CN116995614A - Outdoor termination of low pressure photovoltaic - Google Patents
Outdoor termination of low pressure photovoltaic Download PDFInfo
- Publication number
- CN116995614A CN116995614A CN202311254094.0A CN202311254094A CN116995614A CN 116995614 A CN116995614 A CN 116995614A CN 202311254094 A CN202311254094 A CN 202311254094A CN 116995614 A CN116995614 A CN 116995614A
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- shell
- wall
- temperature sensing
- ring
- linkage assembly
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- 210000001503 joint Anatomy 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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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
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
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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
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/18—Distribution boxes; Connection or junction boxes providing line outlets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to the technical field of photovoltaic junction boxes, in particular to a low-voltage photovoltaic outdoor junction device, which comprises an outer box body, a temperature control conductive structure, an outgoing line structure and a junction structure; the bottom wall of the outer box body is provided with a mounting groove, a supporting frame is arranged in the mounting groove, two sides of the supporting frame are provided with a plurality of clamping plates, the clamping plates are provided with conducting strips, and the conducting strips between two adjacent clamping plates are connected through a diode; the temperature control conductive structure comprises an inserting block, a temperature sensing barrel, a temperature sensing expansion piece and a first linkage assembly, wherein the temperature sensing barrel is arranged between the supporting frame and the inserting block, the temperature sensing expansion piece is filled in the temperature sensing barrel, the first linkage assembly is in butt joint with the temperature sensing expansion piece, the other end of the first linkage assembly slides in the inserting block, and a cable extending out of the wire outlet structure is connected with the wiring structure; the photovoltaic junction box is used for solving the problem that the circuit is easy to damage due to high working temperature in the photovoltaic junction box in the prior art, can optimize the structure of the device, adjusts the connection state of the circuit according to the temperature in the box, avoids damaging an external circuit, and improves the use safety.
Description
Technical Field
The invention relates to the technical field of photovoltaic junction boxes, in particular to a low-voltage photovoltaic outdoor junction device.
Background
The photovoltaic junction box is a connecting device between the solar cell array and the solar charging control device, and mainly has the effects of connecting and protecting the solar photovoltaic module, connecting the electric power generated by the solar cell with an external circuit and conducting the current generated by the photovoltaic module.
However, when the existing photovoltaic junction box is short-circuited or failed in the use process, the working temperature inside the photovoltaic junction box is easily increased, and then the photovoltaic panel and the external circuit are damaged, so that larger economic loss is generated, and potential safety hazards exist.
Disclosure of Invention
The invention provides the low-voltage photovoltaic outdoor wiring device for solving the problem that the circuit is dangerous due to the fact that the working temperature inside the photovoltaic junction box is high, the structure of the device can be optimized, the connection state of the circuit can be adjusted according to the temperature inside the box, the photovoltaic panel and the external circuit are prevented from being damaged, and the use safety is improved.
In order to solve the technical problems, the invention adopts the following technical scheme: the low-voltage photovoltaic outdoor wiring device comprises an outer box body, a temperature control conductive structure, an outgoing line structure and a wiring structure;
the outer box body is provided with a detachable top cover, the bottom wall of the outer box body is provided with a mounting groove, a support frame is arranged in the mounting groove, two sides of the support frame are provided with a plurality of clamping plates, the clamping plates are provided with conducting strips, and the conducting strips on two adjacent clamping plates are connected through a diode;
the temperature control conductive structure comprises an inserting block, a temperature sensing barrel and a temperature sensing expansion piece, wherein the inserting block extends out of the outer box body from the mounting groove, the temperature sensing barrel is arranged between the supporting frame and the inserting block, the temperature sensing expansion piece is filled in the temperature sensing barrel, a first sliding linkage assembly is arranged in the temperature sensing barrel, one end of the first linkage assembly is abutted to the temperature sensing expansion piece, the other end of the first linkage assembly slides in the inserting block, a first conductive ring is arranged on the inner wall of the inserting block, and the first linkage assembly is electrically connected with the first conductive ring;
the wire outlet structure is arranged in the outer box body, the wiring structure is arranged on the outer wall of the outer box body, and a cable wire extending out of the wire outlet structure is wound around the outer box body and connected with the wiring structure.
Further, the first linkage assembly comprises a push rod, one end of the push rod is provided with a pressing block, the pressing block is provided with a conductive block, the conductive block is arranged in the inserting block in a sliding mode, the other end of the push rod is provided with a connecting frame, and the connecting frame is in butt joint with the temperature-sensing expansion piece.
Further, an intermediate cavity is arranged in the temperature sensing barrel, the push rod slides in the intermediate cavity, and a pushing spring is arranged between the push rod and the inner wall of the intermediate cavity.
Further, be equipped with gas storage layer and jet loop in the top cap, the lateral wall of jet loop is equipped with the inlet port, the inlet port with the gas storage layer intercommunication, the diapire of jet loop is equipped with the orientation the inside fumarole of outer box body, the inside of jet loop is equipped with slidable shutoff piece, the shutoff piece is used for controlling the switching of inlet port, be equipped with slidable second linkage subassembly in the jet loop, the one end of second linkage subassembly with the shutoff piece is connected, the other end of second linkage subassembly with first linkage subassembly butt.
Further, the second linkage assembly comprises a pressing block, one end of the pressing block is provided with a pressing frame, the pressing frame is connected with the blocking block, the other end of the pressing block is connected with a push rod, and the push rod extends into the temperature sensing barrel to be in butt joint with the first linkage assembly.
Further, an intermediate cylinder is arranged in the air injection ring cylinder, the pressing block slides in the intermediate cylinder, and a pressing spring is arranged between the pressing frame and the air injection ring cylinder.
Further, the wire outlet structure comprises a fixing seat, a wire collecting shell and a cable, wherein the fixing seat is arranged on two sides of the supporting frame, the wire collecting shell is installed on the fixing seat, a core column is arranged in the wire collecting shell, a rotating shell is arranged between the inner wall of the wire collecting shell and the core column, a coil spring is connected between the core column and the inner wall of the rotating shell, a second conductive ring electrically connected with the conductive sheet is arranged on the inner wall of the wire collecting shell, a third conductive ring electrically connected with the second conductive ring is arranged on the outer wall of the rotating shell, the cable is wound on the rotating shell, one end of the cable is connected with the third conductive ring, and the other end of the cable extends out of the wire collecting shell and is connected with the wiring structure.
Further, the outer wall of the rotating shell is further provided with a winding coil shell, and the cable is wound on the outer wall of the winding coil shell.
Further, the wiring structure comprises a ring shell, the ring shell is sleeved on the outer wall of the outer box body, a storage shell is arranged on the ring shell, a connector for external wiring is arranged in the storage shell, and a cable extending out of the wire outlet structure is wound on the ring shell and connected with the connector.
Further, an arc-shaped wire shell is arranged on the outer wall of the ring shell, and the cable extends out of the wire outlet structure and is wound on the arc-shaped wire shell and then connected with the connector.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a low-voltage photovoltaic outdoor wiring device, which is characterized in that when wiring works, when the working temperature in an outer box body is at a normal working temperature, the expansion amplitude of a temperature-sensitive expansion piece is small, the first linkage assembly can be pushed to slide up and down in a first conductive ring, so that the first linkage assembly and the first conductive ring are always in a connection state, normal conduction is ensured, when the working temperature is too high due to short circuit or faults of a circuit, the expansion amplitude of the temperature-sensitive expansion piece is large, the first linkage assembly can be pushed away from the first conductive ring, the photovoltaic panel is disconnected from an external circuit, the connection is cut off, larger loss is avoided, and potential safety hazards are cut off.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a low voltage photovoltaic outdoor junction device of the present invention;
FIG. 2 is a schematic view of the structure of the outer case of the present invention with the top cover removed;
FIG. 3 is a schematic view of the bottom of the outer case of the present invention;
FIG. 4 is a schematic structural view of the temperature sensing cylinder and the plug block of the invention in a matched installation;
FIG. 5 is a schematic view of the structure of the top cover of the present invention;
fig. 6 is a schematic structural view of the air-jet collar inside the top cover of the present invention.
Fig. 7 is a schematic structural diagram of the inside of the winding shell of the wire outlet structure in the present invention;
FIG. 8 is a schematic view of the structure of the coil housing of the wiring structure of the present invention;
reference numerals: 1-an outer box body; 2-fixing the ear seat; a 3-connector; 4-a storage case; 5-top cover; 6-a ring shell; 7-pressing rings; 8-an arc line shell; 9-clamping plates; 10-diode slots; 11-conductive sheets; a 12-diode; 13-supporting frames; 14-ejector rods; 15-a temperature sensing cylinder; 16-cable; 17-winding up the wire shell; 18-fixing base; 19-briquetting; 20-conducting blocks; 21-tabletting; 22-plug blocks; 23-pressing plates; 24-stem; 25-coil springs; 26-turning the shell; 27-winding the coil housing; 28-a third conductive loop; 29-a second conductive loop; 30-an air storage layer; 31-an air injection cylinder; 32-an intermediate cylinder; 33-pressing blocks; 34-pressing the spring; 35-a pressing frame; 36-gas injection holes; 37-blocking; 38-an air inlet hole; 39-a temperature-sensitive expansion member; 40-an intermediate chamber; 41-push rod; 42-connecting frames; 43-push spring; 44-piston ring plate; 45-a first conductive loop; 46-sliding chamber.
Detailed Description
The technical solutions of 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 apparent that the described embodiments are only a distinguishing embodiment of the present invention, not a full-area embodiment. The invention is described in one of its examples in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The embodiment provides a low-voltage photovoltaic outdoor junction device, as shown in fig. 1-2, including outer box body 1, go out line structure, wiring structure and control by temperature change electrically conductive structure, wherein, outer box body 1 is preferably designed to cylindrical structure, be equipped with fixed ear seat 2 at the outer wall of outer box body 1, be used for connecting the installation location outer box body 1 on outdoor workstation, top at outer box body 1 is provided with detachable top cap 5, inside outer box body 1, the central line position department along outer box body 1 has seted up the bar mounting groove, be provided with the support frame 13 with outer box body 1 inside wall fixed connection in the bar mounting groove, the both sides of support frame 13 are equipped with a plurality of cardboard 9 respectively, this embodiment is preferably set up three cardboard 9 respectively in the both sides of support frame 13, be provided with diode groove 10 between two adjacent cardboard 9, diode groove 10 is used for setting up diode 12, be provided with conducting strip 11 in the side of cardboard 9, link to each other through diode 12 electricity between two adjacent conducting strip 11, simultaneously, the bottom fixedly connected with clamping ring 7 of outer box body 1, be in this embodiment, be the preferred 2 sets up for setting up at two and go out line structure, the cable wire structure is the junction device is in the outer wall 1, the junction device is stretched out line structure is provided with at two outer junction box 1, the outer wall structure 1, the junction device is stretched out the junction device is realized to the outer junction device is in the two-junction device 1, the two-side of the junction device is outside line structure is arranged in the junction device is 16, and the junction device is outside the junction device is used to the junction device 1.
Specifically, in this embodiment, as shown in fig. 2-4, a temperature control conductive structure is disposed below the support frame 13, the temperature control conductive structure includes a temperature sensing cylinder 15 and a first linkage assembly, where the temperature sensing cylinder 15 is fixedly connected to the bottom of the support frame 13 and corresponds to the conductive sheet 11, the first linkage assembly includes a push rod 41, a pressing block 19 and a conductive block 20, an intermediate cavity 40 is disposed in the temperature sensing cylinder 15, one end of the push rod 41 is slidably disposed in the intermediate cavity 40, and the other end of the push rod 41 extends into the temperature sensing cylinder 15, the end of the push rod 41 located in the intermediate cavity 40 is fixedly connected with a pressing block 19, the bottom end of the pressing block 19 is fixedly connected with the conductive block 20, the conductive block 20 is electrically connected with the conductive sheet 11, the end of the push rod 41 located in the temperature sensing cylinder 15 is provided with a connecting frame 42, one end of the connecting frame 42 is provided with a piston ring 44, two ends of the piston ring 44 are slidably connected between the inner wall of the temperature sensing cylinder 15 and the outer wall of the intermediate cavity 40, and the area enclosed by the piston ring 44 and the inner wall of the intermediate cavity 40 is filled with a temperature sensing expansion element 39.
When the temperature in the outer box body 1 rises, the temperature-sensing expansion piece 39 is heated to expand, the temperature-sensing expansion piece 39 pushes the piston ring plate 44 to rise, the piston ring plate 44 pushes the connecting frame 42 to rise, the connecting frame 42 drives the push rod 41 to rise, the push rod 41 drives the pressing block 19 and the conductive block 20 to rise in the middle cavity 40 of the temperature-sensing barrel 15, and when the temperature in the outer box body 1 drops, the temperature-sensing expansion piece 39 contracts and sequentially drives the push rod 41 to drop, so that the push rod 41 drives the pressing block and the conductive block 20 to slide in the temperature-sensing barrel 15.
Further, as shown in fig. 3-4, the temperature control conductive structure further includes an insert 22 located below the temperature sensing barrel 15, the bottom end of the insert 22 is fixedly connected with a pressing plate 23, the bottom of the pressing plate 23 is fixedly connected with a pressing plate 21, the top end of the insert 22 is provided with a sliding cavity 46, a pressing block 19 stretches into the sliding cavity 46 and can slide in the sliding cavity 46, the inner wall of the sliding cavity 46 is fixedly connected with a first conductive ring 45 electrically connected with the pressing plate 21, when the pressing block 19 slides on the inner wall of the sliding cavity 46, the pressing block 19 drives the side wall of the conductive block 20 to contact with the inner wall of the first conductive ring 45, so that elements such as a cable 16 in the outer box 1 can process connection states, normal wiring operation can be performed, and if the pressing block 19 drives the conductive block 20 to be separated from the first conductive ring 45 in the insert 22, the circuit is disconnected.
Further, as shown in fig. 4, in order to buffer the sliding of the pressing block 19 inside the temperature sensing cylinder 15, the present embodiment is preferably provided with a pressing spring 43 between the top wall of the pressing block 19 and the top wall of the intermediate chamber 40.
In particular, in this embodiment, as shown in fig. 5-6, in order to further reduce the temperature in the outer box 1 and avoid the danger of circuit connection at high temperature, the top of the outer box 1 of this embodiment is provided with a detachable top cover 5, the top inner wall of the top cover 5 is fixedly connected with a gas storage layer 30, carbon dioxide dry ice is filled in the gas storage layer 30, a round hole corresponding to the temperature sensing cylinder 15 is formed in the bottom of the gas storage layer 30, a jet collar 31 is arranged in the inner wall of the round hole, a slidable second linkage assembly is arranged in the jet collar 31, wherein a middle cylinder 32 is arranged in the jet collar 31, a slidable blocking block 37 is arranged between the inner wall of the jet collar 31 and the outer wall of the middle cylinder 32, an air inlet 38 is arranged on the side wall of the jet collar 31, the movable blocking block 37 can open and close the air inlet 38, the bottom wall of the jet collar 31 is provided with an air injection hole 36, the second linkage assembly comprises a pressing block 33, a pressing block 35 and a top 14, the pressing block 33 is slidably connected to the inner wall of the middle cylinder 32, the top end of the pressing block 33 is connected with the pressing block 35, the pressing block 35 is fixedly connected to the blocking block 37, one end of the middle 14 is connected to the top end of the middle cylinder 32 and extends to the top end of the top rod 33 and the top end of the top rod 41 is connected to the top end of the top rod 41.
When the temperature-sensitive expansion piece 39 is expanded due to the over high working temperature, the temperature-sensitive expansion piece 39 pushes the piston ring plate 44 to rise, the piston ring plate 44 drives the push rod 41 to rise through the connecting frame 42, the push rod 41 moves upwards to drive the push rod 14 to rise, the push rod 14 rises and extrudes the top pressing block 33, the top pressing block 33 moves upwards in the middle cylinder 32 to drive the blocking block 37 to move upwards, the blocking block 37 leaves the air inlet hole 38, carbon dioxide dry ice in the air storage layer 30 enters the air injection ring cylinder 31 through the air inlet hole 38 on the side wall of the air injection ring cylinder 31, is sprayed into the outer box body 1 through the air injection hole 36 on the bottom wall of the air injection ring cylinder 31, and then cools the inner part of the outer box body 1, so that fire disaster caused by high temperature inside the outer box body 1 is prevented.
Further, as shown in fig. 6, in order to buffer the sliding of the ejector block 33 inside the jet collar 31, the present embodiment is preferably provided with an ejector spring 34 between the ejector frame 35 and the intermediate cylinder 32.
Specifically, in this embodiment, as shown in fig. 7, the wire outlet structure includes a fixing seat 18, a wire winding shell 17 and a rotating shell 26, the fixing seat 18 is fixedly connected with the bottom surface of the inner wall of the outer box body 1, the wire winding shell 17 is installed at the top of the fixing seat 18, a core column 24 is disposed at the central axis position of the wire winding shell 17, the rotating shell 26 is rotationally connected with the wire winding shell 17, the rotating shell 26 is disposed between the core column 24 and the wire winding shell 17, and a coil spring 25 is disposed between the inner wall of the rotating shell 26 and the outer wall of the core column 24, so that the cable 16 is convenient to extend or shorten.
Meanwhile, the second conductive ring 29 is arranged on the inner wall of the winding shell 17, the third conductive ring 28 is arranged on the outer wall of the rotating shell 26, the third conductive ring 28 is electrically connected with the second conductive ring 29 in a rotating mode, the second conductive ring 29 is electrically connected with the conductive sheet 11, the winding shell 27 is further arranged on the outer wall of the rotating shell 26, the cable 16 is wound on the outer wall of the winding shell 27, the winding position of the cable 16 is limited by the winding shell 27, the cable 16 can be positioned, the cable 16 is prevented from falling off or knotting, the connection stability is improved, one end of the cable 16 is connected with the third conductive ring 28, and the other end of the cable 16 extends out of the winding shell 17 to ensure normal wiring operation in the outer box body 1.
Specifically, in this embodiment, as shown in fig. 8, the connection structure includes a ring shell 6, in this embodiment, two ring shells 6 are preferably provided, the two ring shells 6 are respectively rotatably connected to the upper and lower sidewalls of the outer box body 1, the outer walls of the ring shells 6 are respectively provided with a storage shell 4, the inner wall of the storage shell 4 is provided with a connector 3 that is rotatably connected, a cable 16 is connected with the connector 3, the internal connection of the outer box body 1 is completed normally, and after the external circuit is connected with the connector 3, the low-voltage photovoltaic outdoor connection device of this embodiment can be connected to the external working circuit.
Further, as shown in fig. 8, in this embodiment, an annular arc-shaped wire housing 8 is disposed on the outer wall of the ring housing 6, and the end portion of the cable 16 extending out of the wire winding housing 17 passes through the arc-shaped wire housing 8 and then is electrically connected to the connector 3, so that the cable 16 can be positioned by using the arc-shaped wire housing 8.
The low-voltage photovoltaic outdoor wiring device in this embodiment can flexibly adjust the connection length and connection angle of the cable 16 by using the wire outlet structure and the wire collecting structure, and when the output wire of the external circuit changes the angle, the connector 3 is pulled, so that the coil housing 6 is pulled to rotate, and the cable 16 is pulled out of the coil housing 27, so as to adjust the wiring length and the wiring angle.
Working principle:
when the embodiment is used, the pressing piece 21 is fixedly arranged on the photovoltaic panel, the pressing piece 19 in the temperature sensing barrel 15 extends into the first conductive ring 45, the conductive block 20 is in contact with the first conductive ring 45 for conduction, then the outer box body 1 is fixed through the fixed ear seat 2, the connector 3 is taken out from the storage shell 4, and can be externally connected with an output line for use, when the working temperature in the outer box body 1 is at the normal working temperature in wiring work, the expansion amplitude of the temperature sensing expansion piece 39 is smaller, the piston ring plate 44 can be pushed to move up and down, the conductive block 20 is driven to slide up and down in the first conductive ring 45 through the connecting frame 42, the push rod 41 and the pressing piece 19, the conductive block 20 is always in a connecting state with the first conductive ring 45, normal conduction is ensured, when the working temperature is overhigh due to short circuit or fault, the expansion amplitude of the temperature-sensitive expansion piece 39 is larger, the piston ring plate 44 can be pushed to move upwards, the conducting block 20 is pushed away from the first conducting ring 45, the photovoltaic plate is disconnected from an external circuit, larger loss is prevented from being caused, meanwhile, the expansion amplitude of the temperature-sensitive expansion piece 39 is larger, the push rod 41 moves upwards to drive the push rod 14 to lift, the push rod 14 lifts and extrudes the pressing block 33, the pressing block 33 moves upwards in the middle cylinder 32 to drive the blocking block 37 to move upwards, the blocking block 37 leaves the air inlet hole 38, carbon dioxide dry ice in the air storage layer 30 enters the air injection ring 31 through the air inlet hole 38 on the side wall of the air injection ring 31, is sprayed into the outer box 1 through the air injection hole 36 on the bottom wall of the air injection ring 31, and then cools the inner part of the outer box 1, and fire is prevented from being caused by high temperature inside the outer box 1.
In the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances. In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc., or direct/indirect use in other related technical fields, which are within the spirit and principle of the present invention, should be included in the scope of the claims of the present invention.
Claims (10)
1. The low-voltage photovoltaic outdoor wiring device is characterized by comprising an outer box body, a temperature control conductive structure, an outgoing line structure and a wiring structure;
the outer box body is provided with a detachable top cover, the bottom wall of the outer box body is provided with a mounting groove, a support frame is arranged in the mounting groove, two sides of the support frame are provided with a plurality of clamping plates, the clamping plates are provided with conducting strips, and the conducting strips on two adjacent clamping plates are connected through a diode;
the temperature control conductive structure comprises an inserting block, a temperature sensing barrel and a temperature sensing expansion piece, wherein the inserting block extends out of the outer box body from the mounting groove, the temperature sensing barrel is arranged between the supporting frame and the inserting block, the temperature sensing expansion piece is filled in the temperature sensing barrel, a first sliding linkage assembly is arranged in the temperature sensing barrel, one end of the first linkage assembly is abutted to the temperature sensing expansion piece, the other end of the first linkage assembly slides in the inserting block, a first conductive ring is arranged on the inner wall of the inserting block, and the first linkage assembly is electrically connected with the first conductive ring;
the wire outlet structure is arranged in the outer box body, the wiring structure is arranged on the outer wall of the outer box body, and a cable wire extending out of the wire outlet structure is wound around the outer box body and connected with the wiring structure.
2. The outdoor wiring device of claim 1, wherein the first linkage assembly comprises a push rod, a pressing block is arranged at one end of the push rod, a conductive block is arranged on the pressing block and is arranged in the inserting block in a sliding manner, a connecting frame is arranged at the other end of the push rod, and the connecting frame is in butt joint with the temperature-sensing expansion piece.
3. The outdoor wiring device of claim 2, wherein an intermediate chamber is provided in the temperature sensing barrel, the push rod slides in the intermediate chamber, and a push spring is provided between the push rod and an inner wall of the intermediate chamber.
4. The outdoor wiring device of claim 1, wherein an air storage layer and an air injection ring are arranged in the top cover, an air inlet is arranged on the side wall of the air injection ring, the air inlet is communicated with the air storage layer, an air injection hole facing the inside of the outer box body is arranged on the bottom wall of the air injection ring, a slidable blocking block is arranged in the air injection ring and used for controlling the opening and closing of the air inlet, a slidable second linkage assembly is arranged in the air injection ring, one end of the second linkage assembly is connected with the blocking block, and the other end of the second linkage assembly is in butt joint with the first linkage assembly.
5. The outdoor wiring device of claim 4, wherein the second linkage assembly comprises a pressing block, one end of the pressing block is provided with a pressing frame, the pressing frame is connected with the blocking block, the other end of the pressing block is connected with a push rod, and the push rod extends into the temperature sensing barrel and is in butt joint with the first linkage assembly.
6. The outdoor low-voltage photovoltaic wiring device according to claim 5, wherein an intermediate cylinder is arranged in the air injection ring cylinder, the pressing block slides in the intermediate cylinder, and a pressing spring is arranged between the pressing frame and the air injection ring cylinder.
7. The outdoor wiring device of claim 1, wherein the wire outlet structure comprises a fixing seat, a wire collecting shell and a cable, the fixing seat is arranged on two sides of the supporting frame, the wire collecting shell is installed on the fixing seat, a core column is arranged in the wire collecting shell, a rotating shell is arranged between the inner wall of the wire collecting shell and the core column, a coil spring is connected between the core column and the inner wall of the rotating shell, a second conductive ring electrically connected with the conductive sheet is arranged on the inner wall of the wire collecting shell, a third conductive ring electrically connected with the second conductive ring is arranged on the outer wall of the rotating shell, the cable is wound on the rotating shell, one end of the cable is connected with the third conductive ring, and the other end of the cable extends out of the wire collecting shell to be connected with the wiring structure.
8. The outdoor low-voltage photovoltaic wiring device of claim 7, wherein the outer wall of the rotor housing is further provided with a winding coil housing, and the cable is wound around the outer wall of the winding coil housing.
9. The outdoor wiring device of claim 1, wherein the wiring structure comprises a ring shell, the ring shell is sleeved on the outer wall of the outer box body, a containing shell is arranged on the ring shell, a connector for external wiring is arranged in the containing shell, and a cable extending out of the wire outlet structure is connected with the connector around the ring shell.
10. The outdoor low-voltage photovoltaic wiring device according to claim 9, wherein the outer wall of the ring shell is provided with an arc-shaped wire shell, and the cable extends from the wire outlet structure and is wound on the arc-shaped wire shell to be connected with the connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311254094.0A CN116995614B (en) | 2023-09-27 | 2023-09-27 | Outdoor termination of low pressure photovoltaic |
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