CN219717364U - Waterproof connector with direct-current cable grounding detection function - Google Patents
Waterproof connector with direct-current cable grounding detection function Download PDFInfo
- Publication number
- CN219717364U CN219717364U CN202320908865.2U CN202320908865U CN219717364U CN 219717364 U CN219717364 U CN 219717364U CN 202320908865 U CN202320908865 U CN 202320908865U CN 219717364 U CN219717364 U CN 219717364U
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- main body
- detection function
- waterproof connector
- direct
- cable
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- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 239000000565 sealant Substances 0.000 claims description 9
- 238000011835 investigation Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 3
- 238000009413 insulation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model provides a waterproof connector with a direct-current cable grounding detection function, which has the advantages of simple structure, low cost, convenience in investigation and direct-current cable grounding detection function; the self-sealing device comprises a main body, wherein a connecting hole for penetrating through a direct-current cable is formed in the main body, a cavity is formed in the connecting end part of the main body, a sealing glue is filled in the cavity after a current sensor is arranged in the cavity, and an interface connected with the current sensor is led out from the sealing glue.
Description
Technical Field
The utility model relates to the technical field of cable connectors, in particular to a waterproof connector with a direct-current cable grounding detection function.
Background
In a photovoltaic power station, a direct current outgoing cable in a direct current junction box has high voltage (DC 1000-DC 1500V) and large current (generally more than 200A and even 360A), one end of the direct current outgoing cable is connected to a direct current bus of an inverter, the other end of the direct current outgoing cable is buried and laid through a connector, once the direct current outgoing cable is grounded, unbalanced current can be generated between positive and negative wires of the cable, if the unbalanced current degree is serious, current backflow can occur, the inverter is stopped if the direct current outgoing cable is light, the cable is burnt if the direct current outgoing cable is heavy, and even the safety of the inverter and the junction box is influenced, so that the direct current outgoing cable needs to be grounded and detected.
The inverter in the existing photovoltaic power station is generally provided with a direct current side insulation failure warning function, the basic principle is that the direct current bus side of the inverter detects the insulation resistance value of the positive and negative buses to the ground, and gives a warning when the insulation resistance value is lower than a set value, but as a plurality of bus boxes are usually connected to the direct current buses of the inverter, the bus boxes and any position on any connected serial cable and outgoing cable can trigger the insulation failure warning of the inverter when the insulation failure to the ground occurs, the range is too wide, and the investigation difficulty is higher; the other detection scheme is to purchase an independent sensor, and mount the sensor in a junction box through a bracket and sleeve the sensor on a direct current outgoing cable, but the detection scheme can cause large occupied space, high cost and inconvenient wiring construction.
Disclosure of Invention
The utility model provides the waterproof connector with the direct-current cable grounding detection function, which has the advantages of simple structure, low cost, convenience in investigation and direct-current cable grounding detection function.
The waterproof connector with the direct-current cable grounding detection function comprises a main body, wherein a connecting hole for penetrating through the direct-current cable is formed in the main body, and the waterproof connector is characterized in that: the connecting end part of the main body is provided with a containing cavity, the containing cavity is filled with sealant after the current sensor is arranged in the containing cavity, and an interface connected with the current sensor is led out from the sealant.
It is further characterized by:
the main body is of a cylindrical structure, and the accommodating cavity is formed in the top end of the main body;
the outer wall of the upper part of the main body is provided with threads, and the lock nut is connected to the main body through the threads; the flange is connected to the outside of the main body;
the current sensor is connected with the external controller through an interface so as to transmit a detection signal to the controller through the interface;
the accommodating cavity is annularly arranged along the inner wall of the main body; the height of the sealant is higher than the height of the top end face of the main body.
The utility model has the beneficial effects that the direct-current cable grounding detection function is realized, the waterproof connector is integrated with the current sensor, after the direct-current cable is grounded, the grounding condition can be detected in real time through the current sensor, and the signal is transmitted in real time through the interface, so that the accurate and timely investigation is realized, the production cost is low, the occupied space is small, and the economic use value is better.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view of the present utility model;
fig. 3 is a top view of the present utility model.
Detailed Description
As shown in fig. 1 to 3, the waterproof connector with the function of detecting the grounding of the direct current cable of the utility model comprises a main body 1, wherein a connecting hole 2 for penetrating the direct current cable (not shown in the figure) is arranged in the main body 1, a containing cavity 3 is arranged at the connecting end part of the main body 1, a current sensor (not shown in the figure) is assembled in the containing cavity 3, and then a sealant 4 is poured into the containing cavity 3, and an interface 7 connected with the current sensor is led out from the sealant 4.
The main body 1 is in a cylindrical structure, and the accommodating cavity 3 is formed at the top end part of the main body 1; the outer wall of the upper part of the main body 1 is provided with threads, a lock nut 5 is connected to the main body 1 through threads, and the waterproof connector can be fixedly connected to a confluence box (not shown in the figure) through the lock nut 5 in a locking way; the outside of the main body 1 is connected with a flange 6; the current sensor is connected with the external controller through an interface 7 to transmit detection signals to the controller (not shown in the figure) through the interface 7, and the controller adopts existing devices; the containing cavity 3 is annularly arranged along the inner wall of the main body 1; the height of the poured sealant 4 is higher than the height of the top end surface of the main body 1.
The utility model has simple structure, low production cost and small occupied space, has waterproof function, the protection level can reach IP68, the current sensor is sealed in the waterproof connector by glue filling, after the direct current cable is connected with the waterproof connector, the direct current cable can be detected in real time through the current sensor, the more serious the grounding is, the larger the unbalanced current is, and according to industry experience, the current exceeding 10mA is detected by the current sensor once the current sensor is normal under 10mA, and the peripheral controller can receive the signal in real time, thereby facilitating the troubleshooting of the fault end.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a possess waterproof connector of direct current cable ground connection detection function, includes the main part, be provided with the connecting hole that is used for wearing to establish direct current cable in the main part, its characterized in that: the connecting end part of the main body is provided with a containing cavity, the containing cavity is filled with sealant after the current sensor is arranged in the containing cavity, and an interface connected with the current sensor is led out from the sealant.
2. The waterproof connector with a dc cable grounding detection function according to claim 1, wherein: the main body is of a cylindrical structure, and the accommodating cavity is formed in the top end portion of the main body.
3. The waterproof connector with a dc cable grounding detection function according to claim 1, wherein: the outer wall of the upper part of the main body is provided with threads, and the lock nut is connected to the main body through the threads; the main body is externally connected with a flange.
4. The waterproof connector with a dc cable grounding detection function according to claim 1, wherein: the current sensor is connected with the external controller through an interface so as to transmit detection signals to the controller through the interface.
5. The waterproof connector with a dc cable grounding detection function according to claim 1, wherein: the accommodating cavity is annularly arranged along the inner wall of the main body; the height of the sealant is higher than the height of the top end face of the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320908865.2U CN219717364U (en) | 2023-04-21 | 2023-04-21 | Waterproof connector with direct-current cable grounding detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320908865.2U CN219717364U (en) | 2023-04-21 | 2023-04-21 | Waterproof connector with direct-current cable grounding detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717364U true CN219717364U (en) | 2023-09-19 |
Family
ID=88000720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320908865.2U Active CN219717364U (en) | 2023-04-21 | 2023-04-21 | Waterproof connector with direct-current cable grounding detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717364U (en) |
-
2023
- 2023-04-21 CN CN202320908865.2U patent/CN219717364U/en active Active
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