CN216872535U - Ring main unit air box and ring main unit - Google Patents

Abstract

The utility model relates to a ring main unit gas box which comprises a box body, an isolating switch, connecting terminals and a positioning pressing plate, wherein the box body comprises a top plate, the isolating switch is arranged in the box body and electrically connected with the isolating switch, the top plate is provided with three connecting terminals, the three connecting terminals are arranged on the top plate, and the positioning pressing plate is used for fixing the three connecting terminals. Different from the prior art, the three wiring terminals are arranged on the top plate, so that the wiring terminals can be conveniently wired by a cable, and wiring is not required after a box body is opened; in addition, fix three binding post through the locating pressing plate, when the wiring, binding post dismouting cable, be unlikely to binding post's sleeve pipe and pulled out the damage, improve binding post's stability.

Description

Ring main unit air box and ring main unit

Technical Field

The utility model relates to the technical field of ring main units, in particular to a ring main unit air box and a ring main unit.

Background

The ring main unit is a group of high-voltage switch equipment which is arranged in a steel plate metal main unit body or is made into an assembling interval type ring main unit, belongs to the high-voltage switch main unit body, and the core part of the ring main unit adopts a load switch and a fuse.

In the prior art, patent publication No. CN212968812U discloses an environment-friendly maintenance-free fully-enclosed air box type ring main unit, which includes a box body, insulating binding posts, first fixed contacts, second fixed contacts, moving contacts, busbars, a lower bracket, an upper bracket and a rotating shaft, wherein the insulating binding posts are respectively arranged below the front end wall of the box body side by side, the first fixed contacts are respectively arranged at the front end of the lower bracket in parallel and spaced manner, the second fixed contacts are respectively arranged at the lower end of the upper bracket in parallel and spaced manner, the moving contacts are respectively arranged on the lower bracket in an up-and-down rotatable manner, the rotating shaft is rotatably arranged at the upper end of the box body, the moving contacts are respectively connected with the rotating shaft, the upper end of the moving contacts can be respectively detachably and electrically connected with the first fixed contacts and the second fixed contacts, and the box body is filled with environment-friendly insulating gas.

In the process of implementing the utility model, the inventor finds that the following problems exist in the prior art:

among the prior art, the binding post setting at the box top is in the inside of box, and inconvenient cable is to the binding post wiring, and is not provided with the locating plate and fixes, fixes a position the binding post, and when dismouting cable, binding post is pulled out easily, leads to binding post to damage.

SUMMERY OF THE UTILITY MODEL

Therefore, a ring main unit gas tank and a ring main unit are needed to be provided, and the ring main unit gas tank and the ring main unit are used for solving the technical problems that in the prior art, a wiring terminal at the top of a box body is arranged in the box body, a cable is inconvenient to wire and is not provided with a positioning plate to fix and position the wiring terminal, and the wiring terminal is easily pulled out to cause the damage of the wiring terminal when the cable is disassembled and assembled.

To achieve the above object, the inventor provides a ring main unit air box, comprising

A case comprising a top plate;

the isolating switch is arranged in the box body;

the wiring terminal is electrically connected with the isolating switch, three wiring terminals are arranged on the top plate, and the three wiring terminals are arranged on the top plate in an arrayed manner; and

and the positioning pressing plate is used for fixing the three wiring terminals.

Be different from prior art, the technical scheme of this application includes the roof through the box, and isolator sets up in the box, binding post with isolator electric connection, be provided with three binding post on the roof, three binding post arranges the setting and is in on the roof, positioning pressure plate is used for fixing three binding post. Therefore, the three wiring terminals are arranged on the top plate, so that the wiring terminals can be conveniently wired by cables without opening the box body and then wiring; in addition, the three wiring terminals are fixed through the positioning pressing plate, when the wiring terminals are used for dismounting and mounting the cable, the sleeves of the wiring terminals are not pulled out to be damaged, and the stability of the wiring terminals is improved.

As an embodiment of the present invention, the connection terminal includes a conductive rod and an insulator, the insulator is sleeved on the conductive rod, the conductive rod is used for electrically connecting with an external cable, the positioning pressing plate is fixed on the top plate through a fastener, and the positioning pressing plate is used for fixing the insulator. Therefore, the conducting rod can be electrically connected with an external cable, and the positioning pressing plate fixes the insulator through the fastener, so that the insulator is protected from being pulled out.

As an embodiment of the present invention, three first through holes for allowing the three connection terminals to pass through are formed in the positioning pressing plate, and a protrusion for mounting a ground wire is formed in each first through hole. So, be convenient for be connected with the earth connection through the arch to ground the location clamp plate.

As an embodiment of the utility model, the box body comprises a front box plate, three wiring terminals are arranged at the bottom of the front box plate, the three wiring terminals are arranged on the front box plate, and the ring main unit gas box further comprises a sleeve pressing plate, and the sleeve pressing plate is used for fixing the three wiring terminals on the front box plate. So, can fix three binding post on the front box board through the sleeve clamp plate, avoid when the wiring, three binding post's on the front box board sleeve pipe is pulled out and is damaged, improves binding post's stability.

As an embodiment of the present invention, the bushing pressure plate is provided with three second through holes for allowing the three connection terminals to pass through. So, through three second through-hole, make things convenient for sleeve pipe clamp plate to fix three binding post.

In one embodiment of the present invention, the cross-sectional shape of the sleeve pressing plate is a U-shape. Therefore, the cross section of the sleeve pressing plate is U-shaped, and the connection stability of the sleeve pressing plate and the front box plate is improved.

In one embodiment of the present invention, the front box plate is provided with two or more self-sealing valves for sealing the box body. Therefore, the self-sealing valve can be used for preventing the inert gas in the box body from being discharged, and the inert gas can be discharged through the self-sealing valve during maintenance, so that the maintenance is convenient.

As an embodiment of the present invention, the bottom of the front box plate is provided with an accommodating space for accommodating three connection terminals, and the three connection terminals are disposed in the accommodating space. So, conveniently hold three binding post on the front box board.

As an embodiment of the present invention, two ends of the top plate are respectively provided with one positioning hanging plate, and the two positioning hanging plates are respectively connected to two ends of the top plate. So, conveniently hoist looped netowrk cabinet air tank through the location hanger plate, and can splice each other through two location hanger plates between two looped netowrk cabinet air tanks.

To achieve the above object, the inventor provides a ring main unit, including the ring main unit air box as described in any one of the above mentioned inventor.

Different from the prior art, according to the ring main unit in the technical scheme, the three wiring terminals are arranged on the top plate, so that the wiring terminals can be conveniently wired by cables without opening the box body and then wiring; in addition, fix three binding post through the locating pressing plate, when the wiring, binding post dismouting cable, be unlikely to binding post's sleeve pipe and pulled out the damage, improve binding post's stability.

The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, further, the present invention can be implemented according to the contents described in the text and the drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description will be made in conjunction with the detailed description of the present application and the drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the application.

In the drawings of the specification:

fig. 1 is a schematic structural diagram of a ring main unit according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another angle of the ring main unit according to an embodiment of the present application;

fig. 3 is a schematic view of an internal structure of the ring main unit according to an embodiment of the present application;

FIG. 4 is a schematic view of a positioning platen according to an embodiment of the present application;

FIG. 5 is a front view of a positioning platen according to one embodiment of the present application;

fig. 6 is a schematic structural diagram of a ferrule holding plate according to an embodiment of the present application.

The reference numerals referred to in the above figures are explained below:

1. the box body is provided with a plurality of air inlets,

11. a top plate is arranged on the top plate,

12. the front box plate is arranged on the front box plate,

13. the self-sealing valve is arranged on the valve body,

14. the positioning hanging plate is arranged on the base plate,

2. the isolation switch is connected with the power supply and the power supply,

3. a connecting terminal is arranged on the base plate,

31. a conductive rod is arranged on the outer side of the shell,

32. an insulator is arranged on the upper surface of the insulating layer,

33. a fastener member for fastening the fastener member to the body,

4. a pressure plate is positioned, and the pressure plate is fixed,

41. a first through-hole is formed in the first substrate,

42. the convex part is arranged on the upper surface of the base,

5. a sleeve pipe pressure plate is arranged on the sleeve pipe,

51. a second through-hole is formed in the first through-hole,

6. an operating mechanism of the circuit breaker is provided,

7. three station mechanisms.

Detailed Description

In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.

Unless otherwise defined, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".

In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.

As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.

The inventor discovers that in the prior art, the wiring terminal at the top of the box is arranged in the box, the cable is inconvenient to be connected with the wiring terminal, the positioning plate is not arranged to fix and position the wiring terminal, and the wiring terminal is easily pulled out when the cable is dismounted and mounted, so that the wiring terminal is damaged.

Therefore, an embodiment of the present application provides a technical solution, please refer to fig. 1 to 6, and the embodiment relates to a ring main unit, which includes a ring main unit air box, where the ring main unit air box includes a box body 1, a ring main unit switch device disposed in the box body 1, and a circuit breaker operating mechanism 6 and a three-position mechanism 7 disposed outside the box body 1. The ring main unit switch device comprises a vacuum switch and an isolating switch 2. The circuit breaker operating mechanism 6 is used for controlling the vacuum switch to move downwards and upwards, namely controlling the static contact; the three-position mechanism 7 is used for rotating three movable isolating switches 2 of the isolating switch 2, namely for controlling three groups of movable contacts. The circuit breaker operating mechanism 6 and the three-position mechanism 7 are conventional technical means, and will not be described in a repeated manner.

Vacuum circuit breakers mainly comprise three major parts: vacuum interrupter, electromagnetism or spring operating mechanism, support and other parts. The working principle of the vacuum circuit breaker is as follows: when the moving contact and the static contact are switched off under the action of the operating mechanism, electric arcs are generated between the contacts, steam is volatilized from the surfaces of the contacts at high temperature, a magnetic field is generated when current passes through the contacts due to the special shape of the contacts, the electric arcs rapidly move along the tangential direction of the surfaces of the contacts under the action of the magnetic field, partial metal steam is condensed on the metal cylinder (shielding cover), the electric arcs are extinguished when the electric arcs naturally pass through zero, and the medium strength between the contacts is rapidly recovered.

In this embodiment, the ring main unit further includes a box body, an isolation switch and a switch supporting mechanism, where the box body includes a left box plate and a right box plate; the isolator sets up in the box, switch supporting mechanism is used for supporting isolator, switch supporting mechanism includes switch backup pad and support piece, the both ends of switch backup pad respectively with left boxboard right boxboard is connected, support piece sets up in the switch backup pad, support piece is used for right isolator's bottom supports. So, support piece can support isolator one end or the bottom of the other end, transmits isolator's gravity for left boxboard, right boxboard by the switch backup pad to can effectively improve isolator's holding power, avoid isolator's bottom to move down, and lead to the problem of looped netowrk cabinet whole inefficacy.

The switch support plate is provided with more than two support pieces, the more than two support pieces are arranged along the horizontal direction, and the more than two support pieces are respectively positioned at different positions of the bottom of the isolating switch. So, through the support piece more than two, can support the different positions of isolator's bottom respectively, further improve the holding power to isolator.

The box still includes preceding boxboard and back shrouding, isolator includes isolator support back wallboard, isolator support back wallboard with the back shrouding is connected, the switch backup pad is located the below of isolator support back wallboard, support piece is used for right the bottom of isolator support back wallboard supports. So, wallboard is connected with preceding boxboard behind the isolator support, and on the gravity of wallboard can transmit the back shrouding behind the isolator support, can support the wallboard behind the isolator support through support piece, avoids the wallboard bottom to move down behind the isolator support.

In this embodiment, the switch supporting mechanism is configured to support the isolation switch, and the switch supporting mechanism includes at least two supporting rods and a reinforcing rib connected to the at least two supporting rods, one end of each supporting rod is connected to the front box plate, and the other end of each supporting rod is connected to the rear sealing plate. So, the vaulting pole supports respectively between front box board and back shrouding, and at least two vaulting poles can form a whole through the strengthening rib, and on single vaulting pole atress transmitted all vaulting poles, improved the holding power of single vaulting pole, avoid the vaulting pole to inwards press and sink, improve the security of looped netowrk cabinet.

In this embodiment, the brace rod is connected to the front box plate through a first connecting plate, one end of the brace rod is welded to the first connecting plate, and the first connecting plate is welded to the front box plate. Therefore, the supporting rod improves the stress area between the supporting rod and the front box plate through the first connecting plate, and the bearing capacity of the supporting rod is improved.

The first connecting plate is in a long strip shape, one end of the supporting rod is welded to the middle section of the first connecting plate, and the upper end and the lower end of the first connecting plate are welded to the front box plate through connecting columns respectively. Therefore, the first connecting plate is in a long strip shape, one end of the support rod is welded in the middle section of the first connecting plate, the upper end and the lower end of the first connecting plate are respectively welded on the front box plate through the connecting column, the connecting strength of the first connecting plate and the front box plate is enhanced, and the bearing capacity of the support rod is further improved.

In this embodiment, a looped netowrk cabinet gas tank includes box 1, isolator 2, binding post 3 and positioning press plate 4, and box 1 includes roof 11, and isolator 2 sets up in box 1, and binding post 3 is connected with isolator 2 electricity, is provided with three binding post 3 on the roof 11, and three binding post 3 is arranged and is set up on roof 11, and positioning press plate 4 is used for fixing three binding post 3.

In this embodiment, include roof 11 through box 1, isolator 2 sets up in box 1, and binding post 3 is connected with isolator 2 electricity, is provided with three binding post 3 on the roof 11, and three binding post 3 arranges and sets up on roof 11, and positioning pressure plate 4 is used for fixing three binding post 3. Therefore, the three wiring terminals 3 are arranged on the top plate 11, so that the wiring terminals 3 can be conveniently wired by cables without opening the box body 1 and then wiring; in addition, three binding post 3 are fixed through positioning pressing plate 4, and when wiring, binding post 3 dismouting cable, be unlikely to binding post 3's sleeve pipe and pulled out the damage, improve binding post 3's stability.

In some embodiments, the terminal 3 includes a conductive rod 31 and an insulating body 32, the insulating body 32 is sleeved on the conductive rod 31, the conductive rod 31 is used for electrically connecting with an external cable, the positioning pressing plate 4 is fixed on the top plate 11 by a fastener 33, and the positioning pressing plate 4 is used for fixing the insulating body 32. In this way, the conductive rod 31 can be electrically connected to an external cable, and the positioning pressing plate 4 fixes the insulator 32 by the fastener 33, thereby protecting the insulator 32 from being pulled out.

In some embodiments, more than two self-sealing valves 13 are disposed on the front box plate 12, and the self-sealing valves 13 are used for sealing the box body 1. Thus, the self-sealing valve 13 can be used for preventing the inert gas in the box body 1 from being discharged, and the inert gas can be discharged through the self-sealing valve 13 during maintenance, so that the maintenance is convenient.

In some embodiments, the bottom of the front box plate 12 is provided with an accommodation space for accommodating three connection terminals 3, and the three connection terminals 3 are disposed in the accommodation space. Thus, three terminals 3 on the front box plate 12 are conveniently accommodated.

In some embodiments, two positioning hanging plates 14 are respectively disposed at two ends of the top plate 11, and the two positioning hanging plates 14 are respectively connected to two ends of the top plate 11. So, conveniently hoist looped netowrk cabinet air tank through location hanger plate 14, and can splice each other through two location hanger plates 14 between two looped netowrk cabinet air tanks. In this embodiment, the positioning hanger plate 14 is provided with a large hoisting hole and a small splicing hole.

In some embodiments, as shown in fig. 4 and 5, the positioning pressing plate 4 is provided with three first through holes 41 for allowing the three connection terminals 3 to pass through, and the first through holes 41 are provided with protrusions 42 for mounting a ground wire. In this manner, the protrusion 42 facilitates connection with a ground line, thereby grounding the positioning pressure plate 4.

In some embodiments, the box body 1 includes a front box plate 12, three connection terminals 3 are disposed at a bottom of the front box plate 12, the three connection terminals 3 are arranged on the front box plate 12, and the ring main unit gas box further includes a sleeve pressing plate 5, and the sleeve pressing plate 5 is used for fixing the three connection terminals 3 on the front box plate 12. So, can fix three binding post 3 on the front box board 12 through sleeve clamp plate 5, avoid when the wiring, the damage is pulled out to three binding post 3's on the front box board 12 sleeve pipe, improves binding post 3's stability.

In some embodiments, as shown in fig. 6, the sleeve pressing plate 5 is provided with three second through holes 51 for allowing the three connection terminals 3 to pass through. Thus, the three wiring terminals 3 are fixed by the bushing pressing plate 5 through the three second through holes 51.

In some embodiments, the cross-sectional shape of the cannula platen 5 is U-shaped. In this way, the cross-sectional shape of the sleeve pressing plate 5 is U-shaped, so that the stability of the connection between the sleeve pressing plate 5 and the front box plate 12 is improved.

Different from the prior art, in the ring main unit in the embodiment, the three wiring terminals 3 are arranged on the top plate 11, so that the wiring terminals 3 can be conveniently wired by a cable without opening the box body 1 and then wiring; in addition, three binding post 3 are fixed through positioning pressing plate 4, and when wiring, binding post 3 dismouting cable, be unlikely to binding post 3's sleeve pipe and pulled out the damage, improve binding post 3's stability.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by changing and modifying the embodiments described herein or by using the equivalent structures or equivalent processes of the content of the present specification and the attached drawings, and are included in the scope of the present patent.

Claims (10)

1. A ring main unit gas tank is characterized by comprising

A case comprising a top plate;

the isolating switch is arranged in the box body;

the wiring terminal is electrically connected with the isolating switch, three wiring terminals are arranged on the top plate, and the three wiring terminals are arranged on the top plate in an arrayed manner; and

and the positioning pressing plate is used for fixing the three wiring terminals.

2. The ring main unit gas box of claim 1, wherein the terminal block comprises a conductive rod and an insulator, the insulator is sleeved on the conductive rod, the conductive rod is used for being electrically connected with an external cable, the positioning pressing plate is fixed on the top plate through a fastener, and the positioning pressing plate is used for fixing the insulator.

3. The ring main unit gas tank as claimed in claim 1 or 2, wherein the positioning pressing plate is provided with three first through holes for allowing three wiring terminals to pass through, and the first through holes are provided with protrusions for mounting grounding wires.

4. The ring main unit gas box according to claim 1, wherein the box body comprises a front box plate, three wiring terminals are arranged at the bottom of the front box plate, three wiring terminals are arranged on the front box plate, and the ring main unit gas box further comprises a sleeve pressing plate, and the sleeve pressing plate is used for fixing the three wiring terminals on the front box plate.

5. The ring main unit gas box according to claim 4, wherein the bushing pressure plate is provided with three second through holes for allowing three connection terminals to pass through.

6. The ring main unit air box of claim 4, wherein the cross-sectional shape of the sleeve clamp plate is U-shaped.

7. The ring main unit gas box according to claim 4, wherein the front box plate is provided with more than two self-sealing valves, and the self-sealing valves are used for sealing the box body.

8. The ring main unit gas box according to claim 4, wherein the bottom of the front box plate is provided with an accommodating space for accommodating three wiring terminals, and the three wiring terminals are arranged in the accommodating space.

9. The ring main unit air box according to claim 1, wherein two ends of the top plate are respectively provided with a positioning hanging plate, and the two positioning hanging plates are respectively connected with the two ends of the top plate.

10. A ring main unit, comprising: the ring main unit air box of any one of claims 1 to 9.

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