CN108879572B - High-voltage cable middle joint protective shell with packing box - Google Patents
High-voltage cable middle joint protective shell with packing box Download PDFInfo
- Publication number
- CN108879572B CN108879572B CN201810927734.2A CN201810927734A CN108879572B CN 108879572 B CN108879572 B CN 108879572B CN 201810927734 A CN201810927734 A CN 201810927734A CN 108879572 B CN108879572 B CN 108879572B
- Authority
- CN
- China
- Prior art keywords
- cover plate
- base
- voltage cable
- transverse arc
- space
- 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.)
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Links
- 238000012856 packing Methods 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 title claims abstract description 9
- 210000001503 joint Anatomy 0.000 title abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000006004 Quartz sand Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 239000012634 fragment Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Cable Accessories (AREA)
Abstract
The embodiment of the invention discloses a protective shell with a stuffing box for a middle joint of a high-voltage cable, which comprises the following components: the base is closed at the lower side and is opened at the upper side, the left side and the right side of the base extend out of the first flange edges respectively, and the interior of the base is divided into two parts by a vertical plate; the cover plate is of a frame structure, second flange edges extend out of two sides of the cover plate respectively, two transverse arc plates are arranged between the left side and the right side of the cover plate respectively, the two transverse arc plates divide the cover plate into a lower space and a lower space, and the second flange edges are aligned with the first flange edges of the base and are fixed through bolts; an accommodating space is formed between the lower space of the cover plate and the base and is used for accommodating two high-voltage cable intermediate connectors which are arranged side by side; each transverse arc plate is provided with a pressure relief part; and a packing box is formed in the upper space of the cover plate and used for packing quartz sand. By implementing the embodiment of the invention, the middle joint of the high-voltage cable can be protected, and the safety of the middle joint of the high-voltage cable is improved.
Description
Technical Field
The invention relates to the field of high-voltage cable middle joint protection, in particular to a high-voltage cable middle joint protection shell with a packing box.
Background
The high-voltage cable is an important component of the power system, and is mainly used for transmitting energy, the running voltage of the high-voltage cable is not equal to 10kV-500kV, the high-voltage cable is limited by transportation conditions, the high-voltage cable can only be manufactured into a reel form with the length of about 800-1000 m, when the high-voltage cable is long in laying length, the cable needs to be connected by using a cable intermediate head, and the connection of the cable intermediate head is generally carried out on a cable laying site.
Because the manufacturing and the installation defect of high-voltage cable intermediate head, the probability that takes place short circuit breakdown is far higher than the cable body in the operation of high-voltage cable intermediate head, in addition, high-voltage cable intermediate head adopts polymer flexible material to make more, insulating and waterproof performance are good, but mechanical strength is lower, because electric power system's energy is huge, in case the high-voltage cable intermediate head breaks down, take place very easily and fire, explode, cause the threat to public security.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the high-voltage cable middle joint protective shell with the packing box, which provides additional protection for the high-voltage cable middle joint, and can quickly release and eliminate flame, fragments and the like generated after faults occur in the high-voltage cable middle joint, thereby preventing the flame, fragments and the like from damaging safety of adjacent equipment and personnel.
In order to solve the technical problems, an embodiment of the present invention provides a protection shell for an intermediate joint of a double-circuit high-voltage cable with a packing box, including:
the base is closed at the lower side and is opened at the upper side, the left side and the right side of the base extend out of the first flange edges respectively, and the interior of the base is divided into two parts by a vertical plate;
The cover plate is of a frame structure, second flange edges extend out of two sides of the cover plate respectively, two transverse arc plates are arranged between the left side and the right side of the cover plate respectively, the two transverse arc plates divide the cover plate into a lower space and a lower space, and the second flange edges are aligned with the first flange edges of the base and are fixed through bolts;
An accommodating space is formed between the lower space of the cover plate and the base and is used for accommodating two high-voltage cable intermediate connectors which are arranged side by side;
each transverse arc plate is provided with a pressure relief part;
and a packing box is formed in the upper space of the cover plate and used for packing quartz sand.
The two transverse arc plates are bent downwards, the junction between the lower parts of the two transverse arc plates is propped against the vertical plates, and when the cover plate is matched with the base, the formed accommodating space is two separated spaces for respectively accommodating a middle joint of the high-voltage cable.
The middle junction of the upper part of the transverse arc plate is provided with a separation plate, and the packing boxes are respectively divided into two independent packing spaces.
The pressure relief part is a slit or a through hole penetrating through the transverse arc plate.
And through holes for the cables at the end parts of the middle joint of the high-voltage cable to pass through are respectively formed at the two ends of the base and the cover plate.
Wherein, base, apron adopt stainless steel material to make.
The embodiment of the invention has the following beneficial effects:
the invention adopts a structure of combining the base and the cover plate, and can form independent accommodating spaces for respectively accommodating two-circuit cables; each accommodating space is provided with a pressure relief part, a packing box is formed on the pressure relief part, and quartz materials are filled in the packing box; when the cable middle joint fails and the pressure in the accommodating space is overlarge, the fault arc and gas can be guided and absorbed through the pressure relief part, so that the safety is improved;
simultaneously, accommodation space and packing box divide into two relatively independent parts respectively, can realize better fault protection ability, when one of them cable intermediate head breaks down, can not influence another one cable intermediate head.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure of a protective shell of a middle joint of a high-voltage cable with a stuffing box and a middle head of the cable, which are matched with each other;
FIG. 2 is a schematic view of the base of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 2 after the middle connector of the high voltage cable is placed;
FIG. 4 is a schematic view of the structure of the cover plate of FIG. 1;
fig. 5 is a schematic view of another angle of the cover plate of fig. 4.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.
FIG. 1 is a schematic view showing the structure of the middle joint protecting shell with packing box and the middle joint of the high-voltage cable; as shown in fig. 2 to 5. In an embodiment of the present invention, the high-voltage cable middle joint protection shell with a stuffing box includes:
The base 2, its underside is closed, the upper side is opened, extend out the first flange 20 separately from left and right sides, the inside is divided into two parts by a riser 21, there are a plurality of bolt holes 22 on each first flange 20;
The cover plate 1 is of a frame structure, two sides of the cover plate extend out of the second flange edges 10 respectively, and a plurality of bolt holes 15 are formed in each second flange edge 10; two transverse arc plates 11 are respectively arranged between the left side and the right side, the two transverse arc plates 11 divide the cover plate 1 into a lower space and a lower space, and the second flange 10 is aligned with the first flange 20 of the base and is fixed by bolts 5;
an accommodating space is formed between the lower space of the cover plate 1 and the base 2 and is used for accommodating two high-voltage cable intermediate connectors 3 which are arranged side by side; the base 2 and the cover plate 1 are made of stainless steel materials, and in one example, the cover plate 1 and the base 2 can be made by casting or milling, wherein the thickness of the shell can reach 15mm, and the anti-explosion structure has stronger anti-explosion strength;
Each of the lateral arc plates 11 is provided with a pressure relief portion 13, and in some embodiments, the pressure relief portion 13 is a slit or a through hole penetrating the lateral arc plate 11;
The upper space of the cover plate 1 forms a packing box for packing quartz sand.
More specifically, the two lateral arc plates 11 are both bent downward, and the junction between the lower parts thereof abuts against the vertical plate 21, so that when the cover plate 1 is matched with the base 2, the formed accommodating space is two separated spaces, and each accommodating one high-voltage cable intermediate connector 3.
Wherein, the middle junction of the upper part of the transverse arc plate 11 is provided with a separation plate 12, and the stuffing boxes are respectively divided into two independent stuffing spaces.
In addition, through holes through which the cables 4 at the ends of the high voltage cable intermediate joint 3 pass are formed at both ends of the base 2 and the cover 1, respectively, and in one example, the cables 4 may be 110kV cables, and the high voltage cable intermediate joint 3 may be a 110kV cable intermediate joint. After the cover plate 1 and the base 2 are installed and fixed, a closed space is formed among the cover plate 1, the base 2 and the cable 3, and the effect of preventing electric arcs and fragments from flying out is achieved.
It will be appreciated that when the cable middle head 3 fails, the fault arc and gas will be exhausted along the pressure relief portion, and the silica sand placed in the stuffing box will now act to absorb energy and cool the arc sufficiently so that it does not cause damage to other cables. The partition plate of the packing box is used for isolating the pressure relief channels of the two cable middle heads 3, so that when one cable middle head 3 fails, an electric arc can be prevented from directly entering through the pressure relief seam and damaging the other cable middle head 3.
The embodiment of the invention has the following beneficial effects:
the invention adopts a structure of combining the base and the cover plate, and can form independent accommodating spaces for respectively accommodating two-circuit cables; each accommodating space is provided with a pressure relief part, a packing box is formed on the pressure relief part, and quartz materials are filled in the packing box; when the cable middle joint fails and the pressure in the accommodating space is overlarge, the fault arc and gas can be guided and absorbed through the pressure relief part, so that the safety is improved;
simultaneously, accommodation space and packing box divide into two relatively independent parts respectively, can realize better fault protection ability, when one of them cable intermediate head breaks down, can not influence another one cable intermediate head.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely illustrative of the embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and that such variations and modifications are to be regarded as being within the scope of the application.
Claims (4)
1. The utility model provides a take high tension cable intermediate head protective housing of packing box which characterized in that includes:
the base is closed at the lower side and is opened at the upper side, the left side and the right side of the base extend out of the first flange edges respectively, and the interior of the base is divided into two parts by a vertical plate;
The cover plate is of a frame structure, second flange edges extend out of two sides of the cover plate respectively, two transverse arc plates are arranged between the left side and the right side of the cover plate respectively, the cover plate is divided into an upper space and a lower space by the two transverse arc plates, and the second flange edges are aligned with the first flange edges of the base and are fixed through bolts;
An accommodating space is formed between the lower space of the cover plate and the base and is used for accommodating two high-voltage cable intermediate connectors which are arranged side by side;
each transverse arc plate is provided with a pressure relief part;
the upper space of the cover plate forms a packing box for packing quartz sand;
A partition plate is arranged at the middle junction of the upper part of the transverse arc plate, and the packing boxes are respectively divided into two independent packing spaces;
The base and the cover plate are made of stainless steel materials.
2. The protective housing of claim 1, wherein said two transverse arc plates are each curved downward, and the intermediate junction of the lower portions thereof abuts against said riser such that when said cover plate is mated with said base, the receiving space formed is two separate spaces each receiving a high voltage cable intermediate connector.
3. The protective case of claim 2, wherein the pressure relief portion is a slit or a through hole penetrating the transverse arc plate.
4. The protective housing of claim 2, wherein the base and cover plates are each formed at both ends thereof with a through hole through which a cable of an intermediate joint end of the high voltage cable passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927734.2A CN108879572B (en) | 2018-08-15 | 2018-08-15 | High-voltage cable middle joint protective shell with packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927734.2A CN108879572B (en) | 2018-08-15 | 2018-08-15 | High-voltage cable middle joint protective shell with packing box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108879572A CN108879572A (en) | 2018-11-23 |
| CN108879572B true CN108879572B (en) | 2024-04-19 |
Family
ID=64317966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810927734.2A Active CN108879572B (en) | 2018-08-15 | 2018-08-15 | High-voltage cable middle joint protective shell with packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108879572B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721830A (en) * | 1987-06-25 | 1988-01-26 | Communications Technolgy Corporation | Cable enclosure |
| CN201985501U (en) * | 2011-02-28 | 2011-09-21 | 无锡市华星电力阻燃材料有限公司 | Fire-resistant anti-explosion seal box for cable joints |
| CN106329428A (en) * | 2016-11-17 | 2017-01-11 | 国网上海市电力公司 | Protective box of cable intermediate joint |
| CN106711918A (en) * | 2016-11-30 | 2017-05-24 | 广东安诺新材料科技有限公司 | Double protection cable intermediate joint safety box provided with inner container and fully filled with fireproofing mud |
| CN107293869A (en) * | 2017-07-12 | 2017-10-24 | 厦门市众慧悦和科技有限公司 | The insulation protecting device of snap joint in the middle of a kind of flexible cable |
| CN208874247U (en) * | 2018-08-15 | 2019-05-17 | 深圳供电局有限公司 | A kind of high-voltage cable middle joint protecting crust with stuffing box |
-
2018
- 2018-08-15 CN CN201810927734.2A patent/CN108879572B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721830A (en) * | 1987-06-25 | 1988-01-26 | Communications Technolgy Corporation | Cable enclosure |
| CN201985501U (en) * | 2011-02-28 | 2011-09-21 | 无锡市华星电力阻燃材料有限公司 | Fire-resistant anti-explosion seal box for cable joints |
| CN106329428A (en) * | 2016-11-17 | 2017-01-11 | 国网上海市电力公司 | Protective box of cable intermediate joint |
| CN106711918A (en) * | 2016-11-30 | 2017-05-24 | 广东安诺新材料科技有限公司 | Double protection cable intermediate joint safety box provided with inner container and fully filled with fireproofing mud |
| CN107293869A (en) * | 2017-07-12 | 2017-10-24 | 厦门市众慧悦和科技有限公司 | The insulation protecting device of snap joint in the middle of a kind of flexible cable |
| CN208874247U (en) * | 2018-08-15 | 2019-05-17 | 深圳供电局有限公司 | A kind of high-voltage cable middle joint protecting crust with stuffing box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108879572A (en) | 2018-11-23 |
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