CN107329031B - Contact sequencing device - Google Patents
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- CN107329031B CN107329031B CN201710575961.9A CN201710575961A CN107329031B CN 107329031 B CN107329031 B CN 107329031B CN 201710575961 A CN201710575961 A CN 201710575961A CN 107329031 B CN107329031 B CN 107329031B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention relates to a contact sequencing device, and relates to the technical field of automatic testing. The technical scheme mainly adopted is as follows: a contact sequencing device, comprising: a common terminal pin, N terminal pins, a sequencing circuit and a display module; the common terminal wire column is used for connecting a common connecting end of the circuit breaker, and the first binding post to the N binding post of the N binding posts are sequentially connected with M alarming connecting points for sequentially alarming the circuit breaker in the driving pressure reducing process; the display module is respectively connected with the output end of the first logic circuit to the output end of the N logic circuit and used for displaying the connection sequence from the first logic circuit to the N logic circuit; wherein N is a positive integer greater than or equal to 3, and M is a positive integer greater than or equal to 2 and less than or equal to N. The contact sequencing device provided by the invention can automatically and rapidly sequence the connection sequence of the alarm contacts of the hydraulic high-voltage circuit breaker.
Description
Technical Field
The invention relates to the technical field of automatic testing, in particular to a contact sequencing device.
Background
The circuit breaker is a switch for breaking a circuit, switching on a load circuit, and breaking a fault circuit, which can prevent an accident from expanding and ensure safe operation, so that the circuit breaker is widely applied, particularly in a transformer substation, a high-voltage circuit breaker is often used to ensure safe operation of the transformer substation.
The high-voltage circuit breaker is of a more common type, and can work normally only when certain hydraulic pressure is met, so that the high-voltage circuit breaker is provided with a plurality of alarm contacts with different pressures, such as a locking reclosing connection point, a locking closing connection point, a locking separating connection point and the like.
However, in the prior art, all the alarm joints of the hydraulic high-voltage circuit breaker are manually operated, and the alarm joints are tested by gradually reducing the hydraulic pressure supplied to the high-voltage circuit breaker by staff, so that the testing process is long in time, and the testing process is complex in operation and low in efficiency.
Disclosure of Invention
The invention mainly aims to provide a novel structure of a contact sequencing device, which aims to solve the technical problem of automatically and rapidly sequencing the connection sequence of alarm contacts of a hydraulic high-voltage circuit breaker.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. According to the present invention, a junction sequencing device includes:
the circuit breaker comprises a public terminal wire column and N binding posts, wherein the public terminal wire column is used for connecting a public connecting end of the circuit breaker, and the first binding post to the N binding post of the N binding posts are sequentially connected with M alarming connecting points of the circuit breaker, which sequentially alarm in the driving pressure reducing process;
the sequencing circuit comprises N logic circuits, each logic circuit comprises N branches, the input ends of a first logic circuit in the N logic circuits are sequentially connected with a first binding post to an N binding post, each branch is provided with a relay, and each relay comprises N normally closed switches and at least one normally open switch;
the display module is respectively connected with the output end of the first logic circuit to the output end of the N logic circuit and used for displaying the connection sequence from the first logic circuit to the N logic circuit;
the input end of the N-1 normally closed switch of the relay of the first branch of the first logic circuit is respectively arranged on the first branch of the second logic circuit to the N-1 th branch of the first logic circuit, the N-1 th branch of the first logic circuit is analogized to the N-1 th branch of the first logic circuit in the connection mode, the input end of the N-th branch of the first logic circuit is connected with one normally closed switch of the relay of the N-1 th branch of the first logic circuit, and the normally open switch of the relay of the first branch of the first logic circuit to the normally open switch of the relay of the N-th branch of the first logic circuit forms the output end of the first logic circuit;
and the second logic circuit to the Nth logic circuit are arranged according to the logic mode of the first logic circuit;
wherein N is a positive integer greater than or equal to 3, and M is a positive integer greater than or equal to 2 and less than or equal to N.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
Preferably, the number of the binding posts is 4, a first binding post of the 4 binding posts is used for being connected with a locking reclosing alarm connection point of the circuit breaker, a second binding post is used for being connected with a locking closing alarm connection point of the circuit breaker, a third binding post is used for being connected with a first locking separating alarm connection point of the circuit breaker, and a fourth binding post is used for being connected with a second locking separating alarm connection point of the circuit breaker.
Preferably, the junction sequencing device comprises 4 logic circuits, wherein each logic circuit comprises 4 branches, and the input ends of the first logic circuit to the input ends of the 4 th logic circuit are sequentially connected with the first binding post to the 4 th binding post;
the relay comprises 4 normally closed switches and at least one normally open switch.
Preferably, in the aforementioned contact sequencing device, two relays are disposed on each branch, and the two relays are connected in series, and the relays are two-open and two-close relays.
Preferably, the aforementioned junction sequencing device, wherein the display module includes N BCD decoders and N digital display tubes;
the input ends of the N BCD decoders are respectively connected with the output ends of the N logic circuits, and the output ends of the N BCD decoders are respectively connected with the N digital display tubes and are used for displaying the conduction sequence of the N logic circuits of the sequencing circuit through the digital display tubes.
Preferably, the aforementioned junction sequencing device, wherein the display module comprises 4 BCD decoders and 4 digital display tubes;
the input ends of the 4 BCD decoders are respectively connected with the output ends of the 4 logic circuits, and the output ends of the 4 BCD decoders are respectively connected with the 4 digital display tubes and are used for displaying the conduction sequence of a locking reclosing alarm connection point of the circuit breaker, a locking closing alarm connection point of the circuit breaker, a first locking opening alarm connection point of the circuit breaker and a second locking opening alarm connection point of the circuit breaker.
Preferably, in the aforementioned junction sequencing device, the output end of the first logic circuit includes a normally open switch of the relay of the first branch of the first logic circuit to a normally open switch of the relay of the 4 th branch;
the normally open switch output end of the relay of the third branch of the first logic circuit is connected with the normally open switch output end of the relay of the first branch of the first logic circuit through a first diode, and then is connected with the input end of the BCD decoder;
the normally open switch output end of the relay of the third branch of the first logic circuit is connected with the normally open switch output end of the relay of the second branch of the first logic circuit through a second diode, and then is connected with the input end of the BCD decoder;
the connection mode from the output end of the second logic circuit to the output end of the fourth logic circuit and the input end of the BCD decoder is set according to the connection mode from the output end of the first logic circuit to the input end of the BCD decoder.
Preferably, the aforementioned junction sequencing device further comprises:
and the power supply is connected with the sequencing circuit and the display module and is used for supplying power to the contact sequencing device.
Preferably, the aforementioned junction sequencing device, wherein the power source is a direct current power source, and is powered by a dry battery.
Preferably, the aforementioned junction sequencing device further comprises:
the utility model discloses a portable electronic device, including casing, public termination terminal and N terminal, sequencing circuit, display module, power supply, the casing, public termination terminal and N terminal all set up on the casing surface, sequencing circuit sets up inside the casing, display module sets up on the surface of casing, the power setting is in the inside of casing.
By means of the technical scheme, the contact sequencing device has at least the following advantages:
in the technical scheme of the invention, the contact sequencing device is provided with N binding posts, and under the cooperation of a sequencing circuit, the connection sequence of the alarm contacts of the circuit breaker with the number of the alarm contacts of M can be detected. Compared with the prior art, the test of each alarm contact of the hydraulic high-voltage circuit breaker is manually operated, the alarm contact is tested by gradually reducing the hydraulic pressure supplied to the high-voltage circuit breaker by a worker, the test process is long in time, the operation of the test process is complex, and the efficiency is low. The contact sequencing device provided by the invention can directly reduce the hydraulic pressure of the circuit breaker from the optimal working pressure to zero pressure, and then can detect the connection sequence of the alarm contacts of all the circuit breakers at one time, so that the detection speed is high, the efficiency is high, the operation of staff is not needed in the detection process, and the automation degree is high.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an electrical connection structure of a contact sequencing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a contact sequencing device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the connection of a sequencing circuit of a contact sequencing device according to an embodiment of the present invention;
fig. 4 is a schematic connection diagram of a display module of a contact sequencing device according to an embodiment of the invention.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the invention, the following detailed description refers to the specific implementation, structure, characteristics and effects of the contact sequencing device according to the present invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
As shown in fig. 1 and 2, a junction sequencing device according to an embodiment of the present invention includes: a common terminal stud 1 and N studs 2, a sequencing circuit 3 and a display module 4; the public terminal wire column 1 is used for connecting a public connection end 71 of the circuit breaker 7, and the first binding post to the Nth binding post of the N binding posts 2 are sequentially used for being connected with M alarming connection points of the circuit breaker 7, which sequentially alarm in the driving pressure reducing process; the sequencing circuit 3 comprises N logic circuits, each logic circuit comprises N branches, the input end of a first logic circuit in the N logic circuits is connected with a first binding post to an N binding post in sequence from the input end of the N logic circuits to the input end of the N logic circuits, each branch is provided with a relay, and each relay comprises N normally closed switches and at least one normally open switch; the display module is respectively connected with the output end of the first logic circuit to the output end of the N logic circuit and used for displaying the connection sequence from the first logic circuit to the N logic circuit; the input end of the N-1 normally closed switch of the relay of the first branch of the first logic circuit is connected with one normally closed switch of the relay of the N-1 normally closed switch of the relay of the first branch of the first logic circuit, the normally open switch of the relay of the first branch of the first logic circuit is respectively arranged on the first branch of the second logic circuit to the first branch of the N-1 logic circuit, the normally open switch of the relay of the first branch of the first logic circuit is connected with the normally closed switch of the relay of the N-1 logic circuit, and the normally open switch of the relay of the first branch of the first logic circuit to the normally open switch of the relay of the N-1 logic circuit forms the output end of the first logic circuit; the second logic circuit to the N logic circuit are arranged according to the logic mode of the first logic circuit; wherein N is a positive integer greater than or equal to 3, and M is a positive integer greater than or equal to 2 and less than or equal to N.
Specifically, the contact sequencing device provided by the invention can sequence the sequence of the connection points of the alarm for the circuit breakers with the number of the connection points of the alarm being less than or equal to N. The invention provides a using mode and a using principle of a contact sequencing device: firstly, connecting a plurality of alarm connection points of a circuit breaker with a first binding post to an N binding post in the order from big to small in pressure when the alarm connection points are communicated; then, pressing and storing energy for the breaker; after the energy storage is finished, the circuit breaker is subjected to pressure relief, so that the circuit breaker is reduced to zero pressure from normal working pressure, M alarm connection points of the circuit breaker are respectively communicated in the process, every time one alarm connection point is communicated, logic circuits connected behind corresponding connection posts of the circuit breaker are communicated, in the process that the logic circuits are sequentially communicated, a first branch of a first communicated P-th logic circuit (P is a positive integer less than or equal to N) is communicated, meanwhile, relays on a first branch of the first logic circuit are communicated, at the moment, normally-closed switches of relays on the first branch are opened, namely all the first branches of other logic circuits except the P-th logic circuit are opened, a normally-open switch of the first branch of the P-th logic circuit is opened, and finally, a normally-open switch of the relay of the first branch of the P-th logic circuit positioned at an output end is closed, and a signal is correspondingly displayed in a display module, for example, a display numeral 1 is displayed; by analogy, the logic circuits correspondingly connected with the M alarm connection points of the circuit breaker are respectively communicated, and the sequence of each logic circuit when being communicated is displayed through the display module, so that the measurement of the communication sequence of the M alarm connection points is realized; finally, comparing whether the sequence of the communication of the M alarm points of the circuit breaker is the same as the sequence of the alarm points of the circuit breaker in the pressure drop process, if different, proving that the connection of the internal circuit of the circuit breaker is wrong, deducing which two alarm points are wrong according to the sequencing result, and guiding the subsequent maintenance of the circuit breaker.
In the technical scheme of the invention, the contact sequencing device is provided with N binding posts, and under the cooperation of a sequencing circuit, the connection sequence of the alarm contacts of the circuit breaker with the number of the alarm contacts of M can be detected. Compared with the prior art, the test of each alarm contact of the hydraulic high-voltage circuit breaker is manually operated, the alarm contact is tested by gradually reducing the hydraulic pressure supplied to the high-voltage circuit breaker by a worker, the test process is long in time, the operation of the test process is complex, and the efficiency is low. The contact sequencing device provided by the invention can directly reduce the hydraulic pressure of the circuit breaker from the optimal working pressure to zero pressure, and then can detect the connection sequence of the alarm contacts of all the circuit breakers at one time, so that the detection speed is high, the efficiency is high, the operation of staff is not needed in the detection process, and the automation degree is high.
As shown in fig. 2, in the implementation, the number of the best terminals is 4, the first terminal 21 of the 4 terminals is used for being connected with a locking reclosing alarm connection point 72 of the circuit breaker 7, the second terminal 22 is used for being connected with a locking closing alarm connection point 73 of the circuit breaker 7, the third terminal 23 is used for being connected with a first locking separating alarm connection point 74 of the circuit breaker 7, and the fourth terminal 24 is used for being connected with a second locking separating alarm connection point 75 of the circuit breaker 7.
Specifically, since the hydraulic circuit breaker commonly used in the prior art is of a structure of 4 alarm connection points, the number of the binding posts is optimally set to be 4; meanwhile, 4 logic circuits are arranged in the contact sequencing device provided by the invention, so that the contact sequencing device provided by the invention is smaller in size and convenient for users to carry and operate.
In the embodiment, the contact sequencing device has a structure with 4 binding posts, as shown in fig. 3, the sequencing circuit preferably includes 4 logic circuits, each logic circuit includes 4 branches, and the input ends of the first logic circuit 31, the second logic circuit 32, the third logic circuit 33 and the fourth logic circuit 34 are sequentially connected to the first binding post 21, the second binding post 22, the third binding post 23 and the fourth binding post 24; the relay comprises 4 normally closed switches and at least one normally open switch. As shown in fig. 3 and 4, the display module 4 is respectively connected to the output terminals of the first logic circuit 31, the second logic circuit 32, the third logic circuit 33 and the fourth logic circuit 34, for displaying the connection sequence from the first logic circuit 31 to the fourth logic circuit 34; the relay input end of the first branch 311 of the first logic circuit 31 is connected with the first binding post 21, one normally closed switch of the relay of the first branch 311 of the first logic circuit 31 is arranged at the input end of the second branch 312 of the first logic circuit 31, 3 normally closed switches of the relay of the first branch 311 of the first logic circuit 31 are respectively arranged on the first branch of the second logic circuit 32 to the first branch of the fourth logic circuit 34, and analogize to the third branch 313 of the first logic circuit 31 in the connection way, the input end of the fourth branch 314 of the first logic circuit 31 is connected with one normally closed switch of the relay of the third branch 313 of the first logic circuit 31, and the normally open switch of the relay of the first branch 311 of the first logic circuit 31 and the normally open switch of the relay of the fourth branch 314 of the first logic circuit 31 form the output end of the first logic circuit 31; and, the second logic circuit 32 to the fourth logic circuit 34 are arranged in a logical manner of the first logic circuit 31.
According to the above logic manner, a sequencing circuit specifically shown in fig. 3 can be obtained, wherein the first branch 311 of the first logic circuit 31 includes two relays 1A1 and 1A2 connected in series, and the two relays 1A1 and 1A2 include two normally closed switches 1A1 and two normally closed switches 1A2, and the connection manners of these switches are shown in fig. 3; the second branch 312 of the first logic circuit 31 comprises two relays 2A1 and 2A2 connected in series, the two relays 2A1 and 2A2 comprise two normally closed switches 2A1 and 2A2, and the connection manner of these normally closed switches can also be shown in fig. 3; the third branch 313 of the first logic circuit 31 comprises two relays 3A1 and 3A2 connected in series, the two relays 3A1 and 3A2 comprising two normally closed switches 3A1 and two normally closed switches 3A2, the connection of which can also be seen from fig. 3; the fourth branch 314 of the first logic circuit 31 comprises two relays 4A1 and 4A2 connected in series, the two relays 4A1 and 4A2; in summary, the connection modes of the first logic circuit 31, the second logic circuit 32, the third logic circuit 33 and the fourth logic circuit 34 are the same as those of the first logic circuit 31, and as shown in fig. 3, the connection modes of the relays in the second logic circuit 32, the third logic circuit 33 and the fourth logic circuit 34 are the same as those of the first logic circuit 31, and only the names of the relays and the names of the relay switches are different, which can be understood from fig. 3, and the connection modes of the relays in the second logic circuit 32, the third logic circuit 33 and the fourth logic circuit 34 will not be described in detail.
Further, for the logic circuit containing 4 branches, two relays are preferably arranged on each branch and are connected in series, and the relays are two-opening and two-closing relays, so that the volume is small, the price is low, the whole volume of the logic circuit formed by two-opening and two-closing relays is small, and even if the number of the relays is 32 by adding up 4 logic circuits, the whole volume of a sequencing circuit is small, the whole volume of a contact sequencing device is small, the carrying of a user is convenient, and the use is more convenient.
As shown in fig. 4, in the implementation, the display module 4 includes N BCD decoders 41 and N digital display tubes 42; the input ends of the N BCD decoders 41 are respectively connected with the output ends of the N logic circuits, and the output ends of the N BCD decoders 41 are respectively connected with N digital display tubes 42, so that the turn-on sequence of the N logic circuits of the sequencing circuit is displayed through the digital display tubes 42. The BCD decoder used by the contact sequencing device is a commonly used decoder in the prior art and can be purchased directly in the market.
The optimal structure form of the display module is a structure form matched with the structure form of the sequencing device with 4 binding posts, namely the display module matched with a sequencing circuit with 4 logic circuits. As shown in fig. 4, in the implementation, for the case of the above 4 logic circuits, the display module 4 also includes 4 BCD decoders 41 and 4 digital display tubes 42; the input ends of the 4 BCD decoders 41 are respectively connected with the output ends of the 4 logic circuits, and the output ends of the 4 BCD decoders 41 are respectively connected with the 4 digital display tubes 42 and are used for displaying the conduction sequence of a locking reclosing alarm connection point of the circuit breaker, a locking closing alarm connection point of the circuit breaker, a first locking opening alarm connection point of the circuit breaker and a second locking opening alarm connection point of the circuit breaker. Specifically, the 4 BCD decoders correspond to the 4 logic circuits and are mainly applied to sequencing work of the circuit breaker with 4 alarm connection points, the BCD decoders perform decoding work by receiving electric signals conducted by different branches of the 4 logic circuits, then the digital display tube is driven to display sequential numbers corresponding to the different branches, and the digital display tube respectively displays the 4 numbers of 1-4.
Further, since the display module is used for displaying the sequencing result of the sequencing circuit, as shown in fig. 3 and fig. 4, in the implementation, the output end of the first logic circuit 31 includes the normally open switch 1A1 of the relay 1A1 of the first branch 311 of the first logic circuit 31, the normally open switch 2A1 of the relay 2A1 of the second branch 312 of the first logic circuit 31, the normally open switch 3A1 of the relay 3A1 of the third branch 313 of the first logic circuit 31, and the normally open switch 4A1 of the relay 4A1 of the fourth branch 314 of the first logic circuit 31, where these normally open switches are as the output end of the first logic circuit 31, and the output ends of the second logic circuit 32, the third logic circuit 33, and the fourth logic circuit 34 are also composed of their own normally open switches, and the connection manners of the output ends are also the same as those of the relay of the first logic circuit 31, and are merely the normally open switches, as shown in fig. 4, and the connection manners of fig. 3 and fig. 4 can be compared in detail.
The output terminals of the first logic circuit 31 to the output terminal of the fourth logic circuit 34 are connected to the BCD decoder in the same manner, and the output terminals of the 4 logic circuits are connected to the BCD decoder 41 after the 4 connection terminals are pinched into 3 connection terminals by the same manner. For example, the normally open switch 3A1 of the relay 3A1 of the third branch 313 of the first logic circuit 31 is connected to the output terminal of the normally open switch 1A1 of the relay 1A1 of the first branch 311 of the first logic circuit 31 after being connected to the input terminal of the BCD decoder 41, and the output terminal of the normally open switch 3A1 of the relay 3A1 of the third branch 313 of the first logic circuit 31 is connected to the output terminal of the normally open switch 2A1 of the relay 2A1 of the second branch 312 of the first logic circuit 31 after being connected to the second diode, and then to the input terminal of the BCD decoder 41; the kneading manner of the output terminals of the second logic circuit 32 to the fourth logic circuit 34 is the same, and the connection manner of fig. 4 is referred to, and will not be described in detail here.
As shown in fig. 1, 3 and 4, in the implementation, the junction sequencing device further includes: the power supply 5 is connected with the sequencing circuit 3 and the display module 4 and is used for supplying power to the contact sequencing device; the power supply 5 is a direct current power supply and is powered by a dry battery.
In particular, in order to enable the junction sequencing device to be carried and work in any occasion, a portable power supply is required to be arranged for the junction sequencing device, and as the junction sequencing device provided by the invention only relates to a plurality of relays, a BCD decoder and a digital display tube, the junction sequencing device provided by the invention has small voltage and current, and can be powered by using a plurality of dry electric appliances connected in series.
As shown in fig. 2, in the implementation, the contact sequencing device further includes: the casing 6, public termination terminal 1 and N terminal 2 all set up on casing 6 surface, and sequencing circuit sets up inside casing 6, and display module sets up on casing 6's surface, and the power setting is in casing 6's inside.
Specifically, the shell is used for bearing the sequencing circuit and the power supply which need to be connected by electrifying, so that the sequencing circuit and the power supply can be effectively protected, and meanwhile, all the components can be integrated, so that the contact sequencing device is convenient to carry and move; the housing may be made of a metal material or a plastic material, and the shape structure of the housing is not limited.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A junction sequencing device, comprising:
the circuit breaker comprises a public terminal wire column and N binding posts, wherein the public terminal wire column is used for connecting a public connecting end of the circuit breaker, and the first binding post to the N binding post of the N binding posts are sequentially connected with M alarming connecting points of the circuit breaker, which sequentially alarm in the driving pressure reducing process;
the sequencing circuit comprises N logic circuits, each logic circuit comprises N branches, the input ends of a first logic circuit in the N logic circuits are sequentially connected with a first binding post to an N binding post, each branch is provided with a relay, and each relay comprises N normally closed switches and at least one normally open switch;
the display module is respectively connected with the output end of the first logic circuit to the output end of the N logic circuit and used for displaying the connection sequence from the first logic circuit to the N logic circuit;
the input end of the N-1 normally closed switch of the relay of the first branch of the first logic circuit is respectively arranged on the first branch of the second logic circuit to the N-1 th branch of the first logic circuit, the N-1 th branch of the first logic circuit is analogized to the N-1 th branch of the first logic circuit in the connection mode, the input end of the N-th branch of the first logic circuit is connected with one normally closed switch of the relay of the N-1 th branch of the first logic circuit, and the normally open switch of the relay of the first branch of the first logic circuit to the normally open switch of the relay of the N-th branch of the first logic circuit forms the output end of the first logic circuit;
and the second logic circuit to the Nth logic circuit are arranged according to the logic mode of the first logic circuit;
wherein N is a positive integer greater than or equal to 3, M is a positive integer greater than or equal to 2 and less than or equal to N;
the number of the binding posts is 4, a first binding post of the 4 binding posts is used for being connected with a locking reclosing alarm connection point of the circuit breaker, a second binding post is used for being connected with a locking closing alarm connection point of the circuit breaker, a third binding post is used for being connected with a first locking separating alarm connection point of the circuit breaker, and a fourth binding post is used for being connected with a second locking separating alarm connection point of the circuit breaker;
and the power supply is connected with the sequencing circuit and the display module and is used for supplying power to the contact sequencing device.
2. The junction sequencing device according to claim 1, wherein,
the sequencing circuit comprises 4 logic circuits, each logic circuit comprises 4 branches, and the input ends of the first logic circuit to the 4 th logic circuit are sequentially connected with the first binding post to the 4 th binding post;
the relay comprises 4 normally closed switches and at least one normally open switch.
3. The junction sequencing device according to claim 2, wherein,
two relays are arranged on each branch, the two relays are connected in series, and the relays are two-to-two switching relays.
4. The junction sequencing device according to claim 1, wherein,
the display module comprises N BCD decoders and N digital display tubes;
the input ends of the N BCD decoders are respectively connected with the output ends of the N logic circuits, and the output ends of the N BCD decoders are respectively connected with the N digital display tubes and are used for displaying the conduction sequence of the N logic circuits of the sequencing circuit through the digital display tubes.
5. The junction sequencing device according to claim 1, wherein,
the display module comprises 4 BCD decoders and 4 digital display tubes;
the input ends of the 4 BCD decoders are respectively connected with the output ends of the 4 logic circuits, and the output ends of the 4 BCD decoders are respectively connected with the 4 digital display tubes and are used for displaying the conduction sequence of a locking reclosing alarm connection point of the circuit breaker, a locking closing alarm connection point of the circuit breaker, a first locking opening alarm connection point of the circuit breaker and a second locking opening alarm connection point of the circuit breaker.
6. The junction sequencing device according to claim 5, wherein,
the output end of the first logic circuit comprises normally open switches of the relay of a first branch of the first logic circuit to normally open switches of the relay of a 4 th branch;
the normally open switch output end of the relay of the third branch of the first logic circuit is connected with the normally open switch output end of the relay of the first branch of the first logic circuit through a first diode, and then is connected with the input end of the BCD decoder;
the normally open switch output end of the relay of the third branch of the first logic circuit is connected with the normally open switch output end of the relay of the second branch of the first logic circuit through a second diode, and then is connected with the input end of the BCD decoder;
the connection mode from the output end of the second logic circuit to the output end of the fourth logic circuit and the input end of the BCD decoder is set according to the connection mode from the output end of the first logic circuit to the input end of the BCD decoder.
7. The junction sequencing device according to claim 1, wherein,
the power supply is a direct current power supply and is powered by a dry battery.
8. The junction sequencing device of claim 1, further comprising:
the utility model discloses a portable electronic device, including casing, public termination terminal and N terminal, sequencing circuit, display module, power supply, the casing, public termination terminal and N terminal all set up on the casing surface, sequencing circuit sets up inside the casing, display module sets up on the surface of casing, the power setting is in the inside of casing.
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| CN201710575961.9A CN107329031B (en) | 2017-07-14 | 2017-07-14 | Contact sequencing device |
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| CN201710575961.9A CN107329031B (en) | 2017-07-14 | 2017-07-14 | Contact sequencing device |
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| CN107329031B true CN107329031B (en) | 2023-08-04 |
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| CN103682999A (en) * | 2013-11-05 | 2014-03-26 | 株洲南车时代电气股份有限公司 | Switch cabinet opening locking state distinguishing system |
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| CN205643557U (en) * | 2016-05-06 | 2016-10-12 | 长安益阳发电有限公司 | Portable mimic -disconnecting switch of multipurpose |
| CN106531570A (en) * | 2016-12-29 | 2017-03-22 | 重庆市渝展电气有限公司 | Device for monitoring state of multi-path switch |
| CN106526477A (en) * | 2016-12-29 | 2017-03-22 | 重庆市渝展电气有限公司 | Multi-path switch state monitoring circuit |
| CN206193109U (en) * | 2016-08-25 | 2017-05-24 | 贾杰栋 | Intelligence phase sequence control appearance |
| CN206248758U (en) * | 2016-12-15 | 2017-06-13 | 苏州伊福尔电子有限公司 | Dust catcher conductive pin wire harness assembly detection means |
| CN206270469U (en) * | 2016-12-29 | 2017-06-20 | 重庆市渝展电气有限公司 | Variable connector status monitor circuit |
| CN207114679U (en) * | 2017-07-14 | 2018-03-16 | 北京送变电公司 | Contact sequencing device |
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| CN201663094U (en) * | 2010-02-04 | 2010-12-01 | 宁波华通电器集团股份有限公司 | Vacuum circuit breaker |
| CN101980419A (en) * | 2010-12-09 | 2011-02-23 | 天津市海川电力技术有限公司 | Automatic control device for vacuum circuit breaker on electric distribution network |
| CN102135576A (en) * | 2010-12-23 | 2011-07-27 | 天津市电力公司 | Switching tester of substation condenser bank |
| CN103682999A (en) * | 2013-11-05 | 2014-03-26 | 株洲南车时代电气股份有限公司 | Switch cabinet opening locking state distinguishing system |
| CN204330938U (en) * | 2014-12-23 | 2015-05-13 | 格力电器（合肥）有限公司 | Air conditioner module machine starts detection device |
| CN205643557U (en) * | 2016-05-06 | 2016-10-12 | 长安益阳发电有限公司 | Portable mimic -disconnecting switch of multipurpose |
| CN206193109U (en) * | 2016-08-25 | 2017-05-24 | 贾杰栋 | Intelligence phase sequence control appearance |
| CN206248758U (en) * | 2016-12-15 | 2017-06-13 | 苏州伊福尔电子有限公司 | Dust catcher conductive pin wire harness assembly detection means |
| CN106531570A (en) * | 2016-12-29 | 2017-03-22 | 重庆市渝展电气有限公司 | Device for monitoring state of multi-path switch |
| CN106526477A (en) * | 2016-12-29 | 2017-03-22 | 重庆市渝展电气有限公司 | Multi-path switch state monitoring circuit |
| CN206270469U (en) * | 2016-12-29 | 2017-06-20 | 重庆市渝展电气有限公司 | Variable connector status monitor circuit |
| CN207114679U (en) * | 2017-07-14 | 2018-03-16 | 北京送变电公司 | Contact sequencing device |
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|---|---|
| CN107329031A (en) | 2017-11-07 |
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