CN215680266U - Three-phase integrated wall-through hollow insulating sleeve - Google Patents
Three-phase integrated wall-through hollow insulating sleeve Download PDFInfo
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- CN215680266U CN215680266U CN202121464200.4U CN202121464200U CN215680266U CN 215680266 U CN215680266 U CN 215680266U CN 202121464200 U CN202121464200 U CN 202121464200U CN 215680266 U CN215680266 U CN 215680266U
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- 239000012212 insulator Substances 0.000 claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 27
- 239000004020 conductor Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 6
- 230000005298 paramagnetic effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a three-phase integrated wall-through hollow insulating sleeve, which comprises an insulator, three composite insulating sleeves distributed at equal intervals, a metal shielding connecting wire, a fixed clamping groove and a wiring terminal. The insulator is a main body of a wall-through hollow sleeve, a fixing clamping groove of a mounting structure is fixed on the outer portion of the insulator, three composite insulating sleeves distributed at equal intervals are arranged in the insulator, the three composite insulating sleeves penetrate through the insulator, each composite insulating sleeve comprises an outer semi-conductive layer, an outer shielding layer, an insulating semi-conductive layer, a voltage-sharing shielding layer and a metal shielding layer from outside to inside, the composite insulating sleeves are connected through metal shielding connecting wires, and the metal shielding connecting wires are led out from one end of the insulator and connected with a grounding terminal. According to the utility model, the effect of conveniently fixing the insulator is achieved by arranging the insulating semi-conductive layer, the metal conductive tube and the fixing clamping groove, the fixation by using a traditional fixing plate is avoided, the equipment cost is reduced, and the equipment installation efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a three-phase integrated wall-penetrating hollow insulating sleeve.
Background
With more and more facilities of the transformer substation in China, more and more prefabricated cabin type transformer substations are provided. The user selects the prefabricated cabin type transformer substation based on the factors of short construction period, low cost and the like. However, many electrical devices still continue to use some original designs, have large volume, complex installation and high cost, and cannot be well applied to occasions with small space and compact devices such as prefabricated cabin type substations and the like, and the improvement of the devices is urgently needed. The existing wall bushing is an electrical product which needs to be improved.
The existing wall bushing is of a single-phase straight pipe type, so that the occupied space is large, an upper fixing plate and a lower fixing plate need to be additionally configured, the installation is complex, and unpredictable risks, installation damage and use risks are increased.
The utility model adopts a three-phase integrated design, can select a straight pipe type wall bushing or a bent pipe special-shaped bushing according to the field requirement, and has compact structure, small occupied space and high reliability. Because the design is hollow, the special wall bushing can be called by matching with a proper core-through conductor (a row type, a bar type or a tube type), and the conductor of the tube type bus or the conductor of other buses can also be directly penetrated through the proper part to form a part of the bus, thereby being very flexible
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a three-phase integrated wall-through hollow insulating sleeve, which has the advantage of convenience in installation of equipment and solves the problem that the equipment is inconvenient to install.
In order to achieve the purpose, the utility model provides the following technical scheme: a three-phase integrated wall-through hollow insulating sleeve comprises three through holes, a sleeve composite insulator covering the three through holes, a sleeve mounting and fixing structure and a grounding structure.
The three through holes are respectively used for penetrating through the three-phase power transmission conductor, and the hole-shaped structures of the three through holes are not limited to circular holes, elliptical holes, D-shaped holes and the like; the through holes can be three straight holes, and also can be three regularly arranged inclined holes and holes with bends; an inner equipotential layer is arranged on the inner wall of the through hole; the inner equipotential layer is a semiconductor material layer or a paramagnetic metal tube layer or a composite structure layer of the semiconductor material layer and the paramagnetic metal tube layer.
The three-phase transmission conductor passing through the through hole can be respectively in close contact with the inner equipotential layer in the through hole through an equipotential contact structure, so that the transmission conductor and the inner equipotential layer form an equipotential, and discharge caused by potential difference is avoided. The equipotential contact structure does not belong to a three-phase integrated sleeve, and can be an elastic reed fixed on a transmission conductor or a semi-conductive cushion block or other material conductors which play a supporting role in a through hole.
The sleeve composite insulator covering the three through holes is a whole, but is divided into a front section, a middle section and a rear section for convenience in description, the front section and the rear section respectively cover two ends of the three through holes, and the middle section covers the middle parts of the three through holes. The front section insulator or the rear section insulator protrudes out of the middle section insulator, and gaps meeting corresponding potential intervals can be formed between the insulator ends corresponding to the three through holes. The front section insulator or the rear section insulator is respectively provided with an end part electric stress evacuation control structure in addition to high-strength compact insulation at the end part of the insulator corresponding to the three through holes, and an umbrella skirt or a concave-convex structure for increasing creepage distance is arranged outside. The middle section insulator is internally provided with an external grounding shielding layer connected with the grounding structure, and the external grounding shielding layer can be a semiconductor material layer, a paramagnetic metal thin layer or a composite layer closely adhered by the semiconductor material layer and the paramagnetic metal thin layer.
The sleeve mounting and fixing structure can be a mounting groove or a mounting flange. The mounting groove is a through-wall fixing clamping groove, a fixing reinforcing structure made of metal materials can be embedded in the mounting groove, and a high-strength high polymer fixing structure can also be used. The mounting flange can be made of metal or high-strength high-molecular polymer, and can also be a composite reinforced structure combining the metal and the high-molecular polymer. The mounting groove or the mounting flange is a structure capable of preventing water from entering, can be sealed by arranging a sealing ring, and can also be directly sealed by sealant.
The grounding structure is a leading-out structure of the grounding shielding layer, is connected with a grounding net when the bushing is installed, one end of the grounding structure is embedded in the middle-section bushing composite insulator and is in short connection with the grounding shielding layer, and the other end of the grounding structure is led out of the bushing body; the grounding structure can be a special grounding terminal, and can also be integrated with a metal reinforcing structure of the mounting groove or the mounting flange; the grounding terminal can be a terminal row with a wiring hole or a bolt hole.
Preferably, an inner semiconductive layer is arranged inside the insulating semiconductive layer voltage-sharing shielding layer, a metal conductive pipe is arranged inside the inner semiconductive layer, and the metal conductive pipe is in a hollow design.
Preferably, insulating semi-conductive layer outer wall all is provided with equidistance parallel distribution's full skirt, the full skirt is located insulating semi-conductive layer outside respectively.
Preferably, the outer wall of the insulator is provided with a fixing clamping groove, and the fixing clamping groove is located in the middle of the insulator.
Preferably, the shielding connecting wire is arranged in the insulator and connected with the metal shielding layer, and the shielding connecting wire penetrates through the outer wall of one end of the insulator and is connected with the grounding terminal.
Compared with the prior art, the utility model has the beneficial effects that: the equipotential layer of the inner wall of the through hole is arranged and is equipotential with the transmission conductor which passes through the through hole, so that the transmission body and the sleeve are prevented from being ablated due to potential difference discharge; through the whole air-gap-free high-strength insulation and whole shielding grounding structure, the smooth current transmission of the power transmission conductor passing through the through hole is ensured, and the short circuit between power transmission bodies or the short circuit between the power transmission bodies and the air and wall outside the sleeve can not occur; the stress evacuation control mechanism is arranged in the front section insulator and the rear section insulator, so that serious discharge caused by electric field distortion at the end part is avoided; through the structure for increasing the creepage distance arranged outside the front section insulator and the rear section insulator, the phenomenon that under severe environment conditions, the part outside the hole of the power transmission body forms sliding flashover discharge outside the sleeve, and forms short circuit with a wall body or a wall penetrating fixing structure is avoided. Through setting up bushing installation fixed knot and construct, can conveniently once only install the three-phase sleeve pipe, and can set up the sealing washer and be convenient for seal, avoided using traditional fixed plate to fix, reduce equipment cost, improve equipment fixing efficiency
Drawings
FIG. 1 is a schematic cross-sectional view of an insulator structure of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
In the figure: 1. an insulator; 2. a metal shielding layer; 3. shielding the connecting wire; 4. an insulating semiconductive layer; 5. an umbrella skirt; 6. a voltage-sharing shielding layer; 7. an inner semiconductive layer; 8. a metal conductive tube; 9. a ground terminal; 10. an outer semiconductive layer; 11. and fixing the clamping groove.
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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to fig. 2, an embodiment of the present invention includes: a three-phase integrated wall-through hollow insulating sleeve comprises an insulator 1, a shielding connecting wire 3, an insulating semi-conductive layer 4, a voltage-sharing shielding layer 6 and an outer semi-conductive layer 10, wherein a fixing clamping groove 11 is formed in the outer wall of one side of the insulator 1, the fixing clamping groove 11 is positioned in the middle of the insulator 1, a worker can hoist the insulator 1 to the inside of a mounting hole formed in a wall body through an external hoisting device, and can place a sealing ring between the insulator 1 and the mounting hole by the worker, so that the tightness between the insulator 1 and the mounting hole is ensured, the three-phase sleeve can be conveniently mounted at one time through the arrangement of the fixing clamping groove 11, the worker can arrange the sealing ring for sealing, the fixation by using a traditional fixing plate is avoided, the equipment cost is reduced, the equipment mounting efficiency is improved, the metal shielding layer 2 distributed in parallel at equal intervals is arranged in the insulator 1, and the paramagnetic metal layer is arranged, the device can be an aluminum alloy pipe, a copper alloy pipe or other corrosion-resistant metal pipes, and also can be a metal foil winding layer made of the materials, stress evacuation control mechanisms are arranged in the front section of the insulator 1 and the rear section of the insulator 1, so that severe discharge caused by end electric field distortion is avoided, a shielding connecting wire 3 is arranged inside the insulator 1, the shielding connecting wire 3 is connected with the metal shielding layer 2, the shielding connecting wire 3 penetrates through the outer wall of one end of the insulator 1 and is connected with a grounding terminal 9, and the purpose of grounding the device is achieved through the shielding connecting wire 3, the metal shielding layer 2 and the grounding terminal 9.
An outer semi-conductive layer 10 is arranged on one side of the inner wall of a metal shielding layer 2, an insulating semi-conductive layer 4 is arranged on the inner wall of the outer semi-conductive layer 10, an insulator 1, the insulating semi-conductive layer 4 and a metal conductive pipe 8 are insulated in a high-strength mode without air gaps on the whole, so that the smooth current transmission of a perforated transmission conductor is guaranteed, short circuit between transmission conductors or short circuit between the transmission conductors and air outside the insulating semi-conductive layer 4 and a wall body is avoided, umbrella skirts 5 which are distributed equidistantly and in parallel are arranged on the outer walls on two sides of the insulating semi-conductive layer 4 respectively, the creepage distance is increased by arranging the umbrella skirts 5, the phenomenon that under severe environment conditions, the hole outer part of the transmission conductor slides and discharges outside the insulating semi-conductive layer 4 and forms short circuit with the wall body or a wall penetrating fixing structure is avoided, a voltage-sharing shielding layer 6 which is distributed equidistantly and in parallel is arranged inside the insulating semi-conductive layer 4, an inner semi-conductive layer 7 is arranged inside the voltage sharing shielding layer 6, a metal conductive tube 8 is arranged in the inner semi-conductive layer 7, the metal conductive tube 8 is in a hollow design, and an inner equipotential layer is arranged on the inner wall of the metal conductive tube 8; the paramagnetic metal pipe layer of the inner equipotential layer is structurally designed, and the three-phase transmission conductor passing through the through hole can be respectively in close contact with the inner equipotential layer in the through hole through an equipotential contact structure, so that the transmission conductor and the inner equipotential layer form an equipotential, and discharge caused by potential difference is avoided. The equipotential contact structure does not belong to a three-phase integrated sleeve, can be an elastic reed fixed on a transmission conductor, ensures that the transmission conductor which passes through the through hole smoothly transmits current through the whole non-air-gap high-strength insulation, and does not have short circuit between transmission bodies or short circuit between the transmission bodies and the air outside the insulating semi-conductive layer 4 or the wall body.
The working principle is as follows: the insulator 1 is hoisted to the inside of a mounting hole formed in the wall body by an operator through an external hoisting device, and the sealing ring is placed between the insulator 1 and the mounting hole by the operator, so that the tightness between the insulator 1 and the mounting hole is ensured, and the smooth transmission of current by a transmission conductor which is perforated through the hole is ensured through the integral air-gap-free high-strength insulation, and the short circuit between transmission conductors or the short circuit between the transmission conductors and the air outside the insulating semi-conductive layer 4 and the wall body is avoided; by arranging the stress evacuation control mechanisms in the front section of the insulator 1 and the rear section of the insulator 1, the serious discharge caused by the distortion of an electric field at the end part is avoided; through setting up full skirt 5 and having increased creepage distance, avoided under adverse circumstances condition, the hole of transmission of electricity body outside insulating semi-conductive layer 4 appearance formation gliding flashover, form the short circuit with the wall body or wear wall fixed knot structure. Through setting up fixed slot 11, can conveniently once only install three-phase sleeve pipe.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides an integrative wall hollow insulation support of three-phase, includes insulator (1), shielding connecting wire (3), insulating semi-conductive layer (4), voltage-sharing shielding layer (6) and outer semi-conductive layer (10), its characterized in that: the insulation structure is characterized in that a metal shielding layer (2) is arranged inside the insulator (1) and distributed in parallel at equal intervals, an outer semiconductive layer (10) is arranged on one side of the inner wall of the metal shielding layer (2), an insulating semiconductive layer (4) is arranged on the inner wall of the outer semiconductive layer (10), and a voltage-sharing shielding layer (6) is arranged inside the insulating semiconductive layer (4) and distributed in parallel at equal intervals.
2. The three-phase integrated wall-through hollow insulating sleeve according to claim 1, characterized in that: an inner semiconductive layer (7) is arranged inside one side, away from the voltage-sharing shielding layer (6), of the insulating semiconductive layer (4), a metal conductive pipe (8) is arranged inside the inner semiconductive layer (7), and the metal conductive pipe (8) is in a hollow design.
3. The three-phase integrated wall-through hollow insulating sleeve according to claim 1, characterized in that: insulating semi-conductive layer (4) outer wall all is provided with umbrella skirt (5) of equidistance parallel distribution, umbrella skirt (5) are located insulating semi-conductive layer (4) respectively.
4. The three-phase integrated wall-through hollow insulating sleeve according to claim 1, characterized in that: the outer wall of one side of the insulator (1) is provided with a fixed clamping groove (11), and the fixed clamping groove (11) is located in the middle of the insulator (1).
5. The three-phase integrated wall-through hollow insulating sleeve according to claim 1, characterized in that: the shielding and connecting wire is characterized in that a shielding and connecting wire (3) is arranged inside the insulator (1), the shielding and connecting wire (3) is connected with the metal shielding layer (2), and the shielding and connecting wire (3) penetrates through the outer wall of one end of the insulator (1) and is connected with a grounding terminal (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464200.4U CN215680266U (en) | 2021-06-30 | 2021-06-30 | Three-phase integrated wall-through hollow insulating sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464200.4U CN215680266U (en) | 2021-06-30 | 2021-06-30 | Three-phase integrated wall-through hollow insulating sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215680266U true CN215680266U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121464200.4U Active CN215680266U (en) | 2021-06-30 | 2021-06-30 | Three-phase integrated wall-through hollow insulating sleeve |
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| CN (1) | CN215680266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612810A (en) * | 2024-01-22 | 2024-02-27 | 搏世因（北京）高压电气有限公司 | Umbrella skirt climbing structure of capacitive sleeve and flange mounting method |
-
2021
- 2021-06-30 CN CN202121464200.4U patent/CN215680266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612810A (en) * | 2024-01-22 | 2024-02-27 | 搏世因（北京）高压电气有限公司 | Umbrella skirt climbing structure of capacitive sleeve and flange mounting method |
| CN117612810B (en) * | 2024-01-22 | 2024-04-09 | 搏世因（北京）高压电气有限公司 | Umbrella skirt climbing structure of capacitive sleeve and flange mounting method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A three-phase integrated wall penetrating hollow insulation sleeve Granted publication date: 20220128 Pledgee: Bank of China Limited Jinan Licheng sub branch Pledgor: JINAN FULITONG ELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2024980040893 |