A false tripping prevention device on the power supply air switch of a power grid secondary equipment

Abstract

The application discloses a false tripping prevention device for a power supply air switch of a power grid secondary device, which is arranged on the shell of a designated power supply air switch and is spaced apart from the shell of the power supply air switch to meet the normal opening and closing movement of an external manual operating handle arranged on the power supply air switch and prevent false touch. The application can replace adhesive tape to prevent false tripping of the power supply air switch and can be repeatedly used. In the case of ensuring normal use of the power supply air switch, the application can prevent false tripping of the power supply air switch due to false touch or other reasons, and can also realize online monitoring of the tripping state of the power supply air switch to save time, labor and cost.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to a protection device against accidental disconnection on a power supply air switch of a power grid secondary equipment. Background Technology

[0002] With social development, the number of secondary power grid equipment is increasing, and the demand for power circuit breakers for secondary power grid equipment is also increasing.

[0003] Currently, during the maintenance of secondary power grid equipment, operators often use electrical tape to seal the external manual operating handles (including rotary handles and push rod handles) of the circuit breakers to prevent accidental disconnection, thus preventing the circuit breakers from automatically disconnecting. However, when a short circuit occurs in the secondary equipment controlled by the circuit breaker, the tightly sealed tape prevents it from automatically disconnecting in time, potentially escalating the power grid accident. Furthermore, the circuit breaker does not provide timely online alerts when disconnected, requiring manual location, which is time-consuming and labor-intensive. The tape also has poor reusability, increasing maintenance costs.

[0004] Therefore, there is an urgent need for a reusable protective device that can replace adhesive tape to prevent accidental disconnection of the power circuit breaker. This device should not only prevent accidental disconnection of the power circuit breaker due to accidental contact or other reasons while ensuring its normal operation, but also provide online monitoring and alerts for the disconnection status of the power circuit breaker, saving time, effort, and costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a protection device for preventing accidental disconnection on the power circuit breaker of power grid secondary equipment. It can replace the tape to prevent accidental disconnection of the power circuit breaker and can be reused. It can prevent the power circuit breaker from being accidentally disconnected due to accidental contact or other reasons while ensuring the normal use of the power circuit breaker. It can also realize online monitoring and reminder of the disconnection status of the power circuit breaker, saving time, effort and cost.

[0006] To address the aforementioned technical problems, this invention provides a protection device against accidental disconnection on a power circuit breaker for secondary power grid equipment. The device is installed on the outer casing of the specified power circuit breaker and has a certain space reserved between it and the outer casing. This space is used to allow for the normal opening and closing movement of the external manual operating handle on the power circuit breaker and to prevent accidental contact.

[0007] This includes a cover plate and two inverted mounting brackets; among which, One end of each of the two inverted mounting brackets can be detachably fixed to the side of the cover plate facing the designated power circuit breaker and arranged opposite to each other. The other end of each bracket is fixed to the distribution box where the power circuit breaker is located by magnetic attraction, so that the cover plate covers the top of the outer shell of the power circuit breaker. The cover plate shields the external manual operating handle on the power circuit breaker to prevent accidental contact with the external manual operating handle, and a certain space is reserved between the cover plate and the external manual operating handle to allow for the normal opening and closing movement of the external manual operating handle.

[0008] This also includes an online monitoring and alarm device; the online monitoring and alarm device includes interconnected microswitches and an alarm mechanism; wherein, The alarm mechanism is located on the side of the cover plate away from the power circuit breaker; The micro switch is disposed on the side of the cover plate facing the designated power air switch and is located between the two inverted mounting brackets; The initial position of the micro switch when it is not triggered should overlap with the end position of the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that after the normal opening movement of the external manual operating handle on the power circuit breaker is completed, it can press against the micro switch, triggering the micro switch to drive the alarm mechanism to power on and trigger the alarm.

[0009] The alarm mechanism triggers an alarm by playing a sound or illuminating an indicator light.

[0010] The alarm mechanism sends an alarm to a remote mobile phone, tablet, or computer wirelessly.

[0011] The cover plate and the two inverted mounting brackets are both made of transparent plastic.

[0012] The telescopic length of the two inverted mounting brackets is adjustable.

[0013] The cover plate has two opposing holes for applying force with a finger to lift or press the cover plate; both holes are located on the side where the alarm mechanism is located and extend through the side where the micro switch is located.

[0014] Implementing the embodiments of the present invention has the following beneficial effects: 1. In this invention, the device is installed on the outer shell of a designated power circuit breaker, with a certain space reserved between it and the outer shell of the power circuit breaker. This space is used to allow for the normal opening and closing movement of the external manual operating handle on the power circuit breaker and to prevent accidental contact. This replaces the tape to prevent accidental disconnection of the power circuit breaker and is reusable. It can prevent accidental disconnection of the power circuit breaker due to accidental contact or other reasons while ensuring the normal use of the power circuit breaker. This not only saves costs but also prevents the escalation of power grid accidents. 2. The device in this invention also includes an online monitoring and alarm device. The initial position of the micro switch of the online monitoring and alarm device when it is not triggered should intersect with the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that the alarm mechanism of the online monitoring and alarm device remains powered off and does not work. The final position of the micro switch of the online monitoring and alarm device after being triggered should be separated from the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that the alarm mechanism of the online monitoring and alarm device is powered on and alarms are triggered. This enables the online monitoring and reminder of the disconnection status of the power circuit breaker, achieving the purpose of saving time and effort. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0016] Figure 1 A structural diagram of a protection device against accidental disconnection on a power supply air switch of a power grid secondary equipment provided in an embodiment of the present invention; Figure 2 The circuit logic structure diagram of the online monitoring and alarm device in the anti-misoperation protection device on the power supply air switch of the power grid secondary equipment provided in the embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

[0018] like Figure 1As shown in the embodiment of the present invention, a protection device against accidental disconnection on a power circuit breaker of a power grid secondary equipment is proposed. It is installed on the outer shell of the designated power circuit breaker and a certain space is reserved between it and the outer shell of the power circuit breaker. This space is used to allow for the normal opening and closing movement of the external manual operating handle (not shown) on the power circuit breaker and to prevent accidental contact. It replaces the tape to prevent accidental disconnection of the power circuit breaker and can be reused. It can prevent accidental disconnection of the power circuit breaker due to accidental contact or other reasons while ensuring the normal use of the power circuit breaker. This not only saves costs but also avoids the expansion of power grid accidents.

[0019] At this time, the anti-misoperation protection device includes a cover plate 1 and two inverted mounting brackets 2; wherein, Both inverted mounting brackets 2 are made of transparent plastic. One end of each bracket can be detachably fixed to the side of the cover plate 2 facing the designated power circuit breaker (i.e., the back of the cover plate 2) and arranged opposite each other. The other ends of both brackets are fixed to the distribution box where the power circuit breaker is located by magnetic attraction, so that the cover plate 1 covers the top of the outer shell of the power circuit breaker, that is, it is attracted to the metal panel of the outer shell of the distribution box by magnet. It can be understood that the two inverted mounting brackets 2 have the same structure and adjustable length, that is, the length facing the power circuit breaker can be extended and retracted to meet the requirement that the anti-misoperation protection device can cover power circuit breakers with different outer shell thicknesses. The cover plate 1 is made of transparent plastic. It covers the external manual operating handle on the power circuit breaker to prevent accidental contact with the external manual operating handle, and a certain space is reserved between the cover plate and the external manual operating handle to allow for the normal opening and closing movement of the external manual operating handle.

[0020] In this embodiment of the invention, in order to achieve online monitoring and alerting of the disconnection status of the power circuit breaker, thus saving time and effort, the anti-misoperation protection device also includes an online monitoring alarm device; the online monitoring alarm device includes interconnected microswitches 3 and alarm mechanisms 4; wherein, The alarm mechanism 4 is located on the side of the cover plate 1 away from the power circuit breaker (i.e., the front of the cover plate 2); The micro switch 3 is located on the side of the cover plate 1 facing the designated power circuit breaker (i.e., the back of the cover plate 2) and between the two inverted mounting brackets 2; At this point, the initial position of the microswitch 3 when it is not triggered should overlap with the end position of the normal opening trajectory of the external manual operating handle on the power circuit breaker. This ensures that after the normal opening movement of the external manual operating handle on the power circuit breaker is completed, it can press against the microswitch 3, triggering the microswitch 3 to power on the alarm mechanism 4 (i.e., when the power circuit breaker is fully open, the normally open contact of the microswitch 3 closes to activate the alarm mechanism 4). The alarm mechanism 4 can then sound an alarm or illuminate an indicator light. Furthermore, the alarm mechanism 4 can wirelessly send an alarm to a remote mobile phone, tablet, or computer, notifying remote personnel to promptly carry out repairs.

[0021] It should be noted that the micro switch 3 and the alarm mechanism 4 are both common products on the market or commonly used in this field.

[0022] In one example, such as Figure 2 The diagram shows the working principle of the micro switch 3 and the alarm mechanism 4. The positive power supply passes through the normally open contact of the micro switch, then to the alarm indicator light. After the chip returns to the resistor and the negative power supply terminal, the circuit is connected, the alarm indicator light illuminates, and the switch is displayed in red. The chip sends an alarm signal wirelessly to the receiving computer (substation monitoring center), allowing operators to immediately know and organize emergency repairs.

[0023] It should be noted that, in order to facilitate the removal or installation of the anti-accidental disconnection protection device, two opposing holes 11 are provided on the cover plate 1 for finger force to lift or press the cover plate 1. These two holes 11 are located on the side where the alarm mechanism 4 is located and pass through the side where the micro switch 3 is located, that is, through the front and back of the cover plate 1. Of course, these two holes 11 can also be set on the two opposite side walls of the cover plate 1, and the specific positions can be flexibly designed.

[0024] Implementing the embodiments of the present invention has the following beneficial effects: 1. In this invention, the device is installed on the outer shell of a designated power circuit breaker, with a certain space reserved between it and the outer shell of the power circuit breaker. This space is used to allow for the normal opening and closing movement of the external manual operating handle on the power circuit breaker and to prevent accidental contact. This replaces the tape to prevent accidental disconnection of the power circuit breaker and is reusable. It can prevent accidental disconnection of the power circuit breaker due to accidental contact or other reasons while ensuring the normal use of the power circuit breaker. This not only saves costs but also prevents the escalation of power grid accidents. 2. The device in this invention also includes an online monitoring and alarm device. The initial position of the micro switch of the online monitoring and alarm device when it is not triggered should intersect with the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that the alarm mechanism of the online monitoring and alarm device remains powered off and does not work. The final position of the micro switch of the online monitoring and alarm device after being triggered should be separated from the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that the alarm mechanism of the online monitoring and alarm device is powered on and alarms are triggered. This enables the online monitoring and reminder of the disconnection status of the power circuit breaker, achieving the purpose of saving time and effort.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protection device for preventing accidental disconnection on a power supply air switch of a power grid secondary equipment, characterized in that, It is installed on the housing of the designated power circuit breaker, and a certain space is reserved between it and the housing of the power circuit breaker to allow for the normal opening and closing movement of the external manual operating handle on the power circuit breaker and to prevent accidental contact.

2. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 1, characterized in that, Includes a cover plate and two inverted mounting brackets; among which, One end of each of the two inverted mounting brackets can be detachably fixed to the side of the cover plate facing the designated power circuit breaker and arranged opposite to each other. The other end of each bracket is fixed to the distribution box where the power circuit breaker is located by magnetic attraction, so that the cover plate covers the top of the outer shell of the power circuit breaker. The cover plate shields the external manual operating handle on the power circuit breaker to prevent accidental contact with the external manual operating handle, and a certain space is reserved between the cover plate and the external manual operating handle to allow for the normal opening and closing movement of the external manual operating handle.

3. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 2, characterized in that, It also includes an online monitoring and alarm device; the online monitoring and alarm device includes interconnected microswitches and an alarm mechanism; wherein, The alarm mechanism is located on the side of the cover plate away from the power circuit breaker; The micro switch is disposed on the side of the cover plate facing the designated power air switch and is located between the two inverted mounting brackets; The initial position of the micro switch when it is not triggered should overlap with the end position of the normal opening movement trajectory of the external manual operating handle on the power circuit breaker, so that after the normal opening movement of the external manual operating handle on the power circuit breaker is completed, it can press against the micro switch, triggering the micro switch to drive the alarm mechanism to power on and trigger the alarm.

4. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 3, characterized in that, The alarm mechanism triggers an alarm by playing a sound or illuminating an indicator light.

5. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 4, characterized in that, The alarm mechanism sends an alarm wirelessly to a remote mobile phone, tablet, or computer.

6. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 5, characterized in that, The cover plate and the two inverted mounting brackets are both made of transparent plastic.

7. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 6, characterized in that, The telescopic length of the two inverted mounting brackets is adjustable.

8. The anti-misoperation protection device on the power supply air switch of the power grid secondary equipment as described in claim 7, characterized in that, The cover plate has two opposing holes for applying force with a finger to lift or press the cover plate; both holes are located on the side where the alarm mechanism is located and extend through the side where the micro switch is located.

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