Crosslinked polyethylene insulated cable with temperature regulation function
Technical Field
The invention relates to the technical field of crosslinked polyethylene insulated cables, in particular to a crosslinked polyethylene insulated cable with a temperature adjusting function.
Background
The crosslinked polyethylene insulated cable is a cable suitable for the fields of power distribution networks and the like, has the incomparable advantage of PVC insulated cable, and is prepared by converting the cable insulated polyethylene molecules from a linear molecular structure into a main network molecular structure by a chemical method or a physical method, namely, converting thermoplastic polyethylene into thermosetting crosslinked polyethylene, thereby greatly improving the heat resistance and mechanical property of the cable, reducing the contractility of the cable, preventing the cable from being melted after being heated and keeping excellent electrical property.
The existing crosslinked polyethylene insulated cable generally depends on the material characteristics of the cable to resist high temperature and low temperature, and faces to external temperature changes, particularly when the temperature changes are quicker, the existing cable lacks a temperature adjusting means, and the cable is still easy to fatigue, so that the strength of the cable is reduced or the brittleness is increased, and the service life of the cable is reduced.
Disclosure of Invention
The invention provides a crosslinked polyethylene insulated cable with a temperature adjusting function, which is used for solving the problems that in the prior art, the cable is resistant to temperature change only by means of cable materials, and the service life of the cable is shortened due to the lack of a temperature adjusting means.
The technical scheme of the invention is that the crosslinked polyethylene insulated cable with the temperature adjusting function comprises a cable section, wherein the cable section comprises a conductor, an insulating layer, a spacer sleeve and an outer sheath, the insulating layer is wrapped outside the conductor, and a filler is arranged between the spacer sleeve and the insulating layer, and the crosslinked polyethylene insulated cable further comprises:
The insulation layer is wrapped outside the isolation sleeve, and the outer sheath is arranged outside the insulation layer;
The connecting piece, the connecting piece sets up the both ends of cable segment for two the electric connection of cable segment, the connecting piece includes:
the two connecting seats are fixedly connected to two ends of the cable section;
The plug is fixedly arranged on one of the connecting seats and is electrically connected with the conductor;
The socket is fixedly arranged on the other connecting seat, the socket is electrically connected with the conductor, and a jack matched with the plug is formed in the socket;
The mounting, the mounting is used for right the connecting piece is fixed, the mounting includes:
The fixing ring is a splicing mechanism and is detachably connected to the outer parts of the two connecting seats which are mutually stuck;
The fixing rod is fixedly connected to the inner side of the fixing ring, and a fixing hole matched with the fixing rod is formed in the connecting seat;
The temperature adjusting pipe is arranged in the isolation sleeve, filling is arranged between the temperature adjusting pipe and the isolation sleeve, the heat preservation layer is of a hollow structure, and the temperature adjusting pipe is communicated with the heat preservation layer;
The temperature regulating mechanism is used for regulating the temperature of gas input into the heat preservation and the temperature regulating pipe, and comprises:
A blower;
the temperature adjusting box is internally provided with a temperature adjuster, an air outlet of the fan is communicated with the temperature adjusting box, and the temperature adjusting box is communicated with the heat preservation layer.
For realizing the incubator with the intercommunication of heat preservation, the solid fixed ring intercommunication has the intake pipe, the intake pipe can be dismantled and be connected with the shutoff, the dead lever is hollow structure, the heat preservation intercommunication has the connecting pipe, offered on the connecting seat with the holding tank that the connecting pipe matches, the solid fixed ring passes through the dead lever with the connecting pipe intercommunication.
Preferably, the fixing ring comprises two connecting semi-rings, the two connecting semi-rings are detachably connected through bolts, and the end parts of the connecting semi-rings are fixedly connected with sealing rings.
In order to improve the intensity of heat preservation, the inside fixedly connected with of heat preservation has a plurality of backup pads, the through-hole has been seted up in the backup pad.
The working principle and the beneficial effects of the invention are as follows:
According to the invention, the temperature of air in the temperature adjusting box is adjusted through the temperature adjuster, the temperature in the cable is adjusted by sending the air after temperature adjustment into the heat insulation layer and the temperature adjusting pipe through the fan, so that the cable is in a relatively stable temperature environment, the influence of temperature change on the strength of the cable is reduced, the service life of the cable is ensured, when the cable is damaged, the cable section can be conveniently disassembled and assembled through the connecting seat and the fixing ring, the specific damaged position can be replaced, and the use cost, particularly the replacement cost of the cable is reduced.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic illustration of the connection of multiple cable segments according to the present invention;
FIG. 3 is a schematic plan view of a cross-section of a cable segment of the present invention;
FIG. 4 is a schematic illustration of the connection of two cable segments according to the present invention;
FIG. 5 is a schematic exploded view in partial cross-section of a cable segment and connector of the present invention;
FIG. 6 is an exploded schematic view of the cable segment and connector of the present invention;
FIG. 7 is a schematic view of the structure of the connecting tube, the connecting seat and the plug according to the present invention;
FIG. 8 is a schematic view of the structure of the connecting tube, the connecting base and the socket according to the present invention;
FIG. 9 is a schematic view of the structure of the air inlet pipe, the blocking and the fixing member of the present invention;
FIG. 10 is a schematic view of the structure of the air inlet pipe, the blocking, the connecting piece and the fixing piece of the invention;
fig. 11 is a schematic view of a partially enlarged structure at a in fig. 6 according to the present invention.
In the figure:
1. a heat preservation layer; 2, a supporting plate, 3, a temperature regulating pipe, 4, a communicating pipe, 5, an air supply pipe, 6, an air inlet pipe, 7, a plug, 8 and a connecting pipe;
101. 102, an insulating layer, 103, a spacer sleeve, 104, an outer sheath, 105 and filling;
201. 202, plug, 203, socket;
301. Fixing rod 302, connecting semi-rings 303, sealing rings 304, connecting plates 305 and bolts;
401. fan, 402, temperature regulating box, 403, temperature regulator.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 11, this embodiment provides a crosslinked polyethylene insulated cable with temperature regulation function, which comprises a cable segment, wherein the cable segment comprises a conductor 101, an insulating layer 102, a spacer 103 and an outer sheath 104, the conductor 101 and the insulating layer 102 are respectively provided with a plurality of layers, the conductor 101 and the insulating layer 102 are in one-to-one correspondence, the insulating layer 102 is wrapped outside the conductor 101, a filling 105 is arranged between the spacer 103 and the insulating layer 102, and the crosslinked polyethylene insulated cable further comprises a heat insulation layer 1, a connecting piece, a fixing piece, a temperature regulating pipe 3 and a temperature regulating mechanism.
As shown in fig. 3 and 11, the insulation layer 1 wraps up in the outside of spacer 103, the oversheath 104 includes in the outside of insulation layer 1, insulation layer 1 is hollow structure, for improving the intensity of insulation layer 1, a plurality of backup pads 2 of inside fixedly connected with of insulation layer 1, the through-hole has been seted up on backup pad 2, carry constant temperature air to the inside of insulation layer 1, keep warm cable inside and oversheath 104, reduce the tired and the deformation of cable that external temperature changes caused, guarantee the life of cable, support insulation layer 1 and oversheath 104 through backup pad 2, guarantee the circularity of cable.
As shown in fig. 5 to 8, the connecting piece is disposed at two ends of the cable section and is used for electrical connection of two cable sections, the connecting piece comprises two connecting seats 201, a plug 202 and a socket 203, the two connecting seats 201 are disposed at two ends of the cable section, the plug 202 is fixedly mounted on one connecting seat 201, the plug 202 is electrically connected with the conductor 101, the socket 203 is fixedly mounted on the other connecting seat 201, the socket 203 is electrically connected with the conductor 101, a jack matched with the plug 202 is disposed on the socket 203, the two cable sections are abutted, the plug 202 and the socket 203 are mutually spliced, the plug 202 and the socket 203 are made of metal conductive materials, the connecting seats 201 are made of insulating materials, the plug 202 and the socket 203 are in contact with two ends of the conductor 101, electrical connection between the cable sections can be achieved, current passes through the conductors 101, the plug 202 is inserted into the jack, the two connecting seats 201 are mutually tightly adhered, and the connection positions are sealed and protected.
As shown in fig. 9 to 10, the fixing piece is used for fixing the connecting piece, the fixing piece includes a fixing ring and a fixing rod 301, the fixing ring is a splicing mechanism, the fixing ring is detachably connected to the outside of two connecting seats 201 which are mutually attached, the fixing rod 301 is fixedly connected to the inner side of the fixing ring, fixing holes matched with the fixing rod 301 are formed in the connecting seats 201, the fixing ring includes two connecting semi-rings 302, the two connecting semi-rings 302 are detachably connected through bolts 305, a sealing ring 303 is fixedly connected to the end part of each connecting semi-ring 302, a connecting plate 304 is fixedly connected to the end part of each connecting semi-ring 304, a connecting hole for the bolts 305 to pass through is formed in each connecting plate 304, the two connecting semi-rings 302 can be spliced into a circular fixing ring through the bolts 305, the fixing rod 301 is inserted into the inside of the fixing holes, the two connecting seats 201 can be stably connected, and the connection stability of two cable sections is ensured.
As shown in fig. 3 to 5, the temperature adjusting tube 3 is disposed inside the isolation sleeve 103, the packing 105 is disposed between the temperature adjusting tube 3 and the isolation sleeve 103, the insulation layer 1 is of a hollow structure, the temperature adjusting tube 3 is communicated with the insulation layer 1, the temperature adjusting tube 3 is provided with a plurality of temperature adjusting tubes 3, the temperature adjusting tubes 3 are communicated through the communicating tube 4, the temperature adjusting tubes 3 are communicated with the insulation layer 1 through the air supplying tube 5, constant temperature air in the insulation layer 1 can enter the inside of the temperature adjusting tubes 3, and the packing 105, the insulation layer 102, the conductor 101 and the like are subjected to temperature adjustment, namely, the inside of the cable is subjected to temperature adjustment, so that the stability of the whole temperature of the cable is ensured.
As shown in fig. 1, the temperature adjusting mechanism is used for adjusting the temperature of the gas input into the heat insulation layer 1 and the temperature adjusting pipe 3, the temperature adjusting mechanism comprises a fan 401 and a temperature adjusting box 402, a temperature adjuster 403 is installed in the temperature adjusting box 402, an air outlet of the fan 401 is communicated with the temperature adjusting box 402, the temperature adjusting box 402 is communicated with the heat insulation layer 1, a temperature sensor can be installed in the filling 105, the temperature in a cable is monitored through the temperature sensor, when the temperature is lower than or higher than a set temperature, the temperature adjuster 403 and the fan 401 are started, the fan 401 sends air into the temperature adjusting box 402, the temperature of the air in the temperature adjusting box 402 is adjusted, constant temperature air is blown into the heat insulation layer 1 and the temperature adjusting pipe 3, the temperature in the protective sleeve, namely the temperature at the conductor 101, is adjusted through the temperature adjusting pipe 3, the cable is insulated through the heat insulation layer 1, meanwhile, the temperature adjustment is performed on the outer jacket 104, the whole cable is in a relatively stable temperature environment, and damage caused by temperature change of the cable is reduced.
For realizing the intercommunication of temperature regulating box 402 and heat preservation 1, the solid fixed ring intercommunication has intake pipe 6, intake pipe 6 can dismantle and be connected with shutoff 7, dead lever 301 is hollow structure, heat preservation 1 intercommunication has connecting pipe 8, offer the holding tank that matches with connecting pipe 8 on the connecting seat 201, gu fixed ring passes through dead lever 301 and connecting pipe 8 intercommunication, with temperature regulating box 402 and intake pipe 6 intercommunication, the inside of gu the air that temperature regulating has been adjusted in the temperature regulating box 402 is sent into to the solid fixed ring through intake pipe 6, then send into the inside of connecting pipe 8 and heat preservation 1 through dead lever 301, make the air be full of heat preservation 1 and temperature regulating pipe 3 through air pipe 5 and communicating pipe 4, regulate and control the temperature of cable, connect the back to multistage cable section, make a plurality of heat preservation 1 intercommunication through connecting pipe 8, with one of them intake pipe 6 and temperature regulating box 402 intercommunication can, other intake pipe 6 pass through shutoff 7 and seal, avoid the air leakage and outside air's entering, still can open an intake pipe 6 in one side of keeping away from temperature regulating box 402, make constant temperature air be full of heat preservation 1 and temperature regulating pipe 3 follow this intake pipe 6 discharge, guarantee constant temperature air's circulation efficiency, further improve the cable temperature regulating efficiency.
The working principle or the using flow of the crosslinked polyethylene insulated cable with the temperature adjusting function is as follows:
Selecting a proper number of cable sections according to the use requirement, inserting a plug 202 into the jack to connect two adjacent cable sections, inserting a fixing rod 301 into the fixing hole to enable two connecting semi-rings 302 to be tightly attached, splicing the two connecting semi-rings 302 into a whole ring by bolts 305 to be sleeved outside the two connecting seats 201, and connecting the two connecting seats 201;
One of the air inlet pipes 6 is communicated with the temperature regulating box 402, the temperature sensor monitors the temperature in the cable, when the temperature is higher than or lower than the set temperature, the temperature regulator 403 is controlled to heat or cool air in the temperature regulating box 402, the fan 401 blows the air after temperature regulation to the inside of the connecting semi-ring 302, the air is sent into the inside of the heat insulation layer 1 through the fixing rod 301 and the connecting pipe 8, the air enters the temperature regulating pipe 3 through the air supply pipe 5 and the connecting pipe 4, the cable is in a relatively stable temperature environment, and fatigue damage of the cable in temperature change is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.