CN110086113B - Cable subsection overhauling device for humid environment - Google Patents
Cable subsection overhauling device for humid environment Download PDFInfo
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- CN110086113B CN110086113B CN201910439920.6A CN201910439920A CN110086113B CN 110086113 B CN110086113 B CN 110086113B CN 201910439920 A CN201910439920 A CN 201910439920A CN 110086113 B CN110086113 B CN 110086113B
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- 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
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- Laying Of Electric Cables Or Lines Outside (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a cable segmented overhauling device for a humid environment, which comprises a connecting cabin and cable inlet and outlet pipeline sections, wherein a plurality of single-phase fault inspection holes are formed in the left side and the right side of the connecting cabin; the cable inlet and outlet pipeline section comprises a transverse pipeline and a vertical pipeline section, the vertical pipeline section is provided with a second flange, and the connecting pipeline below the connecting cabin is connected with the vertical pipeline section through a first flange and a second flange; a connecting plate for cable splicing is arranged on the second flange plate, and the connecting plate extends into the connecting cabin; the upper end of the vertical pipe section is provided with a partition plate, the partition plate is provided with an in-out cable through hole, a through hole bolt is arranged on the in-out cable through hole, and a steam trap is arranged on the upper portion of the through hole bolt. The invention has the characteristics of no condensation of high-voltage cable joints and low-voltage cable joints in a humid environment, safe fault maintenance of a single-phase loop and visual fault point search.
Description
Technical Field
The invention belongs to the technical field of electrical engineering, and particularly relates to a cable sectional maintenance device for a humid environment.
Background
At present, in domestic tunnel, underground comprehensive pipe gallery, shaft and other humid environments, the cable laying generally adopts the steel tube penetrating mode. Two forms are currently commonly used: firstly, a switch bottom box is arranged in a surface or concealed way; and secondly, assembling the electric box in an open manner or a dark manner. The switch bottom box is arranged in a surface or concealed way, so that the price is low, but the following defects exist: 1. the bottom box is not tightly sealed, and has poor waterproof and moisture-proof performance; 2. interphase short circuit faults are easy to generate, and single-phase fault processing capability is not provided; 3. when the fault is found to be not intuitive, the panel needs to be dismantled for inspection. Adopt obviously adorn or secretly assemble electronic box, possess the switch segmentation and overhaul ability, but have following shortcoming: 1. the price is high; 2. the occupied space is large, and the concrete structure is damaged; 3. condensation is easy to form, and the humidity in the box body is high; 4. the phenomenon of single-loop power failure is easy to occur.
Disclosure of Invention
In order to solve the technical problems, the invention provides the cable segmented overhauling device for the humid environment, so as to adapt to cable segmented overhauling operation in the humid environment in the building electromechanical engineering, and achieve the purposes of no condensation of high-voltage and low-voltage cable joints in the humid environment, single-phase loop safety fault overhauling and cable segmented overhauling operation with intuitive fault point searching.
In order to achieve the purpose, the technical solution of the invention is as follows:
a cable subsection overhaul device for a humid environment comprises a connecting cabin and cable inlet and outlet pipeline sections, wherein the connecting cabin is of a hollow cabin structure, a plurality of single-phase fault inspection holes are formed in the left side and the right side of the connecting cabin, detachable plug heads are arranged on the single-phase fault inspection holes and used for sealing, a light transmission inspection hole is formed in the front of the connecting cabin, a baffle made of transparent materials is arranged on the light transmission inspection hole, and a first flange plate is arranged on a connecting pipeline below the light transmission inspection hole; the cable inlet and outlet pipeline section is in an inverted T shape and comprises a transverse pipeline section and a vertical pipeline section, cable connecting flanges or connecting threads are arranged at the left end and the right end of the transverse pipeline section, a second flange is arranged at the upper end of the vertical pipeline section, and the connecting cabin is connected with the cable inlet and outlet pipeline section through the first flange and the second flange; a connecting plate for cable splicing is arranged on the second flange plate, and the connecting plate extends into the connecting cabin; the upper end of the vertical pipe section is provided with a partition plate so that the connecting cabin forms a closed space, the partition plate is provided with an in-out cable through hole, a through hole bolt is arranged on the in-out cable through hole, and a steam trap is arranged on the upper portion of the through hole bolt.
Preferably, the connecting plate is fixed on the second flange plate and comprises an insulating plate and a connecting copper plate, the connecting copper plate is fixed on the insulating plate through a fixing insulator, and cable connectors are arranged on the left side and the right side of the connecting copper plate.
Preferably, the number of the cable connectors is consistent with that of the single-phase fault inspection holes in the connection cabin, and the positions of the cable connectors correspond to the single-phase fault inspection holes.
Preferably, the number of the cable connectors and the single-phase fault inspection holes is 3 or 5.
Preferably, a flexible waterproof rubber pad is arranged at the joint of the first flange plate and the second flange plate.
Preferably, the baffle made of transparent material is glass or a convex lens.
Preferably, the steam trap is funnel-shaped, the outer ring is of a steel structure, and the interior of the steam trap is nested in the steel outer ring by adopting a flexible structure.
Preferably, an end cap is provided at the junction of the connection bay and the cable access duct section to increase the hermeticity of the device.
The invention has the beneficial effects that:
1. according to the invention, the light-transmitting inspection hole is formed in the connecting cabin, so that the fault position can be visually observed, the fault position is generally the joint position, then the plugging head on the one-way inspection hole is disassembled, the fault phase wire core is pulled out, the fault voltage and current conditions are measured through the universal meter, the one-way fault inspection is carried out, and the multi-loop power failure of the three-phase five-wire is avoided.
2. According to the characteristic that water flows to a low position, the funnel-shaped steam trap is arranged at the upper part of the inlet and outlet perforated bolt, if residual water drops exist in the pipeline, the residual water drops can be collected through the funnel-shaped water drops at a low point, and the water drops flow out of the cabin body along the funnel hole (namely the cable penetrating hole), so that condensation is avoided; the steam trap adopts outer lane steel mechanism, and inside adopts flexible construction nestification in the steel outer lane, can prevent the moisture countercurrent, guarantee that the cable is insulating.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
As shown in figure 1 and figure 2, a cable segmentation overhauls device for humid environment, including connecting cabin 1 and cable business turn over line pipeline section 2, the hollow cabin body structure that connects cabin 1 to, the left and right sides is equipped with a plurality of single-phase trouble inspection holes 11, be equipped with detachable shutoff head 12 on the single-phase trouble inspection hole 11 and be used for sealed, detachable shutoff head 12 and single-phase trouble inspection hole 11 connected mode include for threaded connection, the place ahead is equipped with printing opacity inspection hole 13, set up transparent material's baffle on the printing opacity inspection hole 13, set up a plurality of draw-in grooves 131 around the printing opacity inspection hole 13 for the chucking baffle, transparent material's baffle can be glass or convex lens, is equipped with first ring flange 14 on the connecting tube of below.
The cable inlet and outlet pipeline section 2 is in an inverted T shape and comprises a transverse pipeline section 21 and a vertical pipeline section 22, cable connecting flanges or connecting threads are arranged at the left end and the right end of the transverse pipeline section 21, a main pipeline is generally connected by flanges, the stress caused by longitudinal tension or temperature difference can be reduced by flange connection, the main pipeline is a non-metal pipeline and is connected by threads, a second flange 23 is arranged at the upper end of the vertical pipeline section 22, and the connection cabin 1 and the cable inlet and outlet pipeline section 2 are connected by the first flange 14 and the second flange 23; as shown in fig. 3, a flexible waterproof rubber pad 3 is arranged at the joint of the first flange 14 and the second flange 23, so that the moisture resistance is enhanced; a connecting plate 4 for cable splicing is arranged on the second flange plate 23, and the connecting plate 4 extends into the connecting cabin 1; the connecting plate 4 is fixed on the second flange plate 23 and comprises an insulating plate 41 and a connecting copper plate 42, the connecting copper plate 42 is fixed on the insulating plate through a fixing insulator 43, cable plug connectors 44 are arranged on the left side and the right side of the connecting copper plate 42, the cable plug connectors 44 are of a common cable plug connector structure, and the connecting plate 4 can be fixed on the second flange plate 23 in a welding mode; the number of the cable plug-in connectors 44 is consistent with that of the single-phase fault inspection holes 11 in the connection cabin 1, the positions of the cable plug-in connectors 44 correspond to those of the single-phase fault inspection holes 11, the number of the cable plug-in connectors 44 and the number of the single-phase fault inspection holes 11 are 3 or 5, and cable segmented overhaul devices with different specifications can be formulated according to the actual three-phase five-wire multi-loop cable condition.
Example 2
As shown in fig. 2, an end cover 5 is disposed at the joint of the connection cabin 1 and the cable inlet/outlet pipe section 2 to increase the sealing performance of the device, reduce the erosion of the waterproof rubber gasket 3 between the flanges by the external pressure, increase the service life of the waterproof rubber gasket 3, and also increase the service life of the whole device. The end cover 5 is a middle division structure with the left end cover and the right end cover meshed with each other.
In the above embodiment, the cable segment repair device includes the following steps:
1. selecting different specifications of segmented maintenance devices according to design loads;
2. connecting and splicing cables;
3. installing a segmented maintenance device;
4. single-side power supply fault post-processing step:
observation of a light transmission inspection hole (visually determining a fault point) → dismounting a plugging head of a single-phase fault inspection hole → pulling out a fault phase wire core → measuring fault voltage and current by using a multimeter → pulling out a segmented maintenance device plug of a section close to a fault → fault processing → recovering power transmission
The connection cabin 1 is made of plastic with a high dustproof effect, the diameter of the connection cabin 1 is 200mm or 150mm, the diameter of the front light-transmitting inspection hole 13 is 20% smaller than that of the connection cabin 1, the cable fault position in the connection cabin 1 can be observed conveniently, the diameter of the single-phase fault inspection hole 11 is 32mm, and when a cable plug connector 44 corresponding to the single-phase fault inspection hole is found to be in fault, the plug head 12 is detached, and fault treatment can be carried out.
The invention has the following beneficial effects:
1. the funnel-shaped steam trap is arranged according to the vertical drainage principle, so that condensation is avoided, and the insulation of the cable is reduced;
2. the single-phase fault detection can be realized, and the power failure of a three-phase five-wire multi-loop is avoided;
3. through the observation hole, a first sensory recognition is formed, and the whole fault is perceived.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A cable subsection overhaul device for a humid environment is characterized by comprising a connecting cabin and cable inlet and outlet pipeline sections, wherein the connecting cabin is of a hollow cabin structure, a plurality of single-phase fault inspection holes are formed in the left side and the right side of the connecting cabin, detachable blocking heads are arranged on the single-phase fault inspection holes and used for sealing, a light transmission inspection hole is formed in the front of the connecting cabin, a baffle made of transparent material is arranged on the light transmission inspection hole, and a first flange plate is arranged on a connecting pipeline below the light transmission inspection hole; the cable inlet and outlet pipeline section is in an inverted T shape and comprises a transverse pipeline section and a vertical pipeline section, cable connecting flanges or connecting threads are arranged at the left end and the right end of the transverse pipeline section, a second flange is arranged on the vertical pipeline section, and a connecting pipeline below the connecting cabin is connected with the vertical pipeline section through the first flange and the second flange; a connecting plate for cable splicing is arranged on the second flange plate, and the connecting plate extends into the connecting cabin; the upper end of the vertical pipe section is provided with a partition plate so that the connecting cabin forms a closed space, the partition plate is provided with an in-out cable through hole, a through hole bolt is arranged on the in-out cable through hole, and a steam trap is arranged on the upper portion of the through hole bolt.
2. The sectional cable overhauling device for the humid environment as claimed in claim 1, wherein the connecting plate is fixed on the second flange plate and comprises an insulating plate and a connecting copper plate, the connecting copper plate is fixed on the insulating plate through a fixing insulator, and cable inserting connectors are arranged on the left side and the right side of the connecting copper plate.
3. The cable segment inspection device for a humid environment according to claim 2, wherein the number of cable plugs corresponds to the number of single-phase fault inspection holes on the connection cabin, and the positions of the cable plugs correspond to the single-phase fault inspection holes.
4. The cable segment inspection device for a humid environment of claim 3, wherein the number of cable plugs and single phase fault inspection holes is 3 or 5.
5. The cable segment repair device for a wet environment of claim 1, wherein a flexible waterproof rubber gasket is provided at the joint of the first flange and the second flange.
6. The cable segment repair device for a wet environment of claim 1, wherein the baffle of transparent material is glass or a convex lens.
7. The cable segment overhaul device for the humid environment according to claim 1, wherein the steam trap is funnel-shaped, the outer ring is of a steel structure, and the inner part is nested in the steel outer ring by adopting a flexible structure.
8. A cable segment repair device for wet environments according to any one of claims 1 to 7, wherein end caps are provided at the junction of the connection capsule and the cable access duct section to increase the tightness of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439920.6A CN110086113B (en) | 2019-05-24 | 2019-05-24 | Cable subsection overhauling device for humid environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439920.6A CN110086113B (en) | 2019-05-24 | 2019-05-24 | Cable subsection overhauling device for humid environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110086113A CN110086113A (en) | 2019-08-02 |
| CN110086113B true CN110086113B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910439920.6A Active CN110086113B (en) | 2019-05-24 | 2019-05-24 | Cable subsection overhauling device for humid environment |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110994484B (en) * | 2020-01-04 | 2021-01-22 | 圣达电气有限公司 | Repairing device for wire and cable insulating layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009288035A (en) * | 2008-05-29 | 2009-12-10 | Japan Ae Power Systems Corp | Partial discharge detector |
| EP2360804B1 (en) * | 2009-12-02 | 2016-05-18 | Nexans | Assembly for linking two energy cables |
| CN104283176B (en) * | 2014-10-09 | 2017-03-01 | 宁波东方电缆股份有限公司 | Deep water electricity flies cable unit and connects distributor |
| CN107910830A (en) * | 2017-12-19 | 2018-04-13 | 青岛鲜食科技有限公司 | A kind of Waterproof connector of cable component that can solve the problems, such as food safety and sanitation |
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