CN115995309B - High-temperature-resistant flame-retardant photovoltaic cable - Google Patents
High-temperature-resistant flame-retardant photovoltaic cable Download PDFInfo
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- CN115995309B CN115995309B CN202310289338.2A CN202310289338A CN115995309B CN 115995309 B CN115995309 B CN 115995309B CN 202310289338 A CN202310289338 A CN 202310289338A CN 115995309 B CN115995309 B CN 115995309B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a high-temperature-resistant flame-retardant photovoltaic cable, which belongs to the field of photovoltaic cables and comprises a wire body; further comprises: the connecting mechanism comprises a first heat-insulating cover and a second heat-insulating cover which are symmetrically and fixedly sleeved at two ends of the wire body, the first heat-insulating cover and the second heat-insulating cover are respectively provided with a cavity, and the wire body penetrates through the cavities. Can be under the effect of inner heat preservation cover, sealing washer, collar, after the line body both ends are accomplished and are connected, under the effect of thread bush, first heat preservation cover is together fixed with the second heat preservation cover, then the collar drives the sealing washer of heat preservation material and gets into in the space between inner heat preservation cover outer wall and the second heat preservation cover inner wall, and the sealing washer is filled this space, prevent the space intercommunication that forms between this space and first heat preservation cover and the second heat preservation cover, the probability that the heat transfer formed to first heat preservation cover and second heat preservation cover has been reduced, the effect that prevents the line body and connect department high temperature has been played.
Description
Technical Field
The invention relates to the field of photovoltaic cables, in particular to a high-temperature-resistant flame-retardant photovoltaic cable.
Background
In recent years, development of solar energy shows well spraying development, and photovoltaic power generation has driven rapid development of related products such as photovoltaic cables; usually, low-voltage direct current generated by photovoltaic power generation needs to be converted into alternating current, and a connecting cable between the photovoltaic cell and the alternating current-direct current inverter is a photovoltaic cable; the application environments of the photovoltaic cables are different, so that the laying places are considered in design, such as the aging of the photovoltaic cables caused by high-temperature insolation is prevented;
in the installation process, the cable is limited by the photovoltaic power generation equipment and the installation of the field, and the single-end length of the cable is often insufficient to complete the connection and installation between two or even more photovoltaic power generation equipment, so that the splicing of the photovoltaic cable is required, and the splicing is carried out by adopting insulating adhesive tapes for separation and rolling and then multi-layer bundling; at the moment, the insulation layer outside the cable is disconnected, so that the high temperature resistance, the water resistance and the corrosion resistance of the cable are all weak fault at the continuous joint, and the high temperature resistance effect of the whole cable is easily affected; and in the power-on process of the cable, the magnetic effect of the current can know that a magnetic field is generated around the cable, at the moment, under the combined action of the magnetic field of the cable and the geomagnetic field, the cable shakes, in the shaking process, cracks are easily caused at the wrapping part of the insulating adhesive tape, along with the increase of the shaking frequency, the cracks at the wrapping part of the insulating adhesive tape are gradually enlarged, so that the high temperature resistance effect of the cable is further reduced.
For this purpose, a high temperature resistant flame retardant photovoltaic cable is proposed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a high-temperature-resistant flame-retardant photovoltaic cable, which can maintain the high-temperature-resistant effect of the splicing part of the cable when the cable is spliced.
In order to solve the problems, the invention adopts the following technical scheme.
A high-temperature-resistant flame-retardant photovoltaic cable comprises a wire body;
further comprises:
the connecting mechanism comprises a first heat-insulating cover and a second heat-insulating cover which are symmetrically and fixedly sleeved at two ends of the wire body, the first heat-insulating cover and the second heat-insulating cover are respectively provided with a cavity, the wire body penetrates through the cavities, the side wall of one end of the first heat-insulating cover far away from the wire body is provided with threads, the second heat-insulating cover is movably sleeved with a thread sleeve matched with the threads, and the thread sleeve is made of heat-insulating materials; when the cable is connected, one ends of the two adjacent wire bodies are electrically connected together, then the first heat-preserving cover and the second heat-preserving cover are aligned, and the threaded sleeve is rotated, so that the threaded sleeve on the second heat-preserving cover can be moved to the first heat-preserving cover Wen Zhaoshang, and the first heat-preserving cover and the second heat-preserving cover can be fixed together at the moment;
the sealing mechanism comprises an inner heat-preserving cover fixedly arranged on the inner wall of the first heat-preserving cover, the inner heat-preserving cover is sleeved outside the wire body, a mounting ring which is in sliding fit with the wire body is slidably arranged in the second heat-preserving cover, a sealing ring made of heat-preserving materials is fixedly arranged on the side wall of the mounting ring, which is close to one side of the first heat-preserving cover, and the sealing ring is matched with a gap between the outer wall of the inner heat-preserving cover and the inner wall of the first heat-preserving cover; after the first heat preservation cover and the second heat preservation cover are connected together by the threaded sleeve, the installation ring moves the sealing ring to be inserted into the space between the inner wall of the first heat preservation cover and the outer wall of the inner heat preservation cover;
the first driving mechanism comprises a jack arranged on the inner side wall of the second heat preservation cover, a mounting rod is slidably mounted in the jack, a spring is fixedly mounted between one end of the mounting rod, which is far away from the mounting ring, and the jack, a magnetic stripe is fixedly embedded in the mounting rod, a lug with a right trapezoid cross section is fixedly mounted on the side wall, which is far away from the sealing ring, of the mounting ring, and the top wall of the lug is an inclined plane; the magnetic effect of the current shows that at the moment of the electrification of the wire body, a magnetic field which is mutually attracted with the magnetic strip is generated around the wire body, the attraction force of the magnetic strip is larger than the elastic force of the spring, the installation rod extends out of the jack, and the installation rod exerts thrust on the inclined plane on the convex block, so that the installation ring moves towards the direction of the first heat preservation cover;
the pressurizing mechanism comprises a transverse groove formed in the side wall of the mounting rod, a push rod is slidably mounted in the transverse groove, a vertical hole with the bottom end communicated with the transverse groove is formed in the top wall of the mounting rod, a pressurizing cavity is formed in the second heat-preserving cover, a first magnetic plate is horizontally and dynamically mounted in the pressurizing cavity, and a second driving mechanism matched with the first magnetic plate is arranged on the second heat-preserving cover; when the temperature of the outside rises, the first magnetic plate moves towards the direction close to the jack, the pressure in the jack and the transverse groove is increased, the ejector rod stretches out of the transverse groove and applies thrust to the side wall of the lug, and therefore the sealing ring can be attached to the outer wall of the inner heat-preserving cover and the inner wall of the second heat-preserving cover more tightly.
Further, the second driving mechanism comprises a first cavity horizontally arranged on the second heat insulation cover, a second magnetic plate which is mutually exclusive with the first magnetic plate is slidably arranged in the first cavity, a heat conduction rod with the top end extending to the surface of the second heat insulation cover is fixedly inserted into the side wall of one side, away from the pressurizing cavity, of the first cavity, and ammonia is filled in a space, located on one side, away from the pressurizing cavity, of the second magnetic plate in the first cavity.
Further, the inner side wall of the second heat preservation cover is fixedly provided with a heat preservation ring, the heat preservation ring is matched with the sealing ring, and the inner side wall of the heat preservation ring and the outer wall of the inner heat preservation cover are inclined planes.
Further, an elastic air bag is fixedly arranged on the side wall of the sealing ring, which is far away from one side of the mounting ring, and the output end of the elastic air bag is matched with the inner heat insulation cover and the heat insulation ring.
Further, a pressure release cavity is formed in the first protection Wen Zhaoshang, a mounting opening communicated with the pressure release cavity is formed in a position, located on the surface of the inner heat preservation cover, on the inner wall of the first heat preservation cover, and a first elastic membrane is fixedly mounted in the mounting opening.
Further, the mounting groove is formed in the outer wall of the first heat preservation cover, the mounting plate is slidably mounted in the mounting groove, the spoiler is uniformly and fixedly mounted on the side wall of the mounting plate, the first permanent magnet is uniformly mounted on the mounting plate, and the first protector Wen Zhaoshang is provided with a third driving mechanism matched with the mounting plate.
Further, the third driving mechanism comprises a second cavity formed in the first cavity Wen Zhaoshang, the second cavity is annular, an annular plate is rotationally arranged in the second cavity, tooth grooves are uniformly formed in the side wall, close to one side of the pressure relief cavity, of the annular plate, an air supply hole communicated with the second cavity is formed in the side wall of the pressure relief cavity, and a second permanent magnet which is mutually attracted with the first permanent magnet is uniformly and fixedly arranged on the side wall of the annular plate.
Further, a sleeve with an input end extending into the second cavity is fixedly arranged in the pressure release cavity, and a second elastic membrane is fixedly arranged in the sleeve.
Further, the ratio of the elastic coefficient of the second elastic film to the elastic coefficient of the first elastic film is 1:2.
further, the side wall of the mounting plate is uniformly and movably embedded with balls, and the surface of each ball is a mirror surface.
Compared with the prior art, the invention has the beneficial effects that:
(1) After the effect of heat preservation cover, sealing washer, collar in this scheme is accomplished at line body both ends and is connect the back, under the effect of thread bush, first heat preservation cover is together fixed with the second heat preservation cover, then the collar drives in the sealing washer that keeps warm the material gets into the space between heat preservation cover outer wall and the second heat preservation cover inner wall, and the sealing washer fills this space, prevent the space intercommunication that forms between this space and first heat preservation cover and the second heat preservation cover, the probability that the heat transfer formed to first heat preservation cover and second heat preservation cover has been reduced, the effect that prevents the line body and connect the department high temperature has been played.
(2) This scheme is under the effect of heat preservation circle, because the inside wall of heat preservation circle is the inclined plane with the outer wall of interior heat preservation cover, consequently at the in-process of follow-up connector, when impurity dropped the surface of heat preservation circle inner wall and interior heat preservation cover outer wall, impurity will slide along the inclined plane to ensure that interior heat preservation cover outer wall and heat preservation circle inner wall all are in smooth state, at the in-process that the sealing washer presss from both sides in between heat preservation cover and the heat preservation circle, reduced the frictional force that the sealing washer received, thereby prevent sealing washer surface wear, ensure that the sealing washer can closely laminate with interior heat preservation cover and the heat preservation circle, played the effect of improving the heat preservation effect.
(3) Under the action of the pressure release cavity and the first elastic membrane, when the outside air temperature is too high, and the outside heat is transferred to the space among the inner wall of the first heat preservation cover, the inner wall of the second heat preservation cover and the outer wall of the inner heat preservation cover through the gaps among the first heat preservation cover, the second heat preservation cover and the threaded sleeve, the gas in the space is heated and expanded, and the air pressure in the space is increased at the moment; because the elasticity of first elastic membrane is less than the appeal between magnetic stripe and the line body, consequently under the effect of atmospheric pressure, first elastic membrane is to the inflation in the pressure release chamber to reduced the atmospheric pressure that inserts the sealing washer between heat preservation circle and the interior heat preservation cover received, in order to reduce the thrust that the heat preservation circle received, played the effect of guaranteeing that the sealing washer can be closely laminated with heat preservation circle and interior heat preservation cover outer wall all the time.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a first cross-sectional view of the present invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 2;
FIG. 4 is an enlarged view of the invention at B in FIG. 2;
FIG. 5 is a second cross-sectional schematic view of the present invention;
FIG. 6 is a top cross-sectional view of a first thermal shield of the present invention;
FIG. 7 is a combination view of the invention with a spoiler and an annular plate.
The reference numerals in the figures illustrate:
1. a wire body; 2. a first heat-retaining cover; 3. a second heat-insulating cover; 4. a thread sleeve; 5. an inner heat-insulating cover; 6. a mounting ring; 7. a seal ring; 8. a mounting rod; 9. a spring; 10. a magnetic stripe; 11. a bump; 12. a push rod; 13. a first magnetic plate; 14. a second magnetic plate; 15. a heat conduction rod; 16. a heat preservation ring; 17. an elastic air bag; 18. a pressure relief cavity; 19. a first elastic film; 20. a mounting plate; 21. a spoiler; 22. a first permanent magnet; 23. an annular plate; 24. a second permanent magnet; 25. a sleeve; 26. a second elastic film; 27. and (3) rolling balls.
Description of the embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Examples
Referring to fig. 1 to 7, a high temperature resistant and flame retardant photovoltaic cable comprises a wire body 1;
further comprises:
the connecting mechanism comprises a first heat-insulating cover 2 and a second heat-insulating cover 3 which are symmetrically and fixedly sleeved at two ends of the wire body 1, cavities are formed in the first heat-insulating cover 2 and the second heat-insulating cover 3, the wire body 1 penetrates through the cavities, threads are formed in the side wall of one end, far away from the wire body 1, of the first heat-insulating cover 2, a thread sleeve 4 matched with the threads is movably sleeved on the second heat-insulating cover 3, and the thread sleeve 4 is made of heat-insulating materials; when the cable is connected, one ends of the two wire bodies 1 adjacent to each other are electrically connected together, then the first heat preservation cover 2 and the second heat preservation cover 3 are aligned, and the threaded sleeve 4 is rotated, so that the threaded sleeve 4 on the second heat preservation cover 3 can be moved to the first heat preservation cover 2, and the first heat preservation cover 2 and the second heat preservation cover 3 can be fixed together at the moment;
the sealing mechanism comprises an inner heat-preserving cover 5 fixedly arranged on the inner wall of the first heat-preserving cover 2, the inner heat-preserving cover 5 is sleeved outside the wire body 1, a mounting ring 6 which is in sliding fit with the wire body 1 is slidably arranged in the second heat-preserving cover 3, a sealing ring 7 made of heat-preserving materials is fixedly arranged on the side wall of the mounting ring 6, which is close to one side of the first heat-preserving cover 2, and the sealing ring 7 is matched with a gap between the outer wall of the inner heat-preserving cover 5 and the inner wall of the first heat-preserving cover 2; after the first heat preservation cover 2 and the second heat preservation cover 3 are connected together by the threaded sleeve 4, the mounting ring 6 drives the sealing ring 7 to be inserted into a space between the inner wall of the first heat preservation cover 2 and the outer wall of the inner heat preservation cover 5;
the first driving mechanism comprises a jack arranged on the inner side wall of the second heat preservation cover 3, a mounting rod 8 is slidably mounted in the jack, a spring 9 is fixedly mounted between one end of the mounting rod 8 far away from the mounting ring 6 and the jack, a magnetic stripe 10 is fixedly embedded on the mounting rod 8, a lug 11 with a right trapezoid cross section is fixedly mounted on the side wall of the mounting ring 6 far away from one side of the sealing ring 7, and the top wall of the lug 11 is an inclined plane; as can be seen from the magnetic effect of the current, when the wire body 1 is electrified, a magnetic field which is mutually attracted with the magnetic stripe 10 is generated around the wire body 1, at the moment, the attractive force born by the magnetic stripe 10 is larger than the elastic force of the spring 9, the mounting rod 8 extends out of the jack, and the mounting rod 8 applies thrust to the inclined plane on the lug 11, so that the mounting ring 6 moves towards the first heat preservation cover 2;
the pressurizing mechanism comprises a transverse groove formed in the side wall of the mounting rod 8, a push rod 12 is slidably mounted in the transverse groove, a vertical hole with the bottom end communicated with the transverse groove is formed in the top wall of the mounting rod 8, a pressurizing cavity is formed in the second heat preservation cover 3, a first magnetic plate 13 is horizontally mounted in the pressurizing cavity in a sliding mode, and a second driving mechanism matched with the first magnetic plate 13 is arranged on the second heat preservation cover 3; when the temperature of the outside rises, the first magnetic plate 13 moves towards the direction close to the jack, the pressure in the jack and the transverse groove is increased, the ejector rod 12 stretches out of the transverse groove and applies thrust to the side wall of the protruding block 11, namely the sealing ring 7 can be attached to the outer wall of the inner heat-preserving cover 5 and the inner wall of the second heat-preserving cover 3 more tightly.
The second driving mechanism comprises a first cavity horizontally arranged on the second heat insulation cover 3, a second magnetic plate 14 which is mutually exclusive with the first magnetic plate 13 is slidably arranged in the first cavity, a heat conduction rod 15 with the top end extending to the surface of the second heat insulation cover 3 is fixedly inserted into the side wall of the first cavity away from the pressurizing cavity, and ammonia is filled in a space of the first cavity, which is positioned on the side of the second magnetic plate 14 away from the pressurizing cavity.
When the cable length is insufficient and the cable needs to be spliced, firstly, the adjacent ends of the two wire bodies 1 are electrically connected together, then the first heat preservation cover 2 and the second heat preservation cover 3 are aligned, the threaded sleeve 4 on the second heat preservation cover 3 is rotated, so that the threaded sleeve 4 on the second heat preservation cover 3 can be moved to the first heat preservation cover 2, at the moment, the first heat preservation cover 2 and the second heat preservation cover 3 can be tightly attached together, after the cable is laid, the wire bodies 1 are electrified, the magnetic effect of current can know that the wire bodies 1 are electrified instantly, a magnetic field which is mutually attracted with the magnetic strips 10 is generated around the wire bodies 1, at the moment, the attraction force of the magnetic strips 10 is larger than the elastic force of the springs 9, the mounting rods 8 extend out of the jacks, and the end of the mounting rods 8 extending out of the jacks exert thrust on the inclined surfaces on the lugs 11, the thrust decomposes along inclined plane direction and horizontal direction, under the effect of horizontal direction branch power, collar 6 drives sealing washer 7 to be moved towards the direction that is close to first heat preservation cover 2, and sealing washer 7 gets into the space that forms between the inside and interior heat preservation cover 5 outer wall of second heat preservation cover 3 gradually, and under the effect of installation pole 8 thrust, sealing washer 7 closely laminates with the inner wall of second heat preservation cover 3 and the outer wall of interior heat preservation cover 5, because first heat preservation cover 2, second heat preservation cover 3, thread bush 4, interior heat preservation cover 5, sealing washer 7 are the heat preservation material, therefore in hot summer, the heat that external transmission was given line body 1 continuation department to has reduced, line body 1 continuation department because of the high probability of damage takes place in the high temperature, the effect of guaranteeing that the cable keeps certain high temperature resistant effect has been played.
After the mounting rod 8 extends out of the jack, the ejector rod 12 in the transverse groove on the side wall of the mounting rod 8 is contacted with the inclined plane of the protruding block 11; when the external temperature rises, under the action of the heat conducting rod 15, the temperature in the first cavity rises, ammonia in the first cavity is heated and expanded at the moment, the expanded ammonia pushes the second magnetic plate 14 to move along the first cavity, namely, the second magnetic plate 14 gradually approaches the pressurizing cavity, at the moment, under the action of the repulsive force between the first magnetic plate 13 and the second magnetic plate 14, the first magnetic plate 13 moves towards the direction approaching the jack, so that gas in the pressurizing cavity enters the jack, under the action of the vertical hole, the pressure in the transverse groove increases, the ejector rod 12 has a trend of stretching out from the transverse groove, and the ejector rod 12 applies the thrust in the horizontal direction to the lug 11, at the moment, the degree of adhesion between the sealing ring 7 and the outer wall of the inner heat insulation cover 5 and the inner wall of the second heat insulation cover 3 is further improved under the action of the thrust of the ejector rod 12, namely, when the external environment is in a high-temperature state, the heat insulation effect is further improved, and the probability that the external heat is transferred to the joints of two adjacent wire bodies 1 is further reduced.
As shown in fig. 2, 3 and 4, the inner side wall of the second heat insulation cover 3 is fixedly provided with a heat insulation ring 16, the heat insulation ring 16 is matched with the sealing ring 7, and the inner side wall of the heat insulation ring 16 and the outer wall of the inner heat insulation cover 5 are inclined planes.
By adopting the technical scheme, as the heat preservation ring 16 is arranged on the inner wall of the second heat preservation cover 3, when the sealing ring 7 enters the space between the inner wall of the second heat preservation cover 3 and the outer wall of the inner heat preservation cover 5, the sealing ring 7 is clamped into the space between the inner heat preservation cover 5 and the heat preservation ring 16, so that the space between the outer wall of the inner heat preservation cover 5 and the inner wall of the second heat preservation cover 3 is filled through the sealing ring 7 and the heat preservation ring 16; photovoltaic cables are usually installed outdoors, and in windy weather, dust such as gravel on the ground is blown up and drifts with the wind; because the inside wall of heat preservation circle 16 and the outer wall of interior heat preservation cover 5 are the inclined plane, consequently at the in-process of continuing connector 1, when impurity dropped the surface of heat preservation circle 16 inner wall and interior heat preservation cover 5 outer wall, impurity will slide along the inclined plane to ensure that interior heat preservation cover 5 outer wall and heat preservation circle 16 inner wall all are in smooth state, the in-process between seal circle 7 clamp interior heat preservation cover 5 and heat preservation circle 16 has reduced the frictional force that seal circle 7 received, thereby prevent that seal circle 7 surface wear, ensure that seal circle 7 can closely laminate with interior heat preservation cover 5 and heat preservation circle 16, played the effect that improves the heat preservation effect.
As shown in fig. 3, an elastic air bag 17 is fixedly arranged on the side wall of the sealing ring 7, which is far away from the side of the mounting ring 6, and the output end of the elastic air bag 17 is matched with the inner heat insulation cover 5 and the heat insulation ring 16.
By adopting the technical scheme, in the process that the mounting ring 6 drives the sealing ring 7 to be inserted into the gap between the outer wall of the inner heat preservation cover 5 and the heat preservation ring 16, the elastic air bag 17 firstly enters the gap, and in the process, the elastic air bag 17 moves along the outer wall of the inner heat preservation cover 5 and the inner wall of the heat preservation ring 16, so that dust attached to the outer wall of the inner heat preservation cover 5 and the inner wall of the heat preservation ring 16 can be pushed, and the effect of improving the cleaning effect on the outer wall of the inner heat preservation cover 5 and the inner wall of the heat preservation ring 16 is achieved; and the space between the outer wall of the inner heat preservation cover 5 and the inner wall of the heat preservation ring 16 is gradually reduced, so that the elastic air bag 17 is extruded in the moving process of the elastic air bag 17, and gas in the elastic air bag 17 is discharged through the output end of the elastic air bag 17 at the moment, so that solid impurities with larger volume attached to the surface of the inclined plane can be blown away, and therefore the elastic air bag 17 can be prevented from driving the impurities to slide along the inclined plane in the moving process of the elastic air bag 17 along the inclined plane, the inclined plane is prevented from being scratched, and the sealing ring 7 can be tightly attached to the inner heat preservation cover 5 and the heat preservation ring 16.
As shown in fig. 2, the first heat-preserving cover 2 is provided with a pressure release cavity 18, a part on the inner wall of the first heat-preserving cover 2, which is positioned on the surface of the inner heat-preserving cover 5, is provided with a mounting opening communicated with the pressure release cavity 18, and a first elastic membrane 19 is fixedly mounted in the mounting opening.
By adopting the technical scheme, when the outside air temperature is too high, and the outside heat is transferred to the space between the inner wall of the first heat preservation cover 2, the inner wall of the second heat preservation cover 3 and the outer wall of the inner heat preservation cover 5 through the gaps among the first heat preservation cover 2, the second heat preservation cover 3 and the thread sleeve 4, the gas in the space is heated and expanded, and the air pressure in the space is increased at the moment; because the elasticity of the first elastic film 19 is smaller than the attractive force between the magnetic stripe 10 and the wire body 1, under the action of air pressure, the first elastic film 19 expands towards the pressure release cavity 18, so that the air pressure born by the sealing ring 7 inserted between the heat preservation ring 16 and the inner heat preservation cover 5 is reduced, namely the thrust born by the heat preservation ring 16 is reduced, and the effect of ensuring that the sealing ring 7 can be tightly attached to the outer walls of the heat preservation ring 16 and the inner heat preservation cover 5 all the time is achieved; in addition, in the process of inserting the sealing ring 7 into the gap between the heat preservation ring 16 and the inner heat preservation cover 5, the first elastic membrane 19 can expand towards the pressure release cavity 18, so that the resistance of the sealing ring 7 is reduced, and the function of ensuring that the sealing ring 7 can be normally inserted is achieved.
As shown in fig. 1, 2 and 7, an installation groove is formed in the outer wall of the first heat-preserving cover 2, an installation plate 20 is slidably installed in the installation groove, a spoiler 21 is uniformly and fixedly installed on the side wall of the installation plate 20, a first permanent magnet 22 is uniformly installed on the installation plate 20, and a third driving mechanism matched with the installation plate 20 is arranged on the first heat-preserving cover 2.
The third driving mechanism comprises a second cavity formed in the first heat-preserving cover 2, the second cavity is annular, an annular plate 23 is rotationally arranged in the second cavity, tooth grooves are uniformly formed in the side wall, close to the pressure release cavity 18, of the annular plate 23, air supply holes communicated with the second cavity are formed in the side wall of the pressure release cavity 18, and a second permanent magnet 24 which is attracted with the first permanent magnet 22 is uniformly and fixedly arranged on the side wall of the annular plate 23.
A sleeve 25 with an input end extending into the second cavity is fixedly arranged in the pressure release cavity 18, and a second elastic membrane 26 is fixedly arranged in the sleeve 25.
The ratio of the elastic coefficient of the second elastic film 26 to that of the first elastic film 19 is 1:2.
through adopting above-mentioned technical scheme, in the in-process of first elastic membrane 19 inflation, the gas in the pressure release chamber 18 flows to the second cavity through the air supply hole, exhaust gas in the air supply hole strikes the lateral wall of tooth's socket this moment, annular slab 23 drives second permanent magnet 24 rotation under the effect of air current impact force, because first permanent magnet 22 and second permanent magnet 24 attraction each other, therefore second permanent magnet 24 pivoted in-process will drive first permanent magnet 22 and mounting panel 20 rotation, thereby can drive spoiler 21 through mounting panel 20 and rotate, pivoted spoiler 21 drives the air around first heat preservation cover 2 and the second heat preservation cover 3 and flows, thereby can shift the lower gaseous roof of first heat preservation cover 2 and the second heat preservation cover 3 of first heat preservation cover 2 and the lower roof of second heat preservation cover 3 of first heat preservation cover 2 and direct sunlight, thereby the inside heat that has reduced the gap entering first heat preservation cover 2 and the second heat preservation cover 3 between passing first heat preservation cover 2 and the second heat preservation cover 3, play the effect that prevents that wire body 1 junction from damaging and high temperature.
During the rotation of the annular plate 23, the gas in the second cavity enters the sleeve 25 through the input end of the sleeve 25, and the second elastic membrane 26 in the sleeve 25 expands in a direction away from the second cavity because the elastic coefficient of the second elastic membrane 26 is smaller than that of the first elastic membrane 19, and the second elastic membrane 26 has a tendency to recover; when the external temperature decreases, the first elastic membrane 19 stops expanding and gradually recovers, at the same time, the second elastic membrane 26 recovers, and the second elastic membrane 26 pushes the gas in the sleeve 25 to pass through the input end of the sleeve 25 and impact the side wall of the tooth slot, so that the annular plate 23 can be driven to rotate reversely, the gas content in the pressure release cavity 18 gradually becomes to an initial state in the process, and the first elastic membrane 19 recovers, so as to play a role in preparation for working again.
As shown in fig. 4, the side wall of the mounting plate 20 is uniformly and movably embedded with balls 27, and the surface of the balls 27 is a mirror surface.
Through adopting above-mentioned technical scheme, because ball 27 activity inlays and establishes on the lateral wall of mounting panel 20, consequently at the in-process that first magnet drove mounting panel 20 pivoted, ball 27 rolls, reduced the frictional force that mounting panel 20 received this moment to ball 27's surface is the mirror surface, thereby reduced the frictional force that ball 27 received, consequently under ball 27's effect, reduced the resistance that mounting panel 20 rotated the in-process and received, can drive spoiler 21 fast rotation for guaranteeing mounting panel 20, thereby played the effect of guaranteeing that spoiler 21 can drive first heat preservation cover 2 and second heat preservation cover 3 surrounding air flow.
The using method comprises the following steps: when the cable length is insufficient and the cable needs to be spliced, firstly, the adjacent ends of the two wire bodies 1 are electrically connected together, then the first heat preservation cover 2 and the second heat preservation cover 3 are aligned, the threaded sleeve 4 on the second heat preservation cover 3 is rotated, so that the threaded sleeve 4 on the second heat preservation cover 3 can be moved to the first heat preservation cover 2, at the moment, the first heat preservation cover 2 and the second heat preservation cover 3 can be tightly attached together, after the cable is laid, the wire bodies 1 are electrified, the magnetic effect of current can know that the wire bodies 1 are electrified instantly, a magnetic field which is mutually attracted with the magnetic strips 10 is generated around the wire bodies 1, at the moment, the attraction force of the magnetic strips 10 is larger than the elastic force of the springs 9, the mounting rods 8 extend out of the jacks, and the end of the mounting rods 8 extending out of the jacks exert thrust on the inclined surfaces on the lugs 11, the thrust force is decomposed along the inclined plane direction and the horizontal direction, under the action of the component force in the horizontal direction, the mounting ring 6 drives the sealing ring 7 to move towards the direction close to the first heat preservation cover 2, the sealing ring 7 gradually enters a space formed between the inside of the second heat preservation cover 3 and the outer wall of the inner heat preservation cover 5, and under the action of the thrust force of the mounting rod 8, the sealing ring 7 is tightly attached to the inner wall of the second heat preservation cover 3 and the outer wall of the inner heat preservation cover 5, and as the first heat preservation cover 2, the second heat preservation cover 3, the thread bush 4, the inner heat preservation cover 5 and the sealing ring 7 are all made of heat preservation materials, the heat transferred from the outside to the junction of the wire body 1 is reduced in hot summer, and the probability of damage of the junction of the wire body 1 due to overhigh temperature is reduced; after the mounting rod 8 extends out of the jack, the ejector rod 12 in the transverse groove on the side wall of the mounting rod 8 is contacted with the inclined plane of the protruding block 11; when the external temperature rises, under the action of the heat conducting rod 15, the temperature in the first cavity rises, ammonia in the first cavity is heated and expands at the moment, the expanded ammonia pushes the second magnetic plate 14 to move along the first cavity, namely, the second magnetic plate 14 gradually approaches the pressurizing cavity, at the moment, under the action of the repulsive force between the first magnetic plate 13 and the second magnetic plate 14, the first magnetic plate 13 moves towards the direction approaching to the jack, so that gas in the pressurizing cavity enters the jack, under the action of the vertical hole, the pressure in the transverse groove increases, so that the ejector rod 12 has the trend of stretching out from the transverse groove, and the ejector rod 12 applies the pushing force in the horizontal direction to the protruding block 11, at the moment, the degree of adhesion between the sealing ring 7 and the outer wall of the inner heat insulation cover 5 and the inner wall of the second heat insulation cover 3 is further improved under the pushing force of the ejector rod 12, namely, when the external environment is in a high temperature state, the heat insulation effect is further improved, because the heat insulation ring 16 is arranged on the inner wall of the second heat insulation cover 3, when the sealing ring 7 enters the space between the inner wall of the second heat insulation cover 3 and the outer wall of the inner heat insulation cover 5, the sealing ring 7 is clamped between the inner wall of the heat insulation ring 5 and the heat insulation cover 5 and the inner wall of the heat insulation ring 16, and the heat insulation ring 5 is filled between the heat insulation ring and the heat insulation cover 5 and the space between the heat insulation ring 16 and the inner wall of the heat insulation cover 5 and the heat insulation cover 5; photovoltaic cables are usually installed outdoors, and in windy weather, dust such as gravel on the ground is blown up and drifts with the wind; because the inside wall of heat preservation circle 16 and the outer wall of interior heat preservation cover 5 are the inclined plane, consequently at the in-process of continuing connector 1, when impurity dropped the surface of heat preservation circle 16 inner wall and interior heat preservation cover 5 outer wall, impurity will slide along the inclined plane to ensure that interior heat preservation cover 5 outer wall and heat preservation circle 16 inner wall all are in smooth state, the in-process between seal circle 7 clamp interior heat preservation cover 5 and heat preservation circle 16 has reduced the frictional force that seal circle 7 received, thereby prevent that seal circle 7 surface wear, ensure that seal circle 7 can closely laminate with interior heat preservation cover 5 and heat preservation circle 16, played the effect that improves the heat preservation effect.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (10)
1. A high temperature resistant flame retardant photovoltaic cable comprises a wire body (1);
the connecting mechanism comprises a first heat-insulating cover (2) and a second heat-insulating cover (3) which are symmetrically and fixedly sleeved at two ends of the wire body (1), and a thread sleeve (4) matched with threads is movably sleeved on the second heat-insulating cover (3);
the method is characterized in that: further comprises:
the sealing mechanism comprises an inner heat-preserving cover (5) fixedly arranged on the inner wall of the first heat-preserving cover (2), a mounting ring (6) which is in sliding fit with the wire body (1) is arranged in the second heat-preserving cover (3), a sealing ring (7) is fixedly arranged on the side wall, close to one side of the first heat-preserving cover (2), of the mounting ring (6), and the sealing ring (7) is matched with a gap between the outer wall of the inner heat-preserving cover (5) and the inner wall of the first heat-preserving cover (2);
the first actuating mechanism, first actuating mechanism is including seting up the jack on second heat preservation cover (3) inside wall, slidable mounting has installation pole (8) in the jack, fixed mounting has spring (9) between the one end and the jack that installation pole (8) were kept away from collar (6), just fixed inlay on installation pole (8) is equipped with magnetic stripe (10), just fixed mounting has lug (11) that the cross section is right trapezoid on the lateral wall that sealing washer (7) one side was kept away from to collar (6), just the roof of lug (11) is the inclined plane.
2. The high temperature resistant and flame retardant photovoltaic cable of claim 1, wherein: the pressurizing mechanism comprises a transverse groove formed in the side wall of the mounting rod (8), a push rod (12) is slidably mounted in the transverse groove, a vertical hole with the bottom end communicated with the transverse groove is formed in the top wall of the mounting rod (8), a pressurizing cavity is formed in the second heat preservation cover (3), a first magnetic plate (13) is horizontally and smoothly mounted in the pressurizing cavity, and a second driving mechanism matched with the first magnetic plate (13) is arranged on the second heat preservation cover (3);
the second driving mechanism comprises a first cavity horizontally arranged on the second heat preservation cover (3), a second magnetic plate (14) which is mutually exclusive with the first magnetic plate (13) is slidably arranged in the first cavity, a heat conduction rod (15) with the top end extending to the surface of the second heat preservation cover (3) is fixedly inserted into the side wall of one side of the first cavity far away from the pressurizing cavity, ammonia is filled in the space of one side of the first cavity far away from the pressurizing cavity, which is positioned in the second magnetic plate (14), the thread bush (4) and the sealing ring (7) are made of heat preservation materials, and threads are arranged on the side wall of one end of the first heat preservation cover (2) far away from the line body (1).
3. The high temperature resistant and flame retardant photovoltaic cable of claim 2, wherein: the inner side wall of the second heat preservation cover (3) is fixedly provided with a heat preservation ring (16), the heat preservation ring (16) is matched with the sealing ring (7), and the inner side wall of the heat preservation ring (16) and the outer wall of the inner heat preservation cover (5) are inclined planes.
4. A high temperature resistant flame retardant photovoltaic cable according to claim 3, characterized in that: an elastic air bag (17) is fixedly arranged on the side wall, far away from one side of the mounting ring (6), of the sealing ring (7), and the output end of the elastic air bag (17) is matched with the inner heat insulation cover (5) and the heat insulation ring (16).
5. The high temperature resistant and flame retardant photovoltaic cable of claim 4, wherein: the pressure release cavity (18) is formed in the first heat preservation cover (2), a mounting opening communicated with the pressure release cavity (18) is formed in a position, located on the surface of the inner heat preservation cover (5), of the inner wall of the first heat preservation cover (2), and a first elastic membrane (19) is fixedly mounted in the mounting opening.
6. The high temperature resistant and flame retardant photovoltaic cable of claim 5, wherein: the novel heat-preservation cover is characterized in that a mounting groove is formed in the outer wall of the first heat-preservation cover (2), a mounting plate (20) is slidably mounted in the mounting groove, a spoiler (21) is uniformly and fixedly mounted on the side wall of the mounting plate (20), a first permanent magnet (22) is uniformly mounted on the mounting plate (20), and a third driving mechanism matched with the mounting plate (20) is arranged on the first heat-preservation cover (2).
7. The high temperature resistant and flame retardant photovoltaic cable of claim 6, wherein: the third driving mechanism comprises a second cavity formed in the first heat-preserving cover (2), the second cavity is annular, an annular plate (23) is rotationally arranged in the second cavity, tooth grooves are uniformly formed in the side wall, close to one side of the pressure relief cavity (18), of the annular plate (23), an air supply hole communicated with the second cavity is formed in the side wall of the pressure relief cavity (18), and a second permanent magnet (24) which is mutually attracted with the first permanent magnet (22) is uniformly and fixedly arranged on the side wall of the annular plate (23).
8. The high temperature resistant and flame retardant photovoltaic cable of claim 7, wherein: a sleeve (25) with an input end extending into the second cavity is fixedly arranged in the pressure release cavity (18), and a second elastic membrane (26) is fixedly arranged in the sleeve (25).
9. The high temperature resistant and flame retardant photovoltaic cable of claim 8, wherein: the ratio of the elastic coefficient of the second elastic film (26) to the elastic coefficient of the first elastic film (19) is 1:2.
10. the high temperature resistant and flame retardant photovoltaic cable of claim 9, wherein: the side wall of the mounting plate (20) is uniformly and movably embedded with balls (27), and the surface of the balls (27) is a mirror surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310289338.2A CN115995309B (en) | 2023-03-23 | 2023-03-23 | High-temperature-resistant flame-retardant photovoltaic cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310289338.2A CN115995309B (en) | 2023-03-23 | 2023-03-23 | High-temperature-resistant flame-retardant photovoltaic cable |
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| CN115995309B true CN115995309B (en) | 2023-05-30 |
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| CN113140368A (en) * | 2021-01-22 | 2021-07-20 | 李泽兵 | Heat-insulation self-adjusting high-low temperature resistant cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102011122156A1 (en) * | 2011-12-23 | 2013-06-27 | Hemstedt GmbH | Cable joint device |
| CN112701652B (en) * | 2020-12-21 | 2022-03-11 | 海南电网有限责任公司三亚供电局 | Be applied to fire-proof device that explodes of cable junction |
| CN115065028B (en) * | 2022-08-17 | 2022-10-25 | 山东达驰电气有限公司 | Submarine cable connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113140368A (en) * | 2021-01-22 | 2021-07-20 | 李泽兵 | Heat-insulation self-adjusting high-low temperature resistant cable |
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