CN218216130U

CN218216130U - Metal armored fixed high-low voltage switch equipment

Info

Publication number: CN218216130U
Application number: CN202222666855.0U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Shuoshi Electric Technology Co ltd
Current assignee: Zhejiang Shuoshi Electric Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-03
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a fixed high low voltage switchgear of metal armor, including consecutive setting cabinet internal generating line terminal, vacuum load switch and fuse device, fuse device's one end and vacuum load switch circuit connection, its other end is connected with the copper bar of being qualified for the next round of competitions, the internal below of cabinet is provided with installation base and mutual-inductor structure, the copper bar of being qualified for the next round of competitions passes through the mutual-inductor structure of installation structure location on the installation base and extension, use vacuum load switch and fuse device combination together, utilize the fuse device to have the short-circuit current of breaking ability, not only accomplish the task of breaking the circuit and can show the effect of the heat and the electric power that alleviate the short-circuit current and arouse, and through be provided with the temperature sensor who is used for detecting the copper bar temperature information of being qualified for the next round of competitions on the installation base, can carry out real-time temperature monitoring to the inner loop of switchgear, guarantee the security that switchgear used.

Description

Metal armored fixed high-low voltage switch equipment

Technical Field

The utility model relates to a power transmission and distribution equipment technical field, concretely relates to fixed high-low voltage switchgear of metal armor.

Background

The main function of the high-low voltage switch cabinet is to open, close, control and protect electric equipment in the process of generating electricity, transmitting electricity, distributing electricity and converting electric energy in a high-low voltage power system, and a circuit breaker, a lightning arrester, a bus assembly, various instruments and meters and the like are arranged in the high-low voltage switch cabinet. The switch cabinet can be widely used in a 10kV distribution network system, the switch cabinet usually adopts a circuit breaker for distributing electric energy to protect a power supply circuit, the circuit can be automatically cut off when faults such as serious overload or short circuit occur in the working process, but a high-voltage circuit must have an obvious visible disconnection point to ensure the disconnection safety of the circuit, the circuit breaker cannot be used as the obvious disconnection point, and particularly, the switch cabinet is configured and applied to the front end of a 10kV transformer, the short circuit fault of the circuit breaker is still not rapid enough, and the damage to the transformer can be caused; in addition, the switch cabinet can generate heat due to long-term current passing of the internal circuit and internal resistance of the internal circuit in the process of operation, and when the temperature of the copper bar circuit exceeds a safety range, the safety can be reduced or even damaged, so that the internal circuit of the high-voltage switch cabinet needs to be monitored, the temperature of the circuit breaker is found to be too high as soon as possible, and a countermeasure is taken in time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the circuit breaker in the cubical switchboard among the prior art and can not regard as obvious disconnected point to use to and the inside circuit high temperature of cubical switchboard can not in time be discover to take corresponding measure, has the problem of potential safety hazard.

In order to solve the technical problem, the utility model provides a fixed high-low voltage switchgear of metal armor, including the cabinet body with set up internal generating line terminal, vacuum load switch and the fuse device of cabinet in proper order continuously, be provided with the wall bushing on the both sides lateral wall of the cabinet body respectively, the inlet wire copper bar pass through the wall bushing in the generating line terminal, the fuse device one end with vacuum load switch circuit connection, the other end of fuse device is connected with the copper bar of being qualified for the next round of competitions, the fuse device can be used for triggering when fusing vacuum load switch dropout disconnection, the inside below of cabinet body is provided with mounting boss and mutual-inductor structure, the copper bar of being qualified for the next round of competitions passes through the mounting structure location on the mounting boss, and extends the extension mutual-inductor structure, be provided with on the mounting boss and be used for detecting the temperature sensor of copper bar temperature information of being qualified for the next round of being qualified for the competitions.

As a preferable scheme, a preassembly hole is formed in the mounting boss, and the temperature sensor is embedded in the preassembly hole and is in direct or indirect contact with the outgoing copper bar.

As a preferable scheme, the mounting structure comprises a fixing hole arranged on the mounting boss and a fastener penetrating through the outgoing line copper bar and fastened in the fixing hole, and the pre-installation hole is connected to the lower end of the fixing hole, so that the temperature sensor detects temperature information of the outgoing line copper bar through the fastener.

Preferably, the temperature sensor is a thermal resistance type temperature sensor embedded in the preassembly hole and contacted with the fastener.

Preferably, the temperature sensor is an infrared temperature sensor embedded in the pre-installation hole and opposite to the fastener at a distance.

As a preferable scheme, the outlet copper bar comprises an inclined part which is bent and extends to the mounting boss, and a straight plate part which is connected with the inclined part and penetrates through the transformer structure.

Preferably, the mounting boss is made of an insulating resin material, and the transformer structure is a current transformer fixed on one side of the mounting boss.

As a preferred scheme, the vacuum load switch comprises an insulating support, a vacuum arc extinguish chamber and a tripping mechanism matched with a striker of a fuse device, wherein the fuse device is installed on the insulating support.

As a preferable scheme, the vacuum load switches and the fuse device are assembled into a whole for use, and three groups are arranged in the cabinet body.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. the utility model provides an among the fixed high low voltage switchgear of metal armor, the internal vacuum load switch and the fuse device that link to each other in proper order of installing of cabinet, this kind of vacuum load switch can regard as load current's break-make to use, and the fuse device has the short-circuit current ability of breaking, use the combination of the two together, utilize the current limiting function of fuse device, not only accomplish the task of breaking circuit and can show the effect that alleviates heat and electric power that short-circuit current arouse, it is quicker than the circuit breaker according to the time of fuse device break-make short-circuit current, in order to reach the effect of excision short-circuit fault in order to avoid causing the damage to equipment as early as possible, wherein, the copper bar of being qualified for the next round of competitions that links to the fuse device is fixed at the installation boss, through be provided with the temperature sensor who is used for detecting copper bar temperature information on the installation boss, the benefit of design lies in such as, carry out real-time temperature monitoring to switchgear's inner loop through the copper bar, in case detect the high temperature can inform the staff to take counter measure, guarantee the security that switchgear used.

2. The utility model provides an among the fixed high low voltage switchgear of metal armor, fix in the mounting hole of installation boss through the fastener according to the copper bar of being qualified for the next round of competitions, temperature sensor inlays the dress and is in the pre-installation hole, and pre-installation hole connection is in fixed orifices lower extreme position, and this kind of mounting hole and pre-installation hole are integrative intercommunication design, installation convenient to use, make temperature sensor install to the pre-installation hole in can with fastener direct or indirect contact to through the fastener in order to detect the temperature information of the copper bar of being qualified for the next round of competitions, this kind of temperature sensor can adopt with fastener direct contact's thermal resistance formula temperature sensor, or adopt with the fastener indirect relative infrared ray formula temperature sensor, can all detect the temperature information who acquires the copper bar of being qualified for the next round of competitions through thermal resistance formula or infrared ray formula temperature sensor, this kind of temperature sensor's setting mode is various, and temperature acquisition is accurate reliable.

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.

Fig. 1 is a schematic structural view of the metal armored fixed high-low voltage switchgear of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the metal armored fixed high-low voltage switchgear of the present invention;

FIG. 3 is a schematic view of the mounting structure of the temperature sensor shown in FIG. 2;

description of reference numerals: 1. a cabinet body; 11. a wall bushing; 12. leading in a copper bar; 2. a bus bar terminal; 3. a vacuum load switch; 31. an insulating support; 32. a vacuum arc-extinguishing chamber; 4. a fuse device; 5. mounting a boss; 51. pre-installing holes; 6. a mounting structure; 61. a fastener; 62. a fixing hole; 7. a transformer structure; 8. an outgoing line copper bar; 81. an inclined portion; 82. a straight plate portion; 9. a temperature sensor.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example 1

The utility model provides a as shown in fig. 1-3 fixed high-low voltage switchgear of metal armor, including the cabinet body 1 with link to each other in proper order and set up the internal generating line terminal 2 of cabinet, vacuum load switch 3 and fuse device 4, be provided with wall bushing 11 on the both sides lateral wall of the cabinet body 1 respectively, inlet wire copper bar 12 through wall bushing 11 connect in generating line terminal 2, fuse device 4 one end with vacuum load switch 3 circuit connection, fuse device 4's the other end is connected with outlet copper bar 8, fuse device 4 can be used for triggering when the fusing vacuum load switch 3 dropout disconnection, the internal below of cabinet is provided with installation boss 5 and mutual-inductor structure 7, outlet copper bar 8 is in through the location of installation structure 6 on the installation boss 5, and extend the mutual-inductor structure 7, be provided with on the installation boss 5 and be used for detecting outlet copper bar temperature information's temperature sensor 9.

The above embodiment is a core technical scheme of this embodiment, by installing the vacuum load switch 3 and the fuse device 4 connected in sequence in the cabinet body 1, this kind of vacuum load switch 3 can be used as the break-make of load current, and the fuse device 4 has the ability of breaking short-circuit current, use the combination of the two together, utilize the current limiting function of the fuse device 4, not only accomplish the task of breaking the circuit and can show the effect that alleviates heat and electric power that the short-circuit current arouses, time according to the fuse device 4 breaks short-circuit current is faster compared with the circuit breaker, so as to reach the effect of cutting off short-circuit fault as soon as possible to avoid causing the damage to equipment, wherein, the copper bar 8 that is qualified for the next round of competitions is connected with the fuse device and is fixed a position on the installation boss, through being provided with the temperature sensor 9 that is used for detecting the temperature information of the copper bar that is qualified for the next round of competitions on the market on the basis, the temperature sensor carries out the real-time temperature monitoring to the inner loop of switchgear through the temperature sensor, once detect the copper bar is too high temperature can send alarm signal or in time inform the staff to take the countermeasure, guarantee the security that switchgear uses.

The way in which the temperature sensor is arranged is described in detail below with reference to fig. 1-3:

the installation boss 5 is provided with a preassembly hole 51, the temperature sensor 9 is embedded in the preassembly hole 51 and is in direct or indirect contact with the outlet copper bar 8, and therefore temperature information on the outlet copper bar 8 can be collected in real time through the temperature sensor 9.

As a specific structural arrangement, the mounting structure 6 includes a fixing hole 62 arranged on the mounting boss 5 and a fastener 61 passing through the outlet copper bar 8 and fastened in the fixing hole 62, a connecting hole for the fastener 61 to pass through is arranged on the outlet copper bar 8, the outlet copper bar 8 is fixed on the mounting boss 5 by the cooperation of the fastener 61 and the fixing hole 62, the fastener 61 may preferably be of a bolt structure, the fixing hole 62 is of a screw hole structure, the pre-installation hole 51 is connected at the lower end position of the fixing hole 62, so that the temperature sensor 9 detects the temperature information of the outlet copper bar 8 through the fastener 61, and the fastener 61 is in close contact with the outlet copper bar 8 to achieve the effect of rapid heat conduction. According to the structure, the mounting hole and the pre-installation hole 51 are integrally communicated, the temperature sensor 9 can be conveniently installed on the mounting boss 5, the temperature sensor 9 can be installed in the pre-installation hole 51 and can be directly or indirectly contacted with the fastener 61, so that the temperature information of the outgoing line copper bar 8 can be acquired by detecting the temperature of the fastener, the temperature sensor 9 can be a thermal resistance type temperature sensor 9 directly contacted with the fastener 61 or an infrared ray type temperature sensor 9 indirectly opposite to the fastener 61, the temperature information of the outgoing line copper bar can be acquired by detecting through the thermal resistance type or infrared ray type temperature sensor, the temperature sensor is diversified in arrangement mode, and the temperature acquisition is accurate and reliable.

As shown in fig. 3, copper bar 8 of being qualified for next round of competitions extends to including bending the rake 81 of installation boss 5 department to and link to each other and pass the straight board 82 of transformer structure 7 with rake 81, perhaps, copper bar 8 of being qualified for the next round of competitions passes through 6 fixed connection of mounting structure by rake 81 and straight board 82 and is in the same place, wherein, straight board 82 cooperation is fixed on installation boss 5, installation boss 5 is made by insulating resin material, transformer structure 7 is for fixing the current transformer of 5 one sides of installation boss can gather through current transformer and acquire the current information of copper bar 8 of being qualified for the next round of competitions to play the fixed stay effect to the longer copper bar of being qualified for the next round of competitions of extension length with the help of installation boss 5, guarantee the stability of copper bar installation in the cabinet body of being qualified for the next round of competitions.

The high-low voltage switchgear that this embodiment provided is a high-low voltage switchgear, vacuum load switch 3 with fuse device 4 assembles an organic whole and uses, and be provided with three groups in the cabinet body 1, can satisfy the user demand of three-phase circuit like this. As a specific structural arrangement, the vacuum load switch 3 includes an insulating support 31, a vacuum interrupter 32, and a tripping mechanism cooperating with an impactor of the fuse device 4, the fuse device 4 is mounted on the insulating support 31, the tripping mechanism is a contact structure connected to the vacuum interrupter 32 through a transmission structure, and the tripping mechanism drives the vacuum load switch to perform a switching-off operation when a tripping operation occurs, so that when a short-circuit fault occurs in a circuit, a fuse element of the fuse device melts, the tripping mechanism of the vacuum load switch immediately trips under the operation of the impactor of the fuse device, thereby separating a moving contact and a stationary contact in the vacuum interrupter, and disconnecting the vacuum load switch.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a fixed high low-voltage switchgear of metal armor which characterized in that: including the cabinet body (1) and consecutive bus bar terminal (2), vacuum load switch (3) and fuse device (4) that set up in the cabinet body (1), be provided with wall bushing (11) on the both sides lateral wall of the cabinet body (1) respectively, inlet wire copper bar (12) through wall bushing (11) connect in bus bar terminal (2), the one end of fuse device (4) with vacuum load switch (3) circuit connection, the other end of fuse device (4) is connected with outlet copper bar (8), fuse device (4) can be used for triggering when the fusing vacuum load switch (3) dropout disconnection, cabinet body (1) inside below is provided with installation boss (5) and mutual-inductor structure (7), outlet copper bar (8) are fixed a position through mounting structure (6) on installation boss (5), and pass through mutual-inductor structure (7), be provided with on installation boss (5) and be used for detecting outlet copper bar temperature information's temperature sensor (9).

2. The metal armored stationary high-low voltage switchgear according to claim 1, wherein:

the installation boss (5) is provided with a pre-installation hole (51), and the temperature sensor (9) is embedded in the pre-installation hole (51) and is in direct or indirect contact with the outgoing line copper bar (8).

3. The metal-clad fixed high-low voltage switchgear according to claim 2, wherein:

the mounting structure (6) comprises a fixing hole (62) formed in the mounting boss (5) and a fastener (61) penetrating through the outlet copper bar (8) and fastened in the fixing hole (62), the preassembly hole (51) is connected to the lower end of the fixing hole (62), and the temperature sensor (9) is used for detecting temperature information of the outlet copper bar (8) through the fastener (61).

4. The metal-clad fixed high-low voltage switchgear according to claim 3, wherein:

the temperature sensor (9) is a thermal resistance type temperature sensor (9) which is embedded in the pre-installation hole (51) and is contacted with the fastening piece (61).

5. The metal-clad fixed high-low voltage switchgear according to claim 3, wherein:

the temperature sensor (9) is an infrared temperature sensor (9) which is embedded in the pre-installation hole (51) and is opposite to the fastening piece (61) at intervals.

6. Metal-clad fixed high-low voltage switchgear according to any of claims 1 to 5, characterized in that: the outlet copper bar (8) comprises an inclined part (81) which is bent and extends to the installation boss (5) and a straight plate part (82) which is connected with the inclined part (81) and penetrates through the transformer structure (7).

7. The metal armored stationary high-low voltage switchgear according to claim 6, wherein: the mounting boss (5) is made of insulating resin materials, and the transformer structure (7) is a current transformer fixed on one side of the mounting boss (5).

8. The metal armored stationary high-low voltage switchgear according to claim 1, wherein: vacuum load switch (3) including insulating support (31), vacuum interrupter (32) and with fuse device (4)'s impinger complex tripping device, fuse device (4) are installed on insulating support (31).

9. The metal armored stationary high-low voltage switchgear according to claim 8, wherein: the vacuum load switches (3) and the fuse device (4) are assembled into a whole for use, and three groups are arranged in the cabinet body (1).