment of the third-generation nuclear power plant |
| CN214476471U (en) * | 2021-02-08 | 2021-10-22 | 江西广通电缆股份有限公司 | Acid and alkali resistant fireproof cable for steamship |
-
2022
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| JPH10224938A (en) * | 1997-02-05 | 1998-08-21 | Hitachi Cable Ltd | Sheath interrupter |
| US20140301566A1 (en) * | 2013-04-09 | 2014-10-09 | Audix Corporation | Microphone Cable Adaptor and Plenum Seal |
| JP2015142478A (en) * | 2014-01-30 | 2015-08-03 | 昭和電線ケーブルシステム株式会社 | Intermediate connection of protective tube and power cable |
| CN111403090A (en) * | 2020-03-11 | 2020-07-10 | 扬州曙光电缆股份有限公司 | Special cables for the harsh environment of the third-generation nuclear power plant |
| CN214476471U (en) * | 2021-02-08 | 2021-10-22 | 江西广通电缆股份有限公司 | Acid and alkali resistant fireproof cable for steamship |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116864206A (en) * | 2023-06-07 | 2023-10-10 | 湖南省阳泰电线电缆有限公司 | High-voltage cable flame-retardant structure and flame-retardant method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114709021B (en) | 2024-05-10 |
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