Line-out terminal and trimmer switch

Abstract

An outgoing line sealing plate and a capacity adjusting switch belong to the technical field of electric power. The outgoing line sealing plate comprises a sealing plate body and a plurality of static contacts. The plurality of static contacts are arranged at intervals in the sealing plate body along a preset direction. The size of at least two static contacts located at the inner side of the sealing plate body in the preset direction is different. The outgoing line sealing plate can conveniently switch the wiring mode. The capacity adjusting switch comprises the outgoing line sealing plate, has the characteristics of integrated contact structure, reduced production cost and simple operation and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power, in particular to an outgoing line sealing plate and a capacity regulating switch. BACKGROUND

[0002] The outgoing line sealing plate is one of the components of the capacity regulating switch. In the prior art, the outgoing line sealing plate usually comprises a plurality of static contacts for wiring, and different wiring modes can be realized through the plurality of static contacts.

[0003] However, the inventor has found through research that the existing outgoing line sealing plate cannot realize the switching of Y-type wiring and Z-type wiring. SUMMARY

[0004] The purpose of the present application is to provide an outgoing line sealing plate and a capacity regulating switch which can conveniently realize the switching of Y-type wiring and Z-type wiring.

[0005] Embodiments of the present application are implemented as follows:

[0006] In a first aspect, the embodiments of the present application provide an outgoing line sealing plate comprising a sealing plate body and a plurality of static contacts, the plurality of static contacts being arranged at intervals along a preset direction on the sealing plate body, and the sizes of at least two static contacts in the preset direction at the inner side of the sealing plate body being different.

[0007] In an optional implementation, the plurality of static contacts are divided into a plurality of groups, each group of static contacts comprising a first contact and a second contact for connecting a low-voltage coil, and the sizes of the first contact and the second contact in the preset direction at the inner side of the sealing plate body being different.

[0008] In an optional implementation, each group of static contacts comprises three first contacts and one second contact arranged in sequence along the preset direction, and the size of the second contact in the preset direction at the inner side of the sealing plate body is greater than the size of the first contact in the preset direction at the inner side of the sealing plate body.

[0009] In an optional implementation, each group of static contacts further comprises a third contact for connecting a zero line.

[0010] In an optional implementation, in each group of static contacts, the number of third contacts is two, one of which is located between the first contact and the second contact, and the other is located on the side of the first contact away from the second contact.

[0011] In an optional implementation, the outgoing line sealing plate further comprises a plurality of movable contacts for connecting the plurality of static contacts, and the plurality of movable contacts are all slidingly fitted to the sealing plate body along the preset direction, so that the connection mode of the plurality of movable contacts and the plurality of static contacts can be switched.

[0012] In an optional implementation, the preset direction is the length direction of the sealing plate body.

[0013] In an optional embodiment, the sealing plate body is provided with a protruding structure for reinforcing the structural strength of the sealing plate body.

[0014] In an optional embodiment, the sealing plate body is provided with a sealing groove for mounting a sealing strip and mounting holes for mounting an outlet sealing plate, the sealing groove extending along the edge of the sealing plate body, and the mounting holes being arranged at intervals along the extension direction of the sealing groove.

[0015] In a second aspect, the embodiments of the present application provide a capacity-adjustable switch comprising the outlet sealing plate of any one of the preceding embodiments.

[0016] The embodiments of the present application have the following beneficial effects:

[0017] The outlet sealing plate comprises a sealing plate body and a plurality of static contacts, the plurality of static contacts being arranged at intervals along a preset direction on the sealing plate body, and the sizes of the portions of the at least two static contacts located inside the sealing plate body in the preset direction being different, so that the sizes of the portions of the plurality of static contacts located inside the sealing plate body are diversified, i.e., some of the plurality of static contacts have large sizes and some have small sizes, which facilitates the realization of different connection modes between the plurality of static contacts and the plurality of moving contacts when the plurality of moving contacts of the outlet sealing plate slide relative to the plurality of static contacts, thereby conveniently realizing the switching of Y-type wiring mode and Z-type wiring mode and effectively making up for the defects of the existing technical solutions.

[0018] The capacity-adjustable switch comprises the outlet sealing plate described above, and thus has the characteristic of simple operation and use. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and thus should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 The structural schematic diagram of the outside of the outlet sealing plate provided by the embodiments of the present application is shown in the figure.

[0021] Figure 2 The structural schematic diagram of the inside of the outlet sealing plate provided by the embodiments of the present application is shown in the figure.

[0022] Figure 3 The arrangement schematic diagram of the static contacts of the outlet sealing plate provided by the embodiments of the present application is shown in the figure.

[0023] Figure 4 The schematic diagram of Y-type wiring in the prior art is shown in the figure.

[0024] Figure 5 is a schematic diagram of Z-type wiring in the prior art;

[0025] Figure 6 is a schematic diagram of the arrangement of the male contact and the female contact of the outgoing line sealing plate provided by the embodiment of the present application when used in Y-type wiring;

[0026] Figure 7 is a schematic diagram of the application of the male contact and the female contact of the outgoing line sealing plate provided by the embodiment of the present application in Y-type wiring;

[0027] Figure 8 is a schematic diagram of the arrangement of the male contact and the female contact of the outgoing line sealing plate provided by the embodiment of the present application when used in Z-type wiring;

[0028] Figure 9 is a schematic diagram of the application of the male contact and the female contact of the outgoing line sealing plate provided by the embodiment of the present application in Z-type wiring.

[0029] Icon: 100 - outgoing line sealing plate; 102 - preset direction; 110 - sealing plate body; 112 - sealing groove; 114 - mounting hole; 116 - protruding structure; 120 - female contact; 122 - first contact; 124 - second contact; 126 - third contact; 130 - male contact. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Please refer to Figure 1 and Figure 2 This invention provides a line-out sealing plate 100, which can be used as a component of a capacity-adjusting switch, used to connect electrical equipment such as transformers. The line-out sealing plate 100 includes a sealing plate body 110 and a plurality of stationary contacts 120. The plurality of stationary contacts 120 are spaced apart on the sealing plate body 110 along a predetermined direction 102, and at least two stationary contacts 120 have different dimensions on the predetermined direction 102 at portions located inside the sealing plate body 110.

[0036] The sealing plate body 110 is formed by covering multiple stationary contacts 120 with thermosetting insulating material. Because it is formed in one piece, it has the characteristics of high reliability and good sealing performance.

[0037] The sealing plate body 110 is generally rectangular in shape, with multiple protruding structures 116 on both its inner and outer sides. The protruding structures 116 enhance the structural strength of the sealing plate body 110, preventing it from being easily damaged or broken. Furthermore, some of the protruding structures 116 are located between multiple stationary contacts 120, effectively increasing the creepage distance between the corresponding stationary contacts 120, thereby effectively improving the insulation performance of the sealing plate body 110.

[0038] The sealing plate body 110 is also provided with a sealing groove 112 for installing a sealing strip and mounting holes 114 for installing a cable outlet sealing plate 100. The sealing groove 112 extends along the edge of the sealing plate body 110 and is generally rectangular in shape, with a correspondingly shaped sealing strip installed within the sealing groove 112. In this embodiment, the sealing groove 112 is located on the outer side of the sealing plate body 110. In other embodiments, the sealing groove 112 may also be located on the inner side of the sealing plate body 110 or both on the inner and outer sides. There are multiple mounting holes 114, which are located within the area enclosed by the sealing groove 112 and are evenly spaced along the extending direction of the sealing groove 112.

[0039] The sealing groove 112 and sealing strip can effectively improve the sealing performance of the outlet sealing plate 100. The arrangement of multiple mounting holes 114 can improve the reliability and stability of the connection between the outlet sealing plate 100 and other components of the regulating switch, and further improve the sealing effect of the sealing groove 112 and sealing strip.

[0040] Please refer to Figure 3 Multiple stationary contacts 120 are divided into multiple groups, and these groups of stationary contacts 120 are arranged at intervals along a preset direction 102. Each group of stationary contacts 120 includes a first contact 122 and a second contact 124 for connecting a low-voltage (less than or equal to 380V) coil. The portions of the first contact 122 and the second contact 124 located inside the sealing plate body 110 have different dimensions along the preset direction 102. This arrangement allows stationary contacts 120 of different sizes to be arranged alternately along the preset direction 102, thereby diversifying the dimensions of the stationary contacts 120 and enriching their arrangement, providing a basic support for the outgoing sealing plate 100 to switch between different wiring methods.

[0041] Furthermore, in this embodiment, each group of stationary contacts 120 includes three first contacts 122 and one second contact 124 arranged sequentially along a preset direction 102. The portion of the second contact 124 located inside the sealing plate body 110 has a larger dimension in the preset direction 102 than the portion of the first contact 122 located inside the sealing plate body 110. In other embodiments, the number of first contacts 122 and second contacts 124 in each group of stationary contacts 120 can also be other values, such as two first contacts 122 and two second contacts 124 each.

[0042] In addition to the first contact 122 and the second contact 124, each set of stationary contacts 120 also includes a third contact 126 for connecting the neutral wire. The purpose of providing the third contact 126 is to integrate the contact for connecting the neutral wire onto this outgoing line cover 100, which facilitates the subsequent connection of the regulating switch with electrical equipment (such as a transformer) and simplifies the wiring structure between the regulating switch and the transformer.

[0043] Furthermore, in this embodiment, in each group of stationary contacts 120, there are two third contacts 126, one of which is located between the first contact 122 and the second contact 124, and the other is located on the side of the first contact 122 away from the second contact 124. In other embodiments, there may be only one third contact 126, located between the first contact 122 and the second contact 124.

[0044] In this embodiment, the outgoing sealing plate 100 also includes a plurality of moving contacts 130 for connection with a plurality of stationary contacts 120. The plurality of moving contacts 130 are all slidably engaged with the sealing plate body 110 along a preset direction 102. By sliding relative to the plurality of stationary contacts 120, the plurality of moving contacts 130 can selectively connect to different parts of the plurality of stationary contacts 120, thereby allowing the connection mode of the plurality of moving contacts 130 and the plurality of stationary contacts 120 to be switched, so as to change the wiring mode of the outgoing sealing plate 100.

[0045] It should be emphasized that in this embodiment, the multiple moving contacts 130 and the multiple stationary contacts 120 located inside the sealing plate body 110 are directly connected without any other intermediate connections. This not only simplifies the connection relationship between the moving contacts 130 and the stationary contacts 120, but also reduces the resistance of the circuit where the moving contacts 130 and the stationary contacts 120 are located, thereby improving the electrical performance of the entire capacity adjustment switch.

[0046] In this embodiment, the preset direction 102 is the length direction of the sealing plate body 110, which facilitates wiring installation of the stationary contact 120 located on the outer side of the sealing plate body 110. In other embodiments, the preset direction 102 may also have a certain angle with the length direction of the sealing plate body 110.

[0047] In the existing technology, Y-type wiring and Z-type wiring are two common wiring methods.

[0048] Please refer to Figure 4 Y-type connection can be used for large-capacity transformers, with each phase consisting of two sections of coils operating in parallel. In phase a, switch K1 is open, and k2, k3, and k4 are closed. K2 connects to the low-voltage output line of phase a and the coil section a1-a2. K2 and K1 are short-circuited. K3 connects to the coil section a4-a3 and the n line. K4 connects to the coil section a1-a2 and the n line. K3 and K8 are short-circuited.

[0049] In phase b, switch K5 is open, and switches K6, K7 and K8 are closed. K6 is connected to the low-voltage output line of phase b and the coil section b1-b2. K6 and K5 are short-circuited. K7 is connected to the coil section b4-b3 and the n line. K8 is connected to the coil section b1-b2 and the n line. K7 and K12 are short-circuited.

[0050] In phase c, switch K9 is open, and switches K10, K11, and K12 are closed. K10 connects the low-voltage outgoing line of phase c and the coil section C1-C2. K10 and K9 are short-circuited. K11 connects the coil section C4-C3 and the n line. K12 connects the coil section C1-C2 and the n line.

[0051] Please refer to Figure 5 Z-type connection can be used for small-capacity transformers, with each phase consisting of two coil segments connected in series. When switch K1 is closed, k2, k3, and k4 are open. K1 connects the n-line and the a1-a2 coil segment. The a1-a2 coil segment is connected in series with the c3-c4 coil segment, and the c-phase output line is connected.

[0052] When switch K5 is closed, switches K6, K7, and K8 are open. K5 connects the n-line and the b1-b2 segment coil. The b1-b2 segment coil is connected in series with the a3-a4 segment coil, and the a-phase line is output.

[0053] When switch K9 is closed, K10, K11 and K12 are open. K9 connects the n line and the C1-C2 segment coil. The C1-C2 segment coil is connected in series with the B3-B4 segment coil, and the B phase is output.

[0054] Based on the above principle, to achieve the conversion between Y-type and Z-type wiring, each phase has 4 break points, and each break point requires at least 2 stationary contacts and 1 moving contact. The conventional approach requires a total of 24 stationary contacts and 12 moving contacts.

[0055] The cable outlet sealing plate 100 provided in this embodiment can effectively improve the above situation and simplify the conversion operation between Y-type and Z-type wiring. The specific principle is as follows:

[0056] Please refer to Figure 6 and Figure 7 In a Y-type connection, contact k1 is open, and contacts k2, k3, and k4 are closed. K2 connects to the coil and the output wire, k4 connects to the coil and the neutral (n) wire, and k3 connects to the coil and the n wire. K3 and k8 share a widened contact. Contact k5 is open, and contacts k6, k7, and k8 are closed. K6 connects to the coil and the output wire, k8 connects to the coil and the n wire, and k7 connects to the coil and the n wire. K7 and k12 share a widened contact. Contact k9 is open, and contacts k10, k11, and k12 are closed. K10 connects to the coil and the output wire, k12 connects to the coil and the n wire, and k11 connects to the coil and the n wire. The neutral (n) wire is short-circuited on the sealing plate and then led out, thus achieving the Y-type connection method.

[0057] Please refer to Figure 8 and Figure 9 In the Z-type wiring, k1, k5, and k9 are closed, while the other contacts are open. k1, k5, and k9 connect the n-wire and the coil to achieve the Z-type wiring method.

[0058] As can be seen from the above, the cable outlet sealing plate 100 provided in this embodiment, by improving the contact structure, only requires 21 stationary contacts and 9 moving contacts to realize the conversion between Y-type wiring and Z-type wiring, which is simple and convenient to operate.

[0059] In summary, the cable exiting plate 100 includes a plate body 110 and multiple stationary contacts 120. The multiple stationary contacts 120 are spaced apart on the plate body 110 along a preset direction 102. At least two stationary contacts 120 have different dimensions on the inner side of the plate body 110 in the preset direction 102, so that the dimensions of the multiple stationary contacts 120 on the inner side of the plate body 110 of the cable exiting plate 100 are diversified. That is, some of the multiple stationary contacts 120 are large and some are small. This facilitates different connection methods between the multiple stationary contacts 120 and the multiple moving contacts 130 when the multiple moving contacts 130 of the cable exiting plate 100 slide relative to the multiple stationary contacts 120. This allows the cable exiting plate 100 to easily switch between Y-type and Z-type wiring, effectively making up for the deficiencies of existing technical solutions.

[0060] Finally, it should be noted that the aforementioned outlet sealing plate 100 can be used not only for capacity-adjusting switches but also for other types of electrical switches.

[0061] This invention also provides a capacity adjustment switch, including the aforementioned outlet sealing plate 100, which allows for easy switching between the stationary contact 120 and the moving contact 130, thereby switching between different wiring methods, and features simple and convenient operation.

[0062] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable exit sealing plate, characterized in that, It includes a sealing plate body and multiple stationary contacts, wherein the multiple stationary contacts are spaced apart on the sealing plate body along a preset direction, and at least two of the stationary contacts have different dimensions in the preset direction at the inner side of the sealing plate body. The plurality of stationary contacts are divided into multiple groups. Each group of stationary contacts includes a first contact and a second contact for connecting the low-voltage coil. The dimensions of the first contact and the second contact located inside the sealing plate body in the preset direction are different. Each group of stationary contacts includes three first contacts and one second contact arranged sequentially along the preset direction. The dimension of the second contact located inside the sealing plate body in the preset direction is larger than the dimension of the first contact located inside the sealing plate body in the preset direction. Each group of stationary contacts also includes a third contact for connecting the neutral wire. In each group of stationary contacts, there are two third contacts, one located between the first contact and the second contact, and the other located on the side of the first contact away from the second contact. The outgoing sealing plate also includes a plurality of moving contacts for connecting with the plurality of stationary contacts. The plurality of moving contacts are slidably fitted onto the sealing plate body along the preset direction so that the connection mode of the plurality of moving contacts and the plurality of stationary contacts can be switched. Counting from left to right, the first and fifth stationary contacts in any group are the third contacts, the second to fourth are the first contacts, and the sixth is the second contact. The outgoing sealing plate has a Y-type wiring method and a Z-type wiring method. In the Y-type wiring method, the second and third stationary contacts in the same group from left to right are connected through the moving contact. In the Z-type wiring method, the third and fourth stationary contacts in the same group from left to right are connected through the moving contact.

2. The cable exit sealing plate according to claim 1, characterized in that, The preset direction is the length direction of the sealing plate body.

3. The cable exit sealing plate according to claim 1, characterized in that, The sealing plate body is provided with a protruding structure to enhance its structural strength.

4. The cable exit sealing plate according to claim 1, characterized in that, The sealing plate body is provided with a sealing groove for installing a sealing strip and mounting holes for installing a cable outlet sealing plate. The sealing groove extends along the edge of the sealing plate body, and a plurality of mounting holes are arranged at intervals along the extension direction of the sealing groove.

5. A capacity-adjusting switch, characterized in that, Includes the cable exit sealing plate as described in any one of claims 1-4.

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