CN112290460A - Flexible mineral insulated cable construction method - Google Patents
Flexible mineral insulated cable construction method Download PDFInfo
- Publication number
- CN112290460A CN112290460A CN202011115571.1A CN202011115571A CN112290460A CN 112290460 A CN112290460 A CN 112290460A CN 202011115571 A CN202011115571 A CN 202011115571A CN 112290460 A CN112290460 A CN 112290460A
- Authority
- CN
- China
- Prior art keywords
- cable
- cables
- bracket
- fireproof
- vertical
- Prior art date
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 45
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 27
- 239000011707 mineral Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
The invention has provided the construction method of the insulating cable of flexible mineral, it is a technical field of electric wire and cable engineering, the construction method of the insulating cable of this flexible mineral includes the steps such as the shape selection of the cable support and site location, etc., the invention passes the planning of the cable route in advance, including the wall body is processed, the support is made and installed, under guaranteeing the firm condition, lay the cable, after sorting according to the cable model specification, fix with the ribbon, guarantee the construction quality of site, the construction is simple, convenient, swift, have greater promotion to construction progress and project quality, have got better economic benefits and social benefits, well solved the problem that the ordinary laying method needs many bridges, the construction input is large, the construction space is small, the construction period, the launching type lays the part and adopts the non-construction mode, has reduced the construction cost; the tree-dry type laying part adopts the prefabricated branch cable and adopts the cable support to lay, successfully solves the fire-proof requirement of the super high-rise to the cable.
Description
Technical Field
The invention belongs to the technical field of wire and cable engineering, and particularly relates to a construction method of a flexible mineral insulated cable.
Background
Compared with the traditional rigid mineral insulated cable, the flexible mineral insulated cable is composed of copper stranded wires, mineral compound insulation and a mineral compound sheath. It adopts flexible construction, and the main material all adopts inorganic material, has compensatied defects such as the structure is hard, easy burning, poisonous to have some advantages that other cables do not have, if: fire resistance, large current-carrying capacity, impact voltage resistance, mechanical damage resistance, halogen-free, non-toxic, explosion-proof, waterproof, corrosion-resistant, long service life, safety, overload resistance, high temperature resistance, low cost and the like. The common cable is made of organic polymer materials, so that the common cable is easy to carbonize under the flame condition and loses the insulation effect. Since the main materials of the flexible mineral-insulated fireproof cable are all composed of inorganic minerals or mineral compounds, the flexible mineral-insulated fireproof cable cannot cause fire and cannot burn or support combustion. The materials generally have higher melting points of more than 1500 ℃, so the fireproof cable can play a normal power transmission function even if being used under the condition of flame, and is a fireproof cable in a real sense.
In the prior art, the rigid mineral insulated cable is limited by the production process, and when the cable is used as a trunk line, the branch position cannot meet the fireproof requirement; the common cable laying path needs to be supported by a bridge frame, so that the engineering cost is increased, and therefore, the flexible mineral insulated cable construction method is obtained.
Disclosure of Invention
The embodiment of the invention provides a construction method of a flexible mineral insulated cable, which aims to solve the problem that the branch position of the existing rigid mineral insulated cable cannot meet the fireproof requirement when the existing rigid mineral insulated cable is used as a trunk line due to the limitation of a production process; the common cable laying path needs to be supported by a bridge, so that the engineering cost is increased.
In view of the above problems, the technical solution proposed by the present invention is:
the invention provides a construction method of a flexible mineral insulated cable, which is characterized by comprising the following steps:
s1, selecting the type of the cable support, and selecting a horizontal cable support and a vertical cable support according to the design requirements of a drawing and the actual situation of a site;
s2, positioning on site, namely positioning the long-distance barrier-free object by adopting infrared rays according to the actual trend and the laying path of the cable, positioning the short-distance vertical section with the barrier by adopting a vertical line, adjusting according to the position of the on-site barrier, determining the position by adopting a top layer suspension line mode and marking on the wall surface;
s3, checking and processing the wall, performing technical bottom crossing on constructors at the initial construction stage of the secondary structure wall, and building the construction by using a pre-support concrete block as a building block at a position 1.5-1.8 m above each layer of well, thereby ensuring that the cable support is installed firmly enough;
and S4, mounting a bracket, namely mounting the prefabricated horizontal cable laying bracket and the prefabricated vertical cable laying bracket according to field positioning, wherein for the top surface with heat insulation, the original heat insulation layer needs to be removed when the bracket is mounted, the bracket is fixed on the concrete surface, and the removing range is coordinated with the pivot. The two sides of the settlement joint are respectively provided with an encryption bracket across the settlement joint, and the bracket path is encrypted at the turning position while maintaining a certain radian;
s5, performing a bracket stress test, inspecting the horizontal and vertical cable brackets after the installation is completed, and extracting 5% of the brackets to perform a tension test, wherein the tension born by each horizontal bracket is more than 1400KG, and the tension born by each vertical bracket is more than 700 KG;
s6, laying cables, namely laying flexible mineral insulated cables on a cable support according to a branching circuit shown in the drawing, laying the cables laid horizontally and hierarchically at the uppermost layer, laying a layer close to a wall surface at the vertical cables, selecting the cables with smaller model specifications as much as possible at the inner layer and the larger cables at the outermost layer, adopting mechanical and manual joint operation in the laying process, adopting a damping retarder to attenuate the gravity acceleration of the vertical cables, guiding the cables to the upper part or the inner part of the support through manual cooperation during laying, simultaneously checking the state of the support, stopping the operation in time if the cables are loosened, and reinforcing the support;
s7, reinforcing the bracket, checking the bracket one by one after the cable is laid, horizontally and vertically adjusting and reinforcing the inclined bracket, reinforcing the damaged or loosened bracket, and simultaneously encrypting the area with large cable sag;
s8, fixing cables, fixing the cables and the contact points of the supports after the supports are processed, distributing the cables according to the line diameter of the cables on site in a classified mode, uniformly distributing the cables, fixing the cables by adopting cable ties, wherein the binding directions of the cable ties must be kept consistent, cutting off redundant cable ties, ensuring the attractiveness while ensuring the firm fixation of the cables, and distributing the dead weight of the vertical cables on each support in an average mode;
s9, fireproof sealing, namely fireproof sealing is carried out on cable holes at the positions of penetrating walls and floors, the sealing is carried out in the form of fireproof partition plates, fireproof pillows and fireproof mud, the size of a well is measured according to the actual situation on site, fireproof plates with proper shapes are manufactured according to the size of the cable, the two sides of the holes are sealed by the fireproof partition plates, the fireproof pillows with corresponding fireproof grades are used for filling the fireproof plates tightly, gaps around the fireproof plates are sealed by the fireproof mud, and the sealing is guaranteed to meet the designed fireproof grade requirement;
and S10, hanging nameplates on the cables in the cable well, the transformation and distribution room and the distribution box after plugging, wherein the nameplates are the starting point, the terminal point, the model specification and the total length of the cables.
In a preferred embodiment of the present invention, in step S4, each layer of cables on the horizontal cabling rack has less than 30 cables, and the number of cables is less than 3.
In a preferred embodiment of the present invention, in step S4, there are less than 15 cables per layer and less than 2 cables per layer on the vertically-laid cable support
As a preferred technical solution of the present invention, in the step S5, all of the horizontal cable brackets and the vertical cable brackets are fixed by M10 × 85 expansion bolts, the buried depth is greater than 60mm, and the tensile force borne by the single body is greater than 700 KG.
As a preferable technical solution of the present invention, after the cables are laid in step S6, the cables are arranged in order on the horizontal cable tray or the vertical cable tray, all the cables are arranged in parallel and cannot cross, the cable pitch is kept at about 1cm, and the cable arc top and the horizontal cable tray or the vertical cable tray are kept within 3 cm.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, through planning a cable path in advance, including wall body processing and bracket manufacturing and installation, cable laying is carried out under the condition of ensuring firmness, and after classification and arrangement according to the cable model specification, the cable is fixed by a binding belt, so that the field construction quality is ensured.
(2) The construction method is simple, convenient and quick, greatly promotes the construction progress and the engineering quality, obtains better economic benefit and social benefit, and well solves the problems of more bridges, large construction investment, small construction space and long construction period required by the common laying method.
(3) The launching type laying part adopts a bridge-frame-free construction mode, so that the construction cost is reduced; the tree-dry type laying part adopts the prefabricated branch cable and adopts the cable support to lay, successfully solves the fire-proof requirement of the super high-rise to the cable.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a flow chart of a construction method of the flexible mineral insulated cable disclosed by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Examples
Referring to the attached figure 1, the invention provides a technical scheme: the construction method of the flexible mineral insulated cable comprises the following steps:
s1, selecting the type of the cable support, and selecting a horizontal cable support and a vertical cable support according to the design requirements of a drawing and the actual situation of a site;
specifically, the fixed positions of the horizontal cable laying supports and the top surface are made of 50 x 5 steel angles, the horizontal cable laying supports and the top surface are fixed on a ceiling through expansion bolts, the vertical rods and the horizontal support rods are made of DN25 galvanized steel pipes to reduce sliding friction of cables in the horizontal laying process, the horizontal support rods with different layers are manufactured according to the number of the cables, the vertical rods, the horizontal rods and the steel angles are firmly welded, the vertical cable laying supports are made of 50 x 5 steel angles and are made into a door shape, meanwhile, vertical supports (in a triangular structure) are needed to be arranged, the vertical cable laying supports are fixed on the wall surface along the wall, after the manufacturing is completed, the anti-rust treatment is carried out on the welding positions, and the color treatment.
S2, positioning on site, namely positioning the long-distance barrier-free object by adopting infrared rays according to the actual trend and the laying path of the cable, positioning the short-distance vertical section with the barrier by adopting a vertical line, adjusting according to the position of the on-site barrier, determining the position by adopting a top layer suspension line mode and marking on the wall surface;
specifically, the horizontal cabling support keeps the same straight line along the cable laying direction, and the same height is kept as far as possible to the cable when laying horizontally to guarantee actual finished product effect, the position is confirmed and at the wall sign to the mode that vertical cabling support adopted the top layer suspension wire, guarantees that vertical cabling support position is unified.
S3, checking and processing the wall, performing technical bottom crossing on constructors at the initial construction stage of the secondary structure wall, and building the construction by using a pre-support concrete block as a building block at a position 1.5-1.8 m above each layer of well, thereby ensuring that the cable support is installed firmly enough;
specifically, after the positioning process is finished, the wall surface along the way needs to be checked, and the position of the mounting bracket is ensured to be a concrete block; if the position of the concrete block is not found to be replaced, the wall surface of the mounting bracket area is subjected to brick replacement treatment according to field positioning, and the original aerated block or the interlocking brick is replaced by the precast concrete block, so that the bracket has firmer attachment points during mounting.
And S4, mounting a bracket, namely mounting the prefabricated horizontal cable laying bracket and the prefabricated vertical cable laying bracket according to field positioning, wherein for the top surface with heat insulation, the original heat insulation layer needs to be removed when the bracket is mounted, the bracket is fixed on the concrete surface, and the removing range is coordinated with the pivot. The two sides of the settlement joint are respectively provided with an encryption bracket across the settlement joint, and the bracket path is encrypted at the turning position while maintaining a certain radian;
specifically, the horizontal and vertical cable holders must be mounted on a wall with sufficient adhesion to ensure sufficient support after the cable is laid.
S5, performing a bracket stress test, inspecting the horizontal and vertical cable brackets after the installation is completed, and extracting 5% of the brackets to perform a tension test, wherein the tension born by each horizontal bracket is more than 1400KG, and the tension born by each vertical bracket is more than 700 KG;
s6, laying cables, namely laying flexible mineral insulated cables on a cable support according to a branching circuit shown in the drawing, laying the cables laid horizontally and hierarchically at the uppermost layer, laying a layer close to a wall surface at the vertical cables, selecting the cables with smaller model specifications as much as possible at the inner layer and the larger cables at the outermost layer, adopting mechanical and manual joint operation in the laying process, adopting a damping retarder to attenuate the gravity acceleration of the vertical cables, guiding the cables to the upper part or the inner part of the support through manual cooperation during laying, simultaneously checking the state of the support, stopping the operation in time if the cables are loosened, and reinforcing the support;
specifically, a special hanging head hanger is arranged at the top end of the prefabricated branch cable, the hanging head is fixed on the topmost layer where the cable is located, the hanger is connected to the hanging head after laying is completed, meanwhile, the self weight of the vertical cable is evenly distributed on the vertical laying cable supports on each layer, and the supports on the topmost layer cannot bear the whole weight.
S7, reinforcing the bracket, checking the bracket one by one after the cable is laid, horizontally and vertically adjusting and reinforcing the inclined bracket, reinforcing the damaged or loosened bracket, and simultaneously encrypting the area with large cable sag;
s8, fixing cables, fixing the cables and the contact points of the supports after the supports are processed, distributing the cables according to the line diameter of the cables on site in a classified mode, uniformly distributing the cables, fixing the cables by adopting cable ties, wherein the binding directions of the cable ties must be kept consistent, cutting off redundant cable ties, ensuring the attractiveness while ensuring the firm fixation of the cables, and distributing the dead weight of the vertical cables on each support in an average mode;
s9, fireproof sealing, namely fireproof sealing is carried out on cable holes at the positions of penetrating walls and floors, the sealing is carried out in the form of fireproof partition plates, fireproof pillows and fireproof mud, the size of a well is measured according to the actual situation on site, fireproof plates with proper shapes are manufactured according to the size of the cable, the two sides of the holes are sealed by the fireproof partition plates, the fireproof pillows with corresponding fireproof grades are used for filling the fireproof plates tightly, gaps around the fireproof plates are sealed by the fireproof mud, and the sealing is guaranteed to meet the designed fireproof grade requirement;
and S10, hanging nameplates on the cables in the cable well, the transformation and distribution room and the distribution box after plugging, wherein the nameplates are the starting point, the terminal point, the model specification and the total length of the cables.
In the embodiment of the present invention, in the step S4, there are less than 30 cables per layer and less than 3 cables per layer on the horizontal cabling rack, in the step S4, there are less than 15 cables per layer and less than 2 cables per layer on the vertical cabling rack; the spacing between the horizontal cabling rack and the vertical cabling installation is as follows:
in the embodiment of the present invention, in the step S5, the horizontal cabling rack and the vertical cabling rack are all fixed by using M10 × 85 expansion bolts, the burial depth is greater than 60mm, and the tensile force borne by the single body is greater than 700 KG.
In the embodiment of the present invention, after the cables are laid in step S6, the cables are arranged in order on the horizontal cable tray or the vertical cable tray, all the cables are arranged in parallel and must not cross, the cable pitch is kept at about 1cm, and the cable arc top is kept within 3cm from the horizontal cable tray or the vertical cable tray.
According to the construction method of the flexible mineral insulated cable, the cable path is planned in advance, the cable is laid under the condition of ensuring firmness, the cable is fixed by using the binding belt after being classified and sorted according to the type and specification of the cable, the on-site construction quality is ensured, the construction is simple, convenient and quick, the construction progress and the engineering quality are greatly promoted, better economic benefit and social benefit are obtained, the problems that a common laying method needs more bridges, the construction investment is large, the construction space is small and the construction period is long are well solved, the launching type laying part adopts a bridge-free construction mode, and the construction cost is reduced; the tree-dry type laying part adopts the prefabricated branch cable and adopts the cable support to lay, successfully solves the fire-proof requirement of the super high-rise to the cable.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The construction method of the flexible mineral insulated cable is characterized by comprising the following steps:
s1, selecting the type of the cable support, and selecting a horizontal cable support and a vertical cable support according to the design requirements of a drawing and the actual situation of a site;
s2, positioning on site, namely positioning the long-distance barrier-free object by adopting infrared rays according to the actual trend and the laying path of the cable, positioning the short-distance vertical section with the barrier by adopting a vertical line, adjusting according to the position of the on-site barrier, determining the position by adopting a top layer suspension line mode and marking on the wall surface;
s3, checking and processing the wall, performing technical bottom crossing on constructors at the initial construction stage of the secondary structure wall, and building the construction by using a pre-support concrete block as a building block at a position 1.5-1.8 m above each layer of well, thereby ensuring that the cable support is installed firmly enough;
and S4, mounting a bracket, namely mounting the prefabricated horizontal cable laying bracket and the prefabricated vertical cable laying bracket according to field positioning, wherein for the top surface with heat insulation, the original heat insulation layer needs to be removed when the bracket is mounted, the bracket is fixed on the concrete surface, and the removing range is coordinated with the pivot. The two sides of the settlement joint are respectively provided with an encryption bracket across the settlement joint, and the bracket path is encrypted at the turning position while maintaining a certain radian;
s5, performing a bracket stress test, inspecting the horizontal and vertical cable brackets after the installation is completed, and extracting 5% of the brackets to perform a tension test, wherein the tension born by each horizontal bracket is more than 1400KG, and the tension born by each vertical bracket is more than 700 KG;
s6, laying cables, namely laying flexible mineral insulated cables on a cable support according to a branching circuit shown in the drawing, laying the cables laid horizontally and hierarchically at the uppermost layer, laying a layer close to a wall surface at the vertical cables, selecting the cables with smaller model specifications as much as possible at the inner layer and the larger cables at the outermost layer, adopting mechanical and manual joint operation in the laying process, adopting a damping retarder to attenuate the gravity acceleration of the vertical cables, guiding the cables to the upper part or the inner part of the support through manual cooperation during laying, simultaneously checking the state of the support, stopping the operation in time if the cables are loosened, and reinforcing the support;
s7, reinforcing the bracket, checking the bracket one by one after the cable is laid, horizontally and vertically adjusting and reinforcing the inclined bracket, reinforcing the damaged or loosened bracket, and simultaneously encrypting the area with large cable sag;
s8, fixing cables, fixing the cables and the contact points of the supports after the supports are processed, distributing the cables according to the line diameter of the cables on site in a classified mode, uniformly distributing the cables, fixing the cables by adopting cable ties, wherein the binding directions of the cable ties must be kept consistent, cutting off redundant cable ties, ensuring the attractiveness while ensuring the firm fixation of the cables, and distributing the dead weight of the vertical cables on each support in an average mode;
s9, fireproof sealing, namely fireproof sealing is carried out on cable holes at the positions of penetrating walls and floors, the sealing is carried out in the form of fireproof partition plates, fireproof pillows and fireproof mud, the size of a well is measured according to the actual situation on site, fireproof plates with proper shapes are manufactured according to the size of the cable, the two sides of the holes are sealed by the fireproof partition plates, the fireproof pillows with corresponding fireproof grades are used for filling the fireproof plates tightly, gaps around the fireproof plates are sealed by the fireproof mud, and the sealing is guaranteed to meet the designed fireproof grade requirement;
and S10, hanging nameplates on the cables in the cable well, the transformation and distribution room and the distribution box after plugging, wherein the nameplates are the starting point, the terminal point, the model specification and the total length of the cables.
2. The flexible mineral insulated cable construction method of claim 1, wherein in step S4 there are less than 30 cables per layer and less than 3 cables per layer on the horizontal cabling rack.
3. The flexible mineral insulated cable construction method of claim 1, wherein in step S4 there are less than 15 cables per layer and less than 2 cables per layer on the vertical cabling rack.
4. The method of claim 1, wherein the horizontal and vertical cable supports are all fixed by M10 x 85 expansion bolts in step S5, the buried depth is greater than 60mm, and the tension of the single body is greater than 700 KG.
5. The method for constructing a flexible mineral insulated cable according to claim 1, wherein the cables are arranged in order on the horizontal cable support or the vertical cable support after the cables are laid in step S6, all the cables are arranged in parallel and are not crossed, the cable pitch is kept about 1cm, and the cable arc top is kept within 3cm from the horizontal cable support or the vertical cable support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115571.1A CN112290460A (en) | 2020-10-19 | 2020-10-19 | Flexible mineral insulated cable construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115571.1A CN112290460A (en) | 2020-10-19 | 2020-10-19 | Flexible mineral insulated cable construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112290460A true CN112290460A (en) | 2021-01-29 |
Family
ID=74497803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011115571.1A Pending CN112290460A (en) | 2020-10-19 | 2020-10-19 | Flexible mineral insulated cable construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112290460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843928A (en) * | 2022-04-19 | 2022-08-02 | 北京国网先行电力建设有限公司 | Rapid construction method for urban high-low voltage distribution project |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358322A (en) * | 2014-11-12 | 2015-02-18 | 国网辽宁省电力有限公司鞍山供电公司 | Construction method and structure of detachable fire plug convenient for increasing capacity of cable |
| CN205811463U (en) * | 2016-07-15 | 2016-12-14 | 宝上电缆有限公司 | Prefabricated branch type flexible mineral insulation fireproof cable dividing box |
-
2020
- 2020-10-19 CN CN202011115571.1A patent/CN112290460A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358322A (en) * | 2014-11-12 | 2015-02-18 | 国网辽宁省电力有限公司鞍山供电公司 | Construction method and structure of detachable fire plug convenient for increasing capacity of cable |
| CN104358322B (en) * | 2014-11-12 | 2017-02-08 | 国网辽宁省电力有限公司鞍山供电公司 | Construction method of detachable fire plug convenient for increasing capacity of cable |
| CN205811463U (en) * | 2016-07-15 | 2016-12-14 | 宝上电缆有限公司 | Prefabricated branch type flexible mineral insulation fireproof cable dividing box |
Non-Patent Citations (1)
| Title |
|---|
| 杨仁光: "《柔性矿物绝缘电缆的施工技术及质量控制》", 《绿色环保建材》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843928A (en) * | 2022-04-19 | 2022-08-02 | 北京国网先行电力建设有限公司 | Rapid construction method for urban high-low voltage distribution project |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0039587A2 (en) | Fire resistant sealing system for holes in fire resistant building partitions and method of forming the system | |
| CN104242191B (en) | Benzene hydrogenation engineering gauge pipe wire routing method | |
| CN112290460A (en) | Flexible mineral insulated cable construction method | |
| CN202810314U (en) | 220kV T-shaped double-circuit drilling tower | |
| CN207638266U (en) | A kind of reinforced cable bridge | |
| CN104577914B (en) | Fire resistant busbar and its construction method | |
| CN113565135B (en) | Cable carrier construction method and cable carrier structure | |
| CN213716572U (en) | High-flame-retardant intercity rail transit cable | |
| CN210722532U (en) | Beam-bearing aerial cable | |
| CN205604722U (en) | A controlling means that is used for pre -buried electric spool of in bank to go out floor interval and straightness that hangs down | |
| CN213980169U (en) | Composite material cross arm tower | |
| CN213716571U (en) | Fire-resistant subway signal cable | |
| RU44782U1 (en) | FLEXIBLE LONG PIPE | |
| CN220325231U (en) | A comprehensive bracket for side wall fixing trough boxes | |
| CN111653983A (en) | Construction process of fire-resistant mineral cable | |
| CN221589692U (en) | Protection structure of longitudinal laying pipeline in subway open cut section | |
| CN216289974U (en) | Electrical cable supporting device for building engineering management | |
| Sandebs | Manufacture of cable and overhead equipment | |
| CN110685223A (en) | Sealing material construction process suitable for snow melting and deicing of bridge deck | |
| CN213980168U (en) | Composite cross arm tower | |
| CN114094520B (en) | Cross arm device for fixing bridge cable and construction method | |
| CN214460604U (en) | A bury piping lane system secretly for ice field | |
| US20220111237A1 (en) | Distribution pole and method of fireproof distribution pole installation | |
| CN207434720U (en) | A kind of mineral insulated cable wire-unfolding rack | |
| CN2655388Y (en) | Flame-resistance wear-proof woven protective layer insulative cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210129 |
|
| RJ01 | Rejection of invention patent application after publication |