Phase control vacuum circuit breaker

Abstract

The utility model discloses a phase control vacuum circuit breaker, which comprises a supporting structure, an electrical structure, an actuating mechanism, a reversing mechanism, a feedback structure and an energy storage component, network voltage and network current signals are collected through the phase control module, the optimal position of the network voltage when the vacuum circuit breaker is closed and the optimal position of the network current when the vacuum circuit breaker is disconnected are calculated, delay time is set, the vacuum circuit breaker is controlled to be closed and disconnected at a specified phase angle through electric signals, and an electromagnet / permanent magnet extends out after a closing signal is sent out. Linear motion is converted into vertical motion of the transmission rod through all the components, the vacuum circuit breaker is driven to be closed at a specified phase angle, the electromagnet / permanent magnet retracts after a disconnection signal is sent, all the components are assisted by the reset spring to return to the original position, and the vacuum circuit breaker is driven to be disconnected at the specified phase angle. Damage of operation overvoltage and excitation inrush current to electrical performance of the vacuum circuit breaker is avoided, and the overall service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a locomotive vacuum circuit breaker, especially to a phase control vacuum circuit breaker using electromagnet or permanent magnet as power source and realizing closing and breaking at any phase angle through phase control module. BACKGROUND

[0002] The vacuum circuit breaker is a key component of the high-voltage electric appliance of the railway locomotive, is responsible for connecting and disconnecting the high-voltage of the catenary, and provides power source for the vehicle body, and the mechanical and electrical performance of the vacuum circuit breaker determines the working performance of the whole vehicle body.

[0003] The main structure of the vacuum circuit breaker is mechanical support component and electrical component, wherein the electrical component is a key component determining the performance of the vacuum circuit breaker, including vacuum switch tube and support insulator.

[0004] At present, most of the vacuum circuit breakers used by the railway system locomotive and motor train unit are pneumatic air holding structures, and the closing and breaking time and position of the vacuum circuit breaker are basically fixed values, and the time cannot be adjusted according to the network voltage and network flow, if the vacuum circuit breaker is closed and broken, the network voltage and network flow are in the peak position, and the operating overvoltage and excitation inrush current are easily generated, which can cause the insulation discharge and breakdown of the vacuum switch tube and support insulator, and seriously affect the service life of the vacuum circuit breaker.

[0005] Therefore, the utility model is provided. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a phase control vacuum circuit breaker to solve the above technical problems in the prior art.

[0007] The utility model aims at realizing the following technical scheme:

[0008] The phase control vacuum circuit breaker comprises a support structure, an electrical structure, an action mechanism, a reversing mechanism, a feedback structure and an energy storage component.

[0009] The energy storage component comprises a capacitor 3 and an electric control box 4, the capacitor 3 is connected with the phase control module 24 through the electric control box 4, and the phase control module 24 is internally provided with network voltage and network flow signal acquisition equipment.

[0010] Compared with the prior art, the phase control vacuum circuit breaker provided by the utility model acquires network voltage and network flow signals through the phase control module, calculates the optimal position of the network voltage when the vacuum circuit breaker is closed and the optimal position of the network flow when the vacuum circuit breaker is broken, sets the delay time, controls the vacuum circuit breaker to be closed and broken at the specified phase angle through the electric signal, avoids the damage of the operating overvoltage and excitation inrush current to the electrical performance of the vacuum circuit breaker, and improves the overall service life. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A phase control vacuum circuit breaker main body structure schematic view is provided for the embodiments of the present application.

[0012] Figure 2 A motion mechanism and feedback structure schematic view is provided for the embodiments of the present application.

[0013] Figure 3 A commutating mechanism and feedback structure schematic view is provided for the embodiments of the present application.

[0014] Figure 4 A commutating mechanism sectional view is provided for the embodiments of the present application.

[0015] Figure 5 A phase control module structure schematic view is provided for the embodiments of the present application.

[0016] In the drawings:

[0017] 1. base; 2. electromagnet / permanent magnet; 3. capacitor; 4. electric control box; 5. grounding switch; 6. grounding arm; 7. lower insulator; 8. upper insulator; 9. micro switch assembly; 10. micro switch mounting plate; 11. reset spring; 12. transmission shaft; 13. commutating shaft; 14. guide support; 15. transmission support; 16. main support; 17. electromagnet / permanent magnet mounting plate; 18. commutating plate; 19. cam plate; 20. transmission rod connecting seat; 21. positioning ring; 22. fixing bolt; 23. transmission rod; 24. phase control module. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and do not constitute a limitation on the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0019] First, the terms possibly used in the present text are explained as follows:

[0020] The term "and / or" means either of the two or both at the same time, for example, X and / or Y means three cases including "X" or "Y" or "X and Y".

[0021] The terms "comprise", "include", "contain", "have" or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example: including a technical feature element (such as raw materials, components, ingredients, carriers, dosage forms, materials, sizes, parts, components, mechanisms, devices, steps, processes, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or articles, etc.), should be interpreted as not only including the explicitly listed technical feature element, but also including other technical feature elements not explicitly listed in the art.

[0022] The term "consisting of" means excluding any technical feature element not explicitly listed. If this term is used in the claims, the term will make the claim closed, so that it does not contain technical feature elements other than the explicitly listed technical feature elements, except for conventional impurities related thereto. If the term only appears in a certain clause of the claim, it is only limited to the elements explicitly listed in that clause, and the elements described in other clauses are not excluded from the overall claim.

[0023] Unless otherwise specifically provided or limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example: it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in this paper can be understood according to the specific circumstances.

[0024] The contents not described in detail in the embodiments of the utility model belong to the prior art known to those skilled in the art. The embodiments of the utility model are not marked with specific conditions, and are carried out according to the conventional conditions in the art or the conditions recommended by the manufacturer. The reagents or instruments used in the embodiments of the utility model are not marked with the manufacturer, and are all conventional products that can be purchased on the market.

[0025] The phase control vacuum circuit breaker of the application comprises a support structure, an electrical structure, an action mechanism, a reversing mechanism, a feedback structure and an energy storage component.

[0026] The energy storage component comprises a capacitor 3 and an electric control box 4, the capacitor 3 is connected with a phase control module 24 through the electric control box 4, and the phase control module 24 is internally provided with a network voltage and network current signal acquisition device.

[0027] The support structure comprises a base 1, a main support 16, a positioning ring 21, wherein the outer circle of the positioning ring is matched with the inner hole of the base, the main support 16 is connected with the positioning ring 21 through bolts, the lower insulator 7 is connected with the positioning ring through bolts, the upper insulator 8 is connected with the lower insulator 7 through bolts, the grounding switch 5 is connected with the base 1 through bolts, the grounding arm 6 is installed to the grounding switch through bolts, the grounding switch is in the operation position when the vacuum circuit breaker is closed, the grounding switch is in the grounding position when the vacuum circuit breaker is opened, and the vacuum circuit breaker is integrally grounded.

[0028] The electrical structure comprises an upper insulator 8 and a lower insulator 7, wherein the lower insulator 7 is connected with the positioning ring 21 through threads, the lower insulator 7 is connected with the base 1 through threads, the upper insulator 8 is connected with the lower insulator 7 through threads, the high-voltage input of the upper insulator 8 is connected to the vehicle body transformer through the high-voltage input of the upper insulator 8 when the vacuum circuit breaker is closed.

[0029] The action mechanism comprises a transmission support 15, an electromagnet / permanent magnet 2, a transmission shaft 12 and a reset spring 11, wherein the electromagnet / permanent magnet 2 is installed to the transmission support 15 through bolts, the transmission shaft 12 is connected with the electromagnet / permanent magnet 2, and the reset spring 11 is installed between the transmission shaft 12 and the micro switch mounting plate 10.

[0030] The reversing mechanism comprises a reversing shaft 13, a guide support 14, a reversing plate 18, a transmission rod connecting seat 20 and a transmission rod 23, wherein the reversing shaft 13 is connected with the electromagnet / permanent magnet 2, the reversing shaft 13 is connected with the reversing plate 18, the reversing plate 18 is connected with the transmission rod connecting seat 20 through bolts, and the transmission rod connecting seat 20 is connected with the transmission rod 23 through bolts.

[0031] The feedback structure comprises a micro switch assembly 9, a cam plate 19 and a micro switch mounting plate 10, wherein the micro switch mounting plate 10 is connected with the main support 16 through bolts, the cam plate 19 is installed on the transmission shaft 12, and the micro switch assembly 9 is fixed to the mounting plate 10.

[0032] As can be seen from the above, the phase control vacuum circuit breaker of the embodiment of the application collects the network voltage and network current signals through the phase control module, calculates the optimal position of the network voltage when the vacuum circuit breaker is closed and the optimal position of the network current when the vacuum circuit breaker is opened, sets the delay time, controls the vacuum circuit breaker to be closed and opened at the specified phase angle through electric signals, extends the electromagnet / permanent magnet after the closing signal is sent, converts the linear motion into the vertical motion of the transmission rod through each component, drives the vacuum circuit breaker to be closed at the specified phase angle, retracts the electromagnet / permanent magnet after the opening signal is sent, and each component is restored to the original position through the reset spring, drives the vacuum circuit breaker to be opened at the specified phase angle, avoids the damage of the operating overvoltage and the magnetizing inrush current to the electrical performance of the vacuum circuit breaker, and improves the overall service life.

[0033] In order to more clearly show the technical solutions provided by the present application and the technical effects produced, the present application is described in detail below with specific examples.

[0034] Embodiment 1

[0035] As Figures 1 to 5 shown:

[0036] A phase control vacuum circuit breaker comprises a support structure, an electrical structure, an action mechanism, a reversing mechanism, a feedback structure, an energy storage component and a phase control module.

[0037] The support structure comprises a base 1, a main support 16 and a positioning ring 21, wherein the outer circle of the positioning ring is matched with the inner hole of the base, the main support 16 is connected with the positioning ring 21 through bolts, the lower insulator 7 is connected with the positioning ring through bolts, the upper insulator 8 is connected with the lower insulator 7 through bolts, the grounding switch 5 is connected with the base 1 through bolts, the grounding arm 6 is installed to the grounding switch through bolts, the grounding switch is in the running position when the vacuum circuit breaker is closed, and the grounding switch is in the grounding position when the vacuum circuit breaker is disconnected, and the whole vacuum circuit breaker is grounded.

[0038] The electrical structure comprises the upper insulator 8 and the lower insulator 7, wherein the lower insulator 7 is connected with the positioning ring 21 through threads, the lower insulator 7 is connected with the base 1 through threads, the upper insulator 8 is connected with the lower insulator 7 through threads, the high voltage of the overhead line is transmitted to the vehicle body transformer through the high voltage input of the upper insulator 8 and the input end when the vacuum circuit breaker is closed, the high voltage is transmitted to each component of the vehicle body through the transformer, and the vehicle body is controlled to run.

[0039] The action mechanism comprises a transmission support 15, an electromagnet / permanent magnet 2, a transmission shaft 12 and a reset spring 11, wherein the electromagnet / permanent magnet 2 is installed to the transmission support 15 through bolts, the transmission shaft 12 is connected with the electromagnet / permanent magnet 2, the electromagnet / permanent magnet 2 drives the linear motion of the transmission shaft 12, the reset spring 11 is installed between the transmission shaft 12 and the micro switch mounting plate 10, the transmission shaft drives the reversing mechanism to move, and the reset spring 11 is compressed until the vacuum circuit breaker is closed, when the vacuum circuit breaker performs the disconnecting action, the reset spring 11 assists the reset of the transmission shaft 12 and the electromagnet / permanent magnet 2 until the vacuum circuit breaker is disconnected.

[0040] The reversing mechanism comprises a reversing shaft 13, a guide support 14, a reversing plate 18, a transmission rod connecting seat 20 and a transmission rod 23, wherein the reversing shaft 13 is connected with the electromagnet / permanent magnet 2, the reversing shaft 13 is connected with the reversing plate 18, the reversing shaft 13 moves along the guide support 14 to convert the linear motion of the electromagnet / permanent magnet 2 into vertical motion, the reversing plate 18 is connected with the transmission rod connecting seat 20 through bolts, and the transmission rod connecting seat 20 is connected with the transmission rod 23 through bolts to convert the linear motion of the electromagnet / permanent magnet 2 into vertical motion of the transmission rod 23, thereby driving the vacuum switch tube to close.

[0041] The feedback structure comprises a microswitch assembly 9, a cam plate 19 and a microswitch mounting plate 10, wherein the microswitch mounting plate 10 is connected with the main support 16 through bolts, the cam plate 19 is installed on the transmission shaft 12 and moves linearly along with the transmission shaft 12, the microswitch assembly 9 is fixed to the mounting plate 10, the electromagnet / permanent magnet 2 drives the transmission shaft 12 to move linearly, thereby driving the cam plate 19 to move linearly, the cam plate 19 compresses and releases the microswitch to transmit the opening and closing signals of the vacuum circuit breaker to the phase control module 24 through the electric control box 4, and finally to the vehicle body.

[0042] The energy storage component comprises a capacitor 3 and an electric control box 4, the capacitor 3 is connected with the phase control module 24 through the electric control box to be charged, after the vacuum circuit breaker receives the closing instruction, the phase control module 24 sends an electric signal through the electric control box 4, and the capacitor 3 drives the electromagnet / permanent magnet 2 to move linearly, and the linear motion is converted into vertical motion of the transmission rod 23 through the transmission shaft 12, the reversing shaft 13 and the reversing plate 18.

[0043] The phase control module 24 internally installs a network voltage and current signal acquisition device to acquire the network voltage and current signals, calculate the optimal position of the network voltage when the vacuum circuit breaker is closed and the optimal position of the network current when the vacuum circuit breaker is opened, set a delay time, control the vacuum circuit breaker to be closed and opened at a specified phase angle through an electric signal, avoid the damage of the operating overvoltage and the excitation inrush current to the electrical performance of the vacuum circuit breaker, and improve the overall service life.

[0044] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. The information disclosed in the background section of the present application is only intended to deepen the understanding of the overall background technology of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes the prior art known by the skilled person in the art.

Claims

1. A phase control vacuum circuit breaker characterized by, The support structure, the electrical structure, the action mechanism, the reversing mechanism, the feedback structure, and the energy storage component are included. The energy storage component includes a capacitor (3) and an electric control box (4), and the capacitor (3) is connected with a phase control module (24) through the electric control box (4), and the phase control module (24) is internally provided with a network pressure and network flow signal acquisition device.

2. The phase control vacuum circuit breaker according to claim 1, characterized in that The support structure includes a base (1), a main support (16), and a positioning ring (21), wherein the outer circle of the positioning ring is matched with the inner hole of the base through bolt connection, the main support (16) is connected with the positioning ring (21) through bolts, the lower insulator (7) is connected with the positioning ring through bolts, the upper insulator (8) is connected with the lower insulator (7) through bolts, the grounding switch (5) is connected with the base (1) through bolts, the grounding arm (6) is installed to the grounding switch through bolts, the grounding switch is in the running position when the vacuum circuit breaker is closed, the grounding switch is in the grounding position when the vacuum circuit breaker is opened, and the whole vacuum circuit breaker is grounded.

3. The phase control vacuum circuit breaker according to claim 2, characterized in that The electrical structure includes the upper insulator (8) and the lower insulator (7), wherein the lower insulator (7) is connected with the positioning ring (21) through threads, the lower insulator (7) is connected with the base (1) through threads, the upper insulator (8) is connected with the lower insulator (7) through threads, and the high-voltage input of the upper insulator (8) is connected to the vehicle body transformer when the vacuum circuit breaker is closed.

4. The phase control vacuum circuit breaker according to claim 3, characterized in that The action mechanism includes a transmission support (15), an electromagnet / permanent magnet (2), a transmission shaft (12), and a reset spring (11), wherein the electromagnet / permanent magnet (2) is connected and installed to the transmission support (15) through bolts, the transmission shaft (12) is connected with the electromagnet / permanent magnet (2), and the reset spring (11) is installed between the transmission shaft (12) and a micro switch mounting plate (10).

5. The phase control vacuum circuit breaker according to claim 4, characterized in that The reversing mechanism includes a reversing shaft (13), a guide support (14), a reversing plate (18), a transmission rod connecting seat (20), and a transmission rod (23), wherein the reversing shaft (13) is connected with the electromagnet / permanent magnet (2), the reversing shaft (13) is connected with the reversing plate (18), the reversing plate (18) is connected with the transmission rod connecting seat (20) through bolts, and the transmission rod connecting seat (20) is connected with the transmission rod (23) through bolts.

6. The phase control vacuum circuit breaker according to claim 5, characterized in that The feedback structure includes a micro switch assembly (9), a cam plate (19), and a micro switch mounting plate (10), wherein the micro switch mounting plate (10) is connected with the main support (16) through bolts, the cam plate (19) is installed on the transmission shaft (12), and the micro switch assembly (9) is fixed to the mounting plate (10).

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