CN201886830U - Cable used in communication system - Google Patents
Cable used in communication system Download PDFInfo
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- CN201886830U CN201886830U CN2010206353038U CN201020635303U CN201886830U CN 201886830 U CN201886830 U CN 201886830U CN 2010206353038 U CN2010206353038 U CN 2010206353038U CN 201020635303 U CN201020635303 U CN 201020635303U CN 201886830 U CN201886830 U CN 201886830U
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- cable
- copper
- inner wire
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Abstract
The utility model discloses a cable used in a communication system, which comprises an insulation cable core, a shielding layer and an outer protective sleeve, wherein the insulation cable core comprises an inner conductor and an insulation layer, the inner conductor is formed by twisting a tin plating copper covered steel wire and a tin plating copper covered aluminum and magnesium wire, the insulation layer is covered outside the inner conductor, the shielding layer is covered outside the insulation cable core and is formed by a low-carbon zinc plating steel wire through weaving, and the outer protective sleeve is covered outside the shielding layer. The cable disclosed by the utility model adopts the inner conductor formed by twisting the tin plating copper covered steel wire and the tin plating copper covered aluminum and magnesium wire for replacing a pure copper conductor in the traditional cable, and the cable stolen probability can be obviously reduced for the cable formed by the inner conductor and the shielding layer formed by weaving the low-carbon zinc plating steel wire on the premise of meeting the electric performance. In addition, compared with the traditional cable made of pure copper, the cable disclosed by the utility model also has the further effects of low cost, light weight and the like and is not easily influenced by the copper price in the international market.
Description
Technical field
The cable that the utility model relates to, particularly a kind of cable that is used for communication system.
Background technology
In communication systems such as 3G, LTE, WIMAX for example, adopt the baseband extension networking structure can realize networking flexibly, and satisfy the requirement of user for different networkings.
In the communication system of baseband extension networking structure, remote termination partly belongs to the active equipment that power supply need be provided, and is installed in outdoor position near antenna usually.In this case, the power supply of remote termination is provided by cable by the indoor power supply system usually.
The cable that provides power supply for remote termination that adopts at present is based on copper cable, because copper cable is worth high and reclaims easily, is understood that the higher copper cable of copper content often becomes stolen object when outdoor being positioned at.Though at the stolen surveillance and control measures such as similar infrared probe, infrared thermoviewer that adopted of copper cable, these measures fundamentally do not suppress the generation of the stolen situation of copper cable at present.
The utility model content
In view of this, the utility model provides a kind of cable that is used for communication system, can reduce the stolen probability of cable.
A kind of cable that is used for communication system that the utility model provides comprises:
Insulated wire cores, described insulated wire cores comprise by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk closes the inner wire that forms and is wrapped in the outer insulating barrier of described inner wire;
Be wrapped in described insulated wire cores screen outer and that form by the braiding of low-carbon (LC) zinc-coated wire;
And, be wrapped in the outer oversheath of described screen.
As seen from the above technical solution, the utility model is selected for use and is closed the inner wire that forms by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk and substitute fine copper material conductor in the traditional cable, satisfying under the prerequisite of electric property the cable that the screen that forms with low-carbon (LC) zinc-coated wire braiding is formed.Because inner wire is to be closed by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk to form, thereby the cross section color and luster and the iron and steel of inner wire are similar, thereby it is stolen obviously to reduce cable.Even if the cable that the utility model provides is installed on to be cut off when outdoor and steals, steal taker and do not possess fine copper material conductor in the cable according to identifying with the similar inner wire color and luster of iron and steel, also just avoid stealing taker and cut off once more and steal, thereby reduce the stolen probability of secondary.And, than the cable of traditional employing fine copper material, the cable in the utility model also have cost low, in light weight, be not subject to further effect such as international market copper price influence.
Further, described insulated wire cores can and be wrapped in the same screen for 2, and the cross sectional shape of every eradication edge core is flat ellipse; Cross sectional shape is flat disciform 2 to be thoroughly done away with the edge cores and can be wrapped in side by side in the same screen along the ellipse short-axis direction, and the cross sectional shape that make described screen, is wrapped in the outer oversheath of described screen is rounded.Thereby, powering mode and interface structure that can compatible traditional cable, relevant corollary equipment need not to change.
Again further, the sectional area of the inner wire of every eradication edge core minimum is 6mm
2, be 28mm to the maximum
2Thereby, can guarantee that cable and the traditional cable in the utility model has essentially identical electric property, can substitute the traditional cable of the fine copper material conductor that uses in the communications industry.
For example, the sectional area of the inner wire of every eradication edge core is 6mm
2, 10mm
2, 18mm
2, 28mm
2In arbitrary value the time, cable promptly of the present utility model is 2 * 6mm
2, or 2 * 10mm
2, or 2 * 18mm
2, or 2 * 28mm
2, then can substitute the 2 * 3.3mm that uses in the communications industry best respectively
2, 2 * 6mm
2, 2 * 10mm
2, 2 * 16mm
2The traditional cable of fine copper material conductor.
Description of drawings
Fig. 1 is for being used for the cross-sectional view of the cable of communication system in the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
As shown in Figure 1, the present embodiment cable 1 that is used for communication system comprises: insulated wire cores 10, be wrapped in the outer screen 20 of insulated wire cores 10 and be wrapped in the outer oversheath 30 of screen 20.
Wherein, insulated wire cores 10 comprises:
Close the inner wire 11 that (two a kind of lay configuration of round expression that are arranged side by side of mark among Fig. 1 " 11 " indication but be not limited to this kind lay configuration in the practical application) form by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk;
And, be wrapped in the insulating barrier 12 outside the inner wire 11.
That is to say, present embodiment is selected for use by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk and is closed the fine copper material conductor that the inner wire that forms 11 substitutes in the traditional cables, satisfying under the prerequisite of electric property the cable that the screen that forms with low-carbon (LC) zinc-coated wire braiding is formed.
Because inner wire 11 is to be closed by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk to form, thereby the cross section color and luster and the iron and steel of inner wire 11 are similar, thereby it is stolen obviously to reduce cable 1.
Even if the cable in the present embodiment 1 is stolen being installed on to be cut off when outdoor, steal taker and do not possess fine copper material conductor in the cable 1 according to identifying with similar inner wire 11 color and lusters of iron and steel, also just avoid stealing taker and cut off and steal the cable 1 that is installed on other positions once more, thereby reduce the stolen probability of secondary.
And, than the cable of traditional employing fine copper material, the cable 1 that adopts as above structure to form in the present embodiment also has cost low (being about 50% below of traditional cable), (be about traditional cable 37%～40%) in light weight, be not subject to further effect such as international market copper price influence.
In addition, for powering mode and the interface structure that mates traditional cable, in cable 1, be provided with 2 and thoroughly do away with edge core 10.
Preferably, close the inner wire 11 that is wrapped in the insulating barrier 12 that forms by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk and be flat, make the cross sectional shape of every eradication edge core 10 be flat ellipticity; Simultaneously, cross sectional shape is flat elliptoid 2 to be thoroughly done away with edge cores 10 and prolongs the ellipse short shaft direction and be wrapped in side by side in the screen 20, makes the cross sectional shape of screen 20 and oversheath 30 rounded.
Thus, though the each several part structure of the cable 1 in the present embodiment slightly is different from the structure of traditional cable, but still powering mode and interface structure that can compatible traditional cable.
Yet, because the cable 1 in the present embodiment is used to realize that the material of each several part structure is different from traditional cable, thereby might slightly loss on electric property.
At the loss on the electric property, overcome by the size of determining inner wire 11 in the present embodiment.
At first, according to the resistivity law
As can be known, certain in length, under the situation that resistance is similar to, as long as suitably increase the cross-sectional area S of conductor, electric property can reach the electricity function index of fine copper cable.
Specifically to present embodiment, tinning steel-in-copper, tin-coated copper plated aluminium magnesium mixed conductor electricalresistivity are 1.5～2.2 times of copper material lead, therefore, as long as tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk being closed the cross-sectional area S of the inner wire 11 that forms suitably increases, the resistance R and the fine copper material conductor that can make tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk close the inner wire 11 that forms are similar to, and then the electric property that makes tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk close the inner wire 11 that forms reaches the electricity function index of fine copper material conductor.
Secondly, the cross-sectional area S with reference to the selected inner wire 11 of above-mentioned analysis gets 10mm
2, and get 10mm by following experimental test cross-sectional area S
2The electrical characteristic of inner wire 11.
1, laboratory test:
Environment: 23 ℃ of humidity 45% of temperature;
Test instrumentation: precision type bridge, voltmeter, clamp on amperemeter;
Testing equipment: Base Band Unit (BBU);
Test cable: 2 * 6mm
2Traditional cable, it has 2 and thoroughly does away with the edge cores, the conductor in every eradication edge core is that fine copper material, cross-sectional area are 6mm
22 * 6mm
2Test cable, it has 2 and thoroughly does away with the edge cores, the conductor in every eradication edge core is that copper covered steel, cross-sectional area are 6mm
22 * 10mm in the present embodiment
2Cable 1 (hereinafter abbreviating antitheft cable as), it has 2 and thoroughly does away with edge cores 10, the inner wire 11 of every eradication edge core 10 closes by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk and forms, inner wire 11 cross-sectional areas of every eradication edge core 10 are 10mm
2
Test procedure:
1) intercepts each 100 meters of traditional cable, test cable and antitheft cables respectively, be the BBU power supply of regulatable load;
2) mains switch of adjusting BBU is controlled the operating current of three kinds of various flows through traditional cable, test cable and antitheft cable; Under every kind of operating current control, utilize voltmeter to test the pressure drop of the traditional cable of intercepting, test cable and antitheft cable respectively, the pressure drop results that test obtains is as shown in table 1;
| Cable specification operating current | 2A | 4A | 5A | 6A | 8A |
| The fine copper cable | 1.3V | 2.6V | 3.3V | 3.9V | 5.3V |
| Copper covered steel | 2.3V | 4.6V | 5.94V | 7.2V | 9.5V |
| Antitheft cable | 1.3V | 2.6V | 3.3V | 3.9V | 5.3V |
Table 1
As above-mentioned pressure drop results as seen, the pressure drop of antitheft cable and traditional cable are basic identical.
And, in above-mentioned test process, utilize precision type bridge to test the resistance of the traditional cable of intercepting, test cable and antitheft cable respectively, the result who obtains: the resistance of traditional cable is that the resistance of 3.3 Ω/km, test cable is that the resistance of 5.95 Ω/km, antitheft cable is 3.3 Ω/km.
As seen, the resistance of antitheft cable and traditional cable are also basic identical.
2, outdoor test:
Test cable: 2 * 6mm
2Traditional cable, it has 2 and thoroughly does away with the edge cores, the conductor in every eradication edge core is that fine copper material, cross-sectional area are 6mm
22 * 10mm
2Antitheft cable, it has 2 and thoroughly does away with edge cores 10, the inner wire 11 of every eradication edge core 10 closes by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk and forms, and inner wire 11 cross-sectional areas of every eradication edge core 10 are 10mm
2
Test procedure:
Utilize remote termination part (for example RRU) power supply of traditional cable for BBU in outdoor tower station 1～3;
Utilize remote termination part (for example RRU) power supply of antitheft cable for BBU in outdoor tower station 1～3;
Pressure drop when comparing the pressure drop when utilizing the traditional cable power supply and utilizing the antitheft cable power supply, specifically as shown in table 2;
Table 2
As above-mentioned pressure drop results as seen, the pressure drop of antitheft cable and traditional cable are basic identical.
Based on above-mentioned test as can be known, for 2 * 6mm
2Traditional cable have akin electrical characteristic, present embodiment determines that the sectional area that closes the inner wire 11 that forms by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk in the every eradication edge core 10 optimally is 10mm
2
Certainly, since traditional cable except 2 * 6mm
2Specification outside, also may adopt 2 * 3.3mm
2, 2 * 10mm
2, 2 * 16mm
2Wait other specifications, therefore, can be not limited to a kind of electrical characteristic of traditional cable of specification in order to make antitheft cable in the present embodiment, further test at the traditional cable of other specifications, result of the test is as shown in table 3:
Table 3
The result of the test of table 1～table 3 is as seen as described above:
The sectional area minimum of inner wire 11 is got 6mm
2The time, 2 * 6mm
2The time, with 2 * 3.3mm
2Traditional cable to have electrical characteristic the most approximate;
The sectional area of inner wire 11 is got 10mm
2The time, 2 * 10mm
2The time, with 2 * 6mm
2The electrical characteristic of traditional cable the most approximate;
The sectional area of inner wire 11 is got 18mm
2The time, 2 * 18mm
2The time, with 2 * 10mm
2The electrical characteristic of traditional cable the most approximate;
The sectional area maximum of inner wire 11 is got 28mm
2The time, 2 * 28mm
2The time, with 2 * 16mm
2The electrical characteristic of traditional cable the most approximate.
Need to prove that the sectional area of inner wire 11 is not limited in 2 * 6mm
2, 2 * 10mm
2, 2 * 18mm
2, 2 * 28mm
2These several values the most approximate with the electrical characteristic of different size traditional cable, but can be taken at 2 * 6mm
2～2 * 28mm
2Other values in interval.Though described other values are not the values the most approximate with the electrical characteristic of different size traditional cable, at different actual application environment, the deviation of existence also can be accepted.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection range of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a cable that is used for communication system is characterized in that, comprising:
Insulated wire cores, described insulated wire cores comprise by tinning steel-in-copper silk and tin-coated copper plated aluminium magnesium skein silk closes the inner wire that forms and is wrapped in the outer insulating barrier of described inner wire;
Be wrapped in described insulated wire cores screen outer and that form by the braiding of low-carbon (LC) zinc-coated wire;
And be wrapped in the outer oversheath of described screen.
2. cable as claimed in claim 1 is characterized in that, described insulated wire cores is 2.
3. cable as claimed in claim 2 is characterized in that, the cross sectional shape of every eradication edge core is flat ellipse; And the cross sectional shape that cross sectional shape is flat disciform 2 to be thoroughly done away with the edge cores and be wrapped in side by side in the same screen along the ellipse short-axis direction, makes described screen, be wrapped in the outer oversheath of described screen is rounded.
4. as claim 2 or 3 described cables, it is characterized in that the sectional area minimum of the inner wire of every eradication edge core is 6mm
2, be 28mm to the maximum
2
5. cable as claimed in claim 4 is characterized in that, the sectional area of the inner wire of every eradication edge core is 6mm
2, 10mm
2, 18mm
2, 28mm
2In arbitrary value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206353038U CN201886830U (en) | 2010-11-25 | 2010-11-25 | Cable used in communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206353038U CN201886830U (en) | 2010-11-25 | 2010-11-25 | Cable used in communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886830U true CN201886830U (en) | 2011-06-29 |
Family
ID=44184378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206353038U Expired - Lifetime CN201886830U (en) | 2010-11-25 | 2010-11-25 | Cable used in communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886830U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425614B2 (en) | 2011-08-01 | 2016-08-23 | Huawei Technologies Co., Ltd. | Lightning protection radio remote unit, distributed base station, lightning protection system and method |
| CN105895251A (en) * | 2016-07-01 | 2016-08-24 | 江苏珠影特种电缆有限公司 | Fire-resistance overhead insulated cable |
| CN106817787A (en) * | 2016-12-15 | 2017-06-09 | 安邦电气股份有限公司 | A kind of tunnel electric-heating belt |
-
2010
- 2010-11-25 CN CN2010206353038U patent/CN201886830U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425614B2 (en) | 2011-08-01 | 2016-08-23 | Huawei Technologies Co., Ltd. | Lightning protection radio remote unit, distributed base station, lightning protection system and method |
| CN105895251A (en) * | 2016-07-01 | 2016-08-24 | 江苏珠影特种电缆有限公司 | Fire-resistance overhead insulated cable |
| CN106817787A (en) * | 2016-12-15 | 2017-06-09 | 安邦电气股份有限公司 | A kind of tunnel electric-heating belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |