CN203734260U - Pre-twisted type strain clamp with monitoring function - Google Patents
Pre-twisted type strain clamp with monitoring function Download PDFInfo
- Publication number
- CN203734260U CN203734260U CN201320894725.0U CN201320894725U CN203734260U CN 203734260 U CN203734260 U CN 203734260U CN 201320894725 U CN201320894725 U CN 201320894725U CN 203734260 U CN203734260 U CN 203734260U
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- CN
- China
- Prior art keywords
- optical fiber
- preformed armor
- armor rods
- strain clamp
- helical metal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a pre-twisted type strain clamp with a monitoring function. The pre-twisted type strain clamp comprises a strain preformed armor rod and a matching connecting armor clamp. The strain preformed armor rod is formed by gluing a plurality of spiral metal wires and at least one spiral metal tube side by side, and a monitoring optical fiber is arranged in each spiral metal tube. The strain preformed armor rod formed by the spiral metal wires and the spiral metal tube with the monitoring optical fiber in the inside is folded to form a U-shaped elbow. The U-shaped elbow is arranged on a connecting ring of the connecting armor clamp in a sleeving manner so as to enable the strain clamp to be connected with a tower. The remaining parts of the preformed armor rod are evenly arrayed to form an empty tube. The monitoring optical fiber is further arranged on the structure of an original pre-twisted type strain clamp, the characteristics that the original pre-twisted strain clamp is high in holding force and simple to install and the like are ensured. Moreover, the pre-twisted strain clamp is made to have the temperature and tension monitoring function, so that the operation state of an overhead transmission line is monitored in real time. Consequently, the pre-twisted type strain clamp is favorable to safety operation of power transmission lines.
Description
Technical field
The utility model relates to overhead transmission line gold utensil, particularly a kind of pre-hinged strain clamp with monitoring function.
Background technology
Pre-hinged strain clamp is a kind of widely used strain clamp, fixing for the centre of overhead line conductor and aerial fiber cable, terminal, have that grip force is high, lightweight, stress distribution evenly, the feature such as simple, the highly versatile of good corrosion resistance, installation, be widely used on the aerial fiber cables such as wire and built on stilts composite ground wire OPGW, built on stilts composition phase conductor OPPC, All Dielectric Self-Supporting Aerial Optical Fiber Cable ADSS.
Pre-hinged strain clamp is simple in structure, and generally strain insulator preformed armor rods and the supporting connection gold utensil by preformed curl forms, and wherein supporting connection gold utensil is comprised of heart or U-link and extension rod or link plate, link etc.According to Tensity size, pre-hinged strain clamp can be divided into individual layer pre-hinged strain clamp and double-deck pre-hinged strain clamp.For individual layer pre-hinged strain clamp, strain insulator preformed armor rods is doubled state and makes return bend, thereby return bend is placed on to connect on gold utensil connecting ring strain clamp is connected with shaft tower, the evenly distributed formation blank pipe of the remainder of preformed armor rods (both legs).The external diameter that the internal diameter of the blank pipe that preformed armor rods both legs form compares applicable wire/optical cable/bracing wire is little, produces a uniform compression, and then is converted to frictional force, thereby produce extremely strong tightening force when it is wrapped on wire or aerial fiber cable at its contact-making surface.In addition, preformed armor rods both legs structure inner side is often sprayed with diamond dust, to increase the frictional force between preformed armor rods and wire or aerial fiber cable.For double-deck pre-hinged strain clamp, also include internal layer preformed armor rods (claiming to protect again lines preformed armor rods).For avoiding alignment error and being convenient to Fast Installation, internal layer preformed armor rods is usually prefabricated into 2～4 son bundles when processing, and every height Shu Jun has some bonding the forming of helical metal wire.Internal layer preformed armor rods inwall is stained with particulate diamond dust, it can increase frictional force while being wrapped in wire or aerial fiber cable outer surface, strain insulator preformed armor rods is wrapped in internal layer preformed armor rods outer surface again, and double-deck pre-hinged strain clamp can reduce the lateral pressure to wire or optical cable, and larger tightening force is provided.
In use, strain clamp will bear whole pulling force of wire or aerial fiber cable, and when there is the bad weathers such as sleet icing, the pulling force that wire or strain clamp bear is excessive, easily causes breaking, falling the major accidents such as tower.In addition, for the wire and the built on stilts composition phase conductor OPPC that carry electric current, after additional preformed armor rods strain clamp, limit by radiating condition, the temperature of wire or built on stilts composition phase conductor OPPC and strain clamp contact position tends to higher than the temperature of other position, and excess Temperature can further affect again the mechanical performance of wire or built on stilts composition phase conductor OPPC and strain clamp.Therefore, the pulling force of wire and temperature Real-Time Monitoring have practical significance to prevention electric power accident and the operation of guarantee electric power safety.The existing application report that adopts the monitorings such as image/video, wireless sensing of the crucial power circuit of part, but not yet apply because system cost is high, later maintenance is difficult.According to the annexation of strain clamp and wire and aerial fiber cable, pulling force and the temperature regime of the pulling force of strain clamp and temperature regime and wire or aerial fiber cable are closely related.At present, fixing of an existing pre-hinged strain clamp centre for wire and aerial fiber cable, terminal, does not have pulling force and temperature-monitoring function.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of pre-hinged strain clamp with monitoring function.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of pre-hinged strain clamp with monitoring function, comprise strain insulator preformed armor rods and supporting connection gold utensil, described strain insulator preformed armor rods has been folded to form return bend, described strain insulator preformed armor rods is by bonding the forming of helical metal tube side-by-side of some helical metal wires and at least one built-in monitoring optical fiber, described return bend is placed on the connecting ring of described supporting connection gold utensil, thereby strain clamp is connected with shaft tower, the evenly distributed formation blank pipe of the remainder of described strain insulator preformed armor rods except described return bend.
The inner side of described helical metal pipe and described helical metal wire is all bonded with diamond dust.
This pre-hinged strain clamp also includes the internal layer preformed armor rods of some height Shu Zucheng, at least one height bundle of described internal layer preformed armor rods includes the helical metal pipe of a built-in monitoring optical fiber, helical metal pipe and the some helical metal wires of described built-in monitoring optical fiber are adhesively fixed side by side, and a son that forms internal layer preformed armor rods is restrainted, the described internal layer preformed armor rods that includes some height bundles is wrapped in wire or aerial fiber cable outer surface successively, and described strain insulator preformed armor rods is wrapped in internal layer preformed armor rods outer surface again.
The external diameter of the helical metal pipe of described built-in monitoring optical fiber is consistent with the external diameter of the helical metal wire of described internal layer preformed armor rods bundle.
The built-in optical fiber of helical metal pipe of described built-in monitoring optical fiber is to have certain remaining long temperature-measuring optical fiber or the long strain optical fiber of nothing left.
The length of the monitoring optical fiber that expose at described helical metal pipe two ends is 0.5～10 meter.
Compared with prior art, the utility model has the advantage of in pre-hinged strain clamp and be compounded with the helical metal pipe that is built-in with monitoring optical fiber, by monitoring optical fiber and in conjunction with ripe at present Brillouin fiber optic sensing equipment or Raman fiber sensing equipment, can realize pre-hinged strain clamp on-line monitoring function.The tension force that pre-hinged strain clamp bears is being passed to the long strain optical fiber of nothing left in helical metal pipe, because the strain optical fiber in helical metal pipe does not have remaining length, and tension force that therefore can real-time perception strain clamp; The temperature of pre-hinged strain clamp is by the certain remaining long temperature-measuring optical fiber that has conducting in helical metal pipe, because temperature-measuring optical fiber has more than certain, lives forever, and can avoid the cross-sensitivity of strain, thereby realize the temperature survey that not affected by pulling force.Particularly for aerial fiber cables such as built on stilts composite ground wire OPGW, built on stilts composition phase conductor OPPC, All Dielectric Self-Supporting Aerial Optical Fiber Cable ADSS, monitoring optical fiber built-in in pre-hinged strain clamp can be connected with the optical fiber of aerial fiber cable inside, form a complete monitoring link, realize the omnidistance distributed monitoring of aerial fiber cable.
The beneficial effects of the utility model: the utility model increases monitoring optical fiber in original pre-hinged strain clamp structure, structural modification is little, workable, both guaranteed that the original grip of pre-hinged strain clamp was high, the features such as simple had been installed, make it have again temperature, tension monitoring function, thereby monitor in real time the running status of overhead transmission line, be conducive to ensure the safe operation of transmission line.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the pre-hinged strain clamp with monitoring function of the utility model embodiment mono-;
Fig. 2 is the structural representation of strain insulator preformed armor rods of the pre-hinged strain clamp of the utility model embodiment mono-;
Fig. 3 is the connection diagram of the pre-hinged strain clamp with monitoring function of the utility model embodiment bis-;
Fig. 4 is the structural representation of inner reeled silk of the pre-hinged strain clamp of the utility model embodiment bis-.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment 1
Below in conjunction with attached Fig. 1 and 2, the utility model is further elaborated.
A kind of pre-hinged strain clamp with monitoring function, comprise strain insulator preformed armor rods 1 and supporting connection gold utensil 2, described strain insulator preformed armor rods 1 is by the helical metal pipe 102 of 2 helical metal wires 101 and 1 built-in monitoring optical fiber 1021 bonding forming side by side, the strain insulator preformed armor rods 1 being comprised of the helical metal pipe 102 of 2 helical metal wires 101 and built-in monitoring optical fiber 1021 is doubled state and makes return bend 11, thereby return bend 11 is placed on the connecting ring that connects gold utensil 2 strain clamp is connected with shaft tower, the evenly distributed formation blank pipe of the remainder of strain insulator preformed armor rods 1 (both legs) 12.
The external diameter that the internal diameter of the blank pipe that the both legs 11 of strain insulator preformed armor rods 1 form compares applicable wire/optical cable/bracing wire is little, when being wrapped on wire or aerial fiber cable, it at its contact-making surface, produces a uniform compression, and then be converted to frictional force, thereby produce extremely strong tightening force.
For increasing frictional force, the helical metal pipe 102 of built-in monitoring optical fiber 1021 and the inner side of helical metal wire 101 are all bonded with diamond dust 103.
The built-in monitoring optical fiber 1021 of helical metal pipe 102 is to have certain remaining long temperature-measuring optical fiber or the long strain optical fiber of nothing left.Monitor for convenience continuing of optical fiber and monitoring equipment or other optical fiber, the length of the monitoring optical fiber 1021 that expose at helical metal pipe 102 two ends is 0.5～10 meter.
Optical fiber sensing technology is a kind of novel sensing technology, optical fiber itself is exactly transducer, has scene without power supply, the advantages such as anti-electromagnetic interference, wherein take Raman fiber thermometric and Brillouin fiber optic temperature strain measuring technique is representative, in fields such as electric power, petrochemical industry, has all had ripe application.In the present embodiment, the pre-hinged strain clamp with monitoring function is that the built on stilts electrical lead of 110kV is used, the built-in monitoring optical fiber 1021 of helical metal pipe 102 is temperature-measuring optical fiber, and for avoiding the interference of strain to temperature-measuring optical fiber 101, the Yu Changyi of temperature-measuring optical fiber 101 is set to 1 ‰～5 ‰.The two ends of temperature-measuring optical fiber 1021 are connected by optical fiber in the ADSS aerial fiber cable on photodetachment connector box and transmission line side, on the final fiber Raman temp measuring system connecting in transmission line end electric substation, realize the temperature Real-Time Monitoring at pre-hinged strain clamp place.
Embodiment 2
Below in conjunction with accompanying drawing 3 and 4, the utility model is further elaborated.
As different from Example 1, a kind of pre-hinged strain clamp with monitoring function, comprise strain insulator preformed armor rods 1 and supporting connection gold utensil 2, also comprise internal layer preformed armor rods 3, internal layer preformed armor rods 3 is comprised of some height bundles 301, in the present embodiment, internal layer preformed armor rods 3 has 4 son bundles, be respectively 31,32,33 and 34, its neutron beam 31,32 and 33 is all for being adhesively fixed and forming side by side by 4 helical metal wires 301, and 34 of son bundles are adhesively fixed and form side by side by the helical metal pipe 302 of 3 helical metal wires 301 and 1 built-in monitoring optical fiber 3021.For increasing frictional force, helical metal wire 301 and helical metal pipe 302 inner sides are bonded with diamond dust.The internal layer preformed armor rods 3 that comprises above-mentioned 4 son bundles 31,32,33 and 34 is wrapped in wire or aerial fiber cable outer surface successively, and described strain insulator preformed armor rods 1 is wrapped in internal layer preformed armor rods 3 outer surfaces again.Strain insulator preformed armor rods 1 is similar to embodiment 1 with the supporting annexation that is connected gold utensil 2.
For coupling strain insulator preformed armor rods 1 both legs formed blank pipe internal diameter, the external diameter of the helical metal pipe 302 of built-in monitoring optical fiber 3021 is consistent with the external diameter of the helical metal wire 301 of internal layer preformed armor rods bundle.
The built-in monitoring optical fiber 3021 of described helical metal pipe 302 is to have certain remaining long temperature-measuring optical fiber or the long strain optical fiber of nothing left.Monitor for convenience continuing of optical fiber and monitoring equipment or other optical fiber, the length of the monitoring optical fiber 3021 that expose at helical metal pipe 302 two ends is 0.5～10 meter.In the present embodiment, the pre-hinged strain clamp with monitoring function is that the built on stilts composite ground wire OPGW of 220kV uses, the built-in monitoring optical fiber 3021 of helical metal pipe 302 is the long strain optical fiber of nothing left, because 302 strain optical fiber 3021 in helical metal pipe does not have remaining length, the tension force that pre-hinged strain clamp bears is by the long strain optical fiber 3021 of nothing left being passed in helical metal pipe 302, the two ends of strain optical fiber 3021 are connected with telecommunication optical fiber in built on stilts composite ground wire OPGW by connector box, on the final optical fiber Brillouin strain measurement system connecting in transmission line end electric substation, realize the tension force Real-Time Monitoring at pre-hinged strain clamp place.
Claims (6)
1. a pre-hinged strain clamp with monitoring function, comprise strain insulator preformed armor rods and supporting connection gold utensil, described strain insulator preformed armor rods has been folded to form return bend, it is characterized in that described strain insulator preformed armor rods is by some helical metal wires and at least one built-in bonding the forming of helical metal tube side-by-side of monitoring optical fiber, described return bend is placed on the connecting ring of described supporting connection gold utensil, the evenly distributed formation blank pipe of the remainder of described strain insulator preformed armor rods except described return bend.
2. a kind of pre-hinged strain clamp with monitoring function as claimed in claim 1, is characterized in that the inner side of described helical metal pipe and described helical metal wire is all bonded with diamond dust.
3. a kind of pre-hinged strain clamp with monitoring function as claimed in claim 1, characterized by further comprising the internal layer preformed armor rods by some height Shu Zucheng, at least one height bundle of described internal layer preformed armor rods includes the helical metal pipe of a built-in monitoring optical fiber, helical metal pipe and the some helical metal wires of described built-in monitoring optical fiber are adhesively fixed side by side, and a son that forms internal layer preformed armor rods is restrainted, the described internal layer preformed armor rods that includes some height bundles is wrapped in wire or aerial fiber cable outer surface successively, described strain insulator preformed armor rods is wrapped in internal layer preformed armor rods outer surface again.
4. a kind of pre-hinged strain clamp with monitoring function as claimed in claim 3, is characterized in that the external diameter of helical metal pipe of described built-in monitoring optical fiber and the external diameter of the helical metal wire of described internal layer preformed armor rods bundle are consistent.
5. a kind of pre-hinged strain clamp with monitoring function as described in claim 1 to 4 any one, the built-in optical fiber of helical metal pipe that it is characterized in that described built-in monitoring optical fiber is to have certain remaining long temperature-measuring optical fiber or the long strain optical fiber of nothing left.
6. a kind of pre-hinged strain clamp with monitoring function as described in claim 1 to 4 any one, is characterized in that the length of the monitoring optical fiber that expose at described helical metal pipe two ends is 0.5～10 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894725.0U CN203734260U (en) | 2013-12-31 | 2013-12-31 | Pre-twisted type strain clamp with monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894725.0U CN203734260U (en) | 2013-12-31 | 2013-12-31 | Pre-twisted type strain clamp with monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734260U true CN203734260U (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320894725.0U Withdrawn - After Issue CN203734260U (en) | 2013-12-31 | 2013-12-31 | Pre-twisted type strain clamp with monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203734260U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730872A (en) * | 2013-12-31 | 2014-04-16 | 宁波诺驰光电科技发展有限公司 | Pre-twisted type strain clamp with monitoring function |
| CN105024305A (en) * | 2015-07-15 | 2015-11-04 | 国网河南省电力公司濮阳供电公司 | Tension tower drain wire fracture-free construction method |
| CN105044395A (en) * | 2015-07-09 | 2015-11-11 | 国网河南省电力公司濮阳供电公司 | Double-split wire on-line monitoring device installation fixture and installation method |
| CN109449626A (en) * | 2017-08-04 | 2019-03-08 | 预制管线产品公司 | Spiral bridging plug |
| CN114777851A (en) * | 2022-06-22 | 2022-07-22 | 南方电网科学研究院有限责任公司 | Long-term monitoring devices of strain clamp crimping |
-
2013
- 2013-12-31 CN CN201320894725.0U patent/CN203734260U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730872A (en) * | 2013-12-31 | 2014-04-16 | 宁波诺驰光电科技发展有限公司 | Pre-twisted type strain clamp with monitoring function |
| CN103730872B (en) * | 2013-12-31 | 2016-04-06 | 浙江中欣动力测控技术有限公司 | A kind of pre-hinged strain clamp with monitoring function |
| CN105044395A (en) * | 2015-07-09 | 2015-11-11 | 国网河南省电力公司濮阳供电公司 | Double-split wire on-line monitoring device installation fixture and installation method |
| CN105044395B (en) * | 2015-07-09 | 2017-10-10 | 国网河南省电力公司濮阳供电公司 | Double bundle conductor on-Line Monitor Device installs fixture and installation method |
| CN105024305A (en) * | 2015-07-15 | 2015-11-04 | 国网河南省电力公司濮阳供电公司 | Tension tower drain wire fracture-free construction method |
| CN109449626A (en) * | 2017-08-04 | 2019-03-08 | 预制管线产品公司 | Spiral bridging plug |
| CN114777851A (en) * | 2022-06-22 | 2022-07-22 | 南方电网科学研究院有限责任公司 | Long-term monitoring devices of strain clamp crimping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160406 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |