CN211456619U - Mounting structure of full-insulation tubular bus - Google Patents
Mounting structure of full-insulation tubular bus Download PDFInfo
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- CN211456619U CN211456619U CN202020142810.1U CN202020142810U CN211456619U CN 211456619 U CN211456619 U CN 211456619U CN 202020142810 U CN202020142810 U CN 202020142810U CN 211456619 U CN211456619 U CN 211456619U
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- tubular bus
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Abstract
The utility model provides an installation structure of a full-insulated tubular bus, belonging to the field of power pipeline construction, comprising a horizontal support frame arranged between a main transformer and a switch cabinet; the vertical supporting frames are provided with a plurality of groups, and the plurality of groups of vertical supporting frames are distributed on the horizontal supporting frame in parallel along the extension direction of the pipe bus; the top of the vertical supporting frame is provided with three groups of tubular female fixing pieces, and the tubular female fixing pieces are distributed to correspond to three phase lines for fixing tubular female. Further comprising: female connecting piece of pipe for female the connection with two sections adjacent pipes, female connecting piece of pipe includes: the middle joint is internally sleeved at the splicing position of two adjacent sections of pipe nuts; the outer sleeve is sleeved on the two adjacent sections of pipe nuts. The utility model discloses an installation structure is simple, and the standardized construction of being convenient for is applicable to the installation of the full insulating tubular generating line of elasticity solid composite shielding between power plant, the electrical installation engineering main transformer low pressure side of transformer substation to the cubical switchboard.
Description
Technical Field
The utility model belongs to power line construction field, concretely relates to mounting structure of tubular generating line of full insulation.
Background
Along with the increase of main transformer capacity, rated current of a low-voltage incoming line side of a transformer is also increased continuously, so that additional loss, the increase of skin effect coefficient, the reduction of current carrying capacity and the non-uniformity of current distribution are caused, and therefore the conventional rectangular bus cannot meet the requirements of bus heating and short-circuit electric power technically and structurally.
Therefore, the rectangular bus has been gradually replaced by an elastic solid composite shielding fully-insulated tubular bus, and the fully-insulated tubular bus has the characteristics of large current-carrying capacity (currently, the highest current-carrying capacity can reach 12000A), good insulating property, high mechanical strength, good heat dissipation, low temperature rise, low loss, high heat resistance coefficient of an insulating material, high reliability and the like, and is increasingly and widely applied to low-voltage sides of main transformers of transformer substations and booster stations.
Because the tubular bus bar of full insulation is different with the aspect such as rectangle generating line in structure, material, consequently, need be directed against the tubular generating line of full insulation and design corresponding mounting structure.
SUMMERY OF THE UTILITY MODEL
Based on the above background problem, the utility model aims at providing a mounting structure of tubular generating line of full insulation.
In order to achieve the above object, the embodiment of the present invention provides:
the mounting structure of the all-insulated tubular bus comprises a horizontal supporting frame, a horizontal supporting frame and a horizontal supporting frame, wherein the horizontal supporting frame is arranged between a main transformer and a switch cabinet; the vertical supporting frames are provided with a plurality of groups, and the plurality of groups of vertical supporting frames are distributed on the horizontal supporting frame in parallel along the extension direction of the pipe bus; the top of the vertical supporting frame is provided with three groups of tubular female fixing pieces, and the tubular female fixing pieces are distributed to correspond to three phase lines for fixing tubular female.
In one embodiment, the vertical supporting frame is a rectangular frame, and two sides of the top of the rectangular frame respectively extend outwards horizontally to form an extending part.
In one embodiment, the distance between the central lines of the adjacent pipe nut fixing pieces is 550 mm.
In one embodiment, the tubular female fastener includes: the circular plate is fixed at the top of the vertical supporting frame; and the supporting hardware fitting is arranged on the circular plate, and a cavity for the pipe bus to pass through is formed in the supporting hardware fitting.
In one embodiment, the mounting structure of the fully insulated tubular bus bar further includes: and the pipe nut connecting piece is used for connecting two adjacent sections of pipe nuts.
In one embodiment, the female coupling comprises: the middle joint is internally sleeved at the splicing position of two adjacent sections of pipe nuts; the outer sleeve is sleeved on the two adjacent sections of pipe nuts.
Preferably, an expansion joint for inserting the intermediate joint is axially formed at the end of the pipe nut.
More preferably, the length of the expansion joint is 8-12 cm.
In one embodiment, the mounting structure of the all-insulated tubular bus bar further includes a supporting member for fixing the horizontal supporting frame, the supporting member including: the supporting frame is arranged below the horizontal supporting frame and is positioned on one side of the cabin body outgoing line cabinet; the stand sets up in keeping away from cabin body outgoing line cabinet one side, just the stand passes through square slab and the horizontal support frame that the top set up.
Preferably, the mounting structure of the all-insulated tubular bus bar further includes: and the grounding installation pipe is vertically fixed on the ground, is fixedly connected with the upright column and is used for allowing a grounding wire to pass through so as to be grounded.
Compared with the prior art, the utility model discloses following effect has:
1. the utility model discloses an installation structure is simple, and the standardized construction of being convenient for is applicable to the installation of the full insulating tubular generating line of elasticity solid composite shielding between power plant, the electrical installation engineering main transformer low pressure side of transformer substation to the cubical switchboard.
2. The utility model discloses a female connecting piece of pipe will be adjacent two sections female connections of pipe, and the female metal contact surface of pipe can fully combine, and the water conservancy diversion area increase can avoid contacting badly, contact resistance grow, generating heat and oxidation phenomenon under long-term input and use and external environment influence, improves the construction process quality, prolongs the female running life of pipe.
3. The utility model discloses an adopt support frame and stand to support horizontal support frame, vertical bearing capacity reinforcing can prevent effectively that long distance section pipe is female flagging or deformation.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
Fig. 1 is a schematic view of an installation structure of a fully insulated tubular bus bar in an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural view of a vertical supporting frame and a pipe nut fixing member in an embodiment of the present invention;
fig. 4 is a schematic structural view of a female pipe connector in an embodiment of the present invention;
fig. 5 is a schematic view of an end structure of a pipe nut in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The embodiment of the utility model provides a mounting structure of tubular generating line of full insulation, be applicable to the power plant, the installation of the compound shielding tubular generating line of full insulation (hereinafter be referred to as female) 300 of elasticity solid between transformer 100 low-voltage side of transformer substation's electrical installation engineering main transformer to the cubical switchboard 200, it needs to explain, the female 300 of pipe need adopt the insulating shrouding of epoxy to seal with the junction of cubical switchboard 200, gap department adopts resin type bonding sealant sealed, avoid receiving the influence of environment such as external sleet, waterproof and protect effectually, it is corrosion-resistant, can effectively guarantee that the terminal joint department of the female 300 of pipe seals up and good insulation, guarantee the female 300 safe and reliable operation of pipe.
As shown in fig. 1 and 2, the mounting structure of the present embodiment includes a horizontal support frame 1, a vertical support frame 2, a pipe nut fixing member, and a support member.
In this embodiment, the support member includes: as shown in fig. 1, the support 301 is disposed near the switch cabinet 200 and is used for supporting the bus bar 300 on the outgoing line side of the switch cabinet 200, and specifically, the support 301 is a rectangular frame structure and made of square steel.
The upright post 302 is arranged at one side far away from the switch cabinet 200, and is particularly arranged near the right end of the horizontal support frame 1, and the upright post 302 and the support frame 301 are used together for supporting the horizontal support frame 1. Specifically, the top of the upright column 302 is welded with a square plate, four reinforcing ribs are welded around the square plate, and the bottom of the upright column 302 is welded with two grounding bolt holes 303 which are connected as grounding flat irons 304. More specifically, the upright column 302 of the present embodiment is made of galvanized steel pipe, and the material of the square plate is also made of steel, but is not limited thereto.
It should be noted that the heights of the supporting frame 301 and the upright column 302 can be determined by a principle of three points and one line, that is, after the switchgear 200 and the main transformer 100 are formally in place, the three points are: the machining heights of the support frame 301 and the upright column 302 are determined by measuring the elevations relative to a datum point by using a level gauge on the center line of the pipe bus on the side of the switch cabinet 200, the position of the grounding cable joint and a positioning point of a low-pressure side casing pipe clamp of the main transformer 100.
In the present embodiment, as shown in fig. 1 and 2, the horizontal supporting frame 1 is a rectangular frame made of square steel pipe, the length of the horizontal supporting frame 1 in the present embodiment is 6m, and the left end of the horizontal supporting frame 1 is arranged to extend to the switch cabinet 200.
In the present embodiment, as shown in fig. 1 and 2, the vertical support frames 2 are provided in four sets, but are not limited to four sets. Along the extension direction of the pipe bus 300, four groups of vertical supporting frames 2 are distributed on the horizontal supporting frame 1 in parallel; the concrete structure of the vertical supporting frame 2 is as shown in fig. 3, the vertical supporting frame 2 is a rectangular frame, and in order to install the pipe nut fixing piece, the left side and the right side of the top of the vertical supporting frame 2 extend outwards respectively to form extending portions 201.
The structure of the vertical supporting frame 2 is not limited to this, and in another embodiment, the vertical supporting frame 2 may not be provided with an extending portion, as long as the horizontal length of the vertical supporting frame 2 meets the installation size requirement of the three groups of pipe female fixing pieces described later.
In this embodiment, the tubular bus fixing member is provided with three groups, the three groups of tubular bus fixing members are distributed on the top of the vertical support frame 2 to respectively fix the three phase lines of the tubular bus 300, in this embodiment, the distance between the center lines of the three phase lines of the tubular bus 300 is 550mm, so the distance between the three groups of tubular bus fixing members is 550mm, it should be noted that the distance is not limited thereto, and the distance needs to be set according to the relevant electrical specification, the minimum electrical insulation distance between the three phase lines must be ensured, the distance is related to the voltage grade of the tubular bus, and the higher the voltage grade is, the larger the distance is.
Specifically, as shown in fig. 3, the female pipe fixing member includes: the support hardware fitting comprises a support hardware fitting 4 and a circular plate 401, wherein the circular plate 401 is welded to the top of the vertical support frame 2 and used for installing the support hardware fitting 4, a positioning hole is formed in the circular plate 401 and used for allowing a bolt to pass through, and the support hardware fitting 4 is installed on the circular plate 401 through the bolt. The material of the circular plate 401 in this embodiment is steel, and the bolt is a high-strength bolt of 8.8 grade, but is not limited thereto.
The support fitting 4 is provided with a circular cavity 402 for the pipe nut 300 to pass through so as to support the pipe nut 300. The support hardware fitting 4 in this embodiment is an integrated structure, and in other embodiments, the support hardware fitting 4 may also adopt a split structure, so as to facilitate the penetration of the pipe nut 300.
In this embodiment, the tube nuts respectively led out from the main transformer 100 and the switch cabinet 200 need to be connected through a tube nut connecting piece, as shown in fig. 4, the tube nut connecting piece includes: the pipe joint comprises an intermediate joint 5 and an outer sleeve 501, wherein the intermediate joint 5 is sleeved at the splicing position of two adjacent sections of pipe nuts 300, and the outer sleeve 501 is sleeved at the splicing position of two adjacent sections of pipe nuts 300.
In order to facilitate the insertion of the middle joint 5, an end of the pipe nut 300 is axially provided with three expansion joints 502, as shown in fig. 5, the three expansion joints 502 are uniformly distributed in an annular shape, in this embodiment, the length of the expansion joint 302 is set to be 10cm, but the invention is not limited thereto.
After the middle joint 5 is inserted, the outer sleeves 501 are sleeved on the outer sides of the pipe nuts 300, two outer sleeves 501 are arranged and correspond to two adjacent sections of the pipe nuts 300 respectively, then the outer sleeves 501 are clamped by using crimping pipe tongs, and after the crimping pipe tongs are fastened by using an electric wrench, the splicing parts of the two outer sleeves 501 are welded firmly.
It should be noted that the intermediate joint 5 and the outer sleeve 501 in this embodiment are both stainless steel pipes, and the specification selection of the intermediate structure 5 and the outer sleeve 501 needs to meet the requirements of the main transformer capacity, rated current, and short circuit, in this embodiment, the size of the pipe nut is Φ 60 × 5mm, the size of the intermediate joint 5 is Φ 50 × 10mm, and the size of the outer sleeve 501 is Φ 70 × 3 mm; in another embodiment, the size of the nut is 80 × 8mm, the size of the intermediate joint 5 is 64 × 10mm, and the size of the outer sleeve 501 is 90 × 3mm, but the invention is not limited thereto.
Because the tubular bus of all insulation adopts the hollow copper pipe as the conductor, the copper pipe outward appearance sets up multilayer insulating layer, aluminium foil layer metal shielding layer and polytetrafluoroethylene film, and the shell adopts the plastic insulation protective layer to form, after the female 300 of pipe hoists to the female mounting of pipe support gold utensil 4 department, again wrap up multilayer insulating layer, twine aluminium foil layer metal shielding layer, twine the polytetrafluoroethylene film layer in proper order in the copper pipe outward appearance again, at last evenly heat-shrink tube parcel. The insulating layer is wound by the winding method after the two adjacent sections of the pipe nuts 300 are connected through the pipe nut connecting piece.
In this embodiment, as shown in fig. 1, the mounting structure of the fully insulated tubular bus bar further includes: the grounding installation pipe 6 is vertically fixed on the ground, is fixedly connected with the upright column 302, and is used for allowing a grounding wire to pass through to be grounded, and the grounding wire is connected with the insulating shielding layer of the pipe nut 300. The tubular bus 300 generally all sets up the insulation shield layer, and the insulation shield layer sets up on the outermost one deck of insulating layer outside the copper pipe conductor, and the insulation shield layer draws forth ground connection through the copper braid over braid, makes the female electric potential of pipe be zero, and the increase of the surface electric field intensity that the insulation shield layer can eliminate because conductor surface and interior sheath surface are not smooth to cause, and the female 300 of pipe installs the earth connection additional, mainly in order to puncture the trouble or when passing through great fault current at the female 300 insulation of pipe, protects the female 300 of pipe.
It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. Mounting structure of tubular generating line of full insulation, its characterized in that includes:
the horizontal supporting frame is arranged between the main transformer and the switch cabinet;
the vertical supporting frames are provided with a plurality of groups, and the plurality of groups of vertical supporting frames are distributed on the horizontal supporting frame in parallel along the extension direction of the pipe bus;
the top of the vertical supporting frame is provided with three groups of tubular female fixing pieces, and the tubular female fixing pieces are distributed to correspond to three phase lines for fixing tubular female.
2. The mounting structure of a fully insulated tubular bus bar according to claim 1, wherein the vertical support frame is a rectangular frame, and both sides of the top of the rectangular frame are extended horizontally outward to form an extension portion.
3. The tubular bus bar mounting structure as claimed in claim 1, wherein the distance between the center lines of adjacent tubular bus bar fixing members is 550 mm.
4. The mounting structure of a fully insulated tubular bus bar according to claim 1, wherein the bus bar fixing member comprises:
the circular plate is fixed at the top of the vertical supporting frame;
and the supporting hardware fitting is arranged on the circular plate, and a cavity for the pipe bus to pass through is formed in the supporting hardware fitting.
5. The mounting structure of a fully insulated tubular bus bar according to claim 1, further comprising:
and the pipe nut connecting piece is used for connecting two adjacent sections of pipe nuts.
6. The mounting structure of a fully insulated tubular bus bar according to claim 5, wherein the tubular bus bar connection member comprises:
the middle joint is internally sleeved at the splicing position of two adjacent sections of pipe nuts;
the outer sleeves are provided with two outer sleeves, correspond to the adjacent connecting section pipe nuts respectively, and are sleeved on the pipe nuts.
7. The mounting structure of the tubular bus bar of claim 6, wherein an expansion joint for inserting the intermediate joint is axially provided at an end of the tubular bus bar.
8. The mounting structure of the all-insulated tubular bus bar according to claim 7, wherein the length of the expansion joint is 8-12 cm.
9. The mounting structure of a fully insulated tubular bus bar according to claim 1, further comprising a support member for fixing the horizontal support frame, the support member comprising:
the support frame is arranged below the horizontal support frame and is positioned on one side of the switch cabinet;
the stand sets up in keeping away from cubical switchboard one side, just the stand is fixed with horizontal support frame through the square slab that the top set up.
10. The mounting structure of a fully insulated tubular bus bar according to claim 9, further comprising:
and the grounding installation pipe is vertically fixed on the ground, is fixedly connected with the upright column and is used for allowing a grounding wire to pass through so as to be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142810.1U CN211456619U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of full-insulation tubular bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142810.1U CN211456619U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of full-insulation tubular bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211456619U true CN211456619U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020142810.1U Active CN211456619U (en) | 2020-01-22 | 2020-01-22 | Mounting structure of full-insulation tubular bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211456619U (en) |
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- 2020-01-22 CN CN202020142810.1U patent/CN211456619U/en active Active
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