CN218386060U - Plug for voltage transformer and voltage transformer - Google Patents

Abstract

The utility model belongs to the technical field of voltage transformer, especially, relate to a plug and voltage transformer for voltage transformer. The plug includes an outer sleeve, a conductive cable, and a fuse assembly. The outer sleeve comprises an inserting sleeve section and a cable sleeve section vertically extending out of the peripheral wall of the inserting sleeve section; the conductive cable comprises a cable body and a circular ring terminal connected to one end of the cable body; the fuse wire assembly is detachably inserted into the cylinder cavity of the insertion sleeve section and comprises a fuse wire body. The fuse assembly is inserted into the cylinder cavity of the sleeve section of the cable, the annular terminal is located in the cylinder cavity of the sleeve section of the plug-in type, the fuse body penetrates through the annular terminal at the inner axial end in the state that the fuse assembly is plugged into the sleeve section of the plug-in type, and the outer axial end of the fuse body is connected with the annular terminal. The utility model discloses in, can change the fuse body, easy dismounting under the condition of whole plug is dismantled to the unnecessary.

Description

Plug for voltage transformer and voltage transformer

Technical Field

The utility model belongs to the technical field of voltage transformer, especially, relate to a plug and voltage transformer for voltage transformer.

Background

Distribution network automation is an important link of smart power grid construction, under the distribution network automation, more and more units of voltage need to be measured and protected, and the voltage transformer cabinet is used as equipment which can not only provide voltage measurement, but also can provide power supply for other electrical equipment, and the application of the voltage transformer cabinet is increasingly wide.

The elbow plug used in the conventional voltage transformer is used for connecting a switch-related terminal base and a transformer-related terminal base, and a fuse wire is provided in the elbow plug to protect an electric element.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that prior art provided, the utility model provides a plug and voltage transformer for voltage transformer can change the fuse under the condition of whole plug is dismantled to the unnecessary.

The utility model discloses a first aspect provides a plug for voltage transformer, and this plug includes:

the outer sleeve comprises an inserting sleeve section and a cable sleeve section vertically extending out of the peripheral wall of the inserting sleeve section;

the conductive cable comprises a cable body and a circular ring terminal connected to one end of the cable body; and

the fuse wire assembly is detachably inserted into the cylinder cavity of the insertion sleeve section and comprises a fuse wire body;

the fuse assembly is inserted into the cylinder cavity of the sleeve section of the cable, the annular terminal is located in the cylinder cavity of the sleeve section of the plug-in type, the fuse body penetrates through the annular terminal at the inner axial end in the state that the fuse assembly is plugged into the sleeve section of the plug-in type, and the outer axial end of the fuse body is connected with the annular terminal.

Optionally, the fuse assembly further comprises a plug detachably connected to the axially outer end of the socket sleeve section.

Optionally, a circumferential wall of the axial outer end of the fuse body is provided with a crimping ring protrusion, and the crimping ring protrusion abuts against the ring terminal in a state where the fuse assembly is plugged into the plugging sleeve section.

Optionally, the fuse wire assembly further comprises a pressing block connecting piece, the two axial ends of the pressing block connecting piece are detachably connected with the outer axial end of the fuse wire body and the plug respectively, and the inner axial end of the pressing block connecting piece abuts against the annular terminal in the state that the fuse wire assembly is inserted into the inserting sleeve section in an inserting mode.

Optionally, the axial two ends of the press block connecting piece are respectively in threaded connection with the axial outer end of the fuse body and the plug.

Optionally, the plug further comprises a protective cap removably covering the axial outer end of the socket sleeve section.

The utility model discloses the second aspect provides a voltage transformer, this voltage transformer include foretell plug and the casing that is used for voltage transformer, and it has the inner tube seat to stretch out outwards on the casing, and the outer cover of the axial inner of grafting cover section is on the inner tube seat, the axial outer end lateral wall of the interior tube seat of ring terminal butt.

Optionally, be equipped with spacing annular on the periphery wall of inner cylinder seat, be equipped with the spacing ring that imbeds in spacing annular on the internal perisporium of plug-in connection cover barrel section protrudingly.

Optionally, the plug further comprises a protective cap, and the protective cap can be detachably covered on the axial outer end of the plug-in sleeve section; the voltage transformer further comprises a locking mechanism for axially crimping the protective cap.

Optionally, the locking mechanism comprises:

the connecting lug plates are arranged on two radial sides of the inserting sleeve section and axially extend out of the shell;

the draw hooks are arranged on two radial sides of the inserting sleeve section, two axial ends of each draw hook are respectively a threaded end and a hooked end, and the hooked ends are connected with the connecting lug plates;

the outer edge of the pressure plate is movably sleeved on the threaded end; and

the fastening nut is in threaded connection with the threaded end and is positioned above the pressure plate;

wherein the fastening nut is axially movable to drive the platen into crimping the cap.

The utility model discloses in, the outer sleeve is used for the plug-in components, and wherein the fuse subassembly cartridge is in the socket sleeve section of pegging graft, and electrically conductive cable cartridge links to each other with the fuse body in cable sleeve section and through the ring terminal. Particularly, through set up structure and part in the fuse subassembly to realize respectively with grafting cover barrel section and electrically conductive cable detachable connection, so, under the condition that the fuse body damages, can directly extract the fuse subassembly along the axial for fuse subassembly and outer sleeve break away from being connected, thereby change the fuse body, convenient and fast.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a voltage transformer according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an exploded view of the voltage transformer of FIG. 1;

fig. 4 is a schematic diagram of a voltage transformer according to another embodiment of the present invention;

FIG. 5 is a partial enlarged view of FIG. 4 at B;

FIG. 6 is an exploded view of the voltage transformer of FIG. 4;

fig. 7 is a partial schematic view of a voltage transformer according to another embodiment of the present invention.

Reference numerals

10. An outer sleeve; 11. inserting sleeve sections; 111. the limiting ring is convex; 12. a cable sleeve segment;

20. a conductive cable; 21. a cable body; 22. a ring terminal;

30. a fuse assembly; 31. a fuse body; 311. the compression joint ring is convex; 32. blocking; 33. a briquetting connecting piece;

40. a protective cap;

50. a housing; 51. an inner cylinder seat; 511. a limiting ring groove;

60. a locking mechanism; 61. connecting the ear plates; 62. pulling a hook; 63. pressing a plate; 64. and (5) tightening the nut.

Detailed Description

In order to make the aforementioned and other features and advantages of the invention more apparent, the invention is further described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, the present invention provides, in a first aspect, a plug for a voltage transformer, which includes an outer sleeve 10, a conductive cable 20, and a fuse assembly 30. The outer sleeve 10 comprises a plug sleeve segment 11 and a cable sleeve segment 12 which projects perpendicularly from the circumferential wall of the plug sleeve segment 11. The conductive cable 20 includes a cable body 21 and a ring terminal 22 connected to one end of the cable body 21. The fuse assembly 30 is detachably plugged into the cylinder cavity of the plugging sleeve segment 11 and comprises a fuse body 31.

The conductive cable 20 is inserted into the cylindrical cavity of the cable sleeve section 12, the ring terminal 22 is located in the cylindrical cavity of the plug sleeve section 11, when the fuse assembly 30 is plugged into the plug sleeve section 11, the axial inner end of the fuse body 31 passes through the ring terminal 22, and the axial outer end of the fuse body 31 is connected with the ring terminal 22.

In particular, the conductive cable 20 is electrically connected to the internal electrical elements of the voltage transformer through the fuse body 31, in particular through the axially outer end of the fuse body 31 and the annular ring terminal 22 to achieve the connection. The utility model provides an in the plug, through set up structure and part in fuse subassembly 30 to the realization can be dismantled with grafting cover barrel section 11 and electrically conductive cable 20 respectively and be connected, so, under the condition that fuse body 31 damaged, can directly extract fuse subassembly 30 along the axial, thereby change fuse body 31.

Therefore, in the plug provided by the utility model, when fuse body 31 needs to be changed, fuse body 31 can be changed by only disconnecting fuse assembly 30 from outer sleeve 10, which is convenient to disassemble and assemble.

It should be noted that, in the illustrated embodiment, the outer sleeve 10 is T-shaped, but may be other shapes, and is not limited in particular.

It will be understood by those skilled in the art that the ring terminal 22 is an existing component, and the center thereof is provided with a through hole, so that the outer diameter of the axially inner end of the fuse body 31 is smaller than the inner diameter of the ring terminal 22 to achieve penetration.

Further, the fuse assembly 30 also comprises a plug 32, which plug 32 is detachably connected to the axially outer end of the plug sleeve section 11.

In particular, the fuse assembly 30 is detachably connected to the plug sleeve section 11 via a plug 32. In the present embodiment, in order to facilitate replacement of the fuse body 31, the fuse body 31 is detachably connected to the plug 32.

In the illustrated embodiment, the axial outer end of the fuse body 31 is provided with an external thread, the plug 32 is provided with a threaded hole at a position corresponding to the plug 32, and the fuse body 31 is in threaded connection with the plug 32 to realize detachable connection. It is to be understood that the structure of the fuse body 31 detachably connected to the plug 32 is not limited to the illustrated embodiment, and may include, for example, a snap connection or the like.

In the illustrated embodiment, the bore diameter of the axially outer end of the plug-in sleeve segment 11 decreases in the outward-inward direction, and accordingly the plug 32 engages in the axially outer end of the plug-in sleeve segment 11, in particular forming an interference fit. It will be appreciated that the arrangement of the plug 32 for releasable connection to the axially outer end of the spigot sleeve segment 11 is not limited to the illustrated embodiment and may include a threaded connection or the like.

As shown in fig. 1 to 3, in an alternative embodiment, a circumferential wall of the axially outer end of the fuse body 31 is provided with a crimp ring protrusion 311, and in a state where the fuse assembly 30 is plugged to the plugging sleeve segment 11, the crimp ring protrusion 311 abuts against the ring terminal 22.

As mentioned earlier, the diameter of the axial inner end of fuse body 31 is less than the internal diameter of ring terminal 22, links to each other with ring terminal 22 in order to realize fuse body 31 the utility model discloses in, set up the protruding 311 of crimping ring in order to realize linking to each other with ring terminal 22 through the axial outer end at fuse body 31. It will be appreciated that to achieve abutment of the crimp ring projections 311 against the ring terminal 22, the maximum diameter of the crimp ring projections 311 is greater than the inner diameter of the ring terminal 22.

In another alternative embodiment, as shown in fig. 4 to 6, the fuse assembly 30 further includes a press block connector 33, both axial ends of the press block connector 33 are detachably connected to the outer axial end of the fuse body 31 and the plug 32, respectively, and in a state where the fuse assembly 30 is plugged into the plugging sleeve segment 11, the inner axial end of the press block connector 33 abuts against the annular terminal 22.

Specifically, in this embodiment, the electrical connection of the fuse body 31 and the ring terminal 22 is achieved by adding the weight connection 33 to the fuse assembly 30, in other words, the axially outer end of the fuse body 31 is indirectly connected to the ring terminal 22 through the weight connection 33. It will be appreciated that to achieve abutment of the crimp connector 33 against the ring terminal 22, the outer diameter of the crimp connector 33 is greater than the inner diameter of the ring terminal 22. Therefore, in this embodiment, the maximum diameter of the fuse body 31 may be smaller than the inner diameter of the ring terminal 22, and the connection is achieved by the press-piece connection 33.

It will be appreciated that in this embodiment the compact connector 33 has an electrically conductive function and therefore it is preferred to use a conductive metal compact.

In the present embodiment, it is preferable that both axial ends of the pressure piece connecting member 33 are screwed with the axially outer end of the fuse body 31 and the plug 32, respectively, so as to achieve the detachable connection. Of course, the connection manner of the pressure block connection member 33, the fuse body 31 and the plug 32 is not limited to this, and may include, for example, a snap connection.

In the embodiment of the present invention, the plug further includes a protective cap 40, and the protective cap 40 can be detachably covered on the axial outer end of the socket sleeve 11.

In particular, the axially outer end of the plug-in sleeve segment 11 is covered by a protective cap 40, so that sealing of the axially outer end opening of the plug-in sleeve segment 11 and prevention of the plug 32 falling out is achieved. It should be noted that the protective cap 40 is preferably a rubber protective cap, which has a certain deformation capability, can be sleeved on the axial outer end of the plugging sleeve segment 11 and form an interference fit, and can be detached from the axial outer end of the plugging sleeve segment 11.

It is understood that, in the case where the protective cap 40 is provided, when the fuse body 31 needs to be replaced, the fuse assembly 30 needs to be pulled out after the protective cap 40 is detached.

The utility model discloses the second aspect still provides a voltage transformer, and this voltage transformer includes foretell plug and casing 50, and it has inner cylinder seat 51 to stretch out on the casing 50 outwards, and the outer cover of the axial inner of grafting cover section 11 is on inner cylinder seat 51, and the axial outer end lateral wall of cylinder seat 51 in the ring terminal 22 butt.

Since the voltage transformer is provided with the plug, all beneficial effects brought by the plug are obviously achieved, and repeated description is omitted here.

After the plug is mounted on the inner cylindrical holder 51, the ring terminal 22 abuts against the axially outer end side wall of the inner cylindrical holder 51. In an alternative embodiment, the circumferential wall of the axially outer end of the fuse body 31 is provided with a crimp ring projection 311, and the ring terminal 22 is sandwiched between the crimp ring projection 311 and the axially outer end of the inner cylinder holder 51. As described above, in order to crimp the crimp ring protrusion 311 to the ring terminal 22, the maximum diameter of the crimp ring protrusion 311 is larger than the inner diameter of the ring terminal 22.

In another alternative embodiment, fuse assembly 30 further includes a press block connector 33, and annular ring terminal 22 is sandwiched between press block connector 33 and the axially outer end of inner barrel seat 51. As described above, in order to press-fit the press piece connecting member 33 to the ring terminal 22, the diameter of the press piece connecting member 33 is larger than the inner diameter of the ring terminal 22.

In the above two embodiments, the inner diameter of the ring terminal 22 is larger than the diameter of the axially inner end of the fuse body 31 and smaller than the outer diameter of the axially outer end of the inner cylindrical seat 51; the outer diameter of the ring terminal 22 is greater than the inner diameter of the axial outer end of the inner barrel seat 51, so that the ring terminal 22 can be prevented from being sleeved on the axial outer end of the inner barrel seat 51 or entering the inner barrel seat 51, the fuse body 31 can penetrate through the ring terminal, and meanwhile, the ring terminal can be limited by the axial outer end side wall of the inner barrel seat 51.

Furthermore, a limiting ring groove 511 is arranged on the outer peripheral wall of the inner cylinder seat 51, and a limiting ring protrusion 111 embedded in the limiting ring groove 511 is arranged on the inner peripheral wall of the inserting sleeve section 11.

Specifically, after the plug is plugged into the inner barrel seat 51, the limiting ring groove 511 and the limiting ring protrusion 111 cooperate to determine whether the plug is installed in place.

As shown in fig. 7, in the embodiment of the present invention, the plug further includes a cap 40, and the cap 40 detachably covers the axial outer end of the socket sleeve section 11; the voltage transformer further comprises a locking mechanism 60 for axially crimping the protective cap 40.

Specifically, in this embodiment, the locking mechanism 60 is used to axially press the cap 40 to exert an axial force on the plug to strengthen the connection of the plug to the inner barrel mount 51.

Further, the locking mechanism 60 includes a connecting lug 61, a hook 62, a pressing plate 63, and a fastening nut 64. The connection lugs 61 are arranged on both radial sides of the plug-in sleeve segment 11 and project axially from the housing 50. The draw hooks 62 are arranged on two radial sides of the insertion sleeve segment 11, and two axial ends of the draw hooks are respectively a threaded end and a hook end, and the hook ends are connected with the connection lug plate 61. The outer edge of the pressure plate 63 is movably sleeved on the threaded end. A fastening nut 64 is threaded onto the threaded end and is positioned above the pressure plate 63. Wherein the tightening nut 64 is axially movable to drive the pressure plate 63 into pressure contact with the cap 40.

Specifically, thereby fastening nut 64 can drive pressure disk 63 along axial displacement at the thread end along axial reciprocating motion, thereby can adjust pressure disk 63 position crimping helmet 40 so, so exert axial force to whole plug, reduce the plug and break away from the risk. In the installation process, the hook end of the draw hook 62 is connected with the connecting lug plate 61, the pressure plate 63 is sleeved on the threaded end, and the fastening nut 64 is installed on the threaded end.

In the illustrated embodiment, the locking mechanism 60 has two connecting ear plates 61 and two pulling hooks 62 arranged in a radial symmetry, and the number of the connecting ear plates 61 and the number of the pulling hooks 62 can be adjusted as required.

It is to be understood that the locking mechanism 60 is not limited to the illustrated embodiment, and the locking mechanism 60 may also be a plurality of tension springs arranged at intervals along the circumference of the socket sleeve segment 11 and engaged with the pressure plate 63, and the pre-pressure in the axial direction is provided by the tension springs, which is not illustrated here.

It should be noted that, in the process of first installing the plug, the conductive cable 20 is inserted into the cable sleeve section 12, and is connected to the inner cylinder base 51 after being coated with silicone grease in the plug sleeve section 11, so as to improve the connection stability between the plug and the inner cylinder base 51, and then the fuse wire assembly 30 is inserted into the plug sleeve section 11, and is fixed by the locking mechanism 60 after being covered with the protective cap 40.

In the above-described embodiment, the "inner end" and the "outer end" of each member are determined based on the position of the housing 50, and the inner end is close to the housing 50 and the outer end is far from the housing 50.

Further, it should be understood by those skilled in the art that all or some of the sub-modules involved in the product provided by the embodiments of the present invention may be combined or replaced by fusion, simple change, mutual transformation, etc., such as placing and moving the components; or the products formed by the components are integrally arranged; or a detachable design; any combined component can be combined into a device/apparatus/system with a specific function, and the device/apparatus/system is used to replace the corresponding component of the present invention, which also falls into the protection scope of the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A plug for a voltage transformer, the plug comprising:

an outer sleeve (10) comprising a plug sleeve section (11) and a cable sleeve section (12) extending perpendicularly from the circumferential wall of the plug sleeve section (11);

a conductive cable (20) including a cable body (21) and a ring terminal (22) connected to one end of the cable body (21); and

a fuse assembly (30) detachably plugged into the barrel cavity of the plug-in sleeve section (11) and comprising a fuse body (31);

the conductive cable (20) is inserted into a cylinder cavity of the cable sleeve section (12), the annular terminal (22) is located in the cylinder cavity of the plug-in sleeve section (11), the axial inner end of the fuse body (31) penetrates through the annular terminal (22) in the state that the fuse component (30) is plugged in the plug-in sleeve section (11), and the axial outer end of the fuse body (31) is connected with the annular terminal (22).

2. Plug for a voltage transformer according to claim 1, characterized in that the fuse assembly (30) further comprises a plug (32), the plug (32) being detachably connected with the axially outer end of the plug sleeve section (11).

3. The plug for a voltage transformer according to claim 1, wherein a crimp ring protrusion (311) is provided on a peripheral wall of an axially outer end of the fuse body (31), the crimp ring protrusion (311) abutting against the ring terminal (22) in a state in which the fuse assembly (30) is plugged to the plug sleeve section (11).

4. The plug for a voltage transformer according to claim 2, wherein the fuse assembly (30) further comprises a press block connector (33), axial ends of the press block connector (33) are detachably connected with an axial outer end of the fuse body (31) and the plug (32), respectively, and an axial inner end of the press block connector (33) abuts against the circular ring terminal (22) in a state where the fuse assembly (30) is plugged into the plugging sleeve section (11).

5. Plug for a voltage transformer according to claim 4, characterized in that the axial ends of the press block connection piece (33) are threaded with the axial outer end of the fuse body (31) and the plug (32), respectively.

6. Plug for a voltage transformer according to any one of claims 1 to 5, characterized in that it further comprises a cap (40), said cap (40) removably covering the axially outer end of said plug-in sleeve segment (11).

7. A voltage transformer, characterized in that it comprises a plug for a voltage transformer according to claim 1 and a housing (50), an inner cylindrical seat (51) extending outwards from the housing (50), an axially inner end of the plug-in sleeve section (11) being externally sleeved on the inner cylindrical seat (51), and the annular terminal (22) being abutted against an axially outer end side wall of the inner cylindrical seat (51).

8. The voltage transformer according to claim 7, characterized in that the outer peripheral wall of the inner cylindrical seat (51) is provided with a limit ring groove (511), and the inner peripheral wall of the plug-in sleeve section (11) is provided with a limit ring protrusion (111) embedded in the limit ring groove (511).

9. The voltage transformer according to claim 7, characterized in that the plug further comprises a cap (40), the cap (40) removably covering an axially outer end of the plug-in sleeve segment (11); the voltage transformer further comprises a locking mechanism (60) for axially crimping the protective cap (40).

10. The voltage transformer according to claim 9, characterized in that said locking mechanism (60) comprises:

connecting lugs (61) which are arranged on both radial sides of the plug-in sleeve section (11) and project axially from the housing (50);

the draw hooks (62) are arranged on two radial sides of the inserting sleeve section (11), two axial ends of each draw hook are respectively a threaded end and a hooked end, and the hooked ends are connected with the connecting lug plates (61);

the outer edge of the pressure plate (63) is movably sleeved on the threaded end; and

a fastening nut (64) which is connected with the thread end in a threaded manner and is positioned above the pressure plate (63);

wherein the tightening nut (64) is axially movable to drive the pressure plate (63) into pressure contact with the cap (40).

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