CN214227934U

CN214227934U - Economical single-phase dual power supply switching module

Info

Publication number: CN214227934U
Application number: CN202022866400.4U
Authority: CN
Inventors: 张顺利
Original assignee: Huaxi Energy Engineering Co ltd
Current assignee: Huaxi Energy Engineering Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-09-17
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses an economic single-phase dual power supply switching module, including auxiliary relay ZJ, auxiliary relay ZJ's coil one end is connected with power input end L1 and auxiliary relay ZJ's contact 14 respectively, auxiliary relay ZJ's the coil other end is connected with power input end N1 and auxiliary relay ZJ's contact 44 respectively, auxiliary relay ZJ's contact 13 is connected with power output end L and auxiliary relay ZJ's contact 21 respectively, auxiliary relay ZJ's contact 43 is connected with power output end N and auxiliary relay ZJ's contact 31 respectively, auxiliary relay ZJ's contact 22 connects power input end L2, auxiliary relay ZJ's contact 32 connects power input end N2. The utility model discloses obtain very big reduction in the cost, be applicable to the place that requires not high to dual supply switching real-time, have higher economic nature and practical popularization nature.

Description

Economical single-phase dual power supply switching module

Technical Field

The utility model relates to a power technical field, concretely relates to single-phase dual power supply of economical switches module.

Background

In auxiliary workshops such as a water pump supply room of a power plant, a pre-factory area and the like, a 380V power center (PC section) low-voltage power distribution system adopts single-bus sectional wiring and is provided with a sectional breaker. When the circuit breaker normally operates, the two power supplies supply power simultaneously, and the sectional circuit breaker is disconnected. The auxiliary workshop is far away from the main workshop and is not provided with a direct-current power supply system, and a 380V power center (PC section) generally adopts a single-phase alternating-current 220V control power supply. When any one power supply fails or has power failure, the sectionalized circuit breaker is manually closed, and the other power supply is switched to carry out full load operation. The two incoming line circuit breakers and the segmented circuit breakers are electrically interlocked, and only two circuit breakers can be combined under any condition.

When an upstream power supply of one section of a bus in a 380V power center (PC section) trips, an incoming line breaker trips, and the section of the bus loses power supply. The AC control power supply of the sectional breaker needs to be switched to another section of bus for power supply, so that the requirement of the operating power supply of the sectional breaker can be met.

SUMMERY OF THE UTILITY MODEL

The aforesaid is not enough among the prior art, the utility model provides a pair of single-phase dual power supply switching module of economical has solved the problem that traditional power supply switching module is complicated, the cost is higher.

In order to achieve the purpose of the invention, the utility model adopts the technical scheme that: the utility model provides a single-phase dual power supply of economic type switches module, includes auxiliary relay ZJ, auxiliary relay ZJ's coil one end is connected with power input L1 and auxiliary relay ZJ's contact 14 respectively, auxiliary relay ZJ's the coil other end is connected with power input N1 and auxiliary relay ZJ's contact 44 respectively, auxiliary relay ZJ's contact 13 is connected with power output L and auxiliary relay ZJ's contact 21 respectively, auxiliary relay ZJ's contact 43 is connected with power output N and auxiliary relay ZJ's contact 31 respectively, auxiliary relay ZJ's contact 22 connects power input L2, auxiliary relay ZJ's contact 32 connects power input N2.

Further: the power input ends L1 and N1 and the power input ends L2 and N2 are connected with a PC section of a 380V power center.

Further: the

contacts

13 and 14, and the

contacts

43 and 44 of the intermediate relay ZJ are all moving contacts.

Further: the

contacts

21 and 22, and the

contacts

31 and 32 of the intermediate relay ZJ are all open contacts.

Further: the dual power switching module has a package size of 116 × 90 mm.

Further: the power output L, N obtains control power through a dual power switching module.

The utility model has the advantages that: the utility model discloses only adopt single auxiliary relay, constantly at the power break-make through relay and auxiliary contact, normally open contact and normally closed contact are got the electricity or are lost the electricity and accomplish the contact switching in the twinkling of an eye at the relay to reach the switching power supply operation of two way powers.

The utility model discloses a power module reliability that pure relay switches is high, has reliably solved 380V power center (PC section) segmentation circuit breaker circuit control power's maneuverability from the technique. From the economic perspective, compare and adopt two moulded case circuit breakers + dual supply automatic switching module or dual supply automatic switching device ATS, obtain very big reduction in the cost, be applicable to the place that the dual supply switching real-time requirement is not high, have higher economic nature and practical popularization nature.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention;

fig. 2 is a diagram of the overall dimension of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1, an economical single-phase dual power switching module includes an intermediate relay ZJ, one end of a coil of the intermediate relay ZJ is connected to a power input terminal L1 and a contact 14 of the intermediate relay ZJ, the other end of the coil of the intermediate relay ZJ is connected to a power input terminal N1 and a contact 44 of the intermediate relay ZJ, a contact 13 of the intermediate relay ZJ is connected to a power output terminal L and a contact 21 of the intermediate relay ZJ, a contact 43 of the intermediate relay ZJ is connected to a power output terminal N and a contact 31 of the intermediate relay ZJ, a contact 22 of the intermediate relay ZJ is connected to a power input terminal L2, and a contact 32 of the intermediate relay ZJ is connected to a power input terminal N2.

In one embodiment of the present invention, the power input terminals L1, N1 and the power input terminals L2, N2 are all connected to the PC section of the 380V power center.

In an embodiment of the present invention, the

contacts

13 and 14 and the

contacts

43 and 44 of the intermediate relay ZJ are moving contacts.

In an embodiment of the present invention, the contact 21 and the contact 22 of the intermediate relay ZJ and the contact 31 and the contact 32 are all break contacts.

In an embodiment of the present invention, as shown in fig. 2, the package size of the dual power switching module is 116 × 90 mm.

In an embodiment of the present invention, the power output L, N obtains control power through the dual power switching module.

The utility model discloses a theory of operation does:

(1) when the input power supply L1 and N1 loops are electrified, voltage is applied to two ends of a ZJ coil of the intermediate relay, after the coil is electrified, the ZJ starts, the movable contact points (13-14, 43-44) of the ZJ coil are closed, the movable contact points (21-22,31-32) are opened, and at the moment, the power supply output end (L, N) is powered by L1 and N1.

(2) When the input power supply L2 and N2 loops are electrified, no voltage exists at two ends of a coil of the intermediate relay ZJ, after the coil is electrified, the ZJ is not started, the break contacts (21-22 and 31-32) of the ZJ are closed, the make contacts (13-14 and 43-44) are opened, and at the moment, the power supply output end (L, N) is powered by L2 and N2.

(3) Therefore, when any input power supply is electrified, the power supply output end (L, N) can obtain a control power supply through the dual power supply switching module.

The utility model discloses constitute by single auxiliary relay and auxiliary contact. Through the power supply switching module, after a bus at one section of a 380V power center (PC section) loses voltage, the auxiliary contact of the intermediate relay is automatically switched to the voltage power supply of the bus at the other section of the PC section, so that the reliable power supply of a control power supply of the sectional circuit breaker and components such as a measuring instrument in a cabinet is ensured, and the normal opening and closing operation requirement of a circuit of the sectional circuit breaker is met.

The utility model discloses only adopt single auxiliary relay, constantly at the power break-make through relay and auxiliary contact, normally open contact and normally closed contact are got the electricity or are lost the electricity and accomplish the contact switching in the twinkling of an eye at the relay to reach the switching power supply operation of two way powers.

Claims

1. The utility model provides an economic single-phase dual power supply switching module which characterized in that, includes auxiliary relay ZJ, auxiliary relay ZJ's coil one end is connected with power input L1 and auxiliary relay ZJ's contact 14 respectively, auxiliary relay ZJ's coil other end is connected with power input N1 and auxiliary relay ZJ's contact 44 respectively, auxiliary relay ZJ's contact 13 is connected with power output L and auxiliary relay ZJ's contact 21 respectively, auxiliary relay ZJ's contact 43 is connected with power output N and auxiliary relay ZJ's contact 31 respectively, auxiliary relay ZJ's contact 22 connects power input L2, auxiliary relay ZJ's contact 32 connects power input N2.

2. The economical single-phase dual-power switching module as claimed in claim 1, wherein the power input terminals L1, N1 and the power input terminals L2, N2 are all connected to a PC segment of a 380V power center.

3. The economical single-phase dual-power switching module of claim 1, wherein the contacts 13 and 14 of the intermediate relay ZJ and the contacts 43 and 44 are dynamic contacts.

4. The economical single-phase dual power switching module of claim 1, wherein the contacts 21 and 22 of the intermediate relay ZJ and the contacts 31 and 32 are all break contacts.

5. The economical single-phase dual power switching module of claim 1, wherein the dual power switching module package size is 116 x 90 mm.

6. The economical single-phase dual power switching module of claim 1, wherein the power output L, N is controlled by the dual power switching module.