Electromagnetic repulsion device

Abstract

The invention relates to the technical field of electromagnetic repulsion mechanisms, and discloses an electromagnetic repulsion device which comprises a plurality of electromagnetic driving units, each electromagnetic driving unit comprises a driving part and a driving rod extending in the vertical direction, the power output end of each driving part is connected with the corresponding driving rod and used for driving the corresponding driving rod to slide in the vertical direction, and a contact is arranged at the upper end of each driving rod; and the driving rods of the plurality of electromagnetic driving units are detachably arranged on the synchronous disc in a penetrating manner. According to the electromagnetic repulsion device provided by the invention, reliable action of the circuit breaker can still be kept when one operating mechanism breaks down, and the requirement of synchronous and rapid opening and closing is met.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic repulsion mechanisms, and in particular to an electromagnetic repulsion device. Background Art

[0002] At present, with the continuous development of power systems, the capacity of power systems is increasing, and the short-circuit current level after a short circuit occurs in the system is also increasing. Multiple break parallel connection has become one of the effective means to increase the breaking capacity of circuit breakers and disconnect large short-circuit currents.

[0003] The electromagnetic repulsion mechanism for operating the circuit breaker has the advantages of high opening speed and short opening time. However, when multiple breakers are connected in parallel, there is a problem of asynchronous operation due to different signal transmission delays and the dispersion of the mechanism's actions. In addition, when multiple circuit breakers are connected in parallel and there are multiple operating mechanisms, if one of the operating mechanisms fails and cannot operate, it will lead to opening failure and untimely opening, which is very likely to cause fire safety problems. Summary of the invention

[0004] The purpose of the present invention is to provide an electromagnetic repulsion device which can maintain reliable operation of the circuit breaker when an operating mechanism fails, thereby meeting the requirements of synchronous rapid opening and closing.

[0005] In order to achieve the above object, the present invention provides an electromagnetic repulsion device, comprising:

[0006] A plurality of electromagnetic drive units, each of which comprises a drive part and a drive rod extending in the up-down direction, wherein a power output end of the drive part is connected to the drive rod for driving the drive rod to slide in the up-down direction, and a contact is provided at the upper end of the drive rod;

[0007] A synchronization disk, wherein the driving rods of the plurality of electromagnetic driving units are detachably mounted on the synchronization disk.

[0008] Further, the synchronization disk includes a first ring body, a second ring body and a plurality of first connecting blocks, the first ring body and the second ring body are concentrically arranged at intervals, the first ring body is located on the inner side of the second ring body, the first connecting block is arranged between the first ring body and the second ring body, and is used to connect the first ring body and the second ring body, the driving rod passes through the first connecting block in the up and down directions, and is detachably connected to the first connecting block, and the plurality of first connecting blocks are evenly arranged between the first ring body and the second ring body along the circumference of the first ring body.

[0009] Furthermore, the synchronization disk also includes a connecting rod, the first ring body is uniformly provided with a plurality of first through holes along its radial direction, the second ring body is uniformly provided with a plurality of second through holes along its radial direction, the plurality of first through holes correspond one to one with the plurality of second through holes, the first connecting block is provided with a third through hole and a fourth through hole, the extension directions of the third through hole and the fourth through hole are consistent with the extension directions of the first through hole and the second through hole corresponding to each other, the connecting rod sequentially penetrates into the second through hole, the third through hole and the first through hole, the first connecting block is provided with a through hole in the up and down direction for the driving rod to pass through, the fourth through hole is connected with the through hole, the connecting rod sequentially penetrates into the second through hole, the fourth through hole, the driving rod and then into the first through hole.

[0010] Furthermore, the synchronization disk also includes a plurality of second connecting blocks, a fifth through hole is opened on the second connecting block, an extension direction of the fifth through hole is consistent with an extension direction of the first through hole and the second through hole which correspond to each other, the connecting rod is inserted into the second through hole, the fifth through hole and the first through hole in sequence, and the plurality of second connecting blocks are evenly arranged between the first ring body and the second ring body along the circumference of the first ring body.

[0011] Furthermore, the electromagnetic repulsion device also includes a control component, the driving part includes a repulsion disk and an opening coil and a closing coil spaced apart from top to bottom, the repulsion disk is movably arranged between the opening coil and the closing coil, the driving rod passes through the opening coil and is fixedly connected to the repulsion disk, and the opening coil, the closing coil and the control component are electrically connected.

[0012] Furthermore, the repulsion disk includes a support plate and a moving coil, the support plate is provided with a first mounting groove, and the moving coil is mounted in the first mounting groove.

[0013] Furthermore, the support plate is made of non-magnetic material.

[0014] Furthermore, the driving unit also includes two magnetic conductive rings, and a second mounting groove is opened on the inner wall of the magnetic conductive ring. The outer edge of the opening coil is accommodated in the second mounting groove of one of the magnetic conductive rings, and the outer edge of the closing coil is accommodated in the second mounting groove of the other magnetic conductive ring.

[0015] Compared with the prior art, an electromagnetic repulsion device in an embodiment of the present invention has the following beneficial effects: multiple electromagnetic drive units are provided, and the drive rod is detachably inserted into the synchronization disk. When the drive part drives the drive rod to slide upward, since the drive rod is installed on the synchronization disk, under the action of the synchronization disk, the drive rods of other electromagnetic drive units will also be driven to slide upward. If any of the electromagnetic drive units fails, the drive part of the electromagnetic drive unit cannot drive the drive rod to slide, and other electromagnetic drive units drive their drive rods to slide. Under the action of the synchronization disk, the drive rod of the electromagnetic drive unit with the failure is driven to slide upward, and the circuit breaker's opening and closing action can still be kept reliable, meeting the requirements of synchronous rapid opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an electromagnetic repulsion device according to an embodiment of the present invention;

[0017] Figure 2 is a schematic structural diagram of Embodiment 1 of the electromagnetic repulsion device of the embodiment of the present invention;

[0018] Figure 3 is a structural schematic diagram of Embodiment 2 of the electromagnetic repulsion device of the embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of a third embodiment of an electromagnetic repulsion device according to an embodiment of the present invention;

[0020] Figure 5 is a structural diagram of a first ring body of an electromagnetic repulsion device according to an embodiment of the present invention;

[0021] Figure 6 is a structural diagram of a second ring body of the electromagnetic repulsion device according to an embodiment of the present invention;

[0022] Figure 7 is a structural diagram of a first connection block of an electromagnetic repulsion device according to an embodiment of the present invention;

[0023] Figure 8 is a structural diagram of a second connection block of an electromagnetic repulsion device according to an embodiment of the present invention;

[0024] In the figure, 1, electromagnetic drive unit; 11, drive part; 111, repulsion disk; 1111, support plate; 11111, first mounting groove; 1112, moving coil; 112, opening coil; 113, closing coil; 114, magnetic conductive ring; 1141, second mounting groove; 12, drive rod; 13, contact; 2, synchronization disk; 21, first ring body; 211, first through hole; 22, second ring body; 221, second through hole; 23, first connecting block; 231, third through hole; 232, fourth through hole; 233, through hole; 24, second connecting block; 241, fifth through hole. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "lateral", "longitudinal" and the like used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only used to facilitate the description of the present invention and simplify the description, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present invention, the terms "provided with", "set", "connected", and "placed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0029] The technical solution of the present invention is further described below in conjunction with embodiments and drawings.

[0030] like Figure 1 As shown, an electromagnetic repulsion device according to an embodiment of the present invention includes:

[0031] A plurality of electromagnetic drive units 1, each of which comprises a drive portion 11 and a drive rod 12 extending in an up-down direction, wherein a power output end of the drive portion 11 is connected to the drive rod 12 for driving the drive rod 12 to slide in an up-down direction, and a contact 13 is provided at an upper end of the drive rod 12;

[0032] The synchronous disk 2 , and the driving rods 12 of the plurality of electromagnetic driving units 1 are detachably mounted on the synchronous disk 2 .

[0033] Based on the above technical solution, a plurality of electromagnetic drive units 1 are provided, and a drive rod 12 is detachably mounted on the synchronization disk 2. When the drive portion 11 drives the drive rod 12 to slide upward, since the drive rod 12 is installed on the synchronization disk 2, under the action of the synchronization disk 2, the drive rods 12 of other electromagnetic drive units 1 will also be driven to slide upward. If any of the electromagnetic drive units 1 fails, the drive portion 11 of the electromagnetic drive unit 1 cannot drive the drive rod 12 to slide, and other electromagnetic drive units 1 drive their drive rods 12 to slide. Under the action of the synchronization disk 2, the drive rod 12 of the electromagnetic drive unit 1 that fails is driven to slide upward, and the circuit breaker's opening and closing action can still be kept reliable, meeting the requirements of synchronous rapid opening and closing.

[0034] Preferably, if Figure 5 , 6 As shown in Figures 7 and 8, the synchronous disk 2 includes a first ring body 21, a second ring body 22 and a plurality of first connecting blocks 23. The first ring body 21 and the second ring body 22 are concentrically arranged at intervals. The first ring body 21 is located on the inner side of the second ring body 22. The first connecting block 23 is arranged between the first ring body 21 and the second ring body 22 for connecting the first ring body 21 and the second ring body 22. The driving rod 12 passes through the first connecting block 23 in the up and down directions and is detachably connected to the first connecting block 23. The plurality of first connecting blocks 23 are evenly arranged between the first ring body 21 and the second ring body 22 along the circumference of the first ring body 21. The driving rod 12 is installed on the first connecting block 23, and the first connecting block 23 is connected between the first ring body 21 and the second ring body 22, which increases the flexibility of the installation of the first connecting block 23. The number or installation position of the first connecting block 23 can be set to meet actual needs; multiple first connecting blocks 23 are evenly arranged between the first ring body 21 and the second ring body 22, which ensures the sliding stability of the synchronization disk 2, ensures reliable on-off contact, and avoids the phenomenon of inaccurate docking of the contacts 13.

[0035] More preferably, the synchronous disk 2 also includes a connecting rod (the connecting rod is not shown in the drawings of the specification), the first ring body 21 is uniformly provided with a plurality of first through holes 211 along its radial direction, the second ring body 22 is uniformly provided with a plurality of second through holes 221 along its radial direction, the plurality of first through holes 211 correspond one to one with the plurality of second through holes 221, the first connecting block 23 is provided with a third through hole 231 and a fourth through hole 232, the extension directions of the third through hole 231 and the fourth through hole 232 are consistent with the extension directions of the corresponding first through hole 211 and the second through hole 221, the connecting rod sequentially penetrates the second through hole 221, the third through hole 231 and the first through hole 211, the first connecting block 23 is provided with a through hole 233 for the driving rod 12 to pass through in the up and down direction, the fourth through hole 232 is connected with the through hole 233, the connecting rod sequentially penetrates the second through hole 221, the fourth through hole 232, penetrates the driving rod 12 and then penetrates the first through hole 211.

[0036] In a specific embodiment, two third through holes 231 are formed on the first connection block 23, and the two third through holes 231 are located on both sides of the fourth through hole 232. During installation, the connection rod is first inserted into the two third through holes 231, at which time the first connection block 23 is limited, and then the drive rod 12 is inserted into the through hole 233, and then the connection rod is inserted into the fourth through hole 232 and penetrates the drive rod 12, so that the installation of the first connection block 23 and the drive rod 12 is completed, and the operation is simple and convenient. If the connection rod is first passed through the fourth through hole 232, the first connection block 23 and the drive rod 12 need to be aligned at the same time, which is troublesome.

[0037] More preferably, if Figure 8 As shown, the synchronization disk 2 also includes a plurality of second connecting blocks 24, a fifth through hole 241 is opened on the second connecting block 24, the extension direction of the fifth through hole 241 is consistent with the extension direction of the first through hole 211 and the second through hole 221 corresponding to each other, the connecting rod is inserted into the second through hole 221, the fifth through hole 241 and the first through hole 211 in sequence, and the plurality of second connecting blocks 24 are evenly arranged between the first ring body 21 and the second ring body 22 along the circumference of the first ring body 21.

[0038] Embodiment 1,

[0039] like Figure 2 As shown, three first connecting blocks 23 are arranged between the first ring body 21 and the second ring body 22. The three first connecting blocks 23 are symmetrically arranged with respect to the center of the circle of the first ring body 21. A second connecting block 24 is arranged between every two adjacent first connecting blocks 23. The second connecting block 24 is located in the middle of the gap between the two adjacent first connecting blocks 23.

[0040] Embodiment 2:

[0041] like Figure 3 As shown, four first connecting blocks 23 are arranged between the first ring body 21 and the second ring body 22. The four first connecting blocks 23 are symmetrically arranged with respect to the center of the first ring body 21. A second connecting block 24 is arranged between every two adjacent first connecting blocks 23. The second connecting block 24 is located in the middle of the gap between the two adjacent first connecting blocks 23.

[0042] Embodiment 3,

[0043] like Figure 4 As shown, five first connection blocks 23 are arranged between the first ring body 21 and the second ring body 22 , and the five first connection blocks 23 are arranged symmetrically about the center of the first ring body 21 .

[0044] Preferably, if Figure 1As shown, the electromagnetic repulsion device also includes a control component (the control component is not shown in the drawings of the specification), the driving part 11 includes a repulsion disk 111 and an opening coil 112 and a closing coil 113 spaced apart from top to bottom, the repulsion disk 111 is movably arranged between the opening coil 112 and the closing coil 113, the driving rod 12 passes through the opening coil 112 and is fixedly connected to the repulsion disk 111, and the opening coil 112, the closing coil 113 are electrically connected to the control component.

[0045] Specifically,

[0046] When the circuit breaker is opened, an opening signal is sent to each electromagnetic repulsion device at the same time, and the control component generates a pulse current flowing into the opening coil 112, the closing coil 113, and the moving coil 1112. The opening coil 112 and the moving coil 1112 have currents in opposite directions, and the moving coil 1112 is subjected to a downward electromagnetic repulsion provided by the opening coil 112. The closing coil 113 and the moving coil 1112 have currents in the same direction, and the moving coil 1112 is subjected to a downward electromagnetic attraction provided by the closing coil 113, thereby driving the driving rod 12 to slide downward quickly to achieve opening; When the circuit breaker is closed, a closing signal is sent to each electromagnetic repulsion device at the same time, and the control component generates a pulse current flowing into the opening coil 112, the closing coil 113, and the moving coil 1112. The opening coil 112 and the moving coil 1112 pass through the same current direction, and the moving coil 1112 is subjected to the upward electromagnetic attraction force provided by the opening coil 112. The closing coil 113 and the moving coil 1112 pass through the opposite current direction, and the moving coil 1112 is subjected to the upward electromagnetic repulsion force provided by the closing coil 113, thereby driving the driving rod 12 to slide upward quickly to achieve closing.

[0047] More preferably, the repulsion disk 111 includes a support plate 1111 and a moving coil 1112 , the support plate 1111 is provided with a first mounting groove 11111 , and the moving coil 1112 is installed in the first mounting groove 11111 .

[0048] More preferably, the support plate 1111 is made of non-magnetic material.

[0049] More preferably, the driving part 11 further comprises two magnetic conductive rings 114, and a second mounting groove 1141 is formed on the inner wall of the magnetic conductive ring 114, and the outer edge of the opening coil 112 is accommodated in the second mounting groove 1141 of one magnetic conductive ring 114, and the outer edge of the closing coil 113 is accommodated in the second mounting groove 1141 of the other magnetic conductive ring 114. The magnetic conductive ring 114 is made of a material with high relative magnetic permeability and low electrical conductivity to ensure that the magnetic field energy generated by the opening coil 112, the closing coil 113, and the moving coil 1112 can be effectively utilized.

[0050] In summary, an embodiment of the present invention provides an electromagnetic repulsion device, which is provided with multiple electromagnetic drive units 1, and the drive rod 12 is detachably inserted into the synchronization disk 2. When the drive part 11 drives the drive rod 12 to slide upward, since the drive rod 12 is installed on the synchronization disk 2, under the action of the synchronization disk 2, the drive rods 12 of other electromagnetic drive units 1 will also be driven to slide upward. If any of the electromagnetic drive units 1 fails, the drive part 11 of the electromagnetic drive unit 1 cannot drive the drive rod 12 to slide, and the other electromagnetic drive units 1 drive their drive rods 12 to slide. Under the action of the synchronization disk 2, the drive rod 12 of the electromagnetic drive unit 1 that fails is driven to slide upward, and the circuit breaker's opening and closing action can still be kept reliable, meeting the requirements of synchronous rapid opening and closing.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An electromagnetic repulsion device, characterized in that: include: A plurality of electromagnetic drive units (1), the electromagnetic drive units (1) comprising a drive portion (11) and a drive rod (12) extending in an up-down direction, a power output end of the drive portion (11) being connected to the drive rod (12) for driving the drive rod (12) to slide in an up-down direction, and a contact (13) being provided at the upper end of the drive rod (12); A synchronization disk (2), wherein the driving rods (12) of the plurality of electromagnetic drive units (1) are detachably mounted on the synchronization disk (2).

2. The electromagnetic repulsion device according to claim 1, characterized in that: The synchronous disk (2) comprises a first ring body (21), a second ring body (22) and a plurality of first connecting blocks (23); the first ring body (21) and the second ring body (22) are arranged concentrically and spaced apart; the first ring body (21) is located on the inner side of the second ring body (22); the first connecting block (23) is arranged between the first ring body (21) and the second ring body (22) and is used to connect the first ring body (21) and the second ring body (22); the driving rod (12) passes through the first connecting block (23) in the up-down direction and is detachably connected to the first connecting block (23); and the plurality of first connecting blocks (23) are evenly arranged between the first ring body (21) and the second ring body (22) along the circumference of the first ring body (21).

3. The electromagnetic repulsion device according to claim 2, characterized in that: The synchronous disk (2) further comprises a connecting rod, the first ring body (21) is uniformly provided with a plurality of first through holes (211) along its radial direction, the second ring body (22) is uniformly provided with a plurality of second through holes (221) along its radial direction, the plurality of first through holes (211) and the plurality of second through holes (221) are in one-to-one correspondence, the first connecting block (23) is provided with a third through hole (231) and a fourth through hole (232), the extension direction of the third through hole (231) and the fourth through hole (232) being the same as the first through hole (211) corresponding to each other. The connecting rod is inserted into the second through hole (221), the third through hole (231) and the first through hole (211) in sequence. The first connecting block (23) is provided with a through hole (233) for the driving rod (12) to pass through in the up-down direction. The fourth through hole (232) is connected to the through hole (233). The connecting rod is inserted into the second through hole (221), the fourth through hole (232) and the driving rod (12) in sequence and then into the first through hole (211).

4. The electromagnetic repulsion device according to claim 3, characterized in that: The synchronization disk (2) further comprises a plurality of second connection blocks (24), each of which is provided with a fifth through hole (241), the extension direction of the fifth through hole (241) being consistent with the extension direction of the first through hole (211) and the second through hole (221) which correspond to each other, the connection rod sequentially penetrates the second through hole (221), the fifth through hole (241) and the first through hole (211), and the plurality of second connection blocks (24) are evenly arranged between the first ring body (21) and the second ring body (22) along the circumference of the first ring body (21).

5. The electromagnetic repulsion device according to claim 1, characterized in that: It also includes a control component, the driving part (11) includes a repulsion disk (111) and an opening coil (112) and a closing coil (113) arranged at intervals from top to bottom, the repulsion disk (111) is movably arranged between the opening coil (112) and the closing coil (113), the driving rod (12) passes through the opening coil (112) and is fixedly connected to the repulsion disk (111), and the opening coil (112) and the closing coil (113) are electrically connected to the control component.

6. The electromagnetic repulsion device according to claim 5, characterized in that: The repulsion disk (111) comprises a support plate (1111) and a moving coil (1112); a first mounting groove (11111) is provided on the support plate (1111); and the moving coil (1112) is installed in the first mounting groove (11111).

7. The electromagnetic repulsion device according to claim 6, characterized in that: The support plate (1111) is made of non-magnetic conductive material.

8. The electromagnetic repulsion device according to claim 5, characterized in that: The driving part (11) further comprises two magnetic conductive rings (114), the inner walls of the magnetic conductive rings (114) being provided with second mounting grooves (1141), the outer edge of the opening coil (112) being accommodated in the second mounting groove (1141) of one of the magnetic conductive rings (114), and the outer edge of the closing coil (113) being accommodated in the second mounting groove (1141) of the other of the magnetic conductive rings (114).

Images