CN213661208U - Power distribution device and power distribution cabinet - Google Patents
Power distribution device and power distribution cabinet Download PDFInfo
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- CN213661208U CN213661208U CN202022616377.3U CN202022616377U CN213661208U CN 213661208 U CN213661208 U CN 213661208U CN 202022616377 U CN202022616377 U CN 202022616377U CN 213661208 U CN213661208 U CN 213661208U
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Abstract
The utility model relates to a distribution device and switch board, wherein, this distribution device includes the power connecting wire, the circuit breaker, at least one distribution switch and power lack the looks detection circuitry, this power connecting wire is used for connecting power supply, this power connecting wire is connected to the one end of this circuit breaker, this distribution switch is connected to the other end, this distribution switch is used for connecting consumer, this power lack looks detection circuitry is connected with this power connecting wire, be used for being connected under the unusual condition with this power supply at this power connecting wire, control this circuit breaker disconnection. Like this, can confirm whether this power connecting wire is connected with this power supply through this power open-phase detection circuitry and have unusually to can be under the unusual circumstances of this power connecting wire and this power supply connection of affirmation, this circuit breaker disconnection of control, thereby can effectively avoid the power open-phase to cause the phenomenon of consumer damage, also can effectively avoid the emergence of the casualties accident that causes because of the power open-phase.
Description
Technical Field
The disclosure relates to the technical field of power equipment, in particular to a power distribution device and a power distribution cabinet.
Background
Switch board (case) is as electrical equipment control center, is used for distributing the electric energy of last level circuit to the consumer nearby usually, installs all kinds of electrical components, instrument, switch and circuit in the switch board usually, the switch board trouble takes place occasionally, discovers through making statistics of the trouble, the distribution in-process, because of the power lacks the proportion of the fault frequency that leads to in total fault frequency very considerable, the power general lacks the looks not only can burn out the consumer, still can cause certain threat to staff's personal safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distribution device and switch board.
In order to achieve the above object, in a first aspect of the present disclosure, there is provided a power distribution apparatus, including a power connection line, a circuit breaker, at least one power distribution switch, and a power open-phase detection circuit, wherein the power connection line is used for connecting a power supply, one end of the circuit breaker is connected to the power connection line, the other end of the circuit breaker is connected to the power distribution switch, the power distribution switch is used for connecting a power consumption device,
the power supply open-phase detection circuit is connected with the power supply connecting wire and used for controlling the breaker to be disconnected under the condition that the power supply connecting wire is abnormally connected with the power supply.
Optionally, the power connection line is a three-phase connection line, and the power open-phase detection circuit is connected to the three-phase connection line respectively, and is configured to control the circuit breaker to open when the connection line of any one of the three phases is connected to the power supply abnormally.
Optionally, the power distribution apparatus further includes a ground line, and the power supply open-phase detection circuit is further connected to the ground line, and is configured to control the circuit breaker to open when it is determined that the ground line is abnormally connected to ground.
Optionally, the circuit breaker includes a voltage-loss release, the power supply open-phase detection circuit includes a first detection branch and a second detection branch, the first detection branch is formed by connecting a switch of a relay and a coil of the voltage-loss release in series, one end of the first detection branch is connected to a target power supply connection line, the target power supply connection line is any one phase of the three-phase connection lines, and the other end of the first detection branch is connected to the ground line; the second detection branch comprises a coil of the relay, and the coil of the relay is connected in series between the other two phases of the connecting wires except the target power supply connecting wire.
Optionally, the circuit breaker includes auxiliary contact, power phase failure detection circuitry still includes the demonstration branch road, show the branch road with first detection branch road is parallelly connected, show the branch road and include the display lamp, show a route the display lamp with auxiliary contact establishes ties and forms.
Optionally, the first detection branch is connected to the target power connection line through a first fuse.
Optionally, the second detection branch further includes a second fuse and a third fuse, one end of a coil of the relay is connected to one of the two other phases of the three-phase connection lines except the target power connection line through the second fuse, and the other end of the coil of the relay is connected to the other one of the two other phases of the three-phase connection lines except the target power connection line through the third fuse.
Optionally, the power connection line is connected to the circuit breaker through a fourth fuse.
Optionally, the power distribution device further comprises an alarm, wherein the alarm is connected with the power connecting line and used for alarming when the power connecting line is determined to be abnormally connected with the power supply.
In a second aspect of the present disclosure, there is provided a power distribution cabinet comprising a cabinet body and the power distribution apparatus of the first aspect above.
Above-mentioned technical scheme, through providing a distribution device, distribution device includes power connecting wire, circuit breaker, and at least one distribution switch and power lack the looks detection circuitry, power connecting wire is used for connecting power supply, the one end of circuit breaker is connected power connecting wire, the other end is connected distribution switch, distribution switch is used for connecting consumer, power lack looks detection circuitry with power connecting wire connects, is used for power connecting wire with power supply connects under the unusual condition, control the circuit breaker disconnection. Therefore, whether the power supply connecting line is connected with the power supply or not can be determined through the power supply open-phase detection circuit, and the circuit breaker can be controlled to be disconnected under the condition that the power supply connecting line is connected abnormally, so that the phenomenon that the power supply is open to the phase to cause the damage of electric equipment can be effectively avoided, and the occurrence of casualty accidents caused by the power supply being open to the phase can be effectively avoided.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram of a power distribution apparatus shown in an exemplary embodiment of the present disclosure;
FIG. 2 is a circuit diagram of a power distribution apparatus shown in the embodiment of FIG. 1 according to the present disclosure;
fig. 3 is a circuit diagram of a power distribution device shown in the embodiment of fig. 2 according to the present disclosure.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Before the detailed description of the specific embodiments of the present disclosure, the following description is first performed on the specific application scenario of the present disclosure, and the present disclosure can be applied to the power distribution process, and especially can be applied to the scenario of power distribution through a power distribution cabinet (box), and generally in the power distribution process, the abnormal connection between the power distribution cabinet and a power supply source is often caused due to negligence of workers or poor contact of a connection line, so that the phenomenon of phase loss of a power connection line in the power distribution cabinet occurs, and generally, the phase loss of the power connection line can not only burn out electric equipment, but also can cause casualty accidents of the workers.
In order to avoid the technical problem, the present disclosure provides a power distribution device and a power distribution cabinet, wherein, this power distribution device includes the power connecting wire, the circuit breaker, at least one distribution switch and power lack of phase detection circuitry, this power connecting wire is used for connecting power supply, this power connecting wire is connected to the one end of this circuit breaker, this distribution switch is connected to the other end, this distribution switch is used for connecting consumer, this power lack of phase detection circuitry is connected with this power connecting wire, be used for being connected under the unusual condition with this power supply at this power connecting wire, control this circuit breaker disconnection. Like this, can confirm whether this power connecting wire is connected with this power supply through this power open-phase detection circuitry and have unusually to can be under the unusual circumstances of this power connecting wire and this power supply connection of affirmation, this circuit breaker disconnection of control, thereby can effectively avoid the power open-phase to cause the phenomenon of consumer damage, also can effectively avoid the emergence of the casualties accident that causes because of the power open-phase.
FIG. 1 is a block diagram of a power distribution apparatus shown in an exemplary embodiment of the present disclosure; referring to fig. 1, the power distribution apparatus includes a power connection line L, a circuit breaker QF, at least one power distribution switch K1-Kn, and a power phase loss detection circuit 101, where the power connection line L is used to connect a power supply 102, one end of the circuit breaker QF is connected to the power connection line L, the other end is connected to the power distribution switch, the power distribution switch is used to connect an electric device, and the power phase loss detection circuit is connected to the power connection line, and is used to control the disconnection of the circuit breaker when the power connection line is connected to the power supply 102 abnormally.
In a possible implementation manner, the power supply open-phase detection circuit 101 may include a voltage detection device, and by detecting a voltage between the power supply connection line L and the ground, when the voltage is greater than zero, it may be determined that the power supply connection line L is normally connected to the power supply 102, and when the voltage is equal to zero, it may be determined that the power supply connection line L is abnormally connected to the power supply 102, so as to control the breaker QF to be disconnected, so as to avoid supplying power to the electrical equipment connected to the power distribution switch, thereby avoiding burning the electrical equipment, and also avoiding an occurrence of an unsafe accident.
In another possible implementation, referring to fig. 2, fig. 2 is a circuit diagram of a power distribution device according to the embodiment of the disclosure shown in fig. 1; the power connection line L is a three-phase connection line, which includes an L1-phase connection line, an L2-phase connection line and an L3-phase connection line, and the power phase-failure detection circuit 101 is connected to the three-phase connection line, and is configured to control the circuit breaker QF to be disconnected when the connection line of any one of the three phases is abnormally connected to the power supply. The power distribution device further comprises a grounding wire L0, and the power supply open-phase detection circuit 101 is further connected with the grounding wire L0 and used for controlling the breaker QF to be disconnected under the condition that the grounding wire is determined to be abnormally connected with the ground.
The circuit breaker QF comprises a voltage loss release, the power supply phase loss detection circuit 101 comprises a first detection branch 1011 and a second detection branch 1012, the first detection branch 1011 is formed by connecting a switch (which may be a normally closed contact or a normally open contact) of a relay KA and a voltage loss release coil of the circuit breaker QF in series, one end of the first detection branch 1011 is connected with a target power supply connection line, the target power supply connection line is any phase of the three-phase connection lines (for example, as shown in fig. 2, the target power supply connection line is a connection line connected with L1), and the other end of the first detection branch 1011 is connected with the ground line L0; the second detection branch 1012 includes a coil of the relay KA connected in series between the connection lines of the two phases other than the target power supply connection line among the connection lines of the three phases (in the fig. 2, the coil of the relay KA is connected in series between the L2-phase connection line and the L3-phase connection line).
It should be noted that, taking fig. 2 as an example for description, in an actual use process, when the connection between the L2 phase connection line and the power supply 102 is abnormal, or the connection between the L3 phase connection line and the power supply 102 is abnormal, the second detection branch 1012 is disconnected, so that the coil of the relay KA loses power, and when the coil of the relay KA loses power, the switch of the relay KA in the first detection branch 1011 is disconnected, so that the first detection branch 1011 is disconnected, the voltage-loss trip coil of the breaker QF loses power, and when the voltage-loss trip coil of the breaker QF loses power, the breaker QF is disconnected (when the breaker QF includes an auxiliary contact, both the main contact and the auxiliary contact of the breaker QF are disconnected), so that it is possible to avoid damaging the electric equipment connected to the at least one distribution switch in the case of power supply phase loss;
in addition, under the condition that the L1 phase connection line is abnormally connected with the power supply 102, if the switch of the relay KA is closed, the no-voltage tripper coil of the circuit breaker QF cannot get power, and the circuit breaker QF is in the no-voltage tripping state, so the circuit breaker QF cannot be closed, and under the condition that the L1 phase connection line is normally connected with the power supply 102, the switch of the relay KA is closed, the no-voltage tripper coil of the circuit breaker QF can be in the power-voltage state, and the circuit breaker QF is closed again at the moment, so the circuit breaker QF cannot be automatically disconnected, and power can be supplied to the electric equipment connected to the power distribution switch.
It should be noted that fig. 2 is only an exemplary illustration of the connection relationship between the power supply open-phase detection circuit 101 and the three-phase connection lines, wherein the connection relationship may also be that the target power supply connection line is an L2 connection line, and the coil of the relay KA is connected in series between an L1 connection line and an L3 connection line, or the target power supply connection line is an L3 connection line, and the coil of the relay KA is connected in series between an L1 connection line and an L2 connection line, where the connection relationship is any one of the above two connection relationships, the control principle in actual operation may refer to the control process shown in fig. 2, and the disclosure is not repeated herein.
Thus, whether the power connection line L is connected with the power supply 102 or not can be determined through the power open-phase detection circuit 101, and the breaker QF can be controlled to be disconnected under the condition that the power connection line L is determined to be connected with the power supply 102 abnormally, so that the phenomenon that the power equipment is damaged due to power open-phase can be effectively avoided, and casualty accidents caused by power open-phase can also be effectively avoided.
Fig. 3 is a circuit diagram of a power distribution apparatus according to the embodiment shown in fig. 2 of the present disclosure, referring to fig. 3, the circuit breaker QF may include an auxiliary contact, the power phase loss detection circuit 101 further includes a display branch 1013, the display branch 1013 is connected in parallel with the first detection branch 1011, the display branch 1013 includes a display lamp LD, and the display branch 1013 is formed by the display lamp LD being connected in series with the auxiliary contact.
The auxiliary contact can be a normally closed contact, and under the condition that a no-voltage release coil of the circuit breaker QF loses electricity, the auxiliary contact is opened, so that the display lamp LD is extinguished, under the condition that the no-voltage release coil of the circuit breaker QF is electrified, the auxiliary contact is closed, and at the moment, the display lamp LD is lightened, namely, when the display lamp LD is lightened, the circuit breaker QF can be represented to be normally closed, the power connection line L (including the L1 connection line, the L2 phase connection line and the L3 phase connection line) is normally connected with the power supply 102, and the circuit breaker QF is closed, so that the electric equipment cannot be damaged due to phase loss of the power supply; when the display lamp LD is extinguished, the connection between the power supply connection line L and the power supply 102 is characterized to be abnormal, and at this time, the circuit breaker QF cannot be normally closed, so that the circuit breaker QF is forcibly closed to cause damage to the electric equipment due to phase loss of the power supply.
Optionally, the first detection branch 1011 is connected to the target power connection line via a first fuse RF 1.
The target power connection line may be an L1 connection line, an L2 connection line, or an L3 connection line.
Optionally, the second detecting branch 1012 further includes a second fuse RF2 and a third fuse RF3, one end of the coil of the relay KA is connected to one of the connecting lines of the two phases other than the target power source connecting line among the connecting lines of the three phases through the second fuse RF2, and the other end of the coil of the relay KA is connected to the other one of the connecting lines of the two phases other than the target power source connecting line among the connecting lines of the three phases through the third fuse RF 3.
In the case where the target power source connection line is an L1 connection line, the second fuse RF2 is connected to an L2 connection line (or an L3 connection line), and the third fuse RF3 is connected to an L3 connection line (or an L2 connection line); in the case where the target power connection line is an L2 connection line, the second fuse RF2 is connected to an L1 connection line (or an L3 connection line), and the third fuse RF3 is connected to an L3 connection line (or an L1 connection line); under the condition that the target power supply connecting line is an L3 connecting line, the second fuse RF2 is connected to an L1 connecting line (or an L2 connecting line), and the third fuse RF3 is connected to an L2 connecting line (or an L1 connecting line), so that the phenomenon that the current in the second detection branch is too large and the relay is burnt out is avoided through the second fuse RF2 and the third fuse RF3, and the reliability of the power supply open-phase detection circuit can be effectively guaranteed.
Optionally, the power connection line is connected to the breaker QF through a fourth fuse RF 4.
It should be noted that the power connection line is connected to one end of the main contact of the circuit breaker QF through the fourth fuse RF4, and the other end of the main contact of the circuit breaker QF is connected to at least one of the power distribution switches; the phenomenon that the power connecting wire and the electric equipment are burnt out due to overlarge current flowing through the main contact of the circuit breaker QF is avoided through the fourth fuse RF4, and therefore the reliability of the power phase-lack detection circuit can be effectively guaranteed.
Optionally, the power distribution apparatus further includes an alarm 103, and the alarm 103 is connected to the power connection line and configured to alarm when it is determined that the power connection line is abnormally connected to the power supply 102.
The alarm 103 may be a 380V three-phase power failure, power failure and phase loss alarm existing in the market, that is, an alarm may be given when the power supply is detected to be disconnected from any one of the three-phase connection lines.
Therefore, under the condition that the power connecting line is abnormally connected with the power supply 102, the alarm can give an alarm to prompt a worker, and the worker is currently in a power phase failure state, so that the user experience can be effectively improved.
In another exemplary embodiment of the present disclosure, a power distribution cabinet is provided, including a cabinet and the power distribution apparatus described in any one of fig. 1 to 3 above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A power distribution device is characterized by comprising a power supply connecting wire, a circuit breaker, at least one power distribution switch and a power supply open-phase detection circuit, wherein the power supply connecting wire is used for connecting a power supply, one end of the circuit breaker is connected with the power supply connecting wire, the other end of the circuit breaker is connected with the power distribution switch, the power distribution switch is used for connecting electric equipment,
the power supply open-phase detection circuit is connected with the power supply connecting wire and used for controlling the breaker to be disconnected under the condition that the power supply connecting wire is abnormally connected with the power supply.
2. The power distribution apparatus according to claim 1, wherein the power connection lines are three-phase connection lines, and the power supply open-phase detection circuit is connected to each of the three-phase connection lines, and configured to control the circuit breaker to open in a case where the connection line of any one of the three phases is abnormally connected to the power supply.
3. The power distribution apparatus according to claim 2, further comprising a ground line, wherein the power open-phase detection circuit is further connected to the ground line, and configured to control the circuit breaker to open in a case where it is determined that the ground line is abnormally connected to the ground.
4. The power distribution device according to claim 3, wherein the circuit breaker comprises a voltage loss release, the power supply open-phase detection circuit comprises a first detection branch and a second detection branch, the first detection branch is formed by connecting a switch of a relay and a coil of the voltage loss release in series, one end of the first detection branch is connected with a target power supply connection line, the target power supply connection line is any phase of the three-phase connection lines, and the other end of the first detection branch is connected with the ground line; the second detection branch comprises a coil of the relay, and the coil of the relay is connected in series between the other two phases of the connecting wires except the target power supply connecting wire.
5. The electrical distribution apparatus of claim 4, wherein the circuit breaker includes an auxiliary contact, wherein the power supply open-phase detection circuit further includes a display branch, wherein the display branch is connected in parallel with the first detection branch, wherein the display branch includes a display light, and wherein the display branch is formed by connecting the display light in series with the auxiliary contact.
6. The electrical distribution apparatus of claim 4, wherein the first detection branch is connected to the target power connection line through a first fuse.
7. The power distribution apparatus according to claim 4, wherein the second detection branch further includes a second fuse and a third fuse, one end of the coil of the relay is connected to one of the two other phases of the connection lines of the three phases other than the target power source connection line through the second fuse, and the other end of the coil of the relay is connected to the other one of the two other phases of the connection lines of the three phases other than the target power source connection line through the third fuse.
8. The electrical distribution apparatus of claim 1, wherein the power connection line is connected to the circuit breaker through a fourth fuse.
9. The power distribution device according to any one of claims 1 to 8, further comprising an alarm connected to the power connection line for alarming in case of determining that the power connection line is abnormally connected to the power supply source.
10. An electrical distribution cabinet, characterized in that it comprises a cabinet body and an electrical distribution apparatus according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022616377.3U CN213661208U (en) | 2020-11-12 | 2020-11-12 | Power distribution device and power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022616377.3U CN213661208U (en) | 2020-11-12 | 2020-11-12 | Power distribution device and power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213661208U true CN213661208U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022616377.3U Active CN213661208U (en) | 2020-11-12 | 2020-11-12 | Power distribution device and power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213661208U (en) |
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2020
- 2020-11-12 CN CN202022616377.3U patent/CN213661208U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power distribution device and cabinet Effective date of registration: 20220307 Granted publication date: 20210709 Pledgee: China Minsheng Bank Co.,Ltd. Urumqi Branch Pledgor: Xinjiang Xuanli environmental protection energy Co.,Ltd. Registration number: Y2022650000005 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230821 Granted publication date: 20210709 Pledgee: China Minsheng Bank Co.,Ltd. Urumqi Branch Pledgor: Xinjiang Xuanli environmental protection energy Co.,Ltd. Registration number: Y2022650000005 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power distribution devices and cabinets Effective date of registration: 20230825 Granted publication date: 20210709 Pledgee: China Minsheng Bank Co.,Ltd. Urumqi Branch Pledgor: Xinjiang Xuanli environmental protection energy Co.,Ltd. Registration number: Y2023980053809 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |