CN210376646U - Power supply loop detection device - Google Patents
Power supply loop detection device Download PDFInfo
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- CN210376646U CN210376646U CN201920688710.6U CN201920688710U CN210376646U CN 210376646 U CN210376646 U CN 210376646U CN 201920688710 U CN201920688710 U CN 201920688710U CN 210376646 U CN210376646 U CN 210376646U
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- 238000001514 detection method Methods 0.000 title claims abstract description 76
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model discloses a power supply loop detection device, which comprises a first detection lead, a second detection lead, a power supply and a relay; the first detection lead and the second detection lead are used for being installed in an external cable, one end of the first detection lead and one end of the second detection lead are connected, and the other end of the first detection lead and the other end of the second detection lead are respectively connected to a first wiring terminal and a second wiring terminal of the power supply interface; the positive pole of the power supply is connected with one end of the control coil of the relay, and the other end of the control coil of the relay is connected with the first wiring terminal; the negative electrode of the power supply is connected with the second wiring terminal; one group of normally open contacts of the relay is used for being connected in series with a switching-on operation loop of power supply output, when an external cable is normally connected, the normally open contacts are closed to allow switching-on, and the other group of normally open contacts of the relay provides signal nodes for judging the normal signal of the external cable connection. The utility model discloses when the unexpected disconnection of whole cable can be solved, the reliability that the supply circuit detected has been improved greatly to the problem that can't detect.
Description
Technical Field
The utility model belongs to the technical field of boats and ships bank electricity uses, concretely relates to power supply loop detection device.
Background
The ship shore-based power supply technology is an alternative control technology for solving the problem of air pollution of ships in port. With the vigorous popularization of clean energy, the application of shore-based power supply technology in China is also actively promoted. In order to ensure the effectiveness and safety of power supply, detection of whether a shore power facility power supply detection cable is connected is generally required, a detection method in the prior art is usually only to install a position signal sensor at a connector, and after the connector is connected, position signal feedback is closed, but the method cannot judge whether the whole cable loop is normally connected.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a power supply loop detection device, when having solved the unexpected disconnection of whole cable, the reliability of detection has been improved greatly to the problem of unable detection.
In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
in a first aspect, the utility model provides a power supply loop detection device, which comprises a first detection wire, a second detection wire, a power supply and a relay;
the first detection lead and the second detection lead are used for being installed in an external cable, one end of the first detection lead and one end of the second detection lead are connected, and the other end of the first detection lead and the other end of the second detection lead are respectively connected to a first wiring terminal and a second wiring terminal of the power supply interface;
the positive electrode of the power supply is connected with one end of the control coil of the relay, and the other end of the control coil of the relay is connected with the first wiring terminal; the negative electrode of the power supply is connected with the second wiring terminal;
one group of normally open contacts of the relay is used for being connected in series with a switching-on operation loop of power supply output, when an external cable is normally connected, the normally open contacts are closed to allow switching-on, and the other group of normally open contacts of the relay provides signal nodes for judging the normal signal of the external cable connection.
Preferably, the length of the first and second detection wires is equal to the length of the external cable.
Preferably, the signal output by the power supply is a safe direct-current voltage
Preferably, the signal output by the power supply is a safe alternating voltage.
Preferably, the relay is of the type TGJC1-52ZD, and the coil voltage of the relay is DC 24V.
Preferably, the first and second sensing conductors are adapted to be mounted in an external cable, one end of each being connected at a power supply tail.
In a second aspect, the present invention provides a detection method for a detection device based on a power supply loop, comprising the following steps:
the external cable is inserted into the power supply interface, so that the first detection lead and the second detection lead are respectively connected with the first wiring terminal and the second wiring terminal;
when a conduction loop is formed among the power supply, the relay, the first connecting terminal, the second connecting terminal, the first detection lead and the second detection lead, two groups of normally open contacts of the relay are closed, one group of normally open contacts is connected in series with a closing operation loop of power supply output to allow closing, and the other group of the relay provides a signal node for judging that an external cable is connected with a normal signal;
when the external cable is disconnected, the loop between the first wiring terminal and the second wiring terminal is disconnected, so that the two groups of normally open contacts of the relay are disconnected, and the external closing operation loop and the signal node are disconnected.
Preferably, the length of the first and second detection wires is equal to the length of the external cable.
Preferably, the signal output by the power supply is a safe direct current voltage.
Preferably, the signal output by the power supply is a safe alternating voltage.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses can effectively solve the problem that can't detect when the unexpected disconnection of whole cable, also can be according to the demand simultaneously, break off the safety inspection return circuit in the power consumption side, promptly stop the power supply. Because the utility model discloses do not rely on software to judge the external output of control, consequently can improve whole power supply unit's reliability greatly.
Drawings
Fig. 1 is a schematic structural diagram of a power supply loop detection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.
Example 1
The embodiment of the utility model provides a power supply loop detection device, which comprises a first detection lead, a second detection lead, a power supply and a relay;
the first detection lead and the second detection lead are used for being installed in an external cable, one end of the first detection lead and one end of the second detection lead are connected at the tail end of a power supply, namely, at a power receiving position inside electric equipment at the tail end of the external cable, and the first detection lead and the second detection lead are in short circuit; the other ends of the first detection lead and the second detection lead are respectively connected to a first wiring terminal P1 and a second wiring terminal P2 of a power supply interface; the power supply interface is used as a power supply interface of a shore power facility in the practical application process, the external cable refers to a power supply cable, the first detection lead and the second detection lead are both installed in the external cable, and the lengths of the first detection lead and the second detection lead are both equal to the length of the external cable;
the positive electrode of the power supply is connected with one end of the control coil of the relay, and the other end of the control coil of the relay is connected with the first wiring terminal P1; the negative electrode of the power supply is connected with the second wiring terminal P2; preferably, the signal output by the power supply is a safe direct-current voltage, and a safe alternating-current voltage is used in special cases;
one group of normally open contacts (such as pins 8 and 12 of the relay in fig. 1) of the relay are used for being connected in series with a switching-on operation loop of power supply output, when an external cable is normally connected, the normally open contacts are closed to allow switching-on, and the other group of normally open contacts of the relay provide signal nodes (such as pins 5 and 9 of the relay in fig. 1) for judging that the external cable is connected with a normal signal; when the external cable is disconnected, the loop between the first connection terminal P1 and the second connection terminal P2 is disconnected, so that the two normally open contacts of the relay are both opened, and the external closing operation loop and the signal node are disconnected.
Example 2
The embodiment of the utility model provides a detection method based on detection device of power supply loop, including following step:
an external cable is plugged with a power supply interface, so that a first detection lead and a second detection lead are respectively connected with a first wiring terminal P1 and a second wiring terminal P2;
when a conduction loop is formed among the power supply, the relay, the first wiring terminal P1, the second wiring terminal P2, the first detection lead and the second detection lead, two groups of normally open contacts of the relay are closed, one group of normally open contacts is connected in series with a closing operation loop of power supply output to allow closing, and the other group of the relay provides a signal node for judging that an external cable is connected with a normal signal;
when the external cable is disconnected, the loop between the first connection terminal P1 and the second connection terminal P2 is disconnected, so that the two normally open contacts of the relay are both opened, and the external closing operation loop and the signal node are disconnected.
Preferably, the length of the first and second detection wires is equal to the length of the external cable.
Preferably, the signal output by the power supply is a safe direct-current voltage, and a safe alternating-current voltage is used in special cases.
In summary, the following steps:
the utility model discloses a power supply loop detection device and method can effectively solve the problem that can't detect when the unexpected disconnection of whole cable, also can be according to the demand simultaneously, breaks off the safety inspection return circuit in the power consumption side, promptly stops the power supply. Because the utility model discloses do not rely on software to judge the external output of control, consequently can improve whole power supply unit's reliability greatly
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A kind of power supply loop checkout gear, characterized by that: the device comprises a first detection lead, a second detection lead, a power supply and a relay;
the first detection lead and the second detection lead are used for being installed in an external cable, one end of the first detection lead and one end of the second detection lead are connected, and the other end of the first detection lead and the other end of the second detection lead are respectively connected to a first wiring terminal and a second wiring terminal of the power supply interface;
the positive electrode of the power supply is connected with one end of the control coil of the relay, and the other end of the control coil of the relay is connected with the first wiring terminal; the negative electrode of the power supply is connected with the second wiring terminal;
one group of normally open contacts of the relay is used for being connected in series with a switching-on operation loop of power supply output, when an external cable is normally connected, the normally open contacts are closed to allow switching-on, and the other group of normally open contacts of the relay provides signal nodes for judging the normal signal of the external cable connection.
2. A supply loop detection device as claimed in claim 1, wherein: the first and second sensing wires have a length equal to the length of the external cable.
3. A supply loop detection device as claimed in claim 1, wherein: and the signal output by the power supply is safe direct-current voltage.
4. A supply loop detection device as claimed in claim 1, wherein: and the signal output by the power supply is a safe alternating voltage.
5. A supply loop detection device as claimed in claim 1, wherein: the relay is in a model of TGJC1-52ZD, and the coil voltage of the relay is DC 24V.
6. A supply loop detection device as claimed in claim 1, wherein: the first detection lead and the second detection lead are used for being installed in an external cable, and one end of each of the first detection lead and the second detection lead is connected with the power supply tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688710.6U CN210376646U (en) | 2019-05-15 | 2019-05-15 | Power supply loop detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688710.6U CN210376646U (en) | 2019-05-15 | 2019-05-15 | Power supply loop detection device |
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| Publication Number | Publication Date |
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| CN210376646U true CN210376646U (en) | 2020-04-21 |
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| CN201920688710.6U Active CN210376646U (en) | 2019-05-15 | 2019-05-15 | Power supply loop detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095679A (en) * | 2019-05-15 | 2019-08-06 | 国电南瑞科技股份有限公司 | A kind of current supply circuit detection device and method |
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2019
- 2019-05-15 CN CN201920688710.6U patent/CN210376646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095679A (en) * | 2019-05-15 | 2019-08-06 | 国电南瑞科技股份有限公司 | A kind of current supply circuit detection device and method |
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