CN210778323U - Power distribution network ring main unit anti-misconnection grounding knife switch forced locking device - Google Patents
Power distribution network ring main unit anti-misconnection grounding knife switch forced locking device Download PDFInfo
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- CN210778323U CN210778323U CN201922217930.3U CN201922217930U CN210778323U CN 210778323 U CN210778323 U CN 210778323U CN 201922217930 U CN201922217930 U CN 201922217930U CN 210778323 U CN210778323 U CN 210778323U
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Abstract
The utility model discloses a power distribution network ring main unit anti-misconnection grounding knife switch forced locking device, which comprises an electromagnetic locking device (1), a baffle (3) and an alarm device (4); the utility model discloses can detect whether the interior primary high-voltage apparatus of looped netowrk cabinet is electrified to in time send audible and visual alarm, implement forced shutting, the baffle is installed additional to ground connection switch operation hole, under the looped netowrk cabinet operation condition, reminds operating personnel through audio alert, forced shutting prevents the maloperation; when primary equipment is electrified, once the baffle of the operation hole of the grounding switch is uncovered, the alarm device immediately gives an audible and visual alarm to forcibly lock the equipment to prevent misoperation and protect the equipment and personnel safety.
Description
Technical Field
The utility model relates to a join in marriage power grid looped netowrk cabinet and prevent mistake and close earthing switch and force blocking device belongs to electric power safety operation technical field.
Background
Along with the rapid development of urban construction and the sharp increase of power load, urban power distribution networks are rapidly developing, a large number of distribution ring main units are adopted, at the moment, if a box is only used as a connection point and an opening point of the distribution network, the requirement can not be met far, the ring main units are widely applied to the urban power distribution networks in recent years due to the characteristics of flexible wiring mode, simple principle and reliable operation. The existing operation mode is that before power failure, operation maintenance personnel need to observe the operation condition of an electrified display indicator lamp of a line needing power failure, and after power failure, if the electrified display indicator lamp is turned off, the side of the line is judged to be free of electricity, and then a grounding disconnecting link can be closed; from the practical operating point of view, this mode has the risk of misoperation both from the management requirement and from the technical point of view. For example, in a certain operation mode, a switch in a certain looped network cabinet is disconnected but a line side is electrified, if the line sampler or the charged indicator fails but an operator does not check or find the fault before power failure, the fault judgment of no electricity of the line can be caused, and at the moment, if the operator closes the grounding knife switch, the malignant misoperation of the electrified grounding knife switch can be caused.
Disclosure of Invention
The purpose of the invention is as follows: the utility model is not enough to the aforesaid, a prevent mistake and close earthing switch blocking device is provided to function looped netowrk cabinet that forces shutting, can detect whether a high-tension apparatus is electrified in the looped netowrk cabinet to in time send audible-visual annunciator, carry out and force the shutting, solved the electrified problem that closes earthing switch that exists in the looped netowrk cabinet actual motion.
The technical scheme is as follows:
a power distribution network ring main unit anti-misoperation grounding knife switch forced locking device comprises an electromagnetic locking device, a baffle and an alarm device;
the live display is arranged on a control panel of the ring main unit, and a three-phase live indicator lamp is arranged on the live display; the alarm device is connected with the electrified display through a microswitch to form an alarm loop; the microswitch is arranged on the control panel of the ring main unit and positioned above the grounding switch operation hole; a normally closed contact is arranged on the alarm loop; the baffle is arranged at the position of the grounding switch operation hole on the ring main body operation panel; the lower end of the baffle plate covers the outside of the grounding switch operating hole, and the upper end of the baffle plate is lapped on the microswitch; the electromagnetic locking device is arranged on the control panel of the ring main unit, is positioned on the left side of the baffle and is fixedly connected with the baffle, and the electromagnetic locking device is electrically connected with the electrified display to form an electromagnetic locking loop; and a normally open contact is arranged on the locking loop.
The three-phase live display lamp comprises A, B, C three indicator lamps which are respectively connected with a signal sensor, the signal sensor is connected with primary high-voltage equipment in the ring main unit, and the live operation condition of a A, B, C three-phase power supply in the primary high-voltage equipment in the ring main unit is detected in real time; when primary equipment in the ring main unit is electrified, a three-phase electrified indicator lamp A, B, C on the electrified display is turned on to indicate that the primary high-voltage equipment in the ring main unit is electrified; when primary equipment in the ring main unit is not electrified, the three-phase electrified indicator light A, B, C on the electrified display is turned off to indicate that the primary high-voltage equipment in the ring main unit is not electrified.
An operation indicator lamp and a power indicator lamp are further arranged on the electrified display, the operation indicator lamp is connected with the signal sensor, and a green lamp is displayed to show an operable state under the condition that A, B, C three-phase power supplies in primary high-voltage equipment in the ring main unit detected by the signal sensor are all powered off; displaying a red light under the condition that any phase of A, B, C three-phase power supplies in primary high-voltage equipment in the ring main unit detected by the signal sensor is electrified, and indicating an inoperable state; the power indicator light indicates the state that the electrified display is connected with the power supply.
The alarm device comprises a voice alarm and an audible and visual alarm which are connected in series, and voice information 'circuit electrification and operation prohibition' is prestored in the voice alarm.
Has the advantages that: the utility model discloses a have force shutting function looped netowrk cabinet and prevent mistake and close earthing knife blocking device can detect whether electrified in the looped netowrk cabinet one-time high-tension apparatus to send audible and visual alarm in time, carry out the force shutting, the baffle is installed additional to earthing knife switch operation hole, under the looped netowrk cabinet operating condition, reminds operating personnel through audio alert, force shutting and prevent the maloperation; when primary equipment is electrified, once the baffle of the operation hole of the grounding switch is uncovered, the alarm device immediately gives an audible and visual alarm to forcibly lock the equipment to prevent misoperation and protect the equipment and personnel safety.
Drawings
Fig. 1 is a working principle diagram of the present invention.
Wherein, 1 is the electromagnetism blocking device, 2 is electrified display, 21 is power indicator, 22 is the operation pilot lamp, 3 is the baffle, 4 is alarm device, 5 is micro-gap switch, 6 is earthing knife-switch handle hole, 7 is normally open contact, 8 is normally closed contact.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
Fig. 1 is a working principle diagram of the present invention. As shown in fig. 1, the utility model discloses a distribution network looped netowrk cabinet prevents mistake and closes and connect earthing knife-switch and force blocking device includes electromagnetic blocking device 1, electrified display 2, baffle 3 and alarm device 4.
The live display 2 is installed on a control panel of the ring main unit, and is provided with three-phase live indicating lamps, an operation indicating lamp 22 and a power indicating lamp 21, wherein the three-phase live indicating lamps comprise A, B, C three indicating lamps which are respectively connected with signal sensors, the signal sensors are connected with primary high-voltage equipment in the ring main unit, and the live operation condition of A, B, C three-phase power supplies in the primary high-voltage equipment in the ring main unit is detected in real time; when primary equipment in the ring main unit is electrified, the three-phase electrified indicator lamp A, B, C on the electrified display 2 is turned on to indicate that the primary high-voltage equipment in the ring main unit is electrified; when the primary equipment in the ring main unit is not electrified, the three-phase electrified indicator lamp A, B, C on the electrified display 2 is turned off, which indicates that the primary high-voltage equipment in the ring main unit is not electrified; the operation indicator lamp 22 is connected with the signal sensor, and a green lamp is displayed to indicate an operable state when the A, B, C three-phase power supply in the primary high-voltage equipment in the ring main unit detected by the signal sensor is completely powered off; displaying a red light under the condition that any phase of A, B, C three-phase power supplies in primary high-voltage equipment in the ring main unit detected by the signal sensor is electrified, and indicating an inoperable state; the power indicator lamp 21 is used for indicating the state that the charged display 2 is connected with a power supply.
The alarm device 4 is connected with the electrified display 2 through a microswitch 5 to form an alarm loop; the microswitch 5 is arranged on the control panel of the ring main unit and positioned above the grounding switch operating hole 6; a normally closed contact 8 is also arranged on the alarm loop; the utility model discloses in, alarm device 4 is including the audible-visual annunciator and the audible-visual annunciator of establishing ties, it is electrified, forbidden operation to have speech information "circuit" in advance in the audible-visual annunciator.
Baffle 3 is installed the outside at 6 places of earthing knife-switch operation hole on the looped netowrk cabinet body operating panel, the lower extreme of baffle 3 covers outside earthing knife-switch operation hole 6, the upper end is taken on micro-gap switch 5.
The electromagnetic locking device 1 is arranged on the control panel of the ring main unit and positioned on the left side of the baffle 3, is fixedly connected with the baffle 3 through a connecting rod, and is electrically connected with the electrified display 2 to form an electromagnetic locking loop; and a normally open contact 7 is arranged on the closed loop.
The working principle of the utility model is as follows:
when primary high-voltage equipment in the ring main unit is electrified, the A, B, C three-phase LED indicator lamp in the electrified display flashes uninterruptedly, a normally open contact between the electromagnetic locking device and the electrified display is disconnected, a loop between the electromagnetic locking device and the control panel working control power supply is also in a disconnected state, the electromagnetic locking device is in a locked state and further locks the baffle, and at the moment, the baffle blocks the grounding switch operating hole and cannot be inserted into the grounding switch operating hole, so that forced locking is realized when the primary high-voltage equipment is electrified, and the grounding switch cannot be closed; at this moment micro-gap switch with normally closed contact between the electrified display is closed, alarm circuit switch-on, when stirring during the baffle, the baffle other end is pressed down will micro-gap switch is closed, alarm device's work circuit switch-on, voice alarm device sends the suggestion of "the circuit is electrified, forbids the operation", and the accurate detection once high-tension apparatus is electrified in the looped netowrk cabinet to in time send audible-visual annunciator through audible-visual annunciator, reliably solved the actual motion in-process, under the electrified condition of a high-tension apparatus, prevent to close the ground connection switch with electricity.
When primary high-voltage equipment in the ring main unit is not electrified, A, B, C three-phase LED pilot lamp in the electrified display goes out, electromagnetic locking device with normally open contact between the electrified display is closed, electromagnetic locking device's working power supply return circuit is in the on-state, promptly the electromagnetic locking device is in the unblock state, at this moment the baffle is withdrawed, will ground connection switch handle hole exposes, and manual operating handle can insert ground connection switch handle hole, and the operation maintainer carries out normal ground connection switch that closes.
Adopt above to combine the drawing description the utility model discloses a have and force shutting function looped netowrk cabinet to prevent misconnection earthing knife blocking device can detect whether electrified of a high-tension apparatus in the looped netowrk cabinet to in time send audible-visual annunciator, carry out forced shutting, solved the electrified problem that closes earthing knife-switch that exists in the looped netowrk cabinet actual motion, effectively prevent the emergence of equipment accident and personal accident. However, the present invention is not limited to the described embodiments, and variations, modifications, replacements, and variations to the embodiments may still fall within the scope of the present invention without departing from the working principle of the present invention and the implementation of the forced locking function.
Claims (4)
1. The utility model provides a distribution network looped netowrk cabinet prevents mistake and closes forced blocking device of earthing knife-switch which characterized in that: comprises an electromagnetic locking device (1), a baffle (3) and an alarm device (4);
the electrified display (2) is arranged on a control panel of the ring main unit, and a three-phase electrified indicating lamp is arranged on the electrified display; the alarm device (4) is connected with the electrified display (2) through a microswitch (5) to form an alarm loop; the microswitch (5) is arranged on the ring main unit control panel and is positioned above the grounding switch operating hole (6); a normally closed contact (8) is arranged on the alarm loop; the baffle (3) is arranged at the position of a grounding switch operating hole (6) on an operating panel of the ring main body; the lower end of the baffle (3) covers the grounding switch operating hole (6), and the upper end of the baffle is lapped on the microswitch (5); the electromagnetic locking device (1) is arranged on the control panel of the ring main unit, is positioned on the left side of the baffle (3) and is fixedly connected with the baffle (3), and the electromagnetic locking device (1) is electrically connected with the electrified display (2) to form an electromagnetic locking loop; and a normally open contact (7) is arranged on the locking loop.
2. The power distribution network ring main unit anti-misconnection grounding knife switch forced locking device according to claim 1, characterized in that: the three-phase live display lamp comprises A, B, C three indicator lamps which are respectively connected with a signal sensor, the signal sensor is connected with primary high-voltage equipment in the ring main unit, and the live operation condition of a A, B, C three-phase power supply in the primary high-voltage equipment in the ring main unit is detected in real time; when primary equipment in the ring main unit is electrified, a three-phase electrified indicator lamp A, B, C on the electrified display (2) is lightened to indicate that the primary high-voltage equipment in the ring main unit is electrified; when primary equipment in the ring main unit is not electrified, the three-phase electrified indicator lamp A, B, C on the electrified display (2) is turned off to indicate that the primary high-voltage equipment in the ring main unit is not electrified.
3. The power distribution network ring main unit anti-misconnection grounding knife switch forced locking device according to claim 2, characterized in that: an operation indicator lamp (22) and a power indicator lamp (21) are further arranged on the electrified display (2), the operation indicator lamp (22) is connected with the signal sensor, and a green light is displayed to indicate an operable state under the condition that A, B, C three-phase power supplies in primary high-voltage equipment in the ring main unit detected by the signal sensor are all powered off; displaying a red light under the condition that any phase of A, B, C three-phase power supplies in primary high-voltage equipment in the ring main unit detected by the signal sensor is electrified, and indicating an inoperable state; the power indicator lamp (21) indicates the state that the electrified display (2) is connected with a power supply.
4. The power distribution network ring main unit anti-misconnection grounding knife switch forced locking device according to claim 1, characterized in that: the alarm device (4) comprises a voice alarm and an audible and visual alarm which are connected in series, and voice information 'circuit electrification and operation prohibition' is prestored in the voice alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922217930.3U CN210778323U (en) | 2019-12-12 | 2019-12-12 | Power distribution network ring main unit anti-misconnection grounding knife switch forced locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922217930.3U CN210778323U (en) | 2019-12-12 | 2019-12-12 | Power distribution network ring main unit anti-misconnection grounding knife switch forced locking device |
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|---|---|
| CN210778323U true CN210778323U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922217930.3U Active CN210778323U (en) | 2019-12-12 | 2019-12-12 | Power distribution network ring main unit anti-misconnection grounding knife switch forced locking device |
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| CN (1) | CN210778323U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433118A (en) * | 2020-11-16 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | 10kV medium-voltage power generation vehicle anti-misoperation simulation device and method |
| CN114613217A (en) * | 2022-02-28 | 2022-06-10 | 国网江苏省电力有限公司技能培训中心 | Transformer substation main transformer grounding switch accident simulation system |
-
2019
- 2019-12-12 CN CN201922217930.3U patent/CN210778323U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433118A (en) * | 2020-11-16 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | 10kV medium-voltage power generation vehicle anti-misoperation simulation device and method |
| CN112433118B (en) * | 2020-11-16 | 2022-07-01 | 国网山东省电力公司聊城供电公司 | Anti-misoperation simulation device and method for 10kV medium-voltage power generation vehicle |
| CN114613217A (en) * | 2022-02-28 | 2022-06-10 | 国网江苏省电力有限公司技能培训中心 | Transformer substation main transformer grounding switch accident simulation system |
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