CN111682422A

CN111682422A - Secondary box

Info

Publication number: CN111682422A
Application number: CN202010380936.7A
Authority: CN
Inventors: 刘凯; 夏小飞; 彭在兴; 王颂; 黄辉敏; 黎大健; 李锐海; 赵林杰
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd; Research Institute of Southern Power Grid Co Ltd
Current assignee: CSG Electric Power Research Institute; Electric Power Research Institute of Guangxi Power Grid Co Ltd; Research Institute of Southern Power Grid Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-09-18

Abstract

The invention relates to the technical field of power systems, and discloses a secondary box body, which comprises a box body and internal components; the box body comprises a main frame, a front door, a rear door, a box top cover and a box body support. One side of the front door and one side of the rear door are connected with the main frame; the main frame is provided with an opening and a diversion trench arranged around the opening, and the bottoms of the front door and the rear door are provided with drain holes; the box body also comprises a sealing strip, the inner side walls of the front door and the rear door are provided with sealing grooves, and one end of the sealing strip is clamped in the sealing groove; one surface of the diversion trench, which is far away from the main frame, extends to form a sealing surface; when the front door is attached to the main frame, the other end of the sealing strip is pressed on the sealing surface. The box top cover is designed to be an inclined shape with a low front part and a high back part; the box body support is provided with a wire inlet hole through which a cable passes, and the side wall of the box body support is provided with a ventilation fence. The internal components adopt modular design, and an intelligent monitoring device is added. The secondary box body has good waterproof, high-humidity-resistant, windproof, high-reliability and intelligent effects, and improves the operation reliability.

Description

Secondary box

Technical Field

The invention relates to the technical field of power systems, in particular to a secondary box.

Background

The breaker is a safety guard of a power system, has the capacity of bearing normal working current for a long time, bearing short-circuit current for a short time and breaking normal and fault current, and plays an important role in reliable operation of a power grid. Once the breaker breaks down, serious consequences can be brought to the system; the damage to the lines and equipment protected by the switchgear is caused if the power is low, and the large-area power failure of users is caused if the power is high, so that the national economic development and the normal life of people are influenced.

At present, a power transformation main equipment mechanism box, a terminal box, a control cubicle (collectively called a secondary box (cabinet)) and secondary elements are used as main functional components of circuit breaker equipment for accurate action and stable operation, and the reliability of the operation of the equipment is directly influenced by the performance of the main functional components. However, because the secondary box (cabinet) body is usually arranged outdoors and is subjected to high temperature, high humidity, salt fog, wind, rain and other environmental conditions for a long time, the secondary box body is easy to cause rainwater leakage, so that the secondary box body has more defects or faults, the service life is short, and the power supply safety is further influenced, thereby bringing great hidden troubles to the power grid safety.

Disclosure of Invention

The invention aims to provide a secondary box body which has a good waterproof effect, so that the service life of the secondary box body is prolonged, and the safety of a power system is ensured.

In order to solve the technical problem, the invention provides a secondary box, which comprises a box body, wherein the box body comprises a main frame and a front door, and one side of the front door is rotatably connected with one side of the front surface of the main frame; a cavity is arranged in the main frame, and a first opening communicated with the cavity is arranged on the front surface of the main frame; the front surface of the main frame is also provided with a first diversion trench arranged around the first opening, the bottom of the front door is provided with a first water receiving tank for receiving water flowing out of the first diversion trench, and a drain hole is arranged in the first water receiving tank;

the box body further comprises a first sealing strip, a first sealing groove is formed in the inner side wall of the front door, and one end of the first sealing strip is clamped in the first sealing groove; one surface of the first diversion trench, which is far away from the main frame, extends along the direction of the center line of the first opening to form a first sealing surface, and when the front door is attached to the main frame, the other end of the first sealing strip is in crimping connection with the first sealing surface.

Preferably, the box body further comprises a rear door, one side of the rear door is rotatably connected to one side of the rear surface of the main frame, and a second opening communicated with the cavity is formed in the rear surface of the main frame; a second diversion trench arranged around the second opening is further arranged on the rear surface of the main frame, a second water receiving trench used for receiving water flowing out of the second diversion trench is arranged at the bottom of the rear door, and a drain hole is formed in the second water receiving trench;

the box body further comprises a second sealing strip, a second sealing groove is formed in the inner side wall of the rear door, and one end of the second sealing strip is clamped in the second sealing groove;

one surface of the second diversion groove, which is far away from the main frame, extends along the direction of the center line of the second opening to form a second sealing surface; when the back door is attached to the main frame, the other end of the second sealing strip is in press-connection with the second sealing surface.

Preferably, the box body further comprises a box top cover arranged at the top of the main frame, the front end of the box top cover protrudes out of the front door, and the front end of the box top cover is inclined with a low front and a high back;

the rear end of the box top cover protrudes out of the rear door, and the rear end of the box top cover is in an inclined shape with a high front part and a low rear part;

the horizontal distance between the front end of the box top cover and the front end of the front door is more than 75mm and less than 150 mm; the horizontal distance between the rear end of the box top cover and the rear end of the rear door is greater than 75mm and less than 150 mm.

Preferably, a spacing space is arranged in the box top cover, and the height of the spacing space is greater than 20 mm.

As a preferred scheme, a heater and a remote control module for transmitting data with a background are arranged in the cavity, and the input end of the heater is connected with the control end of the remote control module;

the number of the heaters is at least 2, and the heaters are uniformly distributed at the middle lower part of the cavity; the power of each of the heaters is less than 30W, and the total power per cubic meter of the heaters arranged within the cavity is greater than or equal to 60W.

Preferably, a ventilation part is arranged on the outer side wall of the main frame, and a labyrinth-shaped air duct is arranged in the ventilation part; the main frame is further provided with a breathing hole communicated with the cavity, and the breathing hole is communicated with one end of the air channel.

As a preferable scheme, the box body further comprises a box body support arranged at the bottom of the main frame, a plugging structure is arranged at the top of the box body support, and a wire inlet hole for allowing a cable to pass through is formed in the plugging structure; the bottom of the box body support is provided with a partition board, and a ventilation fence is further arranged on the side wall of the box body support.

As a preferred scheme, the box body further comprises a first windproof lock catch, the first windproof lock catch comprises a first clamping portion and a second clamping portion, the first clamping portion is arranged on the outer side wall of the main frame, and the second clamping portion is arranged on the outer side wall of the front door; when the front door is attached to the main frame, the second clamping part is clamped with the first clamping part;

the box body further comprises a second windproof lock catch, the second windproof lock catch comprises a third clamping part and a fourth clamping part, the third clamping part is arranged on the outer side wall of the main frame, and the fourth clamping part is arranged on the outer side wall of the rear door; when the back door is attached to the main frame, the fourth clamping portion is clamped with the third clamping portion.

As a preferred scheme, the secondary box body further comprises an internal component, and the internal component is arranged in the cavity; the internal components comprise all secondary elements supporting the normal working function of the circuit breaker.

As a preferred scheme, the internal components specifically include a control panel, a circuit breaker control module, an isolation switch control module, a ground switch control module, a signal processing module and a remote control module, and a control end of the control panel is respectively connected with a first input/output end of the circuit breaker control module, a first input/output end of the isolation switch control module, a first input/output end of the ground switch control module and a first input/output end of the signal processing module; a second input/output end of the circuit breaker control module, a second input/output end of the disconnecting switch control module, a second input/output end of the grounding switch control module and a second input/output end of the signal processing module are respectively connected with a control end of the remote control module;

the internal components further comprise a current transformer, a voltage transformer, an auxiliary circuit and a hard contact interlocking circuit, the output end of the current transformer and the output end of the voltage transformer are respectively connected with the input end of the remote control module, and the first input/output end of the auxiliary circuit and the first input/output end of the hard contact interlocking circuit are respectively connected with the control end of the remote control module.

As a preferred scheme, the internal components further comprise a temperature and humidity sensor for detecting temperature and humidity, and an output end of the temperature and humidity sensor is connected with an input end of the remote control module and is used for transmitting the detected temperature and humidity to the background; wherein, the data transmission format in the secondary box supports the networking;

the internal components further comprise a first remote switch and a second remote switch, and the first remote switch is used for receiving local operation instructions sent by the background to control the isolating switch; the second remote switch is used for receiving a remote operation instruction sent by the background to control the grounding switch.

Preferably, the waterproof grade of the secondary box body is IP 55; the thickness of the box body is not less than 2 mm; the daily average humidity of the secondary box body is not higher than 65%; the temperature in the cavity is controlled to be-10-55 ℃.

Compared with the prior art, the invention provides the secondary box body, the first diversion trench is arranged on the front surface of the main frame, and the first water receiving trench with the drain hole is arranged at the bottom of the front door, so that water flowing onto the main frame can flow into the first water receiving trench through the first diversion trench and is discharged through the drain hole in the first water receiving trench, thereby effectively preventing water flowing onto the box body from flowing into the box body, and preventing the phenomenon of water accumulation on the secondary box body; simultaneously, through setting up first sealing strip, and make the qianmen laminate in during the main frame, the one end joint of first sealing strip is in the first seal groove of qianmen, just the other end crimping of first sealing strip is in on the first sealed face, thereby realized the qianmen with good sealed effect between the main frame has further avoided the outside rivers of secondary box flow into in the box, make the secondary box has good water-proof effects, and then can prevent effectively that the secondary box from taking place the phenomenon of rainwater seepage, consequently prolonged the life of secondary box is short to electric power system's security has been guaranteed. In addition, the secondary box body provided by the embodiment of the invention has good high-humidity prevention effect and wind prevention effect, and can effectively deal with outdoor environmental conditions such as high temperature, high humidity, salt mist, wind, rain and the like, so that the service life of the secondary box body is greatly prolonged, and the use safety of the secondary box body is ensured.

Drawings

FIG. 1 is a schematic structural diagram of a secondary box in an embodiment of the present invention;

FIG. 2 is an assembly view of a secondary case in an embodiment of the present invention;

FIG. 3 is a schematic view of the front door and cabinet assembly in an embodiment of the present invention;

FIG. 4 is a schematic structural view of a first sealing tape in the embodiment of the present invention;

fig. 5 is a schematic diagram of the connection of the control panel, the circuit board and the remote control module in an embodiment of the invention.

Wherein, 1, a main frame; 11. a cavity; 12. a first opening; 13. a first diversion trench; 131. a first sealing surface; 2. a front door; 21. a first water receiving tank; 211. a drain hole; 22. a first seal groove; 3. a first seal strip; 31. a first seal body; 311 a first card slot; 32. a first base; 321. a first protrusion; 4. a rear door; 5. a second seal strip; 6. a tank top cover; 7. a box body bracket; 8. a first windproof locking buckle; 9. a control screen; 10. a circuit board; 101. a circuit breaker control module; 102. an isolation switch control module; 103. a ground switch control module; 104. a signal processing module; 20. a remote control module; 301. a current transformer; 302. a voltage transformer; 303. an auxiliary loop; 304. a hard contact interlock loop.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 to 3, a secondary container according to a preferred embodiment of the present invention includes a container including a main frame 1 and a front door 2, one side of the front door 2 being rotatably coupled to one side of a front surface of the main frame 1; a cavity 11 is arranged in the main frame 1, and a first opening 12 communicated with the cavity 11 is arranged on the front surface of the main frame 1; a first diversion trench 13 arranged around the first opening 12 is further arranged on the front surface of the main frame 1, a first water receiving trench 21 for receiving water flowing out of the first diversion trench 13 is arranged at the bottom of the front door 2, and a water drainage hole 211 is arranged in the first water receiving trench 21;

the box body further comprises a first sealing strip 3, a first sealing groove 22 is formed in the inner side wall of the front door 2, and one end of the first sealing strip 3 is clamped in the first sealing groove 22; one surface of the first diversion trench 13 away from the main frame 1 extends along the direction of the center line of the first opening 12 to form a first sealing surface 131; when the front door 2 is attached to the main frame 1, the other end of the first weather strip 3 is pressed against the first sealing surface 131.

It can be understood that the front door 2 is attached to the main frame 1, that is, the front door 2 of the secondary box is in a closed state. In addition, in order to ensure a sealing effect between the front door 2 and the main frame 1, the first sealing strip 3 is disposed around the first opening 12; accordingly, when the front door 2 is attached to the main frame 1, the first seal groove 22 is disposed around the center line of the first opening 12, as shown in fig. 3.

In the embodiment of the present invention, the first guiding gutter 13 is disposed on the front surface of the main frame 1, and the first water receiving gutter 21 having the drainage hole 211 is disposed at the bottom of the front door 2, so that water flowing onto the main frame 1 can flow into the first water receiving gutter 21 through the first guiding gutter 13 and be drained through the drainage hole 211 in the first water receiving gutter 21, thereby effectively preventing water flowing onto the tank body from flowing into the tank body, and preventing water from accumulating on the secondary tank body; simultaneously, through setting up first sealing strip 3, and make 2 laminating in of qianmen during main frame 1, the one end joint of first sealing strip 3 is in the first seal groove 22 of qianmen, just the other end crimping of first sealing strip 3 is in on the first sealed face 131, thereby has realized qianmen 2 with good sealed effect between the main frame 1 has further avoided the outside rivers of secondary box flow into in the box, make the secondary box has good water-proof effects, and then can prevent effectively that the secondary box from taking place the phenomenon of rainwater seepage, consequently prolonged the life of secondary box is short to electric power system's security has been guaranteed.

In the embodiment of the present invention, the number and the positions of the drain holes 211 disposed in the first water receiving tank 21 may be set according to actual use conditions; in order to ensure that the phenomenon of water accumulation in the secondary tank can be avoided, it is preferable that the first water receiving tank 21 includes a plurality of water discharge holes 211.

In the embodiment of the present invention, in order to improve the convenience of using the secondary box and ensure the waterproof effect of the secondary box, preferably, the box of the embodiment further includes a rear door 4, one side of the rear door 4 is rotatably connected to one side of the rear surface of the main frame 1, and a second opening communicated with the cavity 11 is provided on the rear surface of the main frame 1; a second diversion trench surrounding the second opening is further arranged on the rear surface of the main frame 1, a second water receiving trench for receiving water flowing out of the second diversion trench is arranged at the bottom of the rear door 4, and a drain hole is formed in the second water receiving trench. The secondary box body is convenient for a user to use by providing a second opening communicating with the cavity 11 on the rear surface of the main frame 1 and providing the rear door 4; meanwhile, the second diversion trench is arranged on the rear surface of the main frame 1, and the second water receiving trench with the drain hole is arranged at the bottom of the rear door 4, so that water flowing to the rear part of the box body can flow into the second water receiving trench through the second diversion trench and is discharged through the drain hole in the second water receiving trench, thereby further effectively preventing the water flowing to the box body from flowing into the box body, and further preventing the secondary box body from generating water accumulation.

As shown in fig. 2, in order to further improve the waterproof effect of the secondary box, the box further includes a second sealing strip 5, a second sealing groove is formed in the inner side wall of the rear door 4, and one end of the second sealing strip is clamped in the second sealing groove;

one surface of the second diversion trench, which is far away from the main frame 1, extends along the central line direction of the second opening to form a second sealing surface; when the rear door 4 is attached to the main frame 1, the other end of the second weather strip 5 is crimped to the second sealing surface. Through setting up second sealing strip 5, and make back door 4 laminate in during main frame 1, the one end joint of second sealing strip 5 is in the second seal groove of back door 4, just the other end crimping of second sealing strip 5 is in on the sealed face of second, thereby realized back door 4 with good sealed effect between the main frame 1 has further been avoided the outside rivers of secondary box are gone into in the box, consequently guaranteed the secondary box has good water-proof effects.

It can be understood that the back door 4 is attached to the main frame 1, that is, the back door 4 of the secondary main frame is in a closed state. In addition, in order to secure a sealing effect between the rear door 4 and the main frame 1, the second sealing strip 5 is provided around the second opening; accordingly, when the rear door 4 is attached to the main frame, the second seal groove is disposed around a center line of the second opening.

In the embodiment of the invention, the number and the positions of the drain holes arranged in the second water receiving tank can be set according to the actual use condition; in order to ensure that the phenomenon of water accumulation in the secondary tank can be avoided, it is preferable that the second water receiving tank 1 is provided with a plurality of drain holes.

In the embodiment of the present invention, the materials and shapes of the first sealing strip 3 and the second sealing strip 5 may be set according to actual use conditions, and only the requirement that the sealing effect between the front door 2 and the main frame 1 and between the rear door 4 and the main frame 1 can be achieved is satisfied. In order to simplify the structure and ensure the sealing effect, preferably, the first sealing strip 3 in this embodiment is made of an epdm material; the first sealing strip 3 is in a dispensing omega shape. The second sealing strip 5 is made of an ethylene propylene diene monomer material; the second sealing strip 5 is in a dispensing omega shape.

Specifically, as shown in fig. 4, the first sealing strip 3 of this embodiment includes a first sealing body 31 and a first base 32, one end of the first sealing body 31 is connected with one end of the first base 32, a first protrusion 321 extending along a first direction is disposed on the other end of the first base 32, a first clamping groove 311 is disposed at one end of the first sealing body 31 close to the first base 32, and the first protrusion 321 is clamped in the first clamping groove 311. Then the process of the first step is carried out,

one end of the first sealing strip 3 is clamped in the first sealing groove 22; the other end of the first sealing strip 3 is crimped on the first sealing surface 131, specifically:

the first base 32 is clamped in the first sealing groove 22; an end of the first sealing body 31 remote from the first seat 32 is crimped onto the first sealing surface 131, as shown in fig. 2.

In the embodiment of the present invention, preferably, the second sealing strip 5 of this embodiment includes a second sealing body and a second base, one end of the second sealing body is connected to one end of the second base, a second protrusion extending along a third direction is disposed on the other end of the second base, a second clamping groove is disposed at one end of the second sealing body close to the second base, and the second protrusion is clamped in the second clamping groove. Then the process of the first step is carried out,

one end of the second sealing strip is clamped in the second sealing groove; the other end of the second sealing strip 5 is crimped on the second sealing surface, which specifically comprises:

the second base is clamped in the second sealing groove; one end of the second sealing body, which is far away from the second base, is pressed on the second sealing surface.

As shown in fig. 1 and fig. 2, in order to further prevent rainwater from flowing into the box body, preferably, the secondary box body of this embodiment further includes a box top cover 6 disposed on the top of the main frame 1, a front end of the box top cover 6 protrudes from the front door 2, and a front end of the box top cover 6 is inclined in a shape that is low in front and high in back;

the rear end of the box top cover 6 protrudes out of the rear door 4, and the rear end of the box top cover 6 is inclined with a high front and a low rear. The top cover 6 is arranged at the top of the main frame 1, the front end of the top cover 6 protrudes out of the front door 2, and the rear end of the top cover 6 protrudes out of the rear door 4, so that rainwater can be shielded for the main frame 1 through the top cover 6; simultaneously, through making the high slope form in low back before the front end of case top cap 6, just the low slope form in high back before the rear end of case top cap 6 is, makes to flow to water on the case top cap 6 can be followed the case top cap 6 of slope form and flowed down smoothly, has avoided the phenomenon of secondary box ponding, consequently further avoids the rainwater to flow to in the box, thereby further improved the water-proof effects of secondary box.

In the embodiment of the present invention, when the front door 2 is attached to the main frame 1, the horizontal distance between the front end of the box top cover 6 and the front end of the front door 2; and when the back door 4 is attached to the main frame 1, the horizontal distance between the rear end of the box top cover 6 and the rear end of the back door can be set according to actual use conditions, and the box top cover 6 only needs to be ensured that the front end protrudes out of the front door 2 and the rear end of the box top cover 6 protrudes out of the back door 4. In order to simplify the structure, reduce the cost, and ensure that the main frame 1 can be shielded from rainwater through the box top cover 6, in this embodiment, preferably, when the front door 2 is attached to the main frame 1, the horizontal distance between the front end of the box top cover 6 and the front end of the front door 2 is greater than 75mm and less than 150 mm. When the rear door 4 is attached to the main frame 1, the horizontal distance between the rear end of the box top cover 6 and the rear end of the rear door 4 is greater than 75mm and less than 150 mm.

As shown in fig. 3, in order to further avoid the phenomenon of water accumulation in the secondary box body and ensure that the secondary box body has a good waterproof effect, preferably, the top of the front door 2 of the embodiment is arched; or, the top of the front door 2 is in an inclined shape with a low front part and a high back part;

further, the bottom of the front door 2 of the present embodiment is arched; or, the bottom of the front door 2 is inclined with a high front and a low back.

Further, the top of the rear door 4 of the present embodiment is arched; or, the top of the rear door 4 is in an inclined shape with a high front part and a low rear part;

further, the bottom of the rear door 4 of the present embodiment is arched; or, the bottom of the rear door 4 is inclined with a lower front and a higher rear.

In the embodiment of the invention, the top of the front door 2 is set to be arched or inclined with low front and high back, the bottom of the front door 2 is set to be arched or inclined with high front and low back, the top of the rear door 4 is set to be arched or inclined with high front and low back, and the bottom of the rear door 4 is set to be arched or inclined with low front and high back, so that rainwater is not easy to remain on the front door 2 or the rear door 4, the phenomenon of water accumulation in the secondary box body is further avoided, and the secondary box body is ensured to have a good waterproof effect.

It should be noted that, when the bottom of the front door 2 is arched or inclined with a high front and a low back, the drainage hole 211 in the first water receiving tank 21 is arranged at the middle position of the bottom of the first water receiving tank 21; when the bottom of the rear door 4 is arched or inclined with a lower front part and a higher rear part, the drain hole in the second water receiving tank is arranged in the middle of the bottom of the second water receiving tank.

As shown in fig. 1, in order to further improve the convenience of the secondary box, it is preferable that the front door 2 of the present embodiment further has a window penetrating through the front and rear surfaces thereof, and the window is connected with glass. The glass is arranged on the window of the front door 2, so that a user can observe the condition inside the cavity 11 through the window while the waterproof effect of the secondary box is ensured.

In the embodiment of the invention, the connection mode of the glass and the window can be set according to the actual use condition. In order to further simplify the structure and reduce the cost, it is preferable that the glass of the present embodiment is attached to the window in an adhesive manner.

Further, in order to firmly fix the glass on the window, it is preferable that the box of this embodiment further includes a fixing frame disposed around an edge of the glass.

Further, in order to facilitate observation of the aging state of the adhesive material between the glass and the window, it is preferable that the fixing frame of this embodiment is provided with an opening. Through set up the trompil on the mount, thereby be convenient for personnel pass through the trompil is observed glass with paste the ageing state of material between the window, consequently work as when glass has the sign that drops, personnel can in time learn in order to change.

In the embodiment of the present invention, the material of the fixing frame may be set according to actual use conditions, such as metal, and the present invention is not limited thereto.

Further, in order to reduce the influence of ultraviolet rays on devices in the cavity 11, it is preferable that the glass of this embodiment further has a protective film thereon, and the protective film has functions of ultraviolet ray protection and heat insulation. By arranging the protective film on the glass, the problem that ultraviolet rays are injected into the cavity 11 from the window to influence devices in the cavity 11 is effectively solved, and meanwhile, the glass has a heat insulation effect.

In the embodiment of the invention, the thickness of the box body can be set according to the actual use condition; in order to ensure that the secondary box body has a good waterproof effect, the thickness of the box body of the embodiment is preferably greater than or equal to 2 mm.

In the embodiment of the invention, when the aviation plug is arranged in the cavity 11, the secondary box body further comprises a rain cover, and the aviation plug is covered by the rain cover. Wherein the protection grade of the aviation plug after wiring is up to IP 67.

In the embodiment of the invention, through the arrangement, the waterproof grade of the secondary box body of the embodiment reaches IP 55.

In the embodiment of the present invention, in order to provide the secondary box with a good effect of preventing high humidity, preferably, a spacing space is provided in the box top cover 6 of the embodiment, and the height of the spacing space is greater than 20 mm. By providing the space in the tank top cover 6, the tank top cover 6 has a heat insulation effect, and moisture on the tank top cover 6 can be prevented from being transferred into the main frame 1, so that the secondary tank has a high humidity prevention effect.

In the embodiment of the present invention, in order to further improve the effect of preventing high humidity of the secondary box to ensure normal operation of the devices in the cavity 11, it is preferable that a heater and a remote control module 20 for transmitting data with a background are disposed in the cavity 11 of the embodiment, and an input end of the heater is connected to a control end of the remote control module 20. Through setting up the heater, and make the input of heater with remote control module 20's control end is connected, thereby makes can pass through the backstage with remote control module 20 remote control the work of heater, in order to control temperature in the cavity 11, and then get rid of moisture, consequently improved the high wet effect of preventing of secondary box has ensured the normal work of the device in the cavity 11.

Preferably, a sensor for measuring the humidity in the cavity 11 may be further disposed in the cavity 11 of this embodiment, and when the humidity in the cavity 11 is greater than a preset humidity threshold, the heater is controlled to heat, so as to remove moisture in the cavity 11.

In the embodiment of the invention, the number, the type and the installation position of the heaters can be set according to the actual use condition. In order to ensure that the effect of preventing high humidity can be achieved, it is preferable that the number of the heaters in the present embodiment is at least two; and the heaters are operated for a long time at low power, the power of a single heater is not higher than 30W, and the power of the heater arranged per cubic meter is not less than 60W. In addition, the heaters are uniformly distributed at the middle lower part in the cavity 11.

It should be noted that when there are higher power components such as smart components in the chamber 11, the number of heaters should be reduced appropriately. In addition, this embodiment the secondary box still can adopt the air conditioner measure cooling, and the air conditioner should evenly refrigerate.

In addition, the temperature in the cavity 11 can be controlled to-10 ℃ to 55 ℃ by the heater in the embodiment, so that the device in the cavity 11 can work under the appropriate environment.

Further, in order to further improve the effect of preventing the high humidity of the secondary box, it is preferable that a ventilation portion is provided on the outer side wall of the main frame 1 in this embodiment, and a labyrinth-shaped air duct is provided in the ventilation portion; the main frame 1 is further provided with a breathing hole communicated with the cavity 11, and the breathing hole is communicated with one end of the air channel. Through be equipped with on the main frame 1 with the breathing hole of cavity 11 intercommunication, and make the breathing hole the one end intercommunication in wind channel makes the heater during operation, can loop through the breathing hole with the wind channel will the moisture in the cavity 11 is discharged outside the main frame 1. In addition, the air channel in the ventilation part is set to be in a labyrinth shape, so that small animals or dust can be prevented from entering the cavity 11 from the air channel, a good environment in the cavity 11 is ensured, and the safety of the secondary box body is further ensured.

In the embodiment of the invention, the size of the air duct can be set according to the actual use condition. In order to ensure that moisture can be discharged through the air duct while preventing small animals or dust from entering the cavity 11 from the air duct, the diameter of the air duct of the present embodiment is preferably less than or equal to 20 mm. Accordingly, the diameter of the breathing hole is less than or equal to 20 mm.

In addition, the number and the position of the ventilation parts of the present embodiment can be set according to actual use conditions. In order to ensure that moisture in the cavity 11 can be exhausted through the air channel of the ventilation part and simplify the structure to reduce the cost, it is preferable that there are two ventilation parts in this embodiment, and the two ventilation parts are respectively disposed at diagonal positions of the top of the main frame 1; correspondingly, the number of the breathing holes is two, and the two breathing holes are respectively arranged on the diagonal positions of the top of the main frame 1.

As shown in fig. 1 and 2, in order to prevent moisture on the ground from flowing into the main frame 1 and ensure the waterproof and high humidity resistant effects of the secondary box, the secondary box of the present embodiment preferably further includes a box bracket 7 disposed at the bottom of the main frame 1.

Further, in order to reduce the moisture on the ground entering the cavity 11 and further improve the effect of preventing the secondary box from high humidity, it is preferable that the top of the box support 7 of this embodiment is provided with a blocking structure, and the blocking structure is provided with a wire inlet hole for passing a cable. Through be equipped with block structure at the top of box support 7 to isolated the moisture on ground, be in simultaneously be equipped with the entrance hole that is used for making the cable pass through on the block structure, so that the cable inlet wire passes through from the cable pit the entrance hole lets in the cavity 11, thereby reduced the moisture on ground and got into in the cavity 11, consequently further improve the high wet effect of preventing of secondary box.

In the embodiment of the present invention, a cable may be introduced into the cavity 11 by using a glan head or an aviation plug; of course, this is only one embodiment, and the present invention is not limited thereto. In addition, the material of the blocking structure may be set according to the actual use condition, and preferably, the material of the blocking structure of this embodiment is a polymer material or waterproof mud.

Further, as shown in fig. 2, in order to further insulate moisture on the ground, it is preferable that the bottom of the tank body support 7 of this embodiment is provided with a partition plate, and a ventilation fence 71 is further provided on a side wall of the tank body support 7. The partition board is arranged at the bottom of the box body support 7, so that moisture on the ground is further isolated, and small animals can be prevented from entering the box body support 7, so that the safety of the secondary box body is ensured. Meanwhile, the ventilation fence 71 is arranged on the side wall of the tank bracket 7, so that moisture in the tank bracket 7 can be discharged through the ventilation fence 71, thereby further improving the high-humidity prevention effect of the secondary tank.

In the embodiment of the present invention, the height of the box body support 7 and the ventilation area of the ventilation fence 71 can be set according to actual use conditions. In order to secure the effect of preventing the high humidity of the secondary tank, it is preferable that the height of the tank bracket 7 in the present embodiment is greater than or equal to 200 mm. The ventilation area of the ventilation fence 71 is greater than or equal to 40% of the area of the surface on which the ventilation fence 71 is located.

In the embodiment of the invention, through the arrangement, the daily average humidity in the secondary box body is not higher than 65%.

As shown in fig. 2, in order to avoid the problem that the secondary box body is damaged due to the influence of typhoon weather, so that the secondary box body has a windproof effect, thereby ensuring the normal use of the secondary box body, preferably, the box body of the present embodiment further includes a first windproof latch 8, the first windproof latch 8 includes a first clamping portion and a second clamping portion, the first clamping portion is disposed on the outer side wall of the main frame 1, and the second clamping portion is disposed on the outer side wall of the front door 2; when the qianmen 2 laminate in when the main frame 1, second joint portion with first joint portion joint.

In the embodiment of the invention, the first windproof lock catch 8 comprising the first clamping part and the second clamping part is arranged, and when the front door 2 is attached to the main frame 1, the second clamping part is clamped with the first clamping part to fix the front door 2 and the main frame 1, so that the problem that the front door is easily blown off due to the influence of typhoon weather on the secondary box body is effectively prevented, and the reliability of the secondary box body is improved.

Preferably, one end of the first clamping portion of the present embodiment is connected to the outer side wall of the main frame 1, the other end of the first clamping portion is provided with a third clamping groove, and the second clamping portion is provided with a first clamping column; then the process of the first step is carried out,

the second joint portion with first joint portion joint specifically is: the first clamping column is clamped in the third clamping groove.

Further, the secondary box body of this embodiment further includes a second windproof locking buckle, the second windproof locking buckle includes a third clamping portion and a fourth clamping portion, the third clamping portion is disposed on the outer side wall of the main frame 1, and the fourth clamping portion is disposed on the outer side wall of the back door 4; when the back door 4 is attached to the main frame 1, the fourth clamping portion is clamped with the third clamping portion.

In the embodiment of the invention, the second windproof lock catch comprising the fourth clamping part and the third clamping part is arranged, and when the rear door 4 is attached to the main frame 1, the fourth clamping part and the third clamping part are clamped to fix the rear door 4 and the main frame 1, so that the problem that the rear door is easily blown off due to the influence of typhoon weather on the secondary box body is effectively prevented, and the reliability of the secondary box body is further improved.

Preferably, one end of the third clamping portion of the present embodiment is connected to the outer side wall of the main frame 1, the other end of the third clamping portion is provided with a fourth clamping groove, and the fourth clamping portion is provided with a second clamping column; then the process of the first step is carried out,

fourth joint portion with third joint portion joint specifically is: the second clamping column is clamped in the fourth clamping groove.

Further, the secondary box of the present embodiment further includes an internal component, and the internal component is disposed in the cavity 11; the internal components comprise all secondary elements supporting the normal working function of the circuit breaker.

Specifically, as shown in fig. 5, in order to simplify the structure of the secondary box, preferably, a control panel 9, a circuit board 10 and a remote control module 20 are further disposed in the cavity 11 of this embodiment, a circuit breaker control module 101, a disconnecting switch control module 102, a grounding switch control module 103 and a signal processing module 104 are disposed on the circuit board 10, and a control end of the control panel 9 is respectively connected to a first input/output end of the circuit breaker control module 101, a first input/output end of the disconnecting switch control module 102, a first input/output end of the grounding switch control module 103 and a first input/output end of the signal processing module 104; a second input/output end of the circuit breaker control module 101, a second input/output end of the disconnecting switch control module 102, a second input/output end of the grounding switch control module 103, and a second input/output end of the signal processing module 104 are respectively connected with a control end of the remote control module 20.

As can be appreciated, the circuit breaker control module 101 integrates a closing circuit, an opening circuit, an anti-jump circuit, a non-synchronous protection circuit, an SF6 blocking signal and a hydraulic pressure reduction blocking circuit of the circuit breaker. The isolating switch control module 102 integrates a closing loop and an opening loop of the isolating switch. The grounding switch control module 103 integrates a closing loop and an opening loop of the grounding switch. The signal processing module 104 integrates alarm signal acquisition, temperature and humidity signal acquisition and live display signal acquisition, and acquisition of an ES control module self-check signal, a DS control module self-check signal and a CB control module self-check signal; the embodiment of the invention adds the anti-misoperation loop, can effectively protect the motor and simultaneously solves the problem of misoperation possibly caused by the memory function of the operation loop.

In the embodiment of the present invention, by connecting the control terminal of the control panel 9 to the first input/output terminal of the circuit breaker control module 101, the first input/output terminal of the disconnecting switch control module 102, the first input/output terminal of the grounding switch control module 103, and the first input/output terminal of the signal processing module 104, respectively, a person can control the circuit breaker control module 101, the disconnecting switch control module 102, the grounding switch control module 103, and the signal processing module 104 through the control panel 9; also, the states of the circuit breaker control module 101, the disconnecting switch control module 102, the earthing switch control module 103, and the signal processing module 104 may be displayed through the control panel 9. In addition, by connecting the second input/output terminal of the circuit breaker control module 101, the second input/output terminal of the disconnecting switch control module 102, the second input/output terminal of the earthing switch control module 103 and the second input/output terminal of the signal processing module 104 with the control terminal of the remote control module 20, personnel can remotely control the circuit breaker control module 101, the disconnecting switch control module 102, the earthing switch control module 103 and the signal processing module 104 through the background and the remote control module 20 and receive the states returned by the circuit breaker control module 101, the disconnecting switch control module 102, the earthing switch control module 103 and the signal processing module 104.

It should be noted that the inside of the existing secondary box body relates to a closing loop, an opening loop, an anti-jumping loop, a different-phase protection loop, an SF6 blocking signal and a hydraulic pressure reduction blocking loop of the circuit breaker; a closing loop and an opening loop of the isolating switch and the grounding switch; and loops such as alarm signal acquisition, temperature and humidity signal acquisition, electrified display signal acquisition, and acquisition of an ES control module self-checking signal, a DS control module self-checking signal and a CB control module self-checking signal. Every return circuit relates to quadratic element devices such as relay, contactor, and prior art connects the components and parts in the secondary box through the electric wire, realizes the function in return circuit. In the embodiment of the invention, the circuit breaker control module 101, the disconnecting switch control module 102, the grounding switch control module 103 and the signal processing module 104 are integrated on the circuit board 10, so that electric wire connection is not needed, the attractiveness of a wire harness inside the cavity 11 is improved, and the wiring process among elements is simplified; moreover, when the components in the cavity 11 have problems, the replacement time of the components can be shortened, and the replacement operation of the components is simplified, so that the problem of long-time power failure caused by replacement of the components is effectively solved.

Further, in order to facilitate the connection between the circuit breaker control module 101, the disconnecting switch control module 102, the grounding switch control module 103 and the signal processing module 104 and the remote control module 20, preferably, a hot plug interface is disposed on the remote control module 20 in this embodiment; then, a second input/output end of the circuit breaker control module 101, a second input/output end of the disconnecting switch control module 102, a second input/output end of the grounding switch control module 103, and a second input/output end of the signal processing module 104 are respectively connected to a control end of the remote control module 20, specifically:

a second input/output end of the circuit breaker control module 101, a second input/output end of the disconnecting switch control module 102, a second input/output end of the grounding switch control module 103, and a second input/output end of the signal processing module 104 are respectively connected to the hot plug interface.

In the embodiment of the present invention, in order to further simplify the structure of the secondary box, it is preferable that a current transformer 301, a voltage transformer 302, an auxiliary circuit 303, and a hard-contact interlock circuit 304 are further disposed in the cavity 11 of this embodiment, an output terminal of the current transformer 301 and an output terminal of the voltage transformer 302 are respectively connected to an input terminal of the remote control module 20, and a first input/output terminal of the auxiliary circuit 303 and a first input/output terminal of the hard-contact interlock circuit 304 are respectively connected to a control terminal of the remote control module 20.

It should be noted that the auxiliary circuit is a circuit of auxiliary equipment of the cavity 11, such as a circuit of a lighting device and a heater; by respectively connecting the output end of the current transformer 301 and the output end of the voltage transformer 302 with the input end of the remote control module 20, the information detected by the current transformer 301 and the voltage transformer 302 can be received by the remote control module 20 and transmitted to the background, so that people can know corresponding information; in addition, by connecting the first input/output terminal of the auxiliary loop 303 and the first input/output terminal of the hard-wired interlock loop 304 to the control terminals of the remote control module 20, respectively, it is possible for a person to remotely control the auxiliary loop 303 and the hard-wired interlock loop 304 through the back office and the remote control module 20 and receive the returned states of the auxiliary loop 303 and the hard-wired interlock loop 304.

Further, in order to facilitate connection of the current transformer 301, the voltage transformer 302, the auxiliary circuit 303, and the hard-wired interlocking circuit 304 to the remote control module 20, respectively, it is preferable that a terminal strip is provided on the remote control module 20 of this embodiment; then the process of the first step is carried out,

the output end of the current transformer 301 and the output end of the voltage transformer 302 are respectively connected to the input end of the remote control module 20, and the first input/output end of the auxiliary circuit 303 and the first input/output end of the hard-contact interlock circuit 304 are respectively connected to the control end of the remote control module 20, specifically:

the output of the current transformer 301, the output of the voltage transformer 302, a first input/output of the auxiliary circuit 303 and a first input/output of the hard-wired interlock circuit 304 are connected to the terminal block, respectively.

In the embodiment of the present invention, the internal components further include a temperature and humidity sensor for detecting temperature and humidity, and an output end of the temperature and humidity sensor is connected to an input end of the remote control module 20, and is configured to transmit the detected temperature and humidity to the background;

Wherein, the data transmission format in the secondary box supports the networking. Of course, this is only one embodiment and the invention is not limited thereto.

In summary, the invention provides a secondary box, which comprises a box body, wherein the box body comprises a main frame 1 and a front door 2, and one side of the front door 2 is rotatably connected with one side of the front surface of the main frame 1; a cavity 11 is arranged in the main frame 1, and a first opening 12 communicated with the cavity 11 is arranged on the front surface of the main frame 1; a first diversion trench 13 arranged around the first opening 12 is further arranged on the front surface of the main frame 1, a first water receiving trench 21 for receiving water flowing out of the first diversion trench 13 is arranged at the bottom of the front door 2, and a water drainage hole 211 is arranged in the first water receiving trench 21; the secondary main frame further comprises a first sealing strip 3, a first sealing groove 22 is formed in the inner side wall of the front door 2, and one end of the first sealing strip 3 is clamped in the first sealing groove 22; one surface of the first diversion trench 13 away from the main frame 1 extends along the center line direction of the first opening 12 to form a first sealing surface 131; when the front door 2 is attached to the main frame 1, the other end of the first weather strip 3 is pressed against the first sealing surface 131. The first diversion trench 13 is arranged on the front surface of the main frame 1, and the first water receiving trench 21 with the drain hole 211 is arranged at the bottom of the front door 2, so that water flowing onto the main frame 1 can flow into the first water receiving trench 21 through the first diversion trench 13 and is discharged through the drain hole 211 in the first water receiving trench 21, thereby effectively preventing water flowing onto the box body from flowing into the box body, and preventing the phenomenon of water accumulation on the secondary box body; simultaneously, through setting up first sealing strip 3, and make 2 laminating in of qianmen during main frame 1, the one end joint of first sealing strip 3 is in the first seal groove 22 of qianmen, just the other end crimping of first sealing strip 3 is in on the first sealed face 131, thereby has realized qianmen 2 with good sealed effect between the main frame 1 has further avoided the outside rivers of secondary box flow into in the box, make the secondary box has good water-proof effects, and then can prevent effectively that the secondary box from taking place the phenomenon of rainwater seepage, consequently prolonged the life of secondary box is short to electric power system's security has been guaranteed. In addition, the secondary box body provided by the embodiment of the invention has good high-humidity prevention effect and wind prevention effect, and can effectively deal with outdoor environmental conditions such as high temperature, high humidity, salt mist, wind, rain and the like, so that the service life of the secondary box body is greatly prolonged, and the use safety of the secondary box body is ensured.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The secondary box body is characterized by comprising a box body, wherein the box body comprises a main frame and a front door, and one side of the front door is rotatably connected with one side of the front surface of the main frame; a cavity is arranged in the main frame, and a first opening communicated with the cavity is arranged on the front surface of the main frame; the front surface of the main frame is also provided with a first diversion trench arranged around the first opening, the bottom of the front door is provided with a first water receiving tank for receiving water flowing out of the first diversion trench, and a drain hole is arranged in the first water receiving tank;

2. The secondary container according to claim 1, wherein the container further comprises a rear door rotatably coupled at one side to a rear surface of the main frame, the rear surface of the main frame being provided with a second opening communicating with the cavity; a second diversion trench arranged around the second opening is further arranged on the rear surface of the main frame, a second water receiving trench used for receiving water flowing out of the second diversion trench is arranged at the bottom of the rear door, and a drain hole is formed in the second water receiving trench;

the box body further comprises a second sealing strip, a second sealing groove is formed in the inner side wall of the rear door, and one end of the second sealing strip is clamped in the second sealing groove; one surface of the second diversion groove, which is far away from the main frame, extends along the direction of the center line of the second opening to form a second sealing surface; when the back door is attached to the main frame, the other end of the second sealing strip is in press-connection with the second sealing surface.

3. The secondary box body of claim 2, further comprising a box top cover disposed on the top of the main frame, wherein the front end of the box top cover protrudes from the front door, and the front end of the box top cover is inclined with a lower front and a higher rear;

4. The secondary box of claim 3 wherein a spacing space is provided in the top box cover, the spacing space having a height greater than 20 mm.

5. The secondary box of any one of claims 1 to 4, wherein a heater and a remote control module for transmitting data to a background are arranged in the cavity, and an input end of the heater is connected with a control end of the remote control module;

6. The secondary box according to claim 5, wherein a ventilation part is provided on an outer side wall of the main frame, and a labyrinth-shaped air duct is provided in the ventilation part; the main frame is further provided with a breathing hole communicated with the cavity, and the breathing hole is communicated with one end of the air channel.

7. The secondary box body according to any one of claims 1 to 4, wherein the box body further comprises a box body support arranged at the bottom of the main frame, a blocking structure is arranged at the top of the box body support, and a wire inlet hole for allowing a cable to pass through is formed in the blocking structure; the bottom of the box body support is provided with a partition board, and a ventilation fence is further arranged on the side wall of the box body support.

8. The secondary box according to any one of claims 1 to 4, wherein the box further comprises a first windproof locking buckle, the first windproof locking buckle comprises a first clamping portion and a second clamping portion, the first clamping portion is arranged on the outer side wall of the main frame, and the second clamping portion is arranged on the outer side wall of the front door; when the front door is attached to the main frame, the second clamping part is clamped with the first clamping part;

9. The secondary tank of any of claims 1-4, further comprising an internal component disposed within the cavity; the internal components comprise all secondary elements supporting the normal working function of the circuit breaker.

10. The secondary box body of claim 9, wherein the internal components specifically include a control panel, a circuit breaker control module, a disconnector control module, a ground switch control module, a signal processing module, and a remote control module, and a control end of the control panel is connected to a first input/output end of the circuit breaker control module, a first input/output end of the disconnector control module, a first input/output end of the ground switch control module, and a first input/output end of the signal processing module, respectively; a second input/output end of the circuit breaker control module, a second input/output end of the disconnecting switch control module, a second input/output end of the grounding switch control module and a second input/output end of the signal processing module are respectively connected with a control end of the remote control module;

the internal components further comprise a current transformer, a voltage transformer, an auxiliary loop and a hard-contact interlocking loop, wherein the output end of the current transformer and the output end of the voltage transformer are respectively connected with the input end of the remote control module, and the first input/output end of the auxiliary loop and the first input/output end of the hard-contact interlocking loop are respectively connected with the control end of the remote control module;

the internal components further comprise a temperature and humidity sensor for detecting temperature and humidity, and the output end of the temperature and humidity sensor is connected with the input end of the remote control module and used for transmitting the detected temperature and humidity to the background; wherein, the data transmission format in the secondary box supports the networking;

11. The secondary tank of any one of claims 1 to 4, wherein the secondary tank has a water resistance rating of IP 55; the thickness of the box body is not less than 2 mm; the daily average humidity of the secondary box body is not higher than 65%; the temperature in the cavity is controlled to be-10-55 ℃.