CN209994157U - Improved circuit for permanent magnet type feed switch control loop - Google Patents
Improved circuit for permanent magnet type feed switch control loop Download PDFInfo
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- CN209994157U CN209994157U CN201921224613.8U CN201921224613U CN209994157U CN 209994157 U CN209994157 U CN 209994157U CN 201921224613 U CN201921224613 U CN 201921224613U CN 209994157 U CN209994157 U CN 209994157U
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Abstract
An improved circuit for a permanent magnet feed switch control loop, an intermediate relay ZJ having a normally open contact and a normally closed contact; a pair of nodes C and a pair of nodes D are respectively arranged on two branches where two ends of the first secondary winding are located; a pair of nodes A and a pair of nodes B are respectively arranged on two branches where two ends of the second secondary winding are located; the coil of the intermediate relay ZJ is connected between a pair of nodes A, and the pair of nodes A are respectively connected with a pair of nodes B through normally open contacts ZJ1-2 and ZJ 2-2; the pair of nodes C are respectively connected with the pair of nodes D through normally open contacts ZJ3-2 and ZJ 4-2; the pair of nodes B are respectively connected with the two ends of a 127V power supply on the load side through normally closed contacts ZJ1-1 and ZJ 2-1; a pair of nodes D are connected with two ends of a 36V power supply source on the load side through normally closed contacts ZJ3-1 and ZJ4-1 respectively. The circuit can ensure safe and reliable power supply of the underground substation of the coal mine.
Description
Technical Field
The utility model relates to an improved circuit for permanent magnetism formula feed switch control circuit.
Background
According to the requirements of new coal mine safety regulations and field production, a general low-voltage switch cabinet in a coal mine underground substation is replaced by a KBZ-400 permanent magnet feed switch. Meanwhile, in order to meet the safe power supply requirement of a mine and guarantee the stability and reliability of power supply, a coal mine underground substation mostly adopts a double-loop subsection mode to supply power, the whole power supply circuit is divided into a first-section low-voltage line 9 and a second-section low-voltage line 10, the first-section low-voltage line 9 and the second-section low-voltage line 10 are respectively connected with a first-section low-voltage line power supply 13 and a second-section low-voltage line power supply 14, each section of low-voltage line is provided with a power supply main switch 11, and a KBZ-400 permanent magnetic feed switch is installed between the two sections of low-voltage lines to serve as an interconnection switch 12. When the power supply of one section or two sections of low-voltage lines fails, the normal power supply of the other section of low-voltage lines can be quickly recovered only by disconnecting the main power supply switch 11 on the one section or two sections of low-voltage lines and then switching on the connection switch 12.
In the prior art, a control loop of a KBZ-400 permanent magnetic feed switch serving as an interconnection switch is in single-loop control, and only when the power supply side of the interconnection switch 12 is electrified, the control loop is electrified, and then the switch can be normally switched on, as shown in FIG. 2; if a fault occurs in one section of low-voltage line 9, when only two sections of low-voltage lines 10 supply power, after a main power supply switch 11 of the one section of low-voltage line 9 is disconnected, the one section of low-voltage line 9 does not have power, a control loop of a contact switch 12 does not have power, and the normal closing can not be carried out to recover the power supply when the closing is needed.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides an improved circuit for permanent magnetism formula feed switch control circuit, this circuit can effectively guarantee the safe and reliable power supply of colliery electric substation in the pit, can guarantee the normal power supply of whole circuit after arbitrary return circuit falls the electricity.
The utility model provides an improved circuit for permanent magnetism formula feed switch control circuit, including permanent magnetism formula feed switch circuit, permanent magnetism formula feed switch circuit includes control transformer, power module DY, permanent magnetism controller YZ, surge protector BJ, the load side that is used for the power side of being connected with one section low voltage circuit and is used for being connected with two-stage process low voltage circuit, control transformer's input has a primary winding, its output has two secondary winding, primary winding is connected with the power side, first secondary winding is connected with combined floodgate relay KA1, second secondary winding is connected with permanent magnetism controller YZ and power module DY respectively, power module DY is connected with the load side through surge protector BJ;
also comprises an intermediate relay ZJ;
the intermediate relay ZJ is provided with a coil, four groups of normally open contacts and four groups of normally closed contacts, wherein the four groups of normally open contacts are ZJ1-2, ZJ2-2, ZJ3-2 and ZJ4-2 respectively, and the four groups of normally closed contacts are ZJ1-1, ZJ2-1, ZJ3-1 and ZJ 4-1;
a pair of nodes C and a pair of nodes D are respectively arranged on two branches where two ends of the first secondary winding are located; a pair of nodes C is closer to the first secondary winding than a pair of nodes D;
a pair of nodes A and a pair of nodes B are respectively arranged on two branches where two ends of the second secondary winding are located; a pair of nodes a are closer to the second secondary winding than a pair of nodes B;
the coil of the intermediate relay ZJ is connected between a pair of nodes A, and the pair of nodes A are respectively connected with a pair of nodes B through normally open contacts ZJ1-2 and ZJ 2-2;
the pair of nodes C are respectively connected with the pair of nodes D through normally open contacts ZJ3-2 and ZJ 4-2;
the pair of nodes B are respectively connected with the two ends of a 127V power supply on the load side through normally closed contacts ZJ1-1 and ZJ 2-1;
a pair of nodes D are connected with two ends of a 36V power supply source on the load side through normally closed contacts ZJ3-1 and ZJ4-1 respectively.
Preferably, the surge protector BJ is of the type HJ-6800 II BY.
The utility model discloses an add auxiliary relay ZJ in permanent magnetism formula feed switch's control circuit, can be through the normally opening of auxiliary relay ZJ, the power supply of control circuit is guaranteed in the switching conversion of normally closed contact, thereby can guarantee as the normal action of contact switch between two sections low voltage circuit, when being applied to in the colliery power substation power supply system, can fall the back at arbitrary way low voltage circuit trouble, guarantee the quick effective recovery of another way low voltage circuit, and then can provide the powerful guarantee for power supply system power supply reliability, also can effectively reduce because of falling the operating time that the accident influences power supply system, can bring safer guarantee for maintaining and handling fault.
Drawings
FIG. 1 is a schematic diagram of a power supply system of a coal mine underground substation in the prior art;
FIG. 2 is a circuit schematic of a prior art KBZ-400 permanent magnet feed switch;
fig. 3 is a schematic circuit diagram of the present invention.
In the figure: 1. the power supply comprises a power supply side, 2, a load side, 3, a first secondary winding, 4, a second secondary winding, 5, nodes A and 6, nodes B and 7, nodes C and 8, nodes D and 9, a section of low-voltage line, 10, a section of low-voltage line, 11, a power supply main switch, 12, a communication switch, 13, a section of low-voltage line power supply, and 14, a section of low-voltage line power supply.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 3, an improved circuit for a permanent-magnet feed switch control loop comprises a permanent-magnet feed switch circuit, wherein the permanent-magnet feed switch circuit comprises a control transformer, a power module DY, a permanent-magnet controller YZ, a surge protector BJ, a power side 1 for connecting with a section of low-voltage line and a load side 2 for connecting with a section of low-voltage line, the input end of the control transformer is provided with a primary winding, the output end of the control transformer is provided with two secondary windings, the primary winding is connected with the power side 1, a first secondary winding 3 is connected with a closing relay KA1, a second secondary winding 4 is respectively connected with the permanent-magnet controller YZ and the power module DY, and the power module DY is connected with the load side 2 through the surge protector BJ;
also comprises an intermediate relay ZJ;
the intermediate relay ZJ is provided with a coil, four groups of normally open contacts and four groups of normally closed contacts, wherein the four groups of normally open contacts are ZJ1-2, ZJ2-2, ZJ3-2 and ZJ4-2 respectively, and the four groups of normally closed contacts are ZJ1-1, ZJ2-1, ZJ3-1 and ZJ 4-1;
two branches where two ends of the first secondary winding 3 are located are respectively provided with a pair of nodes C7 and a pair of nodes D8; the pair of nodes C7 is closer to the first secondary winding 3 than the pair of nodes D8;
two branches where two ends of the second secondary winding 4 are located are respectively provided with a pair of nodes A5 and a pair of nodes B6; the pair of nodes a5 is closer to the second secondary winding 4 than the pair of nodes B6;
the coil of the intermediate relay ZJ is connected between a pair of nodes A5, and a pair of nodes A5 are respectively connected with a pair of nodes B6 through normally open contacts ZJ1-2 and ZJ 2-2;
the pair of nodes C7 are connected through normally open contacts ZJ3-2 and ZJ4-2 and a pair of nodes D8 respectively;
a pair of nodes B6 are respectively connected with the two ends of a 127V power supply of a load side 2 through normally closed contacts ZJ1-1 and ZJ 2-1;
a pair of nodes D8 are connected to both ends of the 36V power supply on the load side 2 through normally closed contacts ZJ3-1 and ZJ4-1, respectively.
The model of the surge protector BJ is HJ-6800 II BY.
The working principle is as follows:
1. when the power supply of the first low-voltage line 9 is normal and the second low-voltage line 10 has a fault, the main power supply switch 11 on the second low-voltage line 10 is disconnected. The power supply side 1 of the interconnection switch 12 is electrified, the switch 1K in the control loop is switched on, the control transformer of the permanent magnet feed switch is electrified, the intermediate relay ZJ is switched on, the normally open contacts of the ZJ1-2, the ZJ2-2, the ZJ3-2 and the ZJ4-2 are closed, the control loop of the interconnection switch 12 is electrified, and the interconnection switch can be switched on as required to supply power to the two-section low-voltage line 10. Meanwhile, normally closed contacts ZJ1-1, ZJ2-1, ZJ3-1 and ZJ4-1 are disconnected, and a control loop power supply provided by a power supply main switch 11 on the two-section low-voltage line 10 is cut off.
2. When the power supply of the two sections of low-voltage lines 10 is normal, and the fault occurs in the first section of low-voltage line 9, after the power supply main switch 11 on the first section of low-voltage line 9 is disconnected, the intermediate relay ZJ is not electrified and does not attract, the ZJ1-2, the ZJ2-2, the ZJ3-2 and the ZJ4-2 are normally opened and disconnected, the control loop of the interconnection switch 12 supplies power to the control loop through the normally closed contacts ZJ1-1, ZJ2-1, ZJ3-1 and ZJ4-1 of the intermediate relay ZJ, and the power supply connected with the power supply main switch 11 on the two sections of low-voltage lines 10 supplies power to the control loop of the interconnection switch 12, so that the switching-on can be performed as required to.
Claims (2)
1. An improved circuit for a permanent-magnet feed switch control loop comprises a permanent-magnet feed switch circuit, wherein the permanent-magnet feed switch circuit comprises a control transformer, a power module DY, a permanent-magnet controller YZ, a surge protector BJ, a power side (1) used for being connected with a section of low-voltage line and a load side (2) used for being connected with a section of low-voltage line, the input end of the control transformer is provided with a primary winding, the output end of the control transformer is provided with two secondary windings, the primary winding is connected with the power side (1), a first secondary winding (3) is connected with a closing relay KA1, a second secondary winding (4) is respectively connected with the permanent-magnet controller YZ and the power module DY, and the power module DY is connected with the load side (2) through the surge protector BJ;
it is characterized by also comprising an intermediate relay ZJ;
the intermediate relay ZJ is provided with a coil, four groups of normally open contacts and four groups of normally closed contacts, wherein the four groups of normally open contacts are ZJ1-2, ZJ2-2, ZJ3-2 and ZJ4-2 respectively, and the four groups of normally closed contacts are ZJ1-1, ZJ2-1, ZJ3-1 and ZJ 4-1;
a pair of nodes C (7) and a pair of nodes D (8) are respectively arranged on two branches where two ends of the first secondary winding (3) are located; a pair of nodes C (7) is closer to the first secondary winding (3) than a pair of nodes D (8);
a pair of nodes A (5) and a pair of nodes B (6) are respectively arranged on two branches where two ends of the second secondary winding (4) are located; a pair of nodes A (5) is closer to the second secondary winding (4) than a pair of nodes B (6);
the coil of the intermediate relay ZJ is connected between a pair of nodes A (5), and the pair of nodes A (5) are respectively connected with a pair of nodes B (6) through normally open contacts ZJ1-2 and ZJ 2-2;
the pair of nodes C (7) are respectively connected with the pair of nodes D (8) through normally-open contacts ZJ3-2 and ZJ 4-2;
a pair of nodes B (6) are respectively connected with the two ends of a 127V power supply of a load side (2) through normally closed contacts ZJ1-1 and ZJ 2-1;
a pair of nodes D (8) are respectively connected with two ends of a 36V power supply of a load side (2) through normally closed contacts ZJ3-1 and ZJ 4-1.
2. The improved circuit for a permanent magnet feed switch control loop of claim 1, wherein said surge protector BJ is of the type HJ-6800 iiby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224613.8U CN209994157U (en) | 2019-07-31 | 2019-07-31 | Improved circuit for permanent magnet type feed switch control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224613.8U CN209994157U (en) | 2019-07-31 | 2019-07-31 | Improved circuit for permanent magnet type feed switch control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209994157U true CN209994157U (en) | 2020-01-24 |
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ID=69297955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921224613.8U Expired - Fee Related CN209994157U (en) | 2019-07-31 | 2019-07-31 | Improved circuit for permanent magnet type feed switch control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209994157U (en) |
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2019
- 2019-07-31 CN CN201921224613.8U patent/CN209994157U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 Termination date: 20200731 |