CN218038982U - Isolating switch operating mechanism and isolating switch - Google Patents
Isolating switch operating mechanism and isolating switch Download PDFInfo
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- CN218038982U CN218038982U CN202221808160.5U CN202221808160U CN218038982U CN 218038982 U CN218038982 U CN 218038982U CN 202221808160 U CN202221808160 U CN 202221808160U CN 218038982 U CN218038982 U CN 218038982U
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- 230000009347 mechanical transmission Effects 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims 3
- 238000012790 confirmation Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 25
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- 230000011664 signaling Effects 0.000 description 4
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Abstract
The utility model relates to an isolator operating mechanism and isolator. The operating mechanism is a three-phase linkage operating mechanism and comprises: a drive module disposed at the drive phase operating mechanism; and a first signal module and a second signal module that provide non-homologous location signals. The drive module is configured to: the switch body is driven through a first mechanical transmission chain; the first signal module is driven through the second mechanical transmission chain to trigger a first signal representing the opening and closing position of the switch; and driving a second signal module through a third mechanical transmission chain so as to trigger a second signal representing the opening and closing position of the switch. The first signal module is disposed in the driving phase actuator and the second signal module is disposed in the driving phase actuator and in at least one of the two driven phase actuators. The isolating switch operating mechanism provides two groups of opening and closing position signals with non-homologous properties, can meet the reliability requirement of one-key sequential control and double confirmation, and has simple structure and low cost.
Description
Technical Field
The utility model relates to a high tension switchgear technical field. More particularly, the present invention relates to a disconnector operating mechanism and a disconnector comprising such a disconnector operating mechanism.
Background
With the technical development of intelligent substations, in order to further improve the operation efficiency and reduce the risk of misoperation, the safety operation level of the substation is improved by using one-key sequential control operation, which has become a common requirement of the intelligent substation, and the main problem of the one-key sequential control operation is the double confirmation problem of the opening and closing positions of the disconnecting switch.
In fact, a remote switching operation technology of a transformer substation has appeared for many years, but because a common high-voltage switchgear does not have a double confirmation function of a switch position, when the actual position cannot be seen in 5.3.6.6 article "Q/GDW 1799.1-2013 national grid company electric power safety work procedure-transformation part", at least two indications of different principles or different sources should be correspondingly changed, and all the determined indications are correspondingly changed at the same time, the requirement that the switchgear is operated in place "can be confirmed, and the wider popularization is not obtained temporarily.
The existing solution to the problem of double confirmation of the position of the high-voltage switch is that when the actual position of the switch cannot be seen, the actual position of the switch is usually judged by other methods, such as change of signals of a mechanical position indication, an electrical indication, a live display device, an instrument, various telemetering and remote signaling of the switch equipment, or another opening and closing indication signal is obtained in a homologous mode.
However, for the mechanical position indication of the switch main contact, a monitoring host and an intelligent image system need to be deployed in a substation, and the cost is high. For signals such as electrical indication, electrified display devices, instruments and various telemetering, the requirements of 'the indication and the position signal of the closing and opening positions should not be sent unless the moving contact respectively reaches the closing or opening position in IEC standard and GB standard' can not be met. In addition, the opening and closing indication signals are obtained in a homologous mode, and the reliability of the opening and closing indication signals cannot meet the national power grid requirements mentioned above.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the above-mentioned prior art, provide an isolator operating mechanism, this operating mechanism provides the divide-shut brake position signal of two sets of non-homologous nature, can satisfy the reliability requirement that a key is in the same direction as two affirmations of accuse to simple structure, it is with low costs.
To this end, a first aspect of the present invention provides an isolating switch operating mechanism, which is a three-phase linkage operating mechanism including a driving phase operating mechanism and two driven phase operating mechanisms. The isolator operating mechanism includes: a drive module disposed at the drive phase actuator; and a first signaling module and a second signaling module that provide non-homologous location signals. The drive module is configured to: driving the switch body through a first mechanical transmission chain; the first signal module is driven through a second mechanical transmission chain to trigger a first signal representing the opening and closing position of the switch; and driving the second signal module through a third mechanical transmission chain to trigger a second signal representing the opening and closing position of the switch. The first signal module is disposed in the drive phase actuator, and the second signal module is disposed in the drive phase actuator and in at least one of the two driven phase actuators.
According to an optional embodiment of the present invention, the second signal module is arranged at each of the two driven phase operating mechanisms.
According to an optional embodiment of the present invention, the second mechanical transmission chain and the third mechanical transmission chain are arranged in parallel.
According to an optional embodiment of the present invention, each of the first and second signal modules is configured to trigger a signal only when the switch body fully reaches the opening and closing position.
According to an optional embodiment of the present invention, the first signal module is an auxiliary switch module.
According to an optional embodiment of the present invention, the second signal module comprises: the screw rod is connected with the driving module; the sliding block is screwed with the screw rod and linearly moves along the screw rod when the screw rod rotates; and a signal triggering part configured to trigger the second signal when the slider is moved to a predetermined position.
According to an optional embodiment of the present invention, the second signal module further comprises a position indicator, the position indicator being connected with the lead screw and indicating the second signal by rotating.
According to an optional embodiment of the present invention, the second signal module comprises: the mechanical gear set comprises at least two gears which are sequentially connected and is connected with the driving module; and a signal triggering part configured to trigger the second signal when the end gear of the mechanical gear set rotates to a predetermined position.
According to an optional embodiment of the present invention, the signal triggering part is one or more of a combination of a travel switch, a pressure sensor, a hall sensor, an electromagnetic sensor and an optical switch.
A second aspect of the utility model provides an isolator, isolator is three-phase coordinated type isolator to including the switch body with configure into the drive the basis of switch body the utility model discloses an isolator operating mechanism of first aspect.
Compared with the prior art, the beneficial technical effects of the utility model especially lie in: by adding another opening and closing signal module which is not homologous with the original opening and closing signal in the three-phase linkage type isolating switch operating mechanism, the problem of double confirmation of the position of the isolating switch is solved, and equipment guarantee is provided for realizing one-key sequential control operation of the intelligent substation; in addition, the operating mechanism is simple and reliable, convenient to assemble and low in cost, and can lay a good foundation for popularization and application of one-key sequential control operation.
Drawings
Other features and advantages of the present invention will be better understood by the following detailed description of the preferred embodiments when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof.
Fig. 1 is a schematic structural diagram of an isolating switch operating mechanism according to the present invention;
FIG. 2 is an enlarged schematic view of the phase A actuator of the isolating switch actuator of FIG. 1;
FIG. 3 is an enlarged schematic view of a second signal module disposed in the phase A actuator of FIG. 2;
fig. 4 is an enlarged schematic view of a B phase actuator of the isolating switch actuator of fig. 1;
fig. 5 is a partial schematic view from another perspective of the B-phase actuator of fig. 4;
fig. 6 is an enlarged schematic view of a second signal module disposed in the B-phase actuator of fig. 4.
It should be noted that the drawings are not only for the purpose of illustrating the present invention, but also for the purpose of assisting in the definition of the invention as necessary.
Detailed Description
The practice and use of the embodiments are discussed in detail below. It should be understood, however, that the specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.
In this document, unless expressly stated or limited otherwise, the terms "assembled," "connected," and the like are to be construed broadly. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or indirectly, or through some action. The specific meaning of the above terms herein can be understood by those skilled in the art as appropriate.
As shown in fig. 1, the isolating switch operating mechanism according to the present invention is a three-phase linkage operating mechanism for a three-phase linkage isolating switch, which includes an a-phase operating mechanism as a driving-phase operating mechanism and B-phase and C-phase operating mechanisms as driven-phase operating mechanisms. In the illustrated embodiment, the phase B is a middle phase, the phases a and C are two side phases, and the phase a operating mechanism and the phase B operating mechanism and the phase C operating mechanism are connected by a main transmission shaft 60, so that the phase a, the phase B and the phase C switch bodies are driven in a linkage manner.
According to the utility model discloses, this operating mechanism mainly includes: a casing including a phase a casing 10a, a phase B casing 10B, and a phase C casing 10C; a drive module 20 fitted to the a-phase casing 10 a; and a first signal module and a second signal module driven by the driving module 20 to provide non-homologous position signals representing switch on/off positions. In the illustrated embodiment, the first signal module is the auxiliary switch module 30 disposed in the a-phase housing 10a, and the second signal module is disposed in each of the a-phase housing 10a, the B-phase housing 10B, and the C-phase housing 10C, that is, includes the second signal module 40 according to the first embodiment disposed in the a-phase housing 10a and the second signal module 50 according to the second embodiment disposed in the B-phase housing 10B and the C-phase housing 10C. It will be appreciated that the type of first and second signal modules is not limiting and may be selected according to practical requirements, for example according to the actual dimensions of the different housings. Further, according to an embodiment variation, the second signal module may be disposed at the a-phase casing 10a and at only one of the B-phase casing 10B and the C-phase casing 10C, for example, the second signal module may be disposed at the a-phase casing 10a and the C-phase casing 10C, not at the B-phase casing 10B.
As shown in fig. 2, the driving module 20 mainly includes a motor 21, a reduction gear 22, a clutch 23, and the like, which are mechanically connected in sequence. The drive module 20 may be driven by a motor 21 to provide a source of power for the respective mechanical drive train to drive the other functional modules. The clutch 23 is configured to disconnect the mechanical drive train when the load provided by the motor 21 is excessive, thus serving to protect mechanical components. In this context, unless otherwise explicitly specified and defined, a "mechanical drive chain" is understood to be a mechanical module comprising drive shafts, transmission gears and the like, which are commonly used components for transmitting power, and which are not described in detail in this specification. It will be appreciated that the drive module 20 may also be manually driven by means of an external tool such as a handle connected thereto, in the absence of power.
The drive module 20 drives the switch body through a first mechanical transmission chain. More specifically, the driving module 20 transmits power to the a-phase output shaft through the a-phase transmission shaft 61 and mechanical transmission components such as the first bevel gear 611 provided at the end of the a-phase transmission shaft 61 to implement the opening and closing operation of the a-phase switch body, and transmits power to the B-phase and C-phase operating mechanisms through the main transmission shaft 60 to implement the opening and closing operation of the B-phase and C-phase switch bodies. For example, as shown in fig. 4 and 5, the driving module 20 transmits power to the B-phase transmission shaft 62 through the main transmission shaft 60 to drive the B-phase transmission shaft 62 to rotate, the B-phase transmission shaft 62 is provided with a second bevel gear 621 meshed with the B-phase transmission shaft 62, and an end portion of the B-phase output shaft 70 is provided with a third bevel gear 71 meshed with the second bevel gear 621, so that the rotation of the B-phase transmission shaft 62 can sequentially drive the second bevel gear 621, the third bevel gear 71 and the B-phase output shaft 70 to rotate, so as to realize the switching-on and switching-off operation of the B-phase switch body. The C-phase operating mechanism has similar working principle, and therefore, will not be described in detail.
The driving module 20 drives the auxiliary switch module 30 (first signal module) through the second mechanical transmission chain to trigger a first signal indicating the switch on/off position of the switch, and the auxiliary switch module 30 includes an electric signal of an auxiliary switch on/off contact and an indication of the switch on/off position which is connected to a rotating shaft of the auxiliary switch and can be observed. More specifically, as shown in fig. 2, the auxiliary switch module 30, which may form part of the control system of the actuator, mainly includes an auxiliary switch 31 having a plurality of pairs of auxiliary contacts, and a first position indicator 32 electrically connected to the auxiliary switch 31 and protruding from the phase a housing 10a so as to be visible from the outside. When the driving module 20 is operated, the driving module 20 transmits power to the arm (crank arm) 33 of the auxiliary switch module through a mechanical component such as a transmission shaft, a transmission gear and the like, and the movement of the arm 33 can drive the auxiliary contacts of the auxiliary switch 31 to generate state change, wherein the state change of a pair of auxiliary contacts can be used for sending a first signal representing the switch on-off position to the first position indicator 32 so as to indicate the first signal to a user through the first position indicator 32, for example, by rotating and the like.
The driving module 20 drives the second signal module through the third mechanical transmission chain to trigger a second signal representing the switch-on/off position of the switch. It can be understood that, in order to satisfy the requirement that "when the actual position cannot be seen in" Q/GDW1799.1-2013 national grid company electric power safety work regulation-transformation part "5.3.6.6, at least two indications of non-identical principles or non-homologous sources should be correspondingly changed, and all the determined indications have correspondingly changed at the same time, so as to confirm that the device has been operated in place", that is, in order to satisfy the non-homologous requirement of the first signal and the second signal representing the switch opening and closing positions, the second mechanical transmission chain and the third mechanical transmission chain may be arranged in parallel, so that the first signal module and the second signal module are respectively driven by the driving module 20.
It will also be appreciated that in order to satisfy the requirements in IEC and GB for "the indication and position signals of the closed and open positions should not be issued unless the movable contact has reached its closed or open position respectively", each of the first and second signalling modules is configured to trigger the respective position signal only when the switch body has fully reached the closed and open position, this configuration being achieved by setting the transmission ratio of the first mechanical transmission chain to the second and third mechanical transmission chains.
As shown in fig. 3, the second signal module 40 according to the first embodiment disposed at the a-phase housing 10a mainly includes a mechanical gear set and a signal trigger part. The mechanical gear set includes at least two gears in series, such as a primary gear 41 shown in mesh with the phase a output shaft (i.e., connected to the drive module 20) and a final gear 42 rotatable about a central axis of rotation 43 (the remaining gears are obscured and thus not visible in fig. 3). The signal trigger parts are a first stroke switch 44 and a second stroke switch 45 fitted to a base plate 47 in opposition to each other, and the base plate 47 is fitted to a base 46 fixed to the phase a housing 10 a. The end gear 42 comprises a projection 421 integrally protruded from the upper end surface thereof, when the end gear 42 rotates to a first preset position, the projection 421 touches a contact 441 of the first travel switch 44 to trigger a second signal indicating the switch closing (or opening) position; when the end gear 42 rotates to the second predetermined position, the protrusion 421 touches the contact 451 of the second stroke switch 45 to trigger a second signal indicating the switch opening (or closing) position.
It will be appreciated that the number of gears comprised by the mechanical gear set is not limiting and may be specifically set according to the desired gear ratio of the third mechanical transmission chain. Further, in the illustrated embodiment, the base 46 is provided with a circular arc groove 461 through which the protrusion 421 passes and rotates therealong, and the extending length of the circular arc groove 461 is set such that the maximum rotatable angle of the end gear 42 (i.e., the angle between the first predetermined position and the second predetermined position) is limited to 180 °. That is, the circular arc groove 71 is a semicircular groove, and when the switch body moves from closing to opening (and vice versa), the end gear 42 rotates by 180 ° (a semicircular turn) so that the protrusion 421 rotates from one end to the other end of the groove. It is understood that the maximum rotatable angle of the end gear 42 can be set to any value less than 360 ° depending on the arrangement positions of the first and second stroke switches 44 and 45, and it is only necessary to change the transmission ratio of the third mechanical transmission chain.
As can be seen from the description of the previous paragraph, the transmission ratio of the first and third mechanical transmission chains is preferably set such that the projection 421 touches the contact 441 of the first travel switch 44 only when the switch body is driven to fully reach the switch closing (or opening) position, and the projection 421 touches the contact 451 of the second travel switch 45 only when the switch body is driven to fully reach the switch opening (or closing) position.
As shown in fig. 4 to 6, the second signal module 50 according to the second embodiment disposed in the B-phase casing 10a and the C-phase casing 10C mainly includes a housing 57, and a lead screw 53, a slider 54, and a signal trigger member disposed in the housing 57. More specifically, the rotating member 622 is disposed around the B-phase transmission shaft 62, and one end of the rotating member 622 is provided with a fourth bevel gear 623 that meshes with the third bevel gear 71, and the other end is provided with a first transmission gear 624. One end of the screw 53 is connected to the rotating shaft 52, and the rotating shaft 52 is provided with a second transmission gear 51 engaged with the first transmission gear 624. Therefore, when the driving module 20 drives the B-phase transmission shaft 62 to rotate through the main transmission shaft 60 to rotate the third bevel gear 71, the rotation of the third bevel gear 71 can sequentially drive the fourth bevel gear 623, the rotating member 622, the first transmission gear 624, the second transmission gear 51, the rotating shaft 52 and the lead screw 53 to rotate. The slider 54 is screwed to the screw 53 and can move linearly along the screw 53 when the screw 53 rotates. The signal triggering part is a third travel switch 55 and a fourth travel switch 56 which are respectively arranged adjacent to two ends of the screw 53, when the slide block 54 moves to the first end part of the screw 53, the slide block 54 touches a contact of the third travel switch 55 to trigger a second signal which represents the closing (or opening) position of the switch; when the slider 54 moves to a second end of the lead screw 53, opposite to the first end, the slider 54 touches the contact of the fourth travel switch 56 to trigger a second signal indicating the switch opening (or closing) position.
As can be seen from the description of the previous paragraph, the transmission ratio of the first and third mechanical transmission chains is preferably set such that the slider 54 slides to the first end of the lead screw 53 to touch the contact of the third stroke switch 55 only when the switch body is driven to fully reach the switch closing (or opening) position, and the slider 54 slides to the second end of the lead screw 53 to touch the contact of the fourth stroke switch 56 only when the switch body is driven to fully reach the opening (or closing) position.
In addition, the second signal module 50 according to the second embodiment may further include a second position indicator 58, the second position indicator 58 protruding from the B-phase housing 10a and the C-phase housing 10C so as to be visible from the outside, and being connected to the lead screw 53 through the rotation shaft 52 so as to be rotatable in synchronization with the lead screw 53, so that a second signal indicating the switch opening and closing position can be indicated to the user when the lead screw 53 is rotated to slide the slider 54 to the first end or the second end of the lead screw 53. Therefore, in the illustrated embodiment, the a-phase, B-phase, and C-phase actuators each have a position indicating function.
It will be appreciated that the type of travel switch is not limited to the mechanical push type described. The travel switch can in particular also be of the electromagnetic induction type, in order to trigger a second signal representing the switch-off and switch-on position by electromagnetic induction. It will also be appreciated that the type of signal triggering component is not limited to the travel switch described. The signal triggering component can also be one or a combination of a plurality of pressure sensors, hall sensors, electromagnetic sensors, optical switches and the like.
Compare in the two solution of affirmations of other isolator positions, the utility model discloses a scheme especially has simple reliable, advantage with low costs, can satisfy the requirement of all kinds of safe work rules and standards to three-phase coordinated type isolator, consequently can set up good basis for the popularization and application of a key in the same direction as accuse operation.
The technical contents and technical features of the present invention have been disclosed above, however, it should be understood that under the creation thought of the present invention, those skilled in the art can make various changes and improvements to the idea disclosed above, but all belong to the protection scope of the present invention.
The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.
Claims (10)
1. An isolating switch operating mechanism is a three-phase linkage operating mechanism comprising a driving phase operating mechanism and two driven phase operating mechanisms and is characterized in that,
the isolator operating mechanism includes: a drive module disposed at the drive phase actuator; and a first signal module and a second signal module providing non-homologous location signals,
wherein the drive module is configured to: the switch body is driven through a first mechanical transmission chain; the first signal module is driven through a second mechanical transmission chain to trigger a first signal representing the opening and closing position of the switch; and the second signal module is driven by a third mechanical transmission chain to trigger a second signal representing the opening and closing position of the switch,
wherein the first signal module is disposed in the drive phase actuator and the second signal module is disposed in the drive phase actuator and in at least one of the two driven phase actuators.
2. The isolating switch actuator of claim 1 wherein the second signal module is disposed in each of the two driven phase actuators.
3. The isolating switch actuator of claim 1, wherein the second mechanical drive chain and the third mechanical drive chain are arranged in parallel.
4. The isolating switch actuator of claim 1, wherein each of the first and second signal modules is configured to trigger a signal only when the switch body has fully reached the on-off position.
5. The isolation switch operating mechanism of claim 1, wherein the first signal module is an auxiliary switch module.
6. The isolation switch actuator of claim 1, wherein the second signal module comprises:
the screw rod is connected with the driving module;
the sliding block is screwed with the screw rod and linearly moves along the screw rod when the screw rod rotates; and
a signal trigger component configured to trigger the second signal when the slider is moved to a predetermined position.
7. The isolating switch operating mechanism of claim 6, wherein the second signal module further includes a position indicator coupled to the lead screw and configured to indicate the second signal by rotating.
8. The isolation switch actuator of claim 1, wherein the second signal module comprises:
the mechanical gear set comprises at least two gears which are sequentially connected and is connected with the driving module; and
a signal triggering component configured to trigger the second signal when a tip gear of the mechanical gear set rotates to a predetermined position.
9. The isolating switch actuator of any one of claims 6 to 8 wherein the signal trigger component is a combination of one or more of a travel switch, a pressure sensor, a hall sensor, an electromagnetic sensor and an optical switch.
10. A disconnector, which is a three-phase linked disconnector, characterized in that the disconnector comprises a switch body and a disconnector operating mechanism according to any one of claims 1 to 9, configured to drive the switch body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221808160.5U CN218038982U (en) | 2022-07-13 | 2022-07-13 | Isolating switch operating mechanism and isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221808160.5U CN218038982U (en) | 2022-07-13 | 2022-07-13 | Isolating switch operating mechanism and isolating switch |
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| Publication Number | Publication Date |
|---|---|
| CN218038982U true CN218038982U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221808160.5U Active CN218038982U (en) | 2022-07-13 | 2022-07-13 | Isolating switch operating mechanism and isolating switch |
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| Country | Link |
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| CN (1) | CN218038982U (en) |
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- 2022-07-13 CN CN202221808160.5U patent/CN218038982U/en active Active
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Effective date of registration: 20240117 Address after: Zurich, SUI Patentee after: Hitachi Energy Co.,Ltd. Address before: Swiss Baden Patentee before: Hitachi energy Switzerland AG |