High-voltage switch overshoot warning intelligent device

Abstract

The embodiment of the present application provides an intelligent device for preventing overshoot warning of high-voltage switches, which relates to the technical field of high-voltage switches. According to the intelligent device for preventing overshoot warning of high-voltage switches of the present application, the device comprises a high-voltage end and a high-voltage switch installed at its lower end, and a grounding switch is arranged on one side of the high-voltage switch; the position signals of the high-voltage switch and the grounding switch can be serially connected through the alarm module to control the connection or disconnection of the secondary signal circuit. When the high-voltage switch is closed, its position signal point is disconnected to ensure that the primary high-voltage circuit is separated from the secondary signal circuit. When the high-voltage switch is switched from closing to opening, its position signal point is closed. As long as the moving blade of the switch contacts the contact block on the anti-overshoot warning component, the alarm module forms a loop and is connected to realize the alarm; and when the high-voltage switch is switched from grounding closing to opening, the position signal point is disconnected, the moving blade of the switch contacts the contact block, and the alarm module loop is disconnected, and the alarm cannot be given, so as to stably and efficiently provide a warning for the prevention of overshoot of the high-voltage switch, avoid the occurrence of ground short circuit faults, and then avoid safety accidents.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage switches, and in particular to an intelligent device for preventing overshoot and early warning of high-voltage switches. Background Art

[0002] A high-voltage switch refers to an electrical appliance with a rated voltage of 3kV or above that is mainly used for opening and closing conductive circuits. The insulation safety distance of high-voltage switches is clearly specified in relevant documents. When the insulation distance is less than the specified value, the insulation performance of the product will be affected, and even phase-to-phase or phase-to-ground short-circuit faults may occur. In severe cases, it may cause the product to explode and cause major safety accidents.

[0003] However, the transmission parts on the high-voltage switch have tolerance accumulation during processing. When the gap is too large or the limit adjustment is not good, the high-voltage switch will continue to move forward due to inertia when it is in the open position, and eventually return to the open position and stop. When the high-voltage switch is manufactured and debugged, the inspection personnel usually measure the insulation safety distance (such as Fig.10 L4 in the figure), but ignores the distance to the ground when the high-voltage switch moves past the opening position and continues to move (the actual minimum insulation distance is Fig. 9 L2 in the figure, it can be seen that L2<L4), which may easily cause the requirement of insulation safety distance not to be met, and finally cause a series of safety accidents. Therefore, an intelligent device for overshoot warning of high-voltage switch is proposed. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an intelligent device for preventing overshooting of a high-voltage switch, which forms a circuit through which the alarm module is connected by contacting the switch moving blade with the contact block, thereby realizing an alarm and avoiding the risk caused by overshooting of the high-voltage switch opening to the greatest extent.

[0005] This application is implemented as follows:

[0006] The present application provides an intelligent device for preventing overshoot and early warning of a high-voltage switch, comprising: a high-voltage switch is installed at a high-voltage end and a lower end thereof, a grounding switch is arranged on one side of the high-voltage switch, a grounding knife body is installed on the top of the grounding switch, an anti-overshoot early warning component is installed at the end of the grounding knife body, and the anti-overshoot early warning component includes an alarm module for power-on early warning when the switch moving knife deviates;

[0007] The anti-overshoot warning component also includes an insulating member, which is used to be installed between conductors of different potentials or between a conductor and a grounding member, and a first signal terminal is provided at the signal blade of the insulating member;

[0008] The signal blade of the insulating member is provided with a support sleeve on the side of the first signal end, the other end of the support sleeve is provided with a contact block, and the outer surface of the contact block is provided with a compression spring that cooperates with the contact block and adjusts its position;

[0009] A fixing pin is installed through the middle of the support sleeve, and acts as a fastener for connecting the contact block and the support sleeve;

[0010] A plurality of groups of outlet terminals are arranged at the lower part of the high-voltage switch, and the anti-overshoot warning component also includes a second signal terminal arranged at the end of the outlet terminal, which cooperates with the first signal terminal.

[0011] According to the intelligent device for preventing overshoot and early warning of a high-voltage switch according to an embodiment of the present application, the high-voltage switch includes a moving switch blade and a stationary switch blade, and the moving switch blade is a dynamic blade.

[0012] According to the intelligent device for preventing overshoot and early warning of high-voltage switches in the embodiment of the present application, the insulating component is composed of a fixing plate, an insulating shed and a signal blade plate.

[0013] According to the intelligent device for preventing overshoot and early warning of high-voltage switches in the embodiment of the present application, the support sleeve includes a limiting step connected to one end thereof for assisting the assembly of the compression spring and the contact block, the limiting step is hollow, and a guide hole is formed through one end of the support sleeve close to the limiting step.

[0014] According to the intelligent device for preventing overshoot and early warning of high-voltage switches in the embodiment of the present application, a sliding groove is provided through the middle of the support sleeve, which is used in conjunction with a fixing pin to assemble the contact block, and the other end of the support sleeve is connected to a fixed end.

[0015] According to the intelligent device for preventing overshoot and early warning of high-voltage switches in the embodiment of the present application, the contact block includes a contact end body that contacts the moving blade of the switch, and the other end of the contact end body is connected to a guide rod, and a fixing hole that cooperates with a fixing pin is formed through the surface of one end of the guide rod.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention arranges the switch moving blade, contact block, support sleeve, and signal blade plate as conductive components, and the force-bearing workmanship of the switch moving blade enables the multiple components to be connected in coordination, thereby forming a power-on circuit with the alarm module through the first signal terminal and the second signal terminal, and then transmitting the signal for alarm processing, thereby avoiding the risk caused by overshoot when the high-voltage switch is opened to the greatest extent and improving the stability of the high-voltage switch.

[0018] 2. The present invention can control the connection or disconnection of the secondary signal circuit by serially connecting the position signals of the high-voltage switch and the grounding switch through the alarm module. When the high-voltage switch switches from closing to opening, its position signal point is closed. As long as the moving blade of the switch contacts the contact block on the anti-overshoot warning component, the alarm module forms a circuit and is connected to realize the alarm. When the high-voltage switch switches from grounding closing to opening, the position signal point is disconnected, the moving blade of the switch contacts the contact block, the alarm module circuit is disconnected, and the alarm cannot be sounded. In this way, an efficient and stable warning is provided for the anti-overshoot of the high-voltage switch, thereby avoiding the occurrence of ground short circuit failures and thus avoiding safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a three-dimensional schematic diagram of a high-voltage switch structure according to an embodiment of the present application;

[0021] Figure 2 is a front view of a high-voltage switch in a closed state according to an embodiment of the present application;

[0022] Figure 3 This is a front view of the structure of the anti-overshoot warning component according to an embodiment of the present application;

[0023] Figure 4 is a front view of the insulating member structure according to an embodiment of the present application;

[0024] Figure 5 is a side view of the first signal terminal structure according to an embodiment of the present application;

[0025] Figure 6 is a three-dimensional schematic diagram of a support sleeve structure according to an embodiment of the present application;

[0026] Figure 7 is a plan view of a contact block structure according to an embodiment of the present application;

[0027] Figure 8 is a front view schematic diagram of a high-voltage switch opening process according to an embodiment of the present application;

[0028] Fig. 9 is a front view schematic diagram of a second opening process of a high-voltage switch according to an embodiment of the present application;

[0029] Fig.10 is a front view schematic diagram of the opening process of a high-voltage switch according to an embodiment of the present application;

[0030] Fig.11 It is a front view schematic diagram of a high-voltage switch in a grounded and closed state according to an embodiment of the present application.

[0031] In the figure:

[0032] 1. High voltage end;

[0033] 2. High-voltage switch; 21. Switch moving blade; 22. Switch static blade;

[0034] 3. Grounding switch; 31. Grounding knife body;

[0035] 4. Anti-overshoot warning assembly; 41. Insulating member; 411. Fixing plate; 412. Insulating shed; 413. Signal blade; 42. First signal terminal; 43. Fixing pin; 44. Support sleeve; 441. Guide hole; 442. Limiting step; 443. Sliding slot; 444. Fixed terminal; 45. Compression spring; 46. Contact block; 461. Contact terminal body; 462. Guide rod; 463. Fixing hole; 47. Second signal terminal; 48. Alarm module;

[0036] 5. Outgoing terminal. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0038] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0039] like Figure 1-Figure 11 As shown, the high-voltage switch overshoot prevention warning intelligent device according to the embodiment of the present application includes a high-voltage terminal 1 and a high-voltage switch 2 for opening and closing a primary conductive circuit installed at the lower end of the high-voltage terminal 1. The high-voltage switch 2 is an electrical appliance with a rated voltage of 3 kV or above and is mainly used for opening and closing a primary conductive circuit;

[0040] like Figure 1-Figure 2 As shown, the high-voltage switch 2 includes a switch moving blade 21 and a switch static blade 22, which are respectively installed on the high-voltage switch 2 and the high-voltage terminal 1. The switch moving blade 21 is a dynamic blade, which can be switched between closing and opening the high-voltage switch, and can be switched between closing and opening the grounding switch. A plurality of groups of outlet terminals 5 are arranged at the lower part of the high-voltage switch 2.

[0041] like Figure 1-Figure 3 As shown, a grounding switch 3 is provided on one side of the high-voltage switch 2, and a grounding blade body 31 is installed on the top of the grounding switch 3. The grounding blade body 31 can be fixed by the grounding switch 3. The grounding switch 3 and the grounding blade body 31 are a mechanical switch device for safely grounding the high-voltage switch 2 (ensuring the safety of personnel during maintenance). An anti-overshoot warning component 4 is installed at the end of the grounding blade body 31. When the switch moving blade 21 of the high-voltage switch 2 is driven by force to move from closing to opening, it is connected with the conductive component in the anti-overshoot warning component 4, and cooperates with each other to form an alarm signal loop through the signal terminal piece;

[0042] like Figure 3 and Figure 4 As shown, the anti-overshoot warning component 4 includes an insulating member 41, which is used to be installed between conductors of different potentials or between conductors and grounding components. The signal blade of the insulating member 41 is provided with a first signal terminal 42. The insulating member 41 is composed of a fixing plate 411, an insulating shed 412 and a signal blade 413. The fixing plate 411 is mounted on the grounding blade body 31. The fixing plate 411 is used for supporting and fixing the high-voltage switch anti-overshoot warning intelligent device, and the insulating shed 412 is used for electrical insulation between the high-voltage switch 2 and the housing (i.e., to the ground);

[0043] like Figure 4 As shown, the insulating member 41 withstands voltage and mechanical stress, and the insulating member 41 is preferably a post insulator. The insulating member 41 may also be a suspension insulator, and its specific type and model are selected according to actual conditions;

[0044] like Figure 3 and Figure 6 As shown, the signal blade plate of the insulating member 41 is provided with a support sleeve 44, and the support sleeve 44 includes a limiting step 442, and the limiting step 442 is hollow, wherein the signal blade plate 413 is connected to one end of the support sleeve 44, and a guide hole 441 is formed through one end of the support sleeve 44 close to the limiting step 442, and is communicated with the cavity on the limiting step 442, and a sliding groove 443 is formed through the middle of the support sleeve 44, and is used in conjunction with the fixing pin 43 to assemble the contact block 46, and the other end of the support sleeve 44 is connected to the fixing end 444;

[0045] The surfaces of the signal blade plate 413 and the fixed plate 411 are both provided with limiting holes, and the signal blade plate 413 is sleeved on the surface of the fixed end 444 through the limiting holes provided on its surface, and the assembly end surface of the first signal end 42 is provided with an installation through hole, and the first signal end 42 can be installed on the surface of the fixed end 444 through the installation through hole, so that the support sleeve 44, the insulating member 41, the first signal end 42 and the contact block 46 are assembled and matched with each other;

[0046] like Figure 3 and Figure 7 As shown, a contact block 46 is provided at the other end of the support sleeve 44, and a fixing pin 43 is installed through the middle of the support sleeve 44, and is a fastener for connecting between the contact block 46 and the support sleeve 44. The fixing pin 43 is preferably a cylindrical pin, and can also be a conical pin or other shapes for facilitating quick assembly and use; the contact block 46 includes a contact end body 461 that contacts the switch moving blade 21, and the other end of the contact end body 461 is connected to a guide rod 462, and the guide rod 462 and the contact end body 461 are integrally formed. The contact surface is a spherical surface for reliable contact, which avoids tip discharge and affects the insulation performance. A fixing hole 463 that cooperates with the fixing pin 43 is formed on the surface of one end of the guide rod 462, wherein the diameter of the fixing pin 43 is larger than the inner diameter of the fixing hole 463; the guide rod 462 passes through the limiting step 442 and passes through the guide hole 441 on the support sleeve 44, so that the fixing hole 463 and the sliding groove body 443 are in a vertically connected state, and then the fixing pin 43 is inserted into the fixing hole 463 through the sliding groove body 443, and the contact block 46 and the fixing pin 43 can be assembled;

[0047] like Figure 3 As shown, the outer surface of the contact block 46 is provided with a compression spring 45 which cooperates with it and adjusts its position. The compression amount of the compression spring 45 (i.e., the position of the contact block 46) can be adjusted by a gasket. One end of the compression spring 45 is connected to the end of the contact end body 461 and the guide rod 462 on the contact block 46, and the other end of the compression spring 45 is installed to one end of the limiting step 442 on the support sleeve 44, wherein the limiting step 442 is used to assist in the assembly of the compression spring 45 and the contact block 46.

[0048] Specifically, the sliding groove body 443 is in the shape of a long groove. Due to its special shape, when the contact end body 461 is moved by force, it can drive the guide rod 462 to slide in the support sleeve 44. The compression spring 45 can drive the contact block 46 to reset according to its own characteristics when the contact end body 461 is not restrained by external force.

[0049] like Figure 1 and Figure 3As shown, the overshoot warning component 4 includes an alarm module 48 for power-on warning due to the deviation of the moving blade 21 of the switch, and a second signal terminal 47 is provided at the end of the outlet terminal 5, and a first signal terminal 42 is provided at the insulating member 41 and the signal blade plate 413. The second signal terminal 47 cooperates with the first signal terminal 42 to transmit a signal to the alarm module 48, and when the high-voltage switch 2 is in the closed state, the second signal terminal 47 is disconnected from the alarm module 48 to separate the high-voltage primary circuit from the low-voltage secondary signal circuit. The support sleeve 44 is located on the signal blade plate 413, and contacts with the upper part of the overshoot warning component 4 through the moving blade 21 of the switch, and when the second signal terminal 47 and the first signal terminal 42 cooperate with each other to transmit signals, a secondary signal circuit is formed for the alarm module 48 to realize alarm;

[0050] The second signal terminal 47 and the first signal terminal 42 are both used to assist in power transmission of signals. The switch movable blade 21, the contact block 46, the support sleeve 44, the signal blade plate 413 and the alarm module 48 are all conductive components. When the multiple components are in contact with each other, the first signal terminal 42 and the second signal terminal 47 cooperate with the alarm module 48 to form a power circuit to achieve signal transmission, thereby realizing an alarm.

[0051] like Figure 1 As shown, two ends of the alarm module 48 are electrically connected with wires, which are divided into a first wire and a second wire, and the first wire and the second wire are respectively connected to the second signal terminal 47 and the first signal terminal 42; wherein, the first wire and the second wire are connected in series with the second signal terminal 47 and the first signal terminal 42, so that it can form an electric circuit with the components on the high-voltage switch 2 and the grounding switch 3 and be detected and alarmed;

[0052] like Figure 8-Figure 10 As shown, Figure 8 The switch moving blade 21 continues to move to the open position; Fig. 9 It is the inertia dynamic process of opening the gate, i.e. the maximum overshoot position; Fig.10 It is the opening stop position.

[0053] Specifically, the working principle of the high-voltage switch overshoot prevention warning intelligent device is as follows: the switch moving blade 21 is subjected to force so that the switch moving blade 21, the contact block 46, the support sleeve 44, and the signal blade plate 413 are connected in coordination, thereby forming a power-on circuit through the first signal terminal 42 and the second signal terminal 47 and the alarm module 48, and then the signal is transmitted for alarm processing, thereby avoiding the risk caused by the overshoot of the high-voltage switch 2 to the greatest extent and improving the stability of the high-voltage switch 2; the alarm module 48 can be connected in series with the position signals of the high-voltage switch 2 and the grounding switch 3 to control the connection or disconnection of the secondary signal circuit, and the high-voltage switch 2 is closed. When the high-voltage switch 2 is switched from grounding to opening, its position signal point is disconnected, ensuring that the primary high-voltage circuit is separated from the secondary signal circuit. When the high-voltage switch 2 is switched from closing to opening, its position signal point is closed, and when the switch moving blade 21 contacts the contact block 46 on the anti-overshoot warning component 4, the alarm module 48 forms a circuit and is connected to realize the alarm; and when the high-voltage switch 2 is switched from grounding closing to opening, the position signal point is disconnected, the switch moving blade 21 contacts the contact block 46, and the alarm module 48 circuit is disconnected, then the alarm cannot be triggered, thereby providing a stable and efficient warning for the overshoot prevention of the high-voltage switch 2, avoiding the occurrence of grounding short circuit faults, and then avoiding safety accidents.

[0054] The electronic components and models used in the present invention can be determined according to actual needs.

[0055] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0056] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An intelligent device for preventing overshoot and early warning of a high-voltage switch, comprising a high-voltage end (1) and a high-voltage switch (2) mounted at the lower end thereof, characterized in that: A grounding switch (3) is provided on one side of the high-voltage switch (2); a grounding blade body (31) is installed on the top of the grounding switch (3); an anti-overshoot warning component (4) is installed at the end of the grounding blade body (31); the anti-overshoot warning component (4) comprises an alarm module (48) for powering on and warning when the switch blade moves in a deviation; The anti-overshoot warning component (4) further comprises an insulating member (41) for being installed between conductors of different potentials or between a conductor and a grounding member, wherein a first signal terminal (42) is provided at a signal blade of the insulating member (41); A support sleeve (44) is provided on the side of the signal blade of the insulating member (41) and located at the first signal end (42); a contact block (46) is provided at the other end of the support sleeve (44); and a compression spring (45) is provided on the outer surface of the contact block (46) for matching with and adjusting its position; A fixing pin (43) is installed through the middle of the support sleeve (44), and acts as a fastener for connecting the contact block (46) and the support sleeve (44); A plurality of groups of outlet terminals (5) are arranged at the lower part of the high-voltage switch (2), and the anti-overshoot warning component (4) further comprises a second signal terminal (47) arranged at the end of the outlet terminal (5) and cooperating with the first signal terminal (42).

2. The high-voltage switch overshoot prevention warning intelligent device according to claim 1 is characterized in that: The high-voltage switch (2) comprises a switch moving blade (21) and a switch stationary blade (22), wherein the switch moving blade (21) is a dynamic blade.

3. The high-voltage switch overshoot prevention warning intelligent device according to claim 2 is characterized in that: The insulating member (41) is composed of a fixing plate (411), an insulating shed (412) and a signal blade plate (413).

4. The high-voltage switch overshoot prevention warning intelligent device according to claim 3 is characterized in that: The support sleeve (44) comprises a limiting step (442) connected to one end thereof for assisting the assembly of the compression spring (45) and the contact block (46); the limiting step (442) is hollow, and a guide hole (441) is formed through one end of the support sleeve (44) close to the limiting step (442).

5. The high-voltage switch overshoot prevention warning intelligent device according to claim 4 is characterized in that: A sliding groove (443) is provided through the middle of the support sleeve (44) and is used in conjunction with the fixing pin (43) to assemble the contact block (46). The other end of the support sleeve (44) is connected to the fixing end (444).

6. The high-voltage switch overshoot prevention warning intelligent device according to claim 5, characterized in that: The contact block (46) comprises a contact end body (461) that contacts the switch movable blade (21); the other end of the contact end body (461) is connected to a guide rod (462); and a fixing hole (463) that cooperates with the fixing pin (43) is formed through the surface of one end of the guide rod (462).

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