CN209044127U - High-density optical-fiber wiring box unit - Google Patents
High-density optical-fiber wiring box unit Download PDFInfo
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- CN209044127U CN209044127U CN201822117080.5U CN201822117080U CN209044127U CN 209044127 U CN209044127 U CN 209044127U CN 201822117080 U CN201822117080 U CN 201822117080U CN 209044127 U CN209044127 U CN 209044127U
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Abstract
The utility model provides a kind of high-density optical-fiber wiring box unit, which is characterized in that the high-density optical-fiber wiring box unit includes: cabinet comprising surrounds the main body formed by multiple cover boards, the main body rear and front end respectively has opening；At least one laminate, stackable to be arranged in the cabinet, the laminate slideably can be removed cabinet from front opening or send back in cabinet；At least one fiber distribution module, the optical fiber for will introduce from rear end is drawn from front end, and the fiber distribution module includes at least one module clamping part, and the laminate includes at least one laminate clamping part corresponding with the module clamping part；The high-density optical-fiber wiring box unit is configured to, by being aligned the module clamping part and corresponding laminate clamping part and pressing the fiber distribution module towards the lamina surface, so that the fiber distribution module and the laminate are closely joined together by snap fit.
Description
Technical field
The utility model relates to fiber box fields, and specifically, the utility model designs a kind of high-density optical-fiber wiring
Box unit.
Background technique
Due to Internet communication technology and the rapid growth of mobile communication technology, optical fiber as key data communication media,
It is widely used in information communication system.A large amount of fiber box, and future have been mounted in data center machine room
More and more fiber box are needed to realize the switching of optical fiber.More and more high-end data center projects require optical fiber to match
Line case product is while having high density characteristic, easy to maintain and management.
Specifically, there are the following problems for traditional fiber wiring at present.
Firstly, traditional fiber distributing cabinet housing interior volume utilization rate is lower, it is only able to achieve the maximum fiber of 96 core of 1RU
Density.When traditional fiber distributing cabinet is designed as 144 core fibre density of 1RU, fiber box front optical patchcord is easy to mutual
Winding, increase, removal and the position change difficulty of optical patchcord increase, and need more management service times and cost.Currently
Some products for being capable of providing 1RU144 core fibre density in market usually require that user has small ruler using its dedicated custom
The special fiber wire jumper of very little optical fiber connector, Products Compatibility are poor.Traditional fiber distributing cabinet generallys use the light of stock size
Fine component, the panel size for accommodating fiber optic component and device is larger, and box house and front space utilization rate are lower, therefore in 1RU
It is only able to achieve 96 core maximum fiber density in cabinet space, is unable to satisfy growing data center's optical fiber connection requirement.And
And current main fiber termination method includes fused fiber splice and optical fiber pre-terminated, conventional fiber distributing cabinet is only capable of supporting wherein
A certain method, products application flexibility are poor.
Utility model aims to solve some main problems that fiber box faces in high-density applications, examples
As high-density optical-fiber front end can managerial ability, support a variety of optic fibre switching modes, high density light carried out using traditional fiber wire jumper
Fine upgrading etc..
Utility model content
To solve the above problems, the utility model provides a kind of modularization hierachical structure high-density optical-fiber distributing cabinet, side
User is helped to realize high-density optical-fiber installation management and maintenance,
The utility model proposes a kind of high-density optical-fiber wiring box unit, the high-density optical-fiber wiring box unit includes:
Cabinet comprising surround the main body formed by multiple cover boards, the main body rear and front end respectively has opening；At least one laminate,
Stackable to be arranged in the cabinet, the laminate slideably can be removed cabinet from front opening or send back to cabinet
In；At least one fiber distribution module, the optical fiber for will introduce from rear end is drawn from front end, and the fiber distribution module
Including at least one module clamping part, and the laminate includes at least one laminate buckle corresponding with the module clamping part
Portion；The high-density optical-fiber wiring box unit is configured to, by the way that the module clamping part and corresponding laminate clamping part to be aligned
And the fiber distribution module is pressed towards the lamina surface so that the fiber distribution module and the laminate by
Snap fit is closely joined together.
According to a preferred embodiment, the fiber distribution module respectively has at least one module card on its two sides side
Buckle.
According to another preferred embodiment, the fiber distribution module on its two sides side respectively have there are two be spaced apart
Module clamping part, they cooperate with two laminate fasteners of corresponding position on the laminate respectively.
According to a preferred embodiment, the laminate includes at least one laminate buckle for being fixedly connected to the laminate
Part, the laminate fastener have at least one laminate clamping part；Also, module clamping part and the laminate clamping part matched
One of reeded form of tool, another raised form.
According to another preferred embodiment, the laminate fastener respectively has a laminate clamping part in its two sides, so as to
It is clasped respectively with them simultaneously between two adjacent fiber distribution modules.
According to preferred embodiment, the height of a little higher than fiber distribution module of face height of the laminate fastener is used
In bearing upper layer laminate.
According to preferred embodiment, the fiber distribution module includes pedestal and the upper cover that can dismantle from pedestal, and institute
Stating fiber distribution module is 8 core fibre Wiring modules or 12 core fibre Wiring modules.
According to preferred embodiment, there are four 12 core fibre Wiring modules or six 8 core fibres to match for installation on each laminate
Wire module.
According to preferred embodiment, the fiber distribution module supports predispersed fiber termination types and fused fiber splice type.
According to preferred embodiment, when selecting fused fiber splice type, fused fiber splice is equipped in the fiber distribution module
Protective device, to guide and protect optical fiber.
According to preferred embodiment, the front end of the laminate is equipped with multiple outwardly directed protruding portions, in the protruding portion
On be equipped with optical patchcord management ring.
According to preferred embodiment, the front end of the laminate is equipped with multiple flangings for protruding from lamina surface certain altitude
Portion, to be compatible with the fiber jumper connector of different size.
According to preferred embodiment, the cabinet includes: U-shaped structure, by two side cover plates that the cabinet front is arranged in
It is formed with front lower cover plate；Front upper cover plate is arranged in the cabinet front；Rear upper plate is arranged at the cabinet rear portion；
Rear portion lower cover plate is slidably disposed on the cabinet rear portion to extract out from cabinet, and can close the box back and open
At least part of mouth；Front panel is arranged in the cabinet front end and can close at least one of the cabinet front opening
Point.
According to preferred embodiment, the high-density optical-fiber wiring box unit further includes each is arranged in outside cabinet two sides
Mounting bracket.
This programme is to provide high-density optical-fiber distributing cabinet solution inside data center, realizes each standard cabinet space
144 core fibre packing density management service ability of (1RU) cabinet space, provides optical fiber pre-terminated and fused fiber splice scheme, in height
Under density of optical fibers environment, distributing cabinet also need to have it is good can operational capacity, being capable of seamless reply data center Long-and Medium-term Development
The upgrading of bring fibre system and change request.In addition, the modularization layered structure of this programme and removable rear portion cabinet knot
Structure allows each laminate and the fiber distribution module that is fixed thereon to take out and be packed into, thus save the service time and at
This.
Detailed description of the invention
Above and other feature and advantage of the utility model will become through the following detailed description taken in conjunction with the accompanying drawings more
Add obvious, and the following description and drawings being given for example only property purpose, rather than limits the utility model in any way
Range, in which:
Fig. 1 is the high-density optical-fiber distributing cabinet 1RU model stereoscopic schematic diagram according to the utility model, and cabinet is in closed
State；
Fig. 2 is high-density optical-fiber distributing cabinet 1RU model stereoscopic schematic diagram according to the present utility model corresponding with Fig. 1,
Cabinet is in an open state；
Fig. 3 is according to the laminate of the utility model and 12 core fibre Wiring module schematic diagram being mounted on laminate；
Fig. 4 is according to the laminate of the utility model and 8 core fibre Wiring module schematic diagram being mounted on laminate；
Fig. 5 is to be illustrated according to the three-dimensional of 12 core fibre Wiring modules in high-density optical-fiber distributing cabinet provided by the utility model
Figure, both ends are equipped with fiber optic cable；
Fig. 6 is to be illustrated according to the three-dimensional of 8 core fibre Wiring modules in high-density optical-fiber distributing cabinet provided by the utility model
Figure, both ends are equipped with fiber optic cable；
Fig. 7 is to be buckled according to 12 core fibre Wiring modules in high-density optical-fiber distributing cabinet provided by the utility model and two sides
The stereoscopic schematic diagram of part；
Fig. 8 is the stereoscopic schematic diagram of fused fiber splice protective device.
Reference signs list
1- cabinet
10- front panel
The front 11- upper cover plate
The rear portion 12- lower cover plate 14
13-U shape structure
The rear portion 14- lower cover plate
15- mounting bracket
16- slide outside track
2- laminate 2
21- laminate fastener
211- laminate clamping part
22- protruding portion
23- internal slide track
24- flap
3-12 core fibre Wiring module
4-8 core fibre Wiring module
30,40- pedestal
31,41- upper cover
301,302,401,402- module clamping part
32- fused fiber splice protective device
33- fiber coupler
34- fiber jumper connector
A- multifiber cable
B- optical patchcord
R- optical patchcord manages ring
Specific embodiment
Aforementioned and other technology contents, feature and technical effect in relation to the utility model refer to attached drawing in following cooperation
It can clearly be presented in the detailed description of embodiment.Explanation includes various specific details to help the understanding below, but this
A little details should be considered as being only exemplary.In addition, for clarity and brevity, may omit to well known function and structure
The description made.
Through the description and claims of present specification, word " comprising " and modification mean " including but unlimited
In ", and be not intended to exclude other component, entirety or step.It should be understood that singular " one ", "one" and "the" packet
Reference containing plural number, unless context clearly separately has miscellaneous stipulations.In the present invention, statement "or" includes to enumerate together
Word any or all combination.
In addition, this may mean that it is connected directly to other yuan when element is mentioned as " connected " to another element
Part, it is also possible to which there are intermediary elements.
The orientation such as "upper", "lower", "left", "right", "front", "rear" for mentioning in text word is only used for the exhibition relative to attached drawing
Show expression relative positional relationship, after the absolute position for being described object changes, then relative positional relationship may also correspondingly change
Become.
With reference to the accompanying drawing 1~6 illustrate the utility model high-density optical-fiber distributing cabinet specific structure and working principle.
High-density optical-fiber distributing cabinet 1RU model stereoscopic schematic diagram as illustrated in fig. 1 and 2, high-density optical-fiber wiring box unit
Including cabinet 1, one or more being arranged in cabinet 1 is used to install the laminate 2 of fiber distribution module, and laminate 2 can be relative to
Cabinet 1 individually slides taking-up and one or more fiber distribution module 3.
Cabinet 1 includes that the main body formed is surrounded by multiple cover boards, and the main body rear and front end respectively has opening.With reference to Fig. 1,
Cabinet 1 includes: U-shaped structure 13, is made of two side cover plates and front lower cover plate that cabinet front is arranged in；Front upper cover plate 11,
It is arranged in cabinet front；Rear upper plate 12 is arranged at the cabinet rear portion；Rear portion lower cover plate 14, is slidably disposed on case
Body rear portion to be extracted out from cabinet, and can closed box open rearward end at least part；Front panel 10 is arranged before cabinet
Hold and can closed box front opening at least part.This design of rear portion lower cover plate 14 so that operator operation
Become convenient with maintenance.Optical fiber distributing box unit further includes each mounting bracket 15 being arranged in outside cabinet two sides.This reality
With the novel structure focused on inside high-density optical-fiber distributing cabinet, the body structure of diagram is only a kind of preferred embodiment, case
Body can of course use other common designs.
Laminate 2 is arranged in cabinet 1, and slideably can be removed cabinet from front opening or send back to cabinet
In.Laminate 2 has the bottom plate 20 for installing fiber distribution module, is mounted on the internal slide track 23 of bottom plate two sides, installs
Fiber distribution module fixed point 21 on bottom plate is mounted on the cable-management ring 22 of bottom plate front end.Installation can be laminated in laminate 2
In fiber box, the inside of 1 liang of side cover plate of cabinet is equipped with slide outside track 17, and the two sides of laminate 2 have matched
The internal slide track 23 of internal slide track 23, laminate 2 can be mobile relative to the slide outside track 17 of cabinet 1, thus real
Existing laminate 2 and all components mounted thereto can be relative to smoothly moving inside and outside cabinet 1.Slide outside track 17 is equipped with two
A stop dog component, and internal slide track 23 is set there are two corresponding stop member, stop dog component and stop member cooperating,
So as to realize that the specific position in cabinet 1 of laminate 2 stops and fixed.As shown in figure 3, the front end of laminate 2 also
Equipped with protruding portion 22 that is multiple protruding and bending, protruding portion substantially has the form of tab, installs on the protruding portion
There is optical patchcord to manage ring R, can support and store optical patchcord.
The delamination modularization fiber unit of the innovation of the utility model designs, and each layer of modular optical fiber unit can phase
Fiber box is slid back and forth, multiple fiber distribution modules, each optical fiber are installed on each layer of modular optical fiber unit
Wiring module can be freely disassembled or install.Therefore increase, removal and the position change operation of optical fiber and optical patchcord, not by phase
Influence and interference between adjacent component reduce management service time and cost to save operation difficulty and operating time.
One or more fixed point is provided on laminate 2, fixed point is for example fixedly connected to the bottom of laminate by fastener
Plate 20.Fiber distribution module 3 can be fixed on laminate 2 by each fixed point, and can take out fiber distribution module when needed.
In a preferred embodiment, fixed point uses the form of the fastener 21 of diagram.With reference to Fig. 3, laminate 2 is equipped with one or more
Laminate fastener 21, laminate fastener has at least one laminate clamping part 211, for being locked at multiple fiber distribution modules
On laminate 2, fiber distribution module 3 relative to laminate 2 it is possible thereby to mount and dismount.
The optical fiber that fiber distribution module is used to introduce from box back is drawn from cabinet front end, preferred illustrated embodiment
In, multifiber cable A is introduced from rear end and is stretched out with branch optical fiber wire jumper B from front end.The utility model uses modular unit
Design supports two kinds of optical fiber distribution frame with outside plant solutions of 8 cores or 12 cores, fiber distribution module to can be 12 core fibre shown in Fig. 3 and match
Wire module 3 or 8 core fibre Wiring module 4 shown in Fig. 4, can install that there are four 12 core fibre Wiring modules on each laminate 2
Or six 8 core Wiring modules.
Fiber distribution module supports predispersed fiber termination types and fused fiber splice type, supports welding optic fibre function.It is selecting
Fused fiber splice protective device 32 (Fig. 8) can be installed when fused fiber splice type, in fiber distribution module additional, it can be with welding multi-core optical
Fibre can guide, fix and protect optical fiber.It, can be in a box body using fused fiber splice and optical fiber pre-terminated integrated design
It is internal to support fused fiber splice and optical fiber pre-terminated application, product that answer by fused fiber splice and optical fiber pre-terminated of flexible conversion simultaneously
With.
With reference to Fig. 5, by taking 12 core fibre Wiring modules 3 as an example comprising pedestal 30 and the upper cover 31,12 that can be dismantled from pedestal
Core fibre Wiring module 3 respectively has at least one module clamping part 301, in preferred illustrated embodiment, light on its two sides side
Fine Wiring module 3 respectively has that there are two module clamping parts 301 and 302 spaced apart on its two sides side, respectively with phase on laminate 3
Two laminate fasteners 21 at position are answered to cooperate, so that module is more reliably fixed.Similarly, as shown in fig. 6,8 core light
Fine Wiring module 4 includes pedestal 40 and can respectively have a module buckle on its two sides side from the upper cover 41 of pedestal disassembly
Portion 401, in preferred illustrated embodiment, 8 core fibre Wiring modules 4 respectively have that there are two module cards spaced apart on its two sides side
Buckle 401 and 402.
As described above, fiber distribution module includes at least one module clamping part, and laminate includes and module clamping part phase
At least one laminate clamping part answered, by by module clamping part and the alignment of corresponding laminate clamping part and by optical fiber distributing mould
Block is pressed towards lamina surface, so that together with fiber distribution module and laminate be closely attached by snap fit.
Preferably, one laminate clamping part 211 is respectively set in 21 two sides of laminate fastener, is detailed in Fig. 7, such laminate card
Fastener 21 can cooperate with two adjacent fiber distribution modules, further increase space utilization rate on laminate, overall structure is more
Step up to gather.
It is further preferred that the height of a little higher than fiber distribution module 3 of the face height of laminate fastener 21, to can also rise
To the effect of bearing upper layer laminate.Multiple laminate fasteners 21 can be set between adjacent fiber distribution module, such as Fig. 3
Or optical fiber fit module shown in Fig. 4 front end or back-end location.
The reeded form of one of tool of module clamping part and the laminate clamping part matched, another has protrusion
Form.In embodiment shown in the drawings, module clamping part is the pin in the prominent extension in fiber distribution module box body side, and
Laminate clamping part is that the upward card slot of laminate fastener upper opening is arranged in, and when module is pressed and is installed on laminate, card slot is connect
Pin is received then to lock.It is understood that module clamping part is also possible to the groove being open towards laminate, and laminate clamping part
For the protrusion extended prominent on laminate fastener.
Certainly, it can also be not limited to illustrate using other snap fitting types between fiber distribution module and laminate
And mode above-mentioned.For example, grab is arranged in fiber distribution module lower surface, has in the corresponding position of laminate and match with it
The hole of conjunction is locked by the cooperation in grab and hole during installation.
Above-specified high density optical fiber distributing box unit has standard cabinet space (1RU), and three layers of setting is preferably stacked in cabinet
Laminate.It is easy to imagine, the high-density optical-fiber distributing cabinet of the 2RU and 4RU of optimization can also be provided, structure is 1RU cabinet and interior
The superposition of portion's components.
With reference to Fig. 3, the application devises compact optical fiber coupler 33, and outer dimension is less than common fiber coupler,
Thus reduce the size of fiber distribution module.Due to designing using compact small size fiber optic component and device, receiving light is reduced
The panel size of fine component greatly improves the space utilization rate of box house, therefore is able to achieve in 1RU cabinet space
144 core maximum fiber density can satisfy growing data center's optical fiber connection requirement.
The front end of laminate is designed with part flanging, as shown in figure 3, flap 24 protrudes from lamina surface certain altitude,
Space has been reserved for the fiber jumper connector 34 of different size, for importing the conventional fiber jumper coupler of larger size,
Fiber box therefore Products Compatibility with higher.
In addition, special optimization design has also been made in the fiber jumper connector for normal size, optical fiber jump is significantly reduced
The size of wiring connector, especially height dimension.
The scheme of the application for optical patchcord both ends connector size without particular/special requirement, being capable of compatible conventional type
The fiber jumper connector of (common LC type), to improve the Products Compatibility of fiber box.
The scheme of the application can realize every 144 core fibre packing density of 1RU cabinet space for data center user.Relatively
It is only able to achieve the optical fiber packing density of every 1RU cabinet space 72-96 core in traditional fiber distributing cabinet product, the cabinet of this programme is empty
Between utilization rate can be substantially improved 50% to 100%, to save cost, investment reduction.
The above is only the exemplary embodiment of the utility model, the protection model rather than limited the present invention
It encloses, the protection scope of the utility model is determined by the attached claims.One of ordinary skill in the art will appreciate that
It, can be to described herein various in the case where without departing substantially from the scope of the utility model as defined by appended claims
Embodiment makes changes and improvements.In addition, for clarity and brevity, may omit and be retouched to well known function and construction
It states.
Finally, it is also to be appreciated that certain technical characteristics in embodiment may for solving specific technical problem
Be not required in that, so as to without or omit solution or technical side of these technical characteristics without influence technique problem
The formation of case；Moreover, the feature of one embodiment, element and/or function can with the features of other one or more embodiments,
Element and/or function be suitably combined with each other, combination perhaps cooperation unless the combination, combination or cooperation be not obvious implementable.
Claims (14)
1. a kind of high-density optical-fiber wiring box unit, which is characterized in that the high-density optical-fiber wiring box unit includes:
Cabinet comprising surround the main body formed by multiple cover boards, the main body rear and front end respectively has opening；
At least one laminate, stackable to be arranged in the cabinet, the laminate can be slideably removed from front opening
Cabinet sends back in cabinet；
At least one fiber distribution module, the optical fiber for will introduce from rear end is drawn from front end, and the optical fiber distributing mould
Block includes at least one module clamping part, and the laminate includes at least one laminate buckle corresponding with the module clamping part
Portion；
The high-density optical-fiber wiring box unit is configured to, by the way that the module clamping part and corresponding laminate clamping part to be aligned
And the fiber distribution module is pressed towards the lamina surface so that the fiber distribution module and the laminate by
Snap fit is closely joined together.
2. high-density optical-fiber wiring box unit according to claim 1, which is characterized in that the fiber distribution module is at it
Respectively there is at least one module clamping part on the side of two sides.
3. high-density optical-fiber wiring box unit according to claim 2, which is characterized in that the fiber distribution module is at it
Respectively have on the side of two sides there are two module clamping part spaced apart, their two layers with corresponding position on the laminate respectively
The cooperation of board fastener.
4. high-density optical-fiber wiring box unit according to claim 1, which is characterized in that the laminate includes fixedly connecting
It is connected at least one laminate fastener of the laminate, the laminate fastener has at least one laminate clamping part；
Also, the reeded form of one of tool of module clamping part and the laminate clamping part matched, another is with convex
The form risen.
5. high-density optical-fiber wiring box unit according to claim 4, which is characterized in that the laminate fastener its two
Side respectively has a laminate clamping part, matches to buckle respectively with them simultaneously between two adjacent fiber distribution modules
It closes.
6. high-density optical-fiber wiring box unit according to claim 4, which is characterized in that the end face of the laminate fastener
The height of highly a little higher than fiber distribution module, for supporting upper layer laminate.
7. high-density optical-fiber wiring box unit according to any one of claim 1 to 6, which is characterized in that the optical fiber
Wiring module include pedestal and can from pedestal dismantle upper cover, and the fiber distribution module be 8 core fibre Wiring modules or
12 core fibre Wiring modules.
8. high-density optical-fiber wiring box unit according to claim 7, which is characterized in that on each laminate there are four installations
12 core fibre Wiring modules or six 8 core fibre Wiring modules.
9. high-density optical-fiber wiring box unit according to any one of claim 1 to 6, which is characterized in that the optical fiber
Wiring module supports predispersed fiber termination types and fused fiber splice type.
10. high-density optical-fiber wiring box unit according to claim 9, which is characterized in that selecting fused fiber splice type
When, the fiber distribution module is interior to be equipped with fused fiber splice protective device, to guide and protect optical fiber.
11. high-density optical-fiber wiring box unit according to any one of claim 1 to 6, which is characterized in that the laminate
Front end be equipped with multiple outwardly directed protruding portions, be equipped on the protruding portion optical patchcord management ring.
12. high-density optical-fiber wiring box unit according to any one of claim 1 to 6, which is characterized in that the laminate
Front end be equipped with multiple flaps for protruding from lamina surface certain altitude, to be compatible with the fiber jumper connector of different size.
13. high-density optical-fiber wiring box unit according to any one of claim 1 to 6, which is characterized in that the cabinet
Include:
U-shaped structure is made of two side cover plates and front lower cover plate that the cabinet front is arranged in；
Front upper cover plate is arranged in the cabinet front；
Rear upper plate is arranged at the cabinet rear portion；
Rear portion lower cover plate, is slidably disposed on the cabinet rear portion to extract out from cabinet, and after can closing the cabinet
At least part of end opening；
Front panel is arranged in the cabinet front end and can close at least part of the cabinet front opening.
14. high-density optical-fiber wiring box unit according to claim 12, which is characterized in that it further includes each is arranged in case
Mounting bracket outside body two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117080.5U CN209044127U (en) | 2018-12-17 | 2018-12-17 | High-density optical-fiber wiring box unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117080.5U CN209044127U (en) | 2018-12-17 | 2018-12-17 | High-density optical-fiber wiring box unit |
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|---|---|
| CN209044127U true CN209044127U (en) | 2019-06-28 |
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ID=67044486
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| CN201822117080.5U Active CN209044127U (en) | 2018-12-17 | 2018-12-17 | High-density optical-fiber wiring box unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115150683A (en) * | 2022-09-05 | 2022-10-04 | 广东电网有限责任公司珠海供电局 | Communication integration distribution device |
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2018
- 2018-12-17 CN CN201822117080.5U patent/CN209044127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115150683A (en) * | 2022-09-05 | 2022-10-04 | 广东电网有限责任公司珠海供电局 | Communication integration distribution device |
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