CN109979668A - A kind of shielded power supply line and its installation method - Google Patents
A kind of shielded power supply line and its installation method Download PDFInfo
- Publication number
- CN109979668A CN109979668A CN201910324274.9A CN201910324274A CN109979668A CN 109979668 A CN109979668 A CN 109979668A CN 201910324274 A CN201910324274 A CN 201910324274A CN 109979668 A CN109979668 A CN 109979668A
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- power supply
- supply line
- mask segments
- shielded
- secondary shielding
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 238000012216 screening Methods 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 19
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000019491 signal transduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/029—Screen interconnecting circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
Abstract
The invention discloses a kind of shielded power supply line and its installation methods, the power supply line includes the end of a thread, cable and line tail, cable is arranged between the end of a thread and line tail and is electrically connected, the cable is made of the first mask segments and secondary shielding section, first mask segments are made of the first conductive core, shielded layer and insulating layer from the inside to the outside, secondary shielding section is made of from from the inside to the outside the second conductive core and screening conductive layer, screening conductive layer or shielded layer are electrically connected with external grounding point, and the first conductive core is electrically connected with the second conductive core；The diameter of the secondary shielding section is less than the diameter of the first mask segments, and in the connecting portion of the first mask segments and secondary shielding section, the screening conductive layer is overlapped in the first mask segments.The present invention makes server network port conducted emission meet laws and regulations requirement, properties of product is made to be highly improved in such a way that shielded power supply line, shielded power supply line ground connection, shielded power supply line locally attenuate.
Description
Technical field
The present invention relates to server technology field is belonged to, it is related to the anti-Conduction Interference performance improvement of power supply line, it is specifically a kind of
Shielded power supply line and its installation method.
Background technique
Electromagnetic disturbance is a serious and ever-increasing environmental pollution form, its influence as low as broadcast reception when generate
Allow the crack that people is sick of, it is big to life accident caused by being disturbed because of control system.And radiation disturbance is electromagnetic disturbance
In most important interference mode, its direct outside radiated electromagnetic energy in the form of an electromagnetic wave, thus to human body and other equipment
It damages and interferes.
Safety Production Compliance refers to that product is sold to terminal user from being designed into, uses through product
Entire life cycle, relative to the law of market, regulation and standardized product safety compliance.This product safety accordance
Not only contain the product safety on common meaning.
It meanwhile further including the requirement of electromagnetic compatibility and radiation, energy conservation and environmental protection, food hygiene of product etc. etc..It is answered
When not only a kind of requirement, a this standard, a certificate, a test report can replace or can illustrate, more should be
A kind of product safety responsibility and activity of product life cycle are run through.
Existing technical solution leads interference problem for server network oral instructions, and existing frequently-used method is good PCB
Layout design, good placement layout, but be sometimes limited and structure, power supply line can be by network interface near, can make
Network interface conduction is exceeded, and power supply line will not be placed in machine box for server by prior art in order to be tested by electromagnetic compatibility
Portion.
In prior art, power supply line will not be placed on inside machine box for server by Technical Review, but for
In front, for power supply power supply in frame mode below, there are currently no good schemes may be implemented by PSU.And it is limited to power supply line
Compare thick, the scheme of shielded power supply line also few people's application.But do not apply this organization plan, can make product structure by
Limit, can be because Electromagnetic Compatibility performance influences product overall structure and appearance.
Summary of the invention
The present invention provides a kind of shielded power supply line and its installation method, passes through machine for solving power supply line in existing server
When case internal network near ports, power supply line can interfere the network port, the problem for causing network port conducted emission exceeded.
The present invention is achieved by the following technical programs:
A kind of shielded power supply line, the power supply line include the end of a thread, cable and line tail, and cable is arranged between the end of a thread and line tail
And be electrically connected, the cable is made of the first mask segments and secondary shielding section, the first mask segments from the inside to the outside by the first conductive core,
Shielded layer and insulating layer are constituted, and secondary shielding section is made of from from the inside to the outside the second conductive core and screening conductive layer, screening conductive
Layer or shielded layer are electrically connected with external grounding point, and the first conductive core is electrically connected with the second conductive core；The secondary shielding section
Diameter is less than the diameter of the first mask segments, and in the connecting portion of the first mask segments and secondary shielding section, the screening conductive layer is taken
It connects in the first mask segments.
The diameter difference of a kind of shielded power supply line as described above, the diameter of the secondary shielding section and the first mask segments is at least
For 0.5mm.
A kind of shielded power supply line as described above, the screening conductive layer are made of conductive fabric.
The present invention also provides a kind of installation methods of shielded power supply line, install for as above any power supply line,
The installation method the following steps are included:
S1. the head of the power supply line is electrically connected with the port power supply module PSU of front side in cabinet；
S2. it determines the routing path of cabinet inside, and the corresponding space of routing path is divided into normal region and tightening
Region；
S3. according in normal region, tightening region wiring path space and length, determine that the cable first shields
Section, the diameter of secondary shielding section, length；
S4. the first mask segments, secondary shielding section cloth is corresponded to be placed in normal region and tightening region；
S5. the rear side tail portion of the power supply line being fixed in cabinet.
A kind of installation method of shielded power supply line as described above, the operating voltage of the power supply line are 220V.
Compared with the prior art, the advantages of the present invention are as follows:
When the power supply line of the invention passes through cabinet inside cabling, the case where guaranteeing the design of server overall appearance
Under, in such a way that shielded power supply line, shielded power supply line ground connection, shielded power supply line locally attenuate, pass server network port
It leads transmitting and meets laws and regulations requirement, properties of product is made to be highly improved.So that server network conducted emission is met laws and regulations requirement, makes
Electromagnetic Compatibility index is met the requirements, and further improves the competitiveness of product.
By testing inspection and date comprision, power supply line of the present invention is shielded by power supply line, power supply line is grounded,
The scheme that power supply line local area attenuates, network interface conduction test situation more than B grades limit values before rectifying and improving, has till now more than 10DB
Amount, network interface conduct the improvement for having 10DB, reduce 10 times relative to energy.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the structural schematic diagram of power supply line of the present invention；
Fig. 2 is another structural schematic diagram of power supply line of the present invention；
Fig. 3 is the flow chart of installation method of the present invention；
Fig. 4 is the test data figure of existing power supply line；
Fig. 5 is the Urban Data figure of power supply of the present invention.
Appended drawing reference: 1- power supply line, 11- the end of a thread, 12- cable, the first mask segments of 121-, 122- secondary shielding section, 13- line
Tail.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1-Figure 3, a kind of shielded power supply line disclosed in the present embodiment, power supply line 1 include the end of a thread 11,12 and of cable
Line tail 13, cable are arranged between the end of a thread and line tail and are electrically connected, and cable is by 122 structure of the first mask segments 121 and secondary shielding section
At, the first mask segments 121 are made of the first conductive core, shielded layer and insulating layer from the inside to the outside, secondary shielding section 122 from from it is interior to
It is made of outside the second conductive core and screening conductive layer, screening conductive layer or shielded layer are electrically connected with external grounding point, and first leads
Battery core is electrically connected with the second conductive core；The diameter of secondary shielding section less than the first mask segments diameter, in 121 He of the first mask segments
The connecting portion of secondary shielding section 122, screening conductive layer are overlapped in the first mask segments.
As shown in Figure 1, the diameter of secondary shielding section 122 and the diameter difference of the first mask segments 121 are at least in the present embodiment
0.5mm.Wherein, the screening conductive layer of secondary shielding section 122 is made of conductive fabric.
Specifically, electromagnetic interference phenomenon occurs, the factor of three aspects: interference source, coupling path and sensitive source is needed,
Wherein, interference source is the circuit or equipment for generating electromagnetic disturbance；Coupling path is the interfering energy for referring to generate interference source
It is transmitted to the path in sensitive source；Sensitive source refers to the circuit or equipment by this interference effect.Three above condition is known as electromagnetism
The three elements of interference, as long as the problem of electromagnetic interference will no longer be present by one in three elements elimination.
The cabinet inside structure of existing server, power supply line are exported from PSU, from server side wall by reaching inside machine
Power supply line output terminal, when due to design, 220V power supply line passes through cabinet inside, is carrying out electromagnetic compatibility laboratory, MOC card uploads
Leading transmitting is more than test limit value.
Since electric source line interface is by when carrying out network interface conduction test, will cause receiver and receive electricity near MOC card
Energy on the line of source, so that causing network interface conduction is more than test limit value, energy is crosstalked into network interface on power supply line in order to prevent, can be with
The scheme taken is power supply line shielding.
Shielding is exactly the isolation to metal is carried out between two spaces region, to control electric field, magnetic field and electromagnetic wave by one
Induction and radiation of a region to another region.Play a major role is with shield by component, circuit, sub-assembly, cable
Or the interference source of whole system is surrounded, and is prevented interference electromagnetic field to external diffusion, will be received circuit, equipment with shield or be
System is surrounded, and prevents its influence by external electromagnetic field.
Since shield is to from the external disturbances electromagnetic waves such as conducting wire, cable, component, circuit or system and internal electromagnetism
Wave plays a part of absorbing energy, reflected energy and inefficient energy.Therefore, shield has the function of weakening interference, passes through
Verifying must take shielded power supply line in the design of shielded power supply line, but only shielded power supply line design is not able to satisfy
The design requirement of signal transduction.
And shielded layer is subjected to grounding, the purpose of ground connection is mainly as follows:
As soon as firstly, ground connection so that all element circuits in entire circuit system is had a public reference zero potential,
Be each circuit ground between there is no a potential difference, guarantee the work that circuit system can be stable.
Secondly, preventing the interference of external electromagnetic field.It is also electrostatic sense that chassics earth, which provides leakage path for glitch,
It answers and is accumulated in a large amount of charges on casing and is released by the earth.Otherwise, the high pressure that these charges are formed may cause in equipment
The spark discharge in portion and interfere.In addition, such as selecting suitable ground connection for the shield of circuit, can get good screen
Cover effect.
Ground connection can be understood as an isopotential point or equipotential plane.Wherein problem with grounding is related with PCB, these are asked
Topic is attributed to be provided between simulation and digital circuit with reference to connection and provide high frequency between the stratum and metal shell of PCB and connect
It connects.
Ground connection, despite the most important aspect of EMC Design, but this problem is not easy to intuitivism apprehension, and
Generally also it is difficult to model and analyzes, because influencing in many uncontrollable factors, many engineers is caused not understand this.Its
As soon as each circuit of reality will finally have a reference ground connection source, grounding design is specifically contemplated that at the beginning of circuit design.Suitably answer
Many noise problems will be avoided with the earthing method and electromagnetic shielding of PCB.An advantage for designing good earthed system is exactly
Undesirable interference and transmitting are prevented with very low cost.
As shown in Figure 4, Figure 5, it is compared by test data as can be seen that by power supply line shielding, power supply line ground connection, power supply
The scheme that line local area attenuates, network interface conduction test situation more than B grades limit values before rectifying and improving, there is 10DB surplus, net till now
The improvement of 10DB is led in oral instructions, reduces 10 times relative to energy.
The present invention cleverly utilizes the shielding design of power supply line, and in being commonly designed, power supply line shielding design can make power supply
The thicker increased costs of line, and power supply line is seldom applied to cabinet inside.
Therefore, few people can use the shielding design of power supply line, about shielding layer grounding in grounded signal-wires through common
It arrives, but the few designs of power supply line shielding layer grounding can be applied, and be grounded critically important for EMC, the production of a ground connection
Product will substantially reduce the risk of EMC the failure of an experiment.
It can solve the problems, such as that the target of network interface conduction interference is not configured to that introducing ground will be harassed, but reduce stream by being grounded
Enter the electric current of LISN.Eventually by the mode that power supply line partial region attenuates, power supply line is attached to cabinet inside, passes through reality
Test, network interface conducted emission meet design requirement.
As shown in figure 3, the present embodiment also discloses a kind of installation method of shielded power supply line, for any institute as above
State power supply line installation, the installation method the following steps are included:
S1. the head of the power supply line is electrically connected with the port power supply module PSU of front side in cabinet；
S2. it determines the routing path of cabinet inside, and the corresponding space of routing path is divided into normal region and tightening
Region；
S3. according in normal region, tightening region wiring path space and length, determine that the cable first shields
Section, the diameter of secondary shielding section, length；
S4. the first mask segments, secondary shielding section cloth is corresponded to be placed in normal region and tightening region；
S5. the rear side tail portion of the power supply line being fixed in cabinet.
A kind of installation method of shielded power supply line as described above, the operating voltage of the power supply line are 220V.
The present invention cleverly utilizes the shielding design of power supply line, and in being commonly designed, power supply line shielding design can make power supply
The thicker increased costs of line, and power supply line is seldom applied to cabinet inside.
Therefore, few people can use the shielding design of power supply line, about shielding layer grounding in grounded signal-wires through common
It arrives, but the few designs of power supply line shielding layer grounding can be applied, and be grounded critically important for EMC, the production of a ground connection
Product will substantially reduce the risk of EMC the failure of an experiment.
It can solve the problems, such as that the target of network interface conduction interference is not configured to that introducing ground will be harassed, but reduce stream by being grounded
Enter the electric current of LISN.Eventually by the mode that power supply line partial region attenuates, power supply line is attached to cabinet inside, passes through reality
Test, network interface conducted emission meet design requirement.
As shown in Fig. 2, the power supply line can be according to moving towards spatial position, size, flexible modulation in machine box for server
One mask segments, the combination of secondary shielding section, position and length are adapted it with normal region, tightening region respectively, convenient for peace
Dress uses.
The technology contents of the not detailed description of the present invention are well-known technique.
Claims (5)
1. a kind of shielded power supply line, the power supply line includes the end of a thread, cable and line tail, and cable is arranged between the end of a thread and line tail simultaneously
Electrical connection, which is characterized in that the cable is made of the first mask segments and secondary shielding section, and the first mask segments are from the inside to the outside by the
One conductive core, shielded layer and insulating layer are constituted, and secondary shielding section is made of from from the inside to the outside the second conductive core and screening conductive layer,
Screening conductive layer or shielded layer are electrically connected with external grounding point, and the first conductive core is electrically connected with the second conductive core；Described second
The diameter of mask segments less than the first mask segments diameter, in the connecting portion of the first mask segments and secondary shielding section, the shielding
Conductive layer is overlapped in the first mask segments.
2. a kind of shielded power supply line according to claim 1, which is characterized in that the diameter and first of the secondary shielding section
The diameter difference of mask segments is at least 0.5mm.
3. a kind of shielded power supply line according to claim 1, which is characterized in that the screening conductive layer is by conductive fabric structure
At.
4. a kind of installation method of shielded power supply line, for the power supply line installation as described in right 1-3 is any, which is characterized in that
The installation method the following steps are included:
S1. the head of the power supply line is electrically connected with the port power supply module PSU of front side in cabinet；
S2. it determines the routing path of cabinet inside, and the corresponding space of routing path is divided into normal region and tightening region；
S3. according in normal region, tightening region wiring path space and length, determine first mask segments of cable, the
The diameter of two mask segments, length；
S4. the first mask segments, secondary shielding section cloth is corresponded to be placed in normal region and tightening region；
S5. the rear side tail portion of the power supply line being fixed in cabinet.
5. a kind of installation method of shielded power supply line according to claim 1, which is characterized in that the work of the power supply line
Voltage is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324274.9A CN109979668A (en) | 2019-04-22 | 2019-04-22 | A kind of shielded power supply line and its installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324274.9A CN109979668A (en) | 2019-04-22 | 2019-04-22 | A kind of shielded power supply line and its installation method |
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| Publication Number | Publication Date |
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| CN109979668A true CN109979668A (en) | 2019-07-05 |
Family
ID=67085625
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| CN201910324274.9A Pending CN109979668A (en) | 2019-04-22 | 2019-04-22 | A kind of shielded power supply line and its installation method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205985Y (en) * | 1994-01-10 | 1995-08-23 | 北京牡丹电子集团公司 | Power plug wire with electromagnetic shield |
| CN102013595A (en) * | 2010-10-20 | 2011-04-13 | 中兴通讯股份有限公司 | Power supply cable assembly |
| CN203165526U (en) * | 2013-01-14 | 2013-08-28 | 扬州恒通线缆有限公司 | Shielding type power line |
| CN105513690A (en) * | 2016-01-28 | 2016-04-20 | 苏州路之遥科技股份有限公司 | Anti-interference three-layer flat shielding power line |
| US20170149406A1 (en) * | 2015-11-24 | 2017-05-25 | Cisco Technology, Inc. | Unified Power and Data Cable |
| CN207250215U (en) * | 2017-07-11 | 2018-04-17 | 涂修宇 | A kind of lightning protection shields power cord |
| RU181131U1 (en) * | 2018-03-07 | 2018-07-05 | Закрытое акционерное общество "Москабельмет" (ЗАО "МКМ") | Power cable for laying in the ground |
-
2019
- 2019-04-22 CN CN201910324274.9A patent/CN109979668A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205985Y (en) * | 1994-01-10 | 1995-08-23 | 北京牡丹电子集团公司 | Power plug wire with electromagnetic shield |
| CN102013595A (en) * | 2010-10-20 | 2011-04-13 | 中兴通讯股份有限公司 | Power supply cable assembly |
| CN203165526U (en) * | 2013-01-14 | 2013-08-28 | 扬州恒通线缆有限公司 | Shielding type power line |
| US20170149406A1 (en) * | 2015-11-24 | 2017-05-25 | Cisco Technology, Inc. | Unified Power and Data Cable |
| CN105513690A (en) * | 2016-01-28 | 2016-04-20 | 苏州路之遥科技股份有限公司 | Anti-interference three-layer flat shielding power line |
| CN207250215U (en) * | 2017-07-11 | 2018-04-17 | 涂修宇 | A kind of lightning protection shields power cord |
| RU181131U1 (en) * | 2018-03-07 | 2018-07-05 | Закрытое акционерное общество "Москабельмет" (ЗАО "МКМ") | Power cable for laying in the ground |
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Application publication date: 20190705 |