CN116544073A - Undervoltage release for auxiliary signal output - Google Patents
Undervoltage release for auxiliary signal output Download PDFInfo
- Publication number
- CN116544073A CN116544073A CN202210086721.3A CN202210086721A CN116544073A CN 116544073 A CN116544073 A CN 116544073A CN 202210086721 A CN202210086721 A CN 202210086721A CN 116544073 A CN116544073 A CN 116544073A
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- Prior art keywords
- push rod
- release
- under
- voltage
- undervoltage
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- 230000008859 change Effects 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
Abstract
The invention relates to an undervoltage release for auxiliary signal output, which comprises a release shell, a bracket A, a bracket B and a micro switch, wherein an auxiliary push rod, a coil push rod and a coil are arranged in the release shell, and the coil is electrically connected with an external conveying circuit; the bracket A is arranged on the release shell; the bracket B is connected with the bracket A in a shaft way; the micro switch is arranged in the release shell, the input end and the output end of the micro switch are electrically connected with the external signal collecting circuit, and the electric signal change of the external signal collecting circuit is formed by the opening and closing of the micro switch; the middle part of the push rod of the undervoltage release is connected to the support A in a shaft way, an elastic reset element is arranged at the shaft joint, and one end part of the push rod of the undervoltage release is abutted to the support B. Compared with the prior art, the invention enables the breaker to control the breaker to trip and output auxiliary signals through rated voltage, and provides the function of enabling the breaker to trip and output auxiliary signals.
Description
Technical Field
The invention relates to an undervoltage release, in particular to an undervoltage release for auxiliary signal output.
Background
The undervoltage relay or the release refers to a relay which enables a mechanical switch to be opened or closed with or without delay when the terminal voltage of the relay or the release is reduced to a preset value. Corresponding to the high-voltage protection, a tripping command is mainly sent out when a fault occurs, so that a matched switch trips, the accident is prevented from being enlarged, and the undervoltage release is increasingly widely applied at present.
The tripping device has the protection functions of overload, circuit breaking, electric leakage, undervoltage, overvoltage, unbalance, underfrequency, over-frequency, reverse power, phase sequence and the like; the system also has the functions of load monitoring, real-time value measurement, demand measurement, harmonic measurement, meter setting, maintenance, communication, DI/DO, area selective interlocking, test interlocking, LCD interface display and the like.
The existing market does not have 315A and below a product with an undervoltage release integrated with auxiliary signal output and independent in function, and correspondingly does not have an integrated accessory device for providing undervoltage release and auxiliary functions.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an undervoltage release for outputting auxiliary signals, so that a circuit breaker can control the circuit breaker to release through rated voltage and output the auxiliary signals.
The aim of the invention can be achieved by the following technical scheme:
the invention aims to protect an undervoltage release for auxiliary signal output, the trip device comprises a trip device shell, a bracket A, a bracket B and a micro switch, wherein the trip device shell comprises a trip device shell, a:
the tripping device comprises a tripping device shell, a coil push rod and a coil, wherein the coil is electrically connected with an external conveying circuit, the coil push rod is arranged in the middle of the coil, the current in the coil and the current of the external conveying circuit are changed in equal proportion, so that a changed electromagnetic attraction force is formed, and the auxiliary push rod is connected to the tripping device shell in a shaft joint mode;
the bracket A is arranged on the release shell;
the bracket B is connected to the bracket A in a shaft way;
the micro switch is arranged in the release shell, the input end and the output end of the micro switch are electrically connected with the external signal collecting circuit, the electric signal change of the external signal collecting circuit is formed by the opening and closing of the micro switch, one end of the auxiliary push rod is abutted to the micro switch, the other end is abutted to the rotating shaft of the circuit breaker, and the auxiliary push rod and the opening and closing of the circuit breaker form coupling linkage;
the middle part of the under-voltage release push rod is connected to the support A in a shaft way, an elastic reset element is arranged at the shaft joint, one end part of the under-voltage release push rod is connected to the support B in a propping way, the other end part of the under-voltage release push rod is connected to the rotating shaft of the circuit breaker in a propping way, the under-voltage release push rod and the opening and closing of the circuit breaker form coupling linkage, and the coil push rod faces the under-voltage release push rod and enables the under-voltage release push rod to rotate through electromagnetic attraction.
Further, the undervoltage release further comprises a spring A, one end of the spring A is connected with the release shell, and the other end of the spring A is connected with the auxiliary push rod, so that the reset function of the auxiliary push rod is achieved.
Further, the under-voltage release further comprises a spring B, one end of the spring B is connected with the release shell, and the other end of the spring B is connected with the under-voltage release push rod, so that the reset function of the under-voltage release push rod is achieved.
Further, the undervoltage release further comprises a spring C, one end of the spring C is connected with the support B, and the other end of the spring C is connected with the release shell, so that torsion reset force is provided for rotation of the support B.
Further, the springs A, B and C are torsion springs.
Further, the bracket B is pivotally connected to the bracket a by a screw, and the bracket B can rotate around the screw.
Further, the under-voltage release push rod is connected to the support A in an axial mode through an axis A, the under-voltage release push rod can rotate anticlockwise around the axis A, and the axis A penetrates through the spring B.
Further, when the breaker is in a state of breaking or tripping, the auxiliary push rod presses down the micro switch through the torsion force of the spring, so that the micro switch is communicated;
when the breaker is switched on, the auxiliary push rod is buckled by the rotating shaft, and the micro switch is released.
Further, the rotation position of the undervoltage push rod has two states, which correspond to the undervoltage state and the foot voltage state respectively.
Further, in the under-voltage state, the coil and the coil push rod give electromagnetic attraction force to the under-voltage push rod smaller than restoring force provided by the spring B;
in the foot voltage state, the coil and the coil push rod give the electromagnetic attraction force of the under-voltage push rod to be larger than the restoring force provided by the spring B.
Compared with the prior art, the invention has the following technical advantages:
(1) The technical scheme provides an accessory device integrating the functions of the undervoltage release and the auxiliary signal output for the electronic molded case circuit breaker, so that the circuit breaker can control the circuit breaker to release through rated voltage and output the auxiliary signal.
(2) The electronic molded case circuit breaker is simple in structure, reliable in action, unchanged in size, independent in function and capable of being installed in a plug-in mode, a group of switches with auxiliary functions are added on the basis of a conventional undervoltage release, and the functions of enabling the circuit breaker to release and outputting auxiliary signals are provided in undervoltage of the electronic molded case circuit breaker.
Drawings
Fig. 1 is a schematic cross-sectional view of an under-voltage release according to the present invention.
Fig. 2 is a schematic perspective view of an under-voltage release according to the present invention.
FIG. 3 is a schematic cross-sectional view of the switching of the under-voltage trip pusher of the under-voltage trip in the present invention in the A position and the B position.
Fig. 4 is a schematic diagram of a front view structure of an undervoltage trip push rod of the undervoltage trip device of the present invention in a position a and a position B.
Fig. 5 is a schematic structural diagram showing interaction between the auxiliary push rod and the micro switch button in the present invention.
Fig. 6 is a schematic structural diagram of an under-voltage trip pusher of the under-voltage trip unit of the present invention.
Fig. 7 is a schematic structural diagram of the undervoltage release mounted on the large cover in the present invention.
Fig. 8 is a schematic diagram of the operation of the undervoltage release of the present invention.
Fig. 9 is a schematic diagram of the operation of the undervoltage release of the present invention.
In the figure: 1 is an undervoltage release push rod, 2 is an auxiliary push rod, 3 is a spring A,4 is a micro switch, 5 is a spring B,6 is a shaft A,7 is a shaft support A,8 is a shaft B,9 is a spring C,10 is a support B,11 is a screw, 12 is a coil housing, 13 is a release housing, 14 is a coil, 15 is a coil push rod, 16 is a large cover of a circuit breaker, 17 is a rotating shaft, and 18 is a traction rod.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connection structure, a control method, an algorithm and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
The undervoltage release for auxiliary signal output comprises a release housing 13, a bracket A7, a bracket B10 and a micro switch 4, wherein the undervoltage release is particularly shown in figures 1 to 9.
The tripping device comprises a tripping device shell 13, a control circuit and a control circuit, wherein an auxiliary push rod 2, a coil push rod 15 and a coil 10 are arranged in the tripping device shell 13, the coil 10 is electrically connected with an external conveying circuit, the coil push rod 15 is arranged in the middle of the coil 10, the current in the coil 10 and the current of the external conveying circuit are changed in equal proportion, so that a changed electromagnetic attraction force is formed, and the auxiliary push rod 2 is axially connected to the tripping device shell 13; the bracket A7 is arranged on the release shell 13; the bracket B10 is connected with the bracket A7 in a shaft way.
The micro switch 4 is arranged inside the release shell 13, the input end and the output end of the micro switch 4 are electrically connected with an external signal collecting circuit, the electric signal change of the external signal collecting circuit is formed by the opening and closing of the micro switch 4, one end of the auxiliary push rod 2 is abutted to the micro switch 4, the other end is abutted to a rotating shaft 17 of the circuit breaker, and the auxiliary push rod and the opening and closing of the circuit breaker form coupling linkage.
The middle part of the under-voltage release push rod 1 is connected to the support A7 in a shaft way, an elastic reset element is arranged at the shaft joint, one end part of the under-voltage release push rod 1 is connected to the support B10 in a butt joint way, the other end part of the under-voltage release push rod 1 is connected to the rotating shaft 17 of the circuit breaker in a butt joint way, the under-voltage release push rod and the circuit breaker are opened and closed to form coupling linkage, the coil push rod 15 faces the under-voltage release push rod 1, and the under-voltage release push rod 1 is enabled to rotate through electromagnetic attraction.
In specific implementation, the under-voltage release further comprises a spring A3, one end of the spring A3 is connected with the release shell 13, and the other end of the spring A3 is connected with the auxiliary push rod 2, so that the reset function of the auxiliary push rod 2 is achieved. The under-voltage release further comprises a spring B5, one end of the spring B5 is connected with the release shell 13, and the other end of the spring B5 is connected with the under-voltage release push rod 1, so that the reset function of the under-voltage release push rod 1 is achieved. The undervoltage release further comprises a spring C9, one end of the spring C9 is connected with the support B10, and the other end of the spring C9 is connected with the release shell 13, so that torsion reset force is provided for rotation of the support B10.
In the specific implementation, the springs A3, B5 and C9 are torsion springs. The bracket B10 is pivotally connected to the bracket A7 by means of a screw 11, said bracket B10 being rotatable about the screw 11. The under-voltage release push rod 1 is connected to the support A7 in a shaft mode through a shaft A6, the under-voltage release push rod 1 can rotate anticlockwise around the shaft A6, and the shaft A6 penetrates through the spring B5.
In particular, the bracket A7 is mounted in the release housing 13, the bracket B10 and the screw 11 are mounted on the bracket A7, the screw 11 serves to connect the bracket A7 and the bracket B10, and the bracket B10 can rotate around the center of the screw 11 by a certain angle. The microswitch 4 is mounted in the release housing 13 together with a spring A3, the spring A3 acting as a return for the auxiliary push rod 2. The coil push rod 15 and the coil 10 are mounted in the trip housing 13. The under-voltage release push rod 1 and the shaft A6 are arranged on the support A7, wherein the shaft A6 plays a role in connecting the under-voltage release push rod 1 with the support A7, and the under-voltage release push rod 1 can rotate anticlockwise around the center of the shaft A6 by a certain angle. The spring B5 and the spring C9 are arranged on the support A7 and the support B10, the spring B5 plays a role in resetting the push rod 1 of the undervoltage release, and the spring C9 plays a role in rotating the support B10.
As shown in fig. 1-9, the undervoltage release for auxiliary signal output in this embodiment has a main function of providing an accessory device with independent undervoltage release and auxiliary signal output functions for a molded case circuit breaker.
In specific operation, referring to fig. 8 and 9, when the rated voltage is 85% -110%, the circuit breaker can be closed, and then the circuit breaker is rebuckled and closed. When the circuit breaker is switched on, the surface E of the rotating shaft 17 buckles the surface D of the auxiliary push rod 2, so that the button of the micro switch 4 is in a released state, the surface G of the rotating shaft 17 of the circuit breaker pre-applies a clockwise moment on the surface F of the under-voltage push rod 1, so that the under-voltage push rod is in an initial position B, the under-voltage coil 14 in the under-voltage release continuously obtains an electric signal, and the under-voltage push rod 1 starts to be attracted, so that the under-voltage push rod 1 is kept at the position B.
When the rated voltage is 35% -70%, the under-voltage coil in the under-voltage release loses an electric signal, the electromagnetic force is insufficient to overcome the reaction force of the spring B5, the under-voltage release push rod 1 is reset, namely returns to the position A under the action of the coil 14, the coil push rod 15, the spring B5 and the bracket B10, and the C end of the under-voltage push rod 1 is enabled to strike the traction rod 18 to release the circuit breaker. When the rated voltage is lower than 35%, the undervoltage release makes the breaker unable to close. When the rated voltage of the circuit breaker is 70% -110%, a group of contacts F11, F12 and F14 of the auxiliary switch are closed or opened according to the state of the circuit breaker. When the breaker is in a breaking or tripping state, the auxiliary push rod 2 is not buckled by the rotating shaft 17, the micro switch 4 button is pressed under the reaction of the spring A3, and an auxiliary signal is output. When the breaker is in a closed state, the auxiliary push rod 2 is buckled by the rotating shaft 17, so that the micro switch button is released, the signal circuit is disconnected, and the external signal receiving equipment acquires the signal change. Through the action of the accessory device, the circuit breaker plays a role in tripping and independently outputting auxiliary signals when under-voltage.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (10)
1. An undervoltage release for auxiliary signal output, comprising:
the tripping device comprises a tripping device shell (13), wherein an auxiliary push rod (2), a coil push rod (15) and a coil (10) are arranged, the coil (10) is electrically connected with an external conveying circuit, the coil push rod (15) is arranged in the middle of the coil (10), the current in the coil (10) and the current of the external conveying circuit are changed in equal proportion, so that a changed electromagnetic suction force is formed, and the auxiliary push rod (2) is axially connected to the tripping device shell (13);
the bracket A (7) is arranged on the release shell (13);
a bracket B (10) which is connected with the bracket A (7) in a shaft way;
the micro switch (4) is arranged in the release shell (13), the input end and the output end of the micro switch (4) are electrically connected with an external signal collecting circuit, the electric signal change of the external signal collecting circuit is formed by the opening and closing of the micro switch (4), one end of the auxiliary push rod (2) is abutted against the micro switch (4), and the other end is abutted against a rotating shaft (17) of the circuit breaker, so that the coupling linkage is formed with the opening and closing of the circuit breaker;
the circuit breaker is characterized by comprising an under-voltage release push rod (1), wherein the middle part of the under-voltage release push rod (1) is connected onto the support A (7) in a shaft way, an elastic reset element is arranged at the shaft joint, one end part of the under-voltage release push rod (1) is connected onto the support B (10) in a propping way, the other end part of the under-voltage release push rod (1) is connected onto the rotating shaft (17) of the circuit breaker in a propping way, the under-voltage release push rod and the opening and closing of the circuit breaker form coupling linkage, and the coil push rod (15) faces the under-voltage release push rod (1) to enable the under-voltage release push rod (1) to rotate through electromagnetic attraction.
2. An undervoltage release for auxiliary signal output according to claim 1, characterized in that the undervoltage release further comprises a spring a (3), one end of the spring a (3) is connected to the release housing (13), and the other end is connected to the auxiliary push rod (2), thereby acting as a reset for the auxiliary push rod (2).
3. An under-voltage release for auxiliary signal output according to claim 2, characterized in that the under-voltage release further comprises a spring B (5), one end of the spring B (5) is connected to the release housing (13), and the other end is connected to the under-voltage release push rod (1), thereby functioning as a reset of the under-voltage release push rod (1).
4. An undervoltage release for auxiliary signal output according to claim 3, characterized in that the undervoltage release further comprises a spring C (9), one end of the spring C (9) being connected to the bracket B (10) and the other end being connected to the release housing (13) for providing a torsion return force for the rotation of the bracket B (10).
5. An undervoltage release for auxiliary signal output according to claim 3, wherein the springs a (3), B (5) and C (9) are torsion springs.
6. An undervoltage release for auxiliary signal output according to claim 1, characterized in that the bracket B (10) is journalled to the bracket a (7) by means of screws (11), the bracket B (10) being rotatable about the screws (11).
7. An under-voltage release for auxiliary signal output according to claim 5, characterized in that the under-voltage release push rod (1) is journalled on the bracket a (7) by an axis a (6), the under-voltage release push rod (1) being rotatable anticlockwise about the axis a (6), the axis a (6) penetrating the spring B (5).
8. The undervoltage release for auxiliary signal output according to claim 1, wherein when the breaker is in a state of breaking or tripping, the auxiliary push rod (2) presses down the micro switch (4) through the torsion force of the spring, so that the micro switch (4) is communicated;
when the breaker is in a closing state, the auxiliary push rod (1) is buckled by the rotating shaft (17), and the micro switch (4) is released.
9. The undervoltage release for auxiliary signal output according to claim 8, wherein the rotational position of the undervoltage push rod (1) has two states, corresponding to the undervoltage and the foot voltage respectively.
10. An undervoltage release for auxiliary signal output according to claim 9, wherein in the undervoltage state, the coil (10) and coil push rod (15) impart less electromagnetic attraction to the undervoltage push rod (1) than the restoring force provided by spring B (5);
in the foot voltage state, the coil (10) and the coil push rod (15) give electromagnetic attraction force to the under-voltage push rod (1) which is larger than restoring force provided by the spring B (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086721.3A CN116544073A (en) | 2022-01-25 | 2022-01-25 | Undervoltage release for auxiliary signal output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086721.3A CN116544073A (en) | 2022-01-25 | 2022-01-25 | Undervoltage release for auxiliary signal output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116544073A true CN116544073A (en) | 2023-08-04 |
Family
ID=87451103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210086721.3A Pending CN116544073A (en) | 2022-01-25 | 2022-01-25 | Undervoltage release for auxiliary signal output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116544073A (en) |
-
2022
- 2022-01-25 CN CN202210086721.3A patent/CN116544073A/en active Pending
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