CN220358791U

CN220358791U - Buried cable damage prevention device in subsidence area

Info

Publication number: CN220358791U
Application number: CN202321713983.4U
Authority: CN
Inventors: 罗刚; 忽永钢; 樊创; 肖佳欣; 郑永锋
Original assignee: Shaanxi Construction Engineering New Energy Co ltd
Current assignee: Shaanxi Construction Engineering New Energy Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2024-01-16
Anticipated expiration: 2033-07-03

Abstract

The application belongs to the technical field of photovoltaics, and particularly relates to a buried cable damage prevention device in a subsidence area and a cable placement box; the first cable protection pipe is arranged on the cable placement box, can move at the first opening along the cable laying direction and is provided with a first built-in section and a first externally paved section, the first built-in section is positioned inside the cable placement box, and the first externally paved section is used for being laid inside the cable trench; the second cable protection pipe is installed on the cable placement box, and the second cable protection pipe can be movable at the second opening along the cable laying direction, and the second cable protection pipe has second built-in section and second external laying section, and the second built-in section is located the cable placement box inside, and second external laying section is used for laying inside the cable pit. The device can counteract the increase of the routing length of the cable caused by settlement collapse, thereby ensuring the safety of the cable and connected equipment.

Description

Buried cable damage prevention device in subsidence area

Technical Field

The application belongs to the technical field of photovoltaics, and particularly relates to a subsidence area buried cable damage prevention device

Background

The photovoltaic power station has large occupied area, so the used land is low-value land such as deserts, gobi, barren mountains, mine subsidence areas and the like, the topography and geology conditions are complex, each area is connected to the booster station by an alternating current or direct current cable, particularly the photovoltaic area, and if an overhead line is adopted, shadow shielding is generated to reduce the power generation benefit or a large amount of land is reserved to avoid the land waste, so the buried cable mode is most common. After a period of time, particularly the cable trench is subjected to digging and filling disturbance, ground subsidence and water and soil loss phenomena occur more or less, tension damage is easily generated on the cable, cable insulation damage, core wires exposed and even broken occur, and the power plant related loop reports ground faults, short circuit tripping and even large cables are burnt out, particularly barren mountain filling areas and mine subsidence areas are serious. At present, snake-shaped paving is often adopted for burying and paving, although the capability of releasing the reserved length of the cable to a certain extent is provided, the telescopic length and the protection scope of the cable are limited, and particularly the cable is limited by the pull-resistant capability of a common cable, and a hard dry clay protective layer is hardened and hardened after certain rainy seasons, so that the cable has the following defects: after subsidence and collapse of the cable trench occur, the cable is easy to be directly extruded and damaged by the earth and stone blocks, in addition, the routing length of the cable is increased after subsidence and collapse, when the cable with the reserved length at a distance along the way is needed, the problem that the tensile strength of the cable is insufficient and is pulled out often occurs due to overlarge friction force between the cable and the earth covering of the cable trench along the way. After the cable loop reports the ground fault, trips the short circuit and even burns out a large cable, the power supply of the fault cable needs to be cut off, fault points are found along the path of the line, earth is covered, the fault is checked and analyzed, then repair and test are carried out, backfilling and tamping are carried out after the fault is eliminated, and the power supply can be restored. After the photovoltaic power station is built and put into operation, large machinery is difficult to enter, the cost of entering and exiting once is high, and if entering, the large machinery is easy to damage the cable assembly support and other construction equipment. If the cable cannot be quickly processed and recovered, the power failure time is long, and even the cable and related equipment are burnt and scrapped, so that a large amount of waste is formed.

Disclosure of Invention

The embodiment of the application provides a subsidence area buried cable damage prevention device, which counteracts the increase of the cable routing length caused by subsidence and ensures that the cable is not damaged or the equipment connected with the cable is damaged due to insufficient cable length, thereby ensuring the safety of the cable and the connected equipment.

The embodiment of the application provides a subsidence area buries cable and prevents damaging device, include:

the cable placing box is characterized in that a first opening and a second opening are respectively arranged on two sides of the cable placing box, and the first opening and the second opening are staggered along the cable laying direction;

the first cable protection tube is used for penetrating a cable, movably installed on the cable placement box through the first opening, and capable of moving along the cable placement direction at the first opening, and is provided with a first built-in section and a first outer paving section, wherein the first built-in section is positioned inside the cable placement box, and the first outer paving section is used for being paved inside a cable trench;

the second cable protection tube, the inside of first cable protection tube is used for wearing to establish the cable, the second cable protection tube passes second opening movable mounting is in on the cable placement box, the second cable protection tube can be along the cable laying direction second opening part activity, the second cable protection tube has second built-in section and second outer section of laying, the second built-in section is located inside the cable placement box, the second outer section of laying is used for laying inside the cable pit.

In one possible implementation, the first and second built-in sections are aligned side by side and of equal length inside the cable-placing box.

In one possible implementation, the first built-in section faces one side of the second built-in section, and the second built-in section faces one side of the first built-in section, and the slit is formed in the first built-in section, the slit on the first built-in section penetrates through the end of the first built-in section, the slit on the second built-in section penetrates through the end of the second built-in section, and the width of the slit is larger than the diameter of the cable.

In one possible implementation, the length of the slit formed in the first built-in section is equal to the length of the first built-in section, and the length of the slit formed in the second built-in section is equal to the length of the second built-in section.

In one possible implementation, the end of the first built-in section faces to one side of the second built-in section, and the end of the second built-in section faces to one side of the first built-in section are both provided with wedge structures.

In one possible implementation, a first sealing sleeve is arranged at the connection part of the first cable protection tube and the first opening.

In a possible implementation, a second sealing sleeve is arranged at the connection part of the second cable protection tube and the second opening.

In one possible implementation, the cable placement box includes a box body and a box cover, the box body being connected to the box cover.

In one possible implementation, one side of the box body is rotatably connected with the box cover, and the other side of the box body is detachably connected with the box cover.

The cable damage preventing device for the buried cable in the subsidence area has the advantages that in the use process, the cable placing box, the first cable protecting pipe and the second cable protecting pipe are paved in the cable trench, the cable is penetrated into the first cable protecting pipe, the second cable protecting pipe and the cable placing box, in the cable placing box, the cable between the first cable protecting pipe and the second cable protecting pipe is bent, a section of cable with reserved length is formed in the cable placing box, when the situation of subsidence and the like occurs in the cable trench, the cable can be well protected under the protection effect of the first cable protecting pipe and the second cable protecting pipe, in addition, after subsidence occurs, the first cable protecting pipe and the second cable protecting pipe are gradually pulled out from the cable placing box, and the cable cannot be contacted with surrounding covering soil due to the protection of the first cable protecting pipe and the second cable protecting pipe, so that the cable cannot be easily pulled out, meanwhile, the cable with reserved length in the cable placing box is also straightened into a section of cable, the cable with reserved length is effectively pulled out, the problem of cable is solved, and the cable is prevented from being connected with the cable in a font shape, and the problem of cable is prevented from being broken, and the cable is not connected with equipment is solved.

Drawings

Fig. 1 is a schematic structural view of an apparatus for preventing a buried cable from being damaged in a subsidence area according to an embodiment of the present application.

Reference numerals:

1. a cable placement box; 2. a first cable protection tube; 20. a first built-in section; 21. a first outer paving segment; 3. a second cable protection tube; 30. a second built-in section; 31. and a second outer laying section.

Detailed Description

In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1, the application provides a subsidence area buries cable anti-damage device, including cable placement box 1, first cable protection tube 2 and second cable protection tube 3, the both sides of cable placement box 1 set up first opening and second opening respectively, along the direction of arranging of cable, first opening staggers with the second opening, the inside of first cable protection tube 2 is used for wearing to establish the cable, first cable protection tube 2 passes first opening movable mounting on cable placement box 1, first cable protection tube 2 can be along the cable laying direction activity of first opening department, first cable protection tube 2 has first built-in section 20 and first outer section 21, first built-in section 20 is located cable placement box 1 inside, first outer section 21 is used for laying inside the cable pit, the inside of first cable protection tube 2 is used for wearing to establish the cable, second cable protection tube 3 passes second opening movable mounting on cable placement box 1, second cable protection tube 3 can be along the direction of second opening movable mounting, second cable protection tube 3 has second outer section 3 and lays in second cable pit 31 and is used for laying in second outer section 31, second outer section 30 is used for laying in the second outer section 1 inside the cable pit.

In the use, lay cable placement box 1, first cable protection pipe 2 and second cable protection pipe 3 to the cable pit in, wear to establish the cable in first cable protection pipe 2, second cable protection pipe 3 and the cable placement box 1, in cable placement box 1, the cable bending between first cable protection pipe 2 and the second cable protection pipe 3 arranges, thereby form the cable of one section reservation length in cable placement box 1, when the circumstances such as subsidence appear in the cable pit, under the guard action of first cable protection pipe 2 and second cable protection pipe 3, can play fine guard action to the cable, in addition subsidence takes place after, with first cable protection pipe 2 and second cable protection pipe 3 follow cable placement box 1 in-process of gradually pulling out, because the protection of first cable protection pipe 2 and second cable protection pipe 3, so the cable can not contact with the earthing around, thereby be difficult to lead to being broken, simultaneously, the bending cable of reservation length in the cable placement box 1 also can straighten into a straight line, effective cable routing length increases cable and the cable is not broken, thereby the cable safety problem of cable connection equipment is guaranteed to the cable connection problem or the cable is not guaranteed to appear.

The cable placing box 1 is of a rectangular box structure, a first opening is formed in the upper box wall of the cable placing box 1, a second opening is formed in the lower box wall, after one end of the first cable protection tube 2 is penetrated into the first opening, the first cable protection tube 2 positioned in the cable placing box 1 is a first built-in section 20, the first cable protection tube 2 positioned outside the cable placing box 1 is a first outer paving section 21, after one end of the second cable protection tube 3 is penetrated into the second opening, the second cable protection tube 3 positioned in the cable placing box 1 is a second built-in section 30, the second cable protection tube 3 positioned outside the cable placing box 1 is a second outer paving section 31, the caliber of the first opening is slightly larger than that of the first cable protection tube 2, so that the first cable protection tube 2 can move in the first opening, and the caliber of the second opening is slightly larger than that of the second cable protection tube 3, and the second cable protection tube 3 can move in the second opening.

Specifically, referring to fig. 1, the first opening is disposed on the left side of the upper side wall of the cable placement box 1, and the second opening is disposed on the right side of the lower side wall of the cable placement box 1, so that the first cable protection tube 2 and the second cable protection tube 3 form a dislocation structure in the cable placement box 1, and the space for bending arrangement between the first cable protection tube 2 and the second cable protection tube 3 is larger, so that the bending arrangement is more convenient. The cable which is arranged between the first cable protection tube 2 and the second cable protection tube 3 in a bending way can be of an S-shaped structure or a loop-shaped structure.

In some embodiments, the first built-in section 20 and the second built-in section 30 are aligned side by side and of equal length inside the cable placement box 1.

Specifically, the first cable protection tube 2 that wears to be established in from the first opening extends to the downside inner wall of cable and places box 1, and the second cable protection tube 3 that wears to be established in from the second opening extends to the upside inner wall of cable and places box 1, and first cable protection tube 2 and second cable protection tube 3 parallel arrangement each other, at the inside setting of Ji Dengchang of cable placement box 1, can make the distance between the end of first cable protection tube 2 in the cable placement box 1 and the end of second cable protection tube 3 the biggest like this, provide more open space of arranging for the crooked setting of follow-up cable.

In some embodiments, the side of the first built-in section 20 facing the second built-in section 30 and the side of the second built-in section 30 facing the first built-in section 20 are each slit, the slit on the first built-in section 20 penetrating the end of the first built-in section 20, the slit on the second built-in section 30 penetrating the end of the second built-in section 30, the width of the slit being larger than the diameter of the cable.

Specifically, the gaps on the first built-in section 20 and the second built-in section 30 are all opened along the axial extension of the cable protection tube, after subsidence collapse occurs, the cables in the first cable protection tube 2 and the second cable protection tube 3 can be pulled besides the first cable protection tube 2 and the second cable protection tube 3, so that the cables enter the gaps on the first cable protection tube 2 and the gaps in the second cable protection tube 3 and are finally straightened, and besides the cable routing length increase caused by subsidence collapse is counteracted by the movement of the first cable protection tube 2 and the second cable protection tube 3, the cable routing length increase caused by subsidence collapse is counteracted by pulling the cables, and the equipment connected by the cables is further enhanced due to insufficient length of the cables, so that the safety of the cables and the connected equipment is ensured.

In some embodiments, the length of the slit formed in the first built-in section 20 is equal to the length of the first built-in section 20, and the length of the slit formed in the second built-in section 30 is equal to the length of the second built-in section 30. This can increase the maximum straightened length of the cable between the first and second built-in sections 20, 30.

To facilitate the entry of cables into the slots on the respective built-in segments, in some embodiments, the side of the first built-in segment 20 that faces the second built-in segment 30, and the side of the second built-in segment 30 that faces the first built-in segment 20, are each provided with a wedge-shaped structure. Thus, the cable can conveniently enter the gap through the gradient of the wedge-shaped structure in the process of pulling the cable.

In some embodiments, the cable placement box 1 includes a box body and a box cover, with the box body being connected to the box cover.

Specifically, one side of the box body is rotationally connected with the opening of the box body, and the other side of the box body is detachably connected with the opening of the box body.

In order to reduce the ingress of sand in the cable trench into the cable gland 1, in some embodiments the junction of the first cable protection tube 2 with the first opening is provided with a first protective sheath and the junction of the second cable protection tube 3 with the second opening is provided with a second protective sheath.

Specifically, the first protective sleeve is the rubber sleeve, and first protective sleeve is tubular structure, and the both ends outer wall of first protective sleeve all is equipped with the retaining ring, and after first protective sleeve overlaps in first opening, the retaining ring at its both ends all blocks in first open-ended edge, and first cable protection pipe 2 wears to establish in first protective sleeve, in the in-process of pulling first cable protection pipe 2, because the effect of the retaining ring at first protective sleeve both ends, first protective sleeve can not move, and only first cable protection pipe 2 can move relative first protective sleeve. Similarly, the specific structures of the second cable protection tube 3 and the second protection sleeve are the same as above, and are not described in detail.

The application also provides a method for preventing the buried cable in the subsidence area from being damaged, which comprises the following steps:

digging a cable trench according to design requirements, and expanding the section width of the cable trench at a specified position;

placing the cable placing box 1 at the section expansion part of the cable trench;

a first cable protection tube 2 and a second cable protection tube 3 are paved in the cable trench, one end of the first cable protection tube 2 is penetrated into the cable placing box 1 from a first opening, and one end of the second cable protection tube 3 is penetrated into the cable placing box 1 from a second opening;

threading the cable into the first cable protecting tube 2 and the second cable protecting tube 3, and bending the cable between the first cable protecting tube 2 and the second cable protecting tube 3 in the cable placing box 1;

and backfilling and tamping the cable trench after the test is qualified.

The cable laid by the method can counteract the increase of the routing length of the cable caused by subsidence and collapse, and ensure that the cable and the connected equipment are not damaged by pulling or pulling due to insufficient cable length, thereby ensuring the safety of the cable and the connected equipment.

In some embodiments, the first built-in section 20 of the first cable protecting tube 2 is provided with a slit and a wedge structure before the first cable protecting tube 2 and the second cable protecting tube 3 are threaded, the second built-in section 30 of the second cable protecting tube 3 is provided with a slit and a wedge structure, and then the first built-in section 20 and the second built-in section 30 are threaded into the cable placing box 1 through the first opening and the second opening in the threading process.

After the first cable protection tube 2 and the second cable protection tube 3 are threaded in place, the first cable protection tube 2 and the second cable protection tube 3 are rotated such that the slit on the first built-in section 20 is disposed opposite the slit on the second built-in section 30, and the wedge-shaped structure of the end of the first built-in section 20 is disposed opposite the wedge-shaped structure of the end of the second built-in section 30.

After the cables are arranged on the first cable protection tube 2 and the second cable protection tube 3 in a penetrating manner, in the cable placement box 1, the cables between the first cable protection tube 2 and the second cable protection tube 3 are bent into an S-shaped arrangement or a loop-shaped structure arrangement, so that a certain cable length is reserved in the cable placement box 1.

In some embodiments, the overlapping length of the first cable protection tube 2 and the second cable protection tube 3 at the enlarged section of the cable pit is greater than the maximum collapse height. This ensures that the problem of the increase in the routing length of the cable due to the subsidence collapse can be compensated by pulling the first and second cable protection pipes 2 and 3 after the collapse.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Claims

1. The utility model provides a subsidence district buries cable anti-damage device which characterized in that includes:

2. The subsidence area buried cable damage prevention device of claim 1, wherein the first and second built-in sections are aligned side-by-side inside the cable placement box and are equal in length.

3. The subsidence collapse zone buried cable damage prevention apparatus of claim 2, wherein a side of the first built-in section facing the second built-in section and a side of the second built-in section facing the first built-in section are each provided with a slit, the slit on the first built-in section penetrates through an end of the first built-in section, the slit on the second built-in section penetrates through an end of the second built-in section, and a width of the slit is larger than a diameter of the cable.

4. A subsidence collapse zone buried cable damage prevention apparatus as recited in claim 3, wherein the length of the slit opened on the first built-in section is equal to the length of the first built-in section, and the length of the slit opened on the second built-in section is equal to the length of the second built-in section.

5. The subsidence collapse zone buried cable damage prevention apparatus of claim 4, wherein the ends of the first built-in section are each provided in a wedge structure toward one side of the second built-in section, and the ends of the second built-in section are each provided in a wedge structure toward one side of the first built-in section.

6. The subsidence area buried cable damage prevention device of claim 1, wherein a first sealing sleeve is provided at a junction of the first cable protection tube and the first opening.

7. The subsidence area buried cable damage prevention device of claim 6, wherein a second sealing sleeve is provided at a junction of the second cable protection tube and the second opening.

8. The subsidence area buried cable damage prevention device of claim 1, wherein the cable placement housing comprises a housing body and a cover, the housing body being coupled to the cover.

9. The subsidence area buried cable damage prevention device of claim 8, wherein one side of the case body is rotatably connected to the cover, and the other side of the case body is detachably connected to the cover.