Wiring structure and high-voltage test transformer
By designing the wiring structure of the conductive ball and the conductive plug in the high-voltage test transformer, wiring is achieved by using the contact between the conductive screw and the conductive ball, the convenience and safety are improved, and the problems of poor sealing and oil leakage are solved.
Patent Information
- Application Number
- CN202420687396.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-03
AI Technical Summary
When connecting and disassembling the conductors, the high-voltage test transformer can easily cause the terminals to rotate coaxially with the end cap, resulting in poor sealing, insulating oil seeping, affecting the insulation performance and safety of the equipment.
A wiring structure is designed, including a conductive ball, an insulating cover and a conductive plug. The wiring is achieved through the contact between the conductive screw and the conductive ball. The conductive screw is twisted with a tool to achieve a conduction or disconnection state, avoiding frequent tightening of the end. Cap requirements ensure sealing.
It improves the convenience and safety of wiring, avoids oil seepage, and enhances insulation performance and equipment safety.
Smart Images
Figure CN222213901U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of test transformers, in particular to a wiring structure and a high-voltage test transformer. Background Art
[0002] High voltage test transformer is the basic test equipment for AC withstand voltage test. It is usually used to conduct insulation strength test on various electrical products, electrical components, insulating materials, etc. under specified voltage to assess the insulation level of the product.
[0003] In the related art, when the high-voltage test transformer is in use, the transformer needs to be connected to the operating box with a wire, usually by inserting the power strip into the terminal 2002, and then tightening and fixing the terminal cap 2005 on the terminal 2002 to achieve the purpose of connection (see the attached figure of the specification). Figure 5 ).
[0004] Although this connection method is relatively simple and convenient, the inside of the transformer is filled with insulating oil, and the low-voltage side wiring bushing 2001 leads to the terminal 2002, which is sealed by tightening the nut 2003 and crimping the sealing gasket 2004. When connecting and removing the wires, the end cap 2005 on the terminal 2002 is frequently rotated, and it is easy for the terminal 2002 and the end cap 2005 to rotate coaxially, resulting in poor sealing of the bushing 2001 and oil leakage. In severe cases, the insulating oil will become damp and the insulation performance will be reduced, thereby affecting the safety of the equipment. Utility Model Content
[0005] The main purpose of the utility model is to provide a wiring structure, aiming to improve the convenience of high-voltage test transformer wiring.
[0006] To achieve the above object, the utility model provides a wiring structure for a high-voltage test transformer, wherein the wiring structure includes a wiring terminal, the wiring terminal includes a bushing and a terminal post, the terminal post is arranged on the bushing, and is characterized in that the wiring structure also includes:
[0007] A conductive ball, the conductive ball is sleeved on the terminal;
[0008] an insulating cover, the insulating cover is provided with a receiving groove capable of receiving the wiring terminal and a mounting hole communicated with the receiving groove, and is sleeved on the wiring terminal; and
[0009] A conductive connector includes a conductive screw, which is threadedly connected to the mounting hole and can extend into the receiving groove to contact the conductive ball. A clamping groove is provided at one end of the conductive screw away from the receiving groove.
[0010] Optionally, the conductive connector includes a conductive rod, a partial structure of which is arranged in the mounting hole and is located between the conductive screw and the receiving groove, and a conductive contact is provided at one end of the conductive rod away from the conductive screw; a limiting ring is formed on the peripheral wall of the mounting hole close to one end of the receiving groove, a partial structure of the conductive rod is movably passed through the limiting ring, the conductive contact is located in the receiving groove and abuts against the limiting ring, and the conductive rod is elastically connected to the limiting ring.
[0011] Optionally, the conductive connector further comprises an elastic member, a limiting protrusion is provided at one end of the conductive rod away from the conductive contact, and the elastic member is sleeved on the conductive rod and located between the limiting protrusion and the limiting ring.
[0012] Optionally, one end of the conductive contact away from the conductive rod is arranged in an arc shape.
[0013] Optionally, the conductive connector further comprises a conductive tube, the conductive tube is arranged in the mounting hole, the conductive screw is passed through the conductive tube and is threadedly connected to the conductive tube; a partial structure of the conductive rod is accommodated in the conductive tube.
[0014] Optionally, the conductive ball is threadably connected to the terminal post.
[0015] Optionally, the cross-sectional area of the groove gradually decreases from the notch close to the groove to the notch far away from the groove.
[0016] Optionally, the insulating cover includes a first cover body and a second cover body that are detachably connected, and the first cover body and the second cover body enclose the receiving groove and the mounting hole.
[0017] Optionally, the wiring structure further includes a locking piece, the first cover body is provided with a connecting block, the connecting block is provided with a connecting hole, and the locking piece is passed through the connecting hole to set the insulating cover on the high-voltage test transformer.
[0018] The utility model also provides a high-voltage test transformer, which includes a transformer body and a wiring structure described in any one of the above embodiments, wherein a plurality of wiring structures are provided, and the plurality of wiring structures are spaced apart from each other on the transformer body.
[0019] In the technical solution of the utility model, when wiring is required, a tool is inserted into the mounting hole and inserted into the slot to twist the conductive screw so that the conductive screw moves close to the conductive ball. When the conductive screw contacts the conductive ball, the conductive screw and the terminal are in a conducting state. The terminal of the wire is inserted into the mounting hole and contacts the conductive screw to achieve wiring. When wiring is not required, a tool is inserted into the mounting hole and inserted into the slot to twist the conductive screw so that the conductive screw moves away from the conductive ball. When the conductive screw does not contact the conductive ball, the conductive screw and the terminal are in a disconnected state. The utility model adopts this wiring structure. When wiring, after the conductive screw is twisted to contact the conductive ball, the wire can be directly inserted into the mounting hole, thereby improving the convenience of wiring, avoiding undesirable conditions such as oil leakage, and improving the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0021] Figure 1 This is a schematic diagram of an exploded structure of an embodiment of a wiring structure provided by the utility model;
[0022] Figure 2 for Figure 1 An enlarged schematic diagram of the local A in the middle;
[0023] Figure 3 A cross-sectional view of an embodiment of a wiring structure provided by the utility model;
[0024] Figure 4 for Figure 3 An enlarged schematic diagram of the local B in the middle;
[0025] Figure 5 It is a structural schematic diagram of an existing wiring terminal;
[0026] Figure 6 The utility model is a schematic diagram of the structure of the improved wiring terminal.
[0027] Description of Figure Numbers:
[0028]
[0029]
[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0033] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0034] Please refer to Figures 1 to 6 The utility model proposes a wiring structure 1000 for a high-voltage test transformer, wherein the wiring structure 1000 includes a wiring terminal 2000, wherein the wiring terminal 2000 includes a sleeve 2001 and a terminal 2002, wherein the terminal 2002 is arranged on the sleeve 2001, and the wiring structure 1000 also includes a conductive ball 1, an insulating cover 2 and a conductive plug-in component 3, wherein the conductive ball 1 is sleeved on the terminal 2002; the insulating cover 2 is provided with a receiving groove 21 capable of accommodating the wiring terminal 2000 and a mounting hole 22 connected to the receiving groove 21, and is sleeved on the wiring terminal 2000; the conductive plug-in component 3 includes a conductive screw 31, wherein the conductive screw 31 is threadedly connected to the mounting hole 22, and can extend into the receiving groove 21 to contact the conductive ball 1, and a clamping groove 311 is provided at one end of the conductive screw 31 away from the receiving groove 21.
[0035] In the technical solution of the utility model, when wiring is required, a tool is inserted into the mounting hole 22 and inserted into the slot 311 to twist the conductive screw 31 so that the conductive screw 31 moves close to the conductive ball 1. When the conductive screw 31 contacts the conductive ball 1, the conductive screw 31 and the terminal 2002 are in a conducting state. The terminal of the wire is inserted into the mounting hole 22 and contacts the conductive screw 31 to achieve wiring. When wiring is not required, a tool is inserted into the mounting hole 22 and The conductive screw 31 is inserted into the card slot 311 to be twisted so as to move the conductive screw 31 away from the conductive ball 1. When the conductive screw 31 is not in contact with the conductive ball 1, the conductive screw 31 and the terminal 2002 are in a disconnected state. The utility model adopts this wiring structure 1000. When the conductive screw 31 is twisted to contact the conductive ball 1 during wiring, the wire can be directly inserted into the mounting hole 22, thereby improving the convenience of wiring, avoiding adverse conditions such as oil leakage, and improving the safety of operation.
[0036] In this embodiment, the wire is usually a DCC power test wire, and the side wall of its terminal is provided with an arc-shaped spring piece. When the wire is connected to the mounting hole 22, the arc-shaped spring piece abuts against the hole wall of the mounting hole 22 so that the terminal of the wire can be stably connected; the slot 311 can be a flat groove or a cross groove. The utility model does not limit this. A flat screwdriver or a cross screwdriver can be inserted into the slot 311 to twist the conductive screw 31 to move closer to or away from the conductive ball 1.
[0037] For further information, see Figures 1 to 4In one embodiment of the utility model, the conductive connector 3 includes a conductive rod 32, a portion of the conductive rod 32 is arranged in the mounting hole 22 and is located between the conductive screw 31 and the receiving groove 21, and a conductive contact 321 is provided at one end of the conductive rod 32 away from the conductive screw 31; a limiting ring 23 is formed on the peripheral wall of the mounting hole 22 close to one end of the receiving groove 21, a portion of the conductive rod 32 is movably inserted into the limiting ring 23, the conductive contact 321 is located in the receiving groove 21 and abuts against the limiting ring 23, and the conductive rod 32 is elastically connected to the limiting ring 23. When wiring is required, a tool is inserted into the mounting hole 22 and inserted into the slot 311 to twist the conductive screw 31, so that the conductive screw 31 moves close to the conductive ball 1, and drives the conductive rod 32 to move close to the conductive ball 1. When the conductive contact 321 contacts the conductive ball 1, the conductive screw 31, the conductive rod 32 and the terminal 2002 are all in a conducting state. The terminal of the wire is inserted into the mounting hole 22 and connected with the conductive screw. When wiring is not needed, a tool is inserted into the mounting hole 22 and inserted into the slot 311 to screw the conductive screw 31, so that the conductive screw 31 moves away from the conductive ball 1. When the conductive screw 31 moves to a certain distance, the conductive rod 32 moves away from the conductive ball 1 under the action of the elastic restoring force, so that the conductive contact 321 does not contact the conductive ball 1. At this time, the conductive contact 321 and the terminal 2002 are in a disconnected state.
[0038] Specifically, see Figures 1 to 4 In one embodiment of the utility model, the conductive connector 3 also includes an elastic member 33, and a limiting protrusion 322 is provided at one end of the conductive rod 32 away from the conductive contact 321. The elastic member 33 is sleeved on the conductive rod 32 and is located between the limiting protrusion 322 and the limiting ring 23. When wiring is required, the conductive screw 31 is controlled to move close to the conductive ball 1, and the conductive screw 31 pushes the conductive rod 32 to move close to the conductive ball 1. At this time, the elastic member 33 is compressed. When the conductive contact 321 contacts the conductive ball 1, the conductive screw 31, the conductive rod 32 and the terminal 2002 are all in a conductive state and wiring can be made; when wiring is not required, the conductive screw 31 is controlled to move away from the conductive ball 1, the elastic member 33 rebounds, and the conductive rod 32 moves away from the conductive ball 1 under the action of the elastic restoring force of the elastic member 33, so that the conductive contact 321 does not contact the conductive ball 1, and the conductive contact 321 and the terminal 2002 are in a disconnected state.
[0039] To facilitate the contact between the conductive contact 321 and the conductive ball 1, please refer to Figure 4 In one embodiment of the utility model, the end of the conductive contact 321 away from the conductive rod 32 is arranged in an arc shape. By designing the conductive contact 321 in an arc shape, the surface area in contact with the conductive ball 1 can be increased, and the contact reliability and conductive performance can be improved. The arc design can better adapt to the shape of the conductive ball 1, making the contact closer and more stable, and reducing electrical connection problems caused by poor contact.
[0040] For further information, see Figures 1 to 4 In one embodiment of the utility model, the conductive connector 3 further includes a conductive tube 34, which is disposed in the mounting hole 22, and the conductive screw 31 is passed through the conductive tube 34 and is threadedly connected with the conductive tube 34; a part of the structure of the conductive rod 32 is accommodated in the conductive tube 34. The length of the conductive tube 34 is adapted to the length setting of the mounting hole 22, and is fixed in the mounting hole 22. The conductive screw 31 and a part of the structure of the conductive rod 32 can be accommodated in the conductive tube 34. The conductive tube 34 can provide a certain degree of protection to protect the wire or conductor from the influence of the external environment. The conductive tube 34 can also help fix the position of the wire to make it more neat and orderly.
[0041] In order to improve the connection stability between the conductive ball 1 and the terminal 2002, in one embodiment of the utility model, the conductive ball 1 is threadedly connected to the terminal 2002. The conductive ball 1 is provided with a through hole, and the peripheral wall of the through hole is provided with a threaded structure adapted to the terminal 2002. The threaded connection can provide reliable electrical contact, ensuring a stable connection between the conductive ball 1 and the terminal 2002, which helps to reduce contact resistance, improve conductivity, and ensure the stability and reliability of circuit transmission; the threaded connection can be easily installed and disassembled. Through the threaded connection, the conductive ball 1 can be easily fixed on the terminal 2002, and can be easily disassembled and replaced, which can reduce the time and energy consumption when maintaining and replacing parts; furthermore, the threaded connection can also provide strong mechanical support and fixation, ensuring that the conductive ball 1 will not loosen or fall off during the connection process, which helps to increase the stability and durability of the connection.
[0042] To facilitate the installation of the insulating cover 2 on the wiring terminal 2000, please refer to Figure 3In one embodiment of the utility model, the cross-sectional area of the groove 21 gradually decreases from the notch close to the groove 21 to the notch far from the groove 21. Generally speaking, the cross-sectional area of the terminal 2000 gradually decreases from close to the high-voltage test transformer to far from the high-voltage test transformer. Therefore, in order to adapt to the terminal 2000, it is also convenient to directly cover the insulating cover 2 on the terminal 2000, and the groove 21 is adapted to the terminal 2000, which is also convenient to provide a certain positioning effect for the insulating cover 2 when installing it.
[0043] Optionally, see Figure 1 In one embodiment of the utility model, the insulating cover 2 includes a first cover body 24 and a second cover body 25 that are detachably connected, and the first cover body 24 and the second cover body 25 enclose the receiving groove 21 and the mounting hole 22. The detachable connection can be fixed by bolts and nuts, or by buckles and slots 311, and the utility model does not limit this; when installing the insulating cover 2, the first cover body 24 can be first adapted to the wiring terminal 2000 and fixed, and then the second cover body 25 can be installed. The first cover body 24 and the second cover body 25 can better accommodate the wiring terminal 2000 in the receiving groove 21, and can facilitate its maintenance and repair.
[0044] For further information, see Figure 1 In one embodiment of the utility model, the wiring structure 1000 further includes a locking member 4, the first cover body 24 is provided with a connection block 241, the connection block 241 is provided with a connection hole 242, and the locking member 4 is passed through the connection hole 242 to set the insulating cover 2 on the high-voltage test transformer. The locking member 4 can be a screw, a bolt, or a nut, and the utility model does not limit this; fixing the insulating cover 2 can effectively isolate the wires and other metal parts, reduce the risk of accidental electric shock and short circuit, and thus improve the safety of users and equipment; externally fixing the insulating cover 2 can prevent others from misoperating or accidentally touching the wires, and reduce the probability of equipment failure and accidents.
[0045] The utility model also proposes a high-voltage test transformer, which includes a transformer body and a wiring structure 1000. The specific structure of the wiring structure 1000 refers to the above embodiment. Since the high-voltage test transformer adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.
[0046] The high-voltage test transformer includes a transformer body and the wiring structure 1000 described in any of the above embodiments, and a plurality of the wiring structures 1000 are provided, and the plurality of the wiring structures 1000 are arranged at intervals on the transformer body. When wiring, the staff can use the wiring structure 1000 to improve the convenience of wiring, and can also avoid adverse conditions such as oil leakage, thereby improving the safety of operation.
[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A wiring structure for a high voltage test transformer, the wiring structure comprising a wiring terminal, the wiring terminal comprising a bushing and a terminal post, the terminal post being arranged on the bushing, characterized in that: The wiring structure also includes: A conductive ball, the conductive ball is sleeved on the terminal; an insulating cover, the insulating cover is provided with a receiving groove capable of receiving the wiring terminal and a mounting hole communicated with the receiving groove, and is sleeved on the wiring terminal; and A conductive connector includes a conductive screw, which is threadedly connected to the mounting hole and can extend into the receiving groove to contact the conductive ball. A clamping groove is provided at one end of the conductive screw away from the receiving groove.
2. The wiring structure according to claim 1, characterized in that: The conductive connector includes a conductive rod, a portion of which is arranged in the mounting hole and between the conductive screw and the receiving groove, and a conductive contact is provided at one end of the conductive rod away from the conductive screw; a limiting ring is formed on the peripheral wall of the mounting hole close to one end of the receiving groove, a portion of which is movably inserted into the limiting ring, the conductive contact is located in the receiving groove and abuts against the limiting ring, and the conductive rod is elastically connected to the limiting ring.
3. The wiring structure according to claim 2, characterized in that: The conductive connector also includes an elastic member. A limiting protrusion is provided at one end of the conductive rod away from the conductive contact. The elastic member is sleeved on the conductive rod and located between the limiting protrusion and the limiting ring.
4. The wiring structure according to claim 2, characterized in that: The end of the conductive contact away from the conductive rod is arranged in an arc shape.
5. The wiring structure according to claim 2, characterized in that: The conductive connector also includes a conductive tube, which is arranged in the mounting hole. The conductive screw passes through the conductive tube and is threadedly connected to the conductive tube. Part of the structure of the conductive rod is accommodated in the conductive tube.
6. The wiring structure according to any one of claims 1 to 5, characterized in that: The conductive ball is threadably connected to the terminal post.
7. The wiring structure according to any one of claims 1 to 5, characterized in that: The cross-sectional area of the groove gradually decreases from the notch close to the groove to the notch far away from the groove.
8. The wiring structure according to any one of claims 1 to 5, characterized in that: The insulating cover comprises a first cover body and a second cover body which are detachably connected, and the first cover body and the second cover body enclose the receiving groove and the mounting hole.
9. The wiring structure according to claim 8, characterized in that: The wiring structure also includes a locking piece. The first cover body is provided with a connecting block. The connecting block is provided with a connecting hole. The locking piece is passed through the connecting hole to set the insulating cover on the high-voltage test transformer.
10. A high voltage test transformer, characterized in that: include: Transformer body; According to any one of claims 1 to 9, there are multiple wiring structures, and the multiple wiring structures are arranged at intervals on the transformer body.