Inverter inlet wire insulation fireproof fixing device and inverter

Abstract

The utility model discloses an inverter inlet wire insulation fireproof fixing device and an inverter, and relates to the technical field of photovoltaic equipment, the inverter is arranged on a roof through a support frame, the inverter inlet wire insulation fireproof fixing device comprises an insulation separator plate, and the insulation separator plate is arranged on the support frame through a rotating frame; the multiple connecting plates are symmetrically arranged on the two sides of the insulating partition plate; the cathode cable sleeve is connected with the connecting plate located on one side of the insulating partition plate, and a cathode cable penetrates through the cathode cable sleeve; and the positive cable sleeve is connected with the connecting plate located on the other side of the insulating partition plate, and the positive cable sleeve is used for a positive cable to penetrate through. According to the inverter inlet wire insulation fireproof fixing device and the inverter, the technical problem that positive and negative cables are in direct contact due to the fact that an insulation layer of a direct current inlet wire of the inverter is easily damaged in a fire disaster is solved, and the technical effects that the direct current positive and negative cables are effectively isolated by the insulation partition plate, and mutual contact after the insulation layers of the positive and negative cables are damaged is avoided are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, and in particular to an inverter incoming line insulation fireproof fixing device and an inverter. Background Art

[0002] In recent years, with the widespread application of renewable energy, especially the rapid development of photovoltaic power generation systems, distributed rooftop photovoltaic systems have attracted widespread attention because they can directly use the roof space of buildings for energy production. However, with the popularization of distributed photovoltaic systems, their fire safety issues have gradually surfaced.

[0003] In distributed rooftop photovoltaic systems, the inverter is the core device that converts the DC power generated by photovoltaic modules into AC power for use in the power grid or load. Its stable operation is crucial to the safety and efficiency of the entire system. However, when the inverter is running for a long time or is affected by the external environment (such as high temperature, humidity, overvoltage, overcurrent, etc.), there is a risk of failure or even "explosion". The explosion of the inverter will not only cause damage to the equipment itself, but more seriously, it may cause a fire, posing a serious threat to the roof structure, surrounding equipment and even the safety of the entire building.

[0004] After the inverter explodes, the fire often spreads rapidly. One of the important reasons is that the insulation layer of the inverter DC input line (i.e. the positive and negative cables) is easily damaged in the fire, resulting in direct contact between the positive and negative cables, forming circulating currents and arcing. The circulating currents and arcing not only increase the spread of the fire, but also continue to provide energy to the fire, making the fire difficult to control and easily causing heavy losses.

[0005] At present, although there are some fire prevention measures for photovoltaic systems on the market, such as installing fire detectors and setting up automatic fire extinguishing systems, most of the above measures focus on timely response and fire fighting after the fire occurs. There is still a lack of effective technical means to prevent the fire from spreading through the DC cable after the inverter explodes.

[0006] Therefore, how to provide an insulation fire-proof fixing device for the inverter incoming line to effectively prevent the positive and negative cables from directly contacting each other to form a circulating arc after the inverter explodes, thereby significantly reducing the risk of fire expansion is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0007] The utility model aims to provide an inverter incoming line insulation fireproof fixing device and an inverter, which solves the technical problem that the insulation layer of the inverter DC incoming line is easily damaged in a fire, resulting in direct contact between the positive and negative cables.

[0008] In order to achieve the above-mentioned purpose, the utility model provides an inverter incoming line insulation fireproof fixing device, the inverter is mounted on the roof through a support, including:

[0009] An insulating partition, the insulating partition is rotatably mounted on the support frame, and the relative position between the insulating partition and the support frame can be adjusted by the rotating frame;

[0010] Connecting plates, a plurality of the connecting plates are symmetrically arranged on both sides of the insulating partition;

[0011] The negative cable sleeve is connected to the connecting plate on one side of the insulating partition, and the negative cable sleeve is for the negative cable to pass through;

[0012] The positive cable sleeve is connected to the connecting plate on the other side of the insulating partition, and the positive cable sleeve is for the positive cable to pass through.

[0013] Preferably, the rotating frame is arranged at both ends on one side of the insulating partition. The rotating frame includes a first rotating plate and a second rotating plate. One end of the first rotating plate is fixedly connected to the insulating partition, and the other end is detachably connected to the second rotating plate. The other end of the second rotating plate is fixedly connected to the support frame.

[0014] Preferably, the first rotating plate and the second rotating plate are connected by bolts and nuts.

[0015] Preferably, the connecting plates are evenly spaced and inclined on the insulating partition.

[0016] Preferably, fixing plates are provided on the outer walls of the negative cable sleeve and the positive cable sleeve, and the fixing plates are fixedly connected to the connecting plates by bolts and nuts.

[0017] Preferably, insulating gaskets are provided inside the negative cable sleeve and the positive cable sleeve.

[0018] Preferably, the insulating partition, the rotating frame, the negative cable sleeve and the positive cable sleeve are all provided with fireproof coatings.

[0019] An inverter, including the above inverter incoming line insulation and fireproof fixing device.

[0020] Compared with the above background technology, an inverter incoming line insulation and fireproof fixing device provided by the present utility model has the following beneficial effects:

[0021] 1. The insulating partition effectively isolates the DC positive and negative cables, avoiding safety problems such as circulating current and arcing caused by contact after the insulation layers of the positive and negative cables are damaged. Furthermore, no new energy source is generated after the inverter explodes, which is convenient for effectively controlling the fire;

[0022] 2. Since the inner walls of the negative cable sleeve and the positive cable sleeve are respectively in contact with the positive and negative incoming cables to provide a supporting effect, it can prevent the cable from sagging due to its own weight and causing loosening of the inverter joint.

[0023] 3. By setting the negative cable sleeve and the positive cable sleeve, the incoming lines of the inverter are regularized, making the cable layout more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0025] Figure 1 FIG. is a schematic structural diagram of an insulating, fireproof and fixing device for incoming lines of an inverter provided by an embodiment of the present invention;

[0026] Figure 2 For Figure 1 the enlarged view of part A in

[0027] Wherein:

[0028] 1 - insulating partition, 2 - rotating frame, 21 - first rotating plate, 22 - second rotating plate, 3 - connecting plate, 4 - negative cable sleeve, 5 - positive cable sleeve, 6 - fixing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0031] See Figure 1 - Figure 2, an inverter incoming line insulation and fire prevention fixing device provided by the present application. The inverter is installed on the roof through a support frame, and includes: an insulating partition 1, the insulating partition 1 is installed on the support frame through a rotating frame 2, and the rotating frame 2 can adjust the relative position between the insulating partition 1 and the support frame; a connecting plate 3, a plurality of connecting plates 3 are symmetrically arranged on both sides of the insulating partition 1; a negative cable sleeve 4, connected to the connecting plate 3 on one side of the insulating partition 1, and the negative cable sleeve 4 is for the negative cable to pass through; a positive cable sleeve 5, connected to the connecting plate 3 on the other side of the insulating partition 1, and the positive cable sleeve 5 is for the positive cable to pass through.

[0032] Specifically, the insulating partition 1 is installed on the support frame through the rotating frame 2, and the rotating frame 2 allows the relative position between the insulating partition 1 and the support frame to be adjusted to adapt to different installation requirements or cable layouts;

[0033] The connecting plates 3 are symmetrically arranged on both sides of the insulating partition 1. The number of connecting plates 3 can be selected and adjusted according to the actual number or layout of the cables. Multiple connecting plates 3 can be set to support multiple cable sleeves.

[0034] The negative cable sleeve 4 is connected to the connecting plate 3 on one side of the insulating partition 1, providing a passage for the negative cable to pass through. The positive cable sleeve 5 is connected to the connecting plate 3 on the other side of the insulating partition 1 for the positive cable to pass through.

[0035] In summary, for an inverter incoming line insulation and fire prevention fixing device provided by the present application, the insulating partition 1 effectively isolates the DC positive and negative cables, avoiding safety problems such as circulating current and arcing that may be caused by the contact between the positive and negative cables. Furthermore, no new energy source is generated after the inverter explodes, which is convenient for effectively controlling the fire; since the inner walls of the negative cable sleeve 4 and the positive cable sleeve 5 are respectively in contact with the positive and negative incoming line cables to provide a supporting effect, the cables can be prevented from sagging due to their own weight and loosening the connection with the inverter joints. By setting the negative cable sleeve 4 and the positive cable sleeve 5, the incoming lines of the inverter are regularized, making the cable arrangement more beautiful.

[0036] On the basis of the above embodiment, the rotating frame 2 is arranged at both ends on one side of the insulating partition 1. The rotating frame 2 includes a first rotating plate 21 and a second rotating plate 22. One end of the first rotating plate 21 is fixedly connected to the insulating partition 1, and the other end is detachably connected to the second rotating plate 22. The other end of the second rotating plate 22 is fixedly connected to the support frame. The first rotating plate 21 and the second rotating plate 22 are connected by bolts and nuts.

[0037] That is to say, one end of the first rotating plate 21 is fixedly connected to the insulating partition 1. The fixing method can be welding, screw fixing or other reliable connection methods, specifically depending on the use environment.

[0038] One end of the second rotating plate 22 is fixedly connected to the support frame, and the other end is detachably connected to the first rotating plate 21. This detachable connection allows users to easily adjust the position or angle of the insulating partition 1 without disassembling the entire device.

[0039] The first rotating plate 21 and the second rotating plate 22 are connected by bolts and nuts. By tightening or loosening the bolts and nuts, users can easily adjust the relative position between the first rotating plate 21 and the second rotating plate 22, thereby realizing the adjustment of the position of the insulating partition 1.

[0040] When the bolts and nuts are properly tightened, the connection between the first rotating plate 21 and the second rotating plate 22 is very firm, capable of bearing the weight of the cable and possible vibrations, ensuring that the insulating partition 1 will not shift due to external forces.

[0041] Specifically, in order to make the connection between the first rotating plate 21 and the second rotating plate 22 more secure, washers are provided between the bolts and nuts.

[0042] Based on the above embodiments, the connecting plates 3 are arranged on the insulating partition 1 at equal intervals and inclined. Specifically, the connecting plates 3 are inclined upward compared to the insulating partition 1. That is to say, the connecting plates arranged at equal intervals and inclined make the inverter inlets more regular and orderly, not only improving the overall aesthetics of the system, but also making the wiring more clear and obvious, facilitating subsequent maintenance and repair work.

[0043] Based on the above embodiments, fixing plates 6 are provided on the outer walls of the negative cable sleeve 4 and the positive cable sleeve 5. The fixing plates 6 are fixedly connected to the connecting plates 3 by bolts and nuts. The cable specification is 4mm² or 6mm².

[0044] Based on the above embodiments, insulating gaskets are provided inside both the negative cable sleeve 4 and the positive cable sleeve 5; the insulating partition 1, the rotating frame 2, the negative cable sleeve 4, and the positive cable sleeve 5 are all provided with fireproof coatings.

[0045] Specifically, the insulating gasket can effectively isolate the direct contact between the cable and the negative cable sleeve 4 and the positive cable sleeve 5, preventing short circuits or leakage caused by cable outer sheath damage or aging; the insulating gasket can also play a certain protective role for the cable, reducing the friction and wear between the cable and the inner wall of the sleeve when the cable moves in the sleeve, thereby extending the service life of the cable.

[0046] The fireproof coatings applied on the insulating partition 1, the rotating frame 2, the negative cable sleeve 4, and the positive cable sleeve 5, due to the good heat insulation performance of the fireproof coatings, can effectively reduce the effects of thermal radiation and heat conduction.

[0047] Based on the above embodiments, it further includes a monitoring unit, and the monitoring unit includes an infrared sensor, an alarm, and a controller provided on the insulating partition.

[0048] The infrared sensor is responsible for continuously monitoring the temperature change of the insulating partition 1 and its surrounding environment.

[0049] The alarm is used to issue an alarm when an abnormal situation is detected.

[0050] The controller is responsible for receiving the temperature signal transmitted by the infrared sensor, and performing processing and analysis. Usually, a microprocessor or a single-chip microcomputer is included inside the controller, which can execute preset algorithms and logical judgments. When the controller determines that the current temperature value exceeds the warning value, it will trigger the alarm function of the alarm. At the same time, the controller can also record and store historical temperature data, providing a basis for subsequent fault analysis and diagnosis.

[0051] Workflow: The infrared sensor continuously monitors the temperature change of the insulating partition and its surrounding environment, and transmits the monitored temperature value to the controller in real time; after receiving the temperature signal, the controller performs processing and analysis to determine whether the current temperature value exceeds the preset warning value; if the current temperature value exceeds the warning value, the controller will trigger the alarm function of the alarm to emit an audible and visual alarm signal; after receiving the alarm signal, the user should take corresponding measures promptly.

[0052] This application also provides an inverter, including the above-mentioned inverter incoming line insulation fireproof fixing device.

[0053] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0054] Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An inverter incoming line insulation fireproof fixing device, the inverter is mounted on the roof through a support, characterized in that: include: An insulating partition (1), the insulating partition (1) being arranged on the supporting frame via a rotating frame (2), the rotating frame (2) being capable of adjusting the relative position between the insulating partition (1) and the supporting frame; A connecting plate (3), wherein a plurality of the connecting plates (3) are symmetrically arranged on both sides of the insulating partition (1); A negative cable sleeve (4) is connected to the connection plate (3) located on one side of the insulating partition (1), and the negative cable sleeve (4) is used for the negative cable to pass through; The positive cable sleeve (5) is connected to the connection plate (3) located on the other side of the insulating partition (1), and the positive cable sleeve (5) is used for the positive cable to pass through.

2. The inverter incoming line insulation fireproof fixing device according to claim 1, characterized in that: The rotating frame (2) is arranged at both ends of one side of the insulating partition (1), and comprises a first rotating plate (21) and a second rotating plate (22), one end of the first rotating plate (21) is fixedly connected to the insulating partition (1), and the other end is detachably connected to the second rotating plate (22), and the other end of the second rotating plate (22) is fixedly connected to the support frame.

3. The inverter incoming line insulation fireproof fixing device according to claim 2, characterized in that: The first rotating plate (21) and the second rotating plate (22) are connected by bolts and nuts.

4. The inverter incoming line insulation fireproof fixing device according to claim 1, characterized in that: The connecting plates (3) are evenly spaced and arranged obliquely on the insulating partition plate (1).

5. The inverter incoming line insulation fireproof fixing device according to claim 1, characterized in that: The outer walls of the negative cable sleeve (4) and the positive cable sleeve (5) are both provided with fixing plates (6), and the fixing plates (6) are fixedly connected to the connecting plates (3) by means of bolts and nuts.

6. The inverter incoming line insulation fireproof fixing device according to claim 1, characterized in that: Insulating pads are provided inside the negative cable sleeve (4) and the positive cable sleeve (5).

7. The inverter incoming line insulation fireproof fixing device according to claim 6, characterized in that: The insulating partition (1), the rotating frame (2), the negative cable sleeve (4) and the positive cable sleeve (5) are all provided with a fireproof coating.

8. An inverter, characterized in that: The invention comprises the inverter incoming line insulation fireproof fixing device as described in any one of claims 1 to 7.

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