CN-122014923-A - Thermal insulation pipe of prefabricated optical fiber and manufacturing method

CN122014923ACN 122014923 ACN122014923 ACN 122014923ACN-122014923-A

Abstract

The invention discloses a prefabricated optical fiber insulation pipe and a manufacturing method thereof, wherein the prefabricated optical fiber insulation pipe comprises a working steel pipe arranged on a core part of the insulation pipe, an outer protection pipe is arranged on the outer side of the working steel pipe, the diameter of the outer protection pipe is larger than that of the working steel pipe, an interlayer gap is formed between the outer protection pipe and the working steel pipe, a threading pipe is arranged in the interlayer gap, an optical fiber is arranged in the threading pipe, the threading pipe is fixed through a fixing device, the fixing device is fixedly arranged on the outer side wall of the working steel pipe, and a foaming tool is further arranged in the interlayer gap. The problem of unable heat supply pipeline heat preservation performance and accurate monitoring is solved, the insulating tube is laid with optic fibre unsynchronized, and lay optic fibre outside the insulating tube and easily cause the destruction when the trench is backfilled, easily receive cushion infiltration and other factors to influence and cause the inaccurate problem of monitoring effect.

Inventors

NI FENGYAO
KONG DEBIN
ZHANG YAN
DONG PING
DU HUANFENG
YANG CUIWEI
SUN ZHIZHUANG

Assignees

山东东宏管业股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (10)

1. A prefabricated optical fiber insulation pipe is characterized by comprising a working steel pipe arranged on a core part of the insulation pipe, wherein an outer protection pipe is arranged on the outer side of the working steel pipe, the diameter of the outer protection pipe is larger than that of the working steel pipe, an interlayer gap is formed between the outer protection pipe and the working steel pipe, a threading pipe is arranged in the interlayer gap, an optical fiber is arranged in the threading pipe, the threading pipe is fixed through a fixing device, the fixing device is fixedly arranged on the outer side wall of the working steel pipe, and a foaming tool is further arranged in the interlayer gap.
2. The preformed optical fiber insulation pipe of claim 1, wherein the fixing device is a fixing bracket or a threading pipe clamp, the fixing bracket is used for directly fixing the threading pipe on the working steel pipe, and the threading pipe clamp is used for fixing the threading pipe by pre-tightening the threading pipe.
3. The heat preservation pipe for the prefabricated optical fiber of claim 2, wherein the fixing support is a fixing clamping groove support or a quick fixing buckle, the fixing clamping groove support comprises a wire pipe clamping groove, a base and a fixing hole, the wire pipe clamping groove is arranged above the base, the fixing hole is arranged at the lower part of the base, and the base is arranged on the outer side wall of the working steel pipe through the fixing hole.
4. The heat-insulating tube for prefabricated optical fibers of claim 2, wherein the threading tube clamp comprises two threading tube clamps, a pre-tightening spring and tube orifice fixing clamps, wherein the two tube orifice fixing clamps are respectively arranged at two ends of the working steel tube, one end of the pre-tightening spring is connected with the tube orifice fixing clamps, the other end of the pre-tightening spring is connected with the threading tube clamps, and the threading tube clamps are used for clamping the threading tube and pre-tightening the threading tube clamps through the pre-tightening spring.
5. A preformed optical fiber insulation pipe as claimed in claim 3, wherein said quick-fixing buckle comprises a buckle groove and a screw hole, said screw hole is provided at the bottom of said buckle groove and is fixed to the outer side wall of said working steel pipe by a wood bracket.
6. The heat-insulating tube for prefabricated optical fibers according to claim 4, wherein the number of the pre-tightening springs is four, the tube orifice fixing clamps are two, each tube orifice fixing clamp is composed of two clamping blocks, one ends of the two clamping blocks are connected through elastic materials, fasteners are arranged at the other ends of the two clamping blocks and used for clamping the two clamping blocks, semicircular grooves are formed in opposite sides of the two clamping blocks and used for placing the threading tubes, and each pre-tightening spring is fixedly connected with one clamping block.
7. The prefabricated optical fiber insulation pipe according to claim 5, wherein a plurality of fixing slot brackets or quick fixing buckles are arranged on the outer side wall of the working steel pipe at equal intervals for regularly fixing the threading pipe on the working steel pipe.
8. The thermal insulation pipe for prefabricated optical fibers according to claim 1, wherein the threading pipes are formed by splicing multiple sections, a connector is arranged between two adjacent threading pipes, the connector is a straight connector or a plug connector, the straight connector is in a circular pipe shape, and the two adjacent threading pipes are directly inserted into the straight connector for connection.
9. The preformed optical fiber insulation pipe as claimed in claim 8, wherein the plug comprises a socket portion and a spigot portion, a groove is provided at a junction between the socket portion and the spigot portion for reducing threading resistance, the socket portion is connected to an outer side wall of the threading pipe, and the spigot portion is connected to an inner side wall of the threading pipe.
10. A method of manufacturing a preformed optical fiber insulation pipe according to any one of claims 1-9, comprising the steps of: S1, if a fixing bracket is used for fixing the threading pipe, marking the mounting position of a fixing clamping groove bracket on the outer side wall of a working steel pipe, ensuring that a plurality of brackets are arranged at equal intervals, and mounting and fixing the fixing clamping groove bracket on the outer side wall of the working steel pipe through a fixing hole at the lower part of a base; If the threading pipe clamp is used, pipe orifice fixing clamps are arranged at two ends of the working steel pipe, two clamping blocks are connected with the pipe orifice fixing clamps through a pre-tightening spring, and the subsequent threading pipe installation and pre-tightening are prepared; S2, if direct joint connection is adopted, the end parts of two adjacent sections of threading pipes are directly inserted into the round tubular direct joint, if plug joint connection is adopted, a socket part is connected to the outer side wall of one section of threading pipe, and a socket part is connected to the inner side wall of the other section of threading pipe; s3, placing the spliced threading pipe in a threading pipe clamping groove of a fixing clamping groove bracket, and fixing the threading pipe on a working steel pipe through the clamping groove; for the condition of using the threading pipe clamp, placing the threading pipe in a semicircular groove of the pipe orifice fixing clamp, clamping the threading pipe by using a fastener, and pre-tightening the threading pipe by using a pre-tightening spring; S4, sleeving the outer protective tube on the outer side of the working steel tube, forming a set interlayer gap between the outer protective tube and the working steel tube, performing foaming treatment on the interlayer gap by using a foaming tool, filling the heat-insulating foaming material in the interlayer gap, and completing manufacturing of the prefabricated optical fiber heat-insulating tube after the foaming material is cured and molded.

Description

Thermal insulation pipe of prefabricated optical fiber and manufacturing method Technical Field The invention belongs to the technical field of heating pipelines, and particularly relates to a prefabricated optical fiber heat preservation pipe and a manufacturing method thereof. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. With the explosive growth of heat supply demands in cold areas, the heat loss problem caused by the old heat supply pipe network due to the annual repair loss and the technology lag is increasingly remarkable, and the urgent demands for large-scale construction of long-distance heat supply pipelines are met due to the fact that large gaps exist in new area heat supply coverage. The long-distance pipeline has the following problems in the long-time operation process, the pipeline is continuously eroded by severe natural environment, and the pipeline is easily damaged or aged due to external factors such as third party construction, geological settlement and the like. When the pipeline is subjected to the problem, the heat supply efficiency is greatly reduced, a large amount of heat energy is lost, the operation and maintenance cost of the pipeline is obviously increased, the economic benefit and the energy conveying stability of the central heating system are seriously affected, and the heat insulation performance and the accuracy of the novel heat supply pipeline cannot be monitored. Disclosure of Invention According to the heat-insulating pipe with the prefabricated optical fiber and the manufacturing method thereof, the problems that heat-insulating performance and accurate monitoring of a heat supply pipeline cannot be achieved, the heat-insulating pipe is not synchronous with optical fiber laying, the optical fiber laid outside the heat-insulating pipe is easy to damage during pipe ditch backfilling, and monitoring effect is inaccurate due to influence of cushion water seepage and other factors are solved. In order to achieve the above object, the present invention is realized by the following technical scheme: The invention provides a prefabricated optical fiber insulation pipe which comprises a working steel pipe arranged on a core part of the insulation pipe, wherein an outer protection pipe is arranged on the outer side of the working steel pipe, the diameter of the outer protection pipe is larger than that of the working steel pipe, an interlayer gap is formed between the outer protection pipe and the working steel pipe, a threading pipe is arranged in the interlayer gap, an optical fiber is arranged in the threading pipe, the threading pipe is fixed through a fixing device, the fixing device is fixedly arranged on the outer side wall of the working steel pipe, and a foaming tool is further arranged in the interlayer gap. As a further implementation mode, the fixing device is a fixing support or a threading pipe clamp, the fixing support is used for directly fixing the threading pipe on the working steel pipe, and the threading pipe clamp is used for fixing the threading pipe by pre-tightening the threading pipe. The wire pipe clamping groove is arranged above the base, the fixing hole is arranged at the lower part of the base, and the base is arranged on the outer side wall of the working steel pipe through the fixing hole. The threading pipe clamp comprises a threading pipe clamp, a pre-tightening spring and pipe orifice fixing clamps, wherein the two pipe orifice fixing clamps are respectively arranged at two ends of the working steel pipe, one end of the pre-tightening spring is connected with the pipe orifice fixing clamps, the other end of the pre-tightening spring is connected with the threading pipe clamp, and the threading pipe clamp is used for clamping the threading pipe and pre-tightening the threading pipe through the pre-tightening spring. As a further implementation manner, the quick fixing buckle comprises a buckle groove and a screw hole, wherein the screw hole is arranged at the bottom of the buckle groove and is fixed on the outer side wall of the working steel pipe through a wood bracket. The pipe orifice fixing clamp comprises two clamping blocks, one ends of the two clamping blocks are connected through elastic materials, fasteners are arranged at the other ends of the two clamping blocks and used for clamping the two clamping blocks, semicircular grooves are formed in opposite sides of the two clamping blocks and used for placing the threading pipes, and each pre-tightening spring is fixedly connected with one clamping block. As a further implementation mode, the fixing clamping groove brackets or the quick fixing buckles are arranged in a plurality, are arranged on the outer side wall of the working steel pipe at equal intervals and are used for regularly fixing the threading pipe on the working steel pipe. As a further implementation mode, th