CN202441099U - 500kV dual-loop compact straight-line tower in vertical and symmetrical arrangement - Google Patents
500kV dual-loop compact straight-line tower in vertical and symmetrical arrangement Download PDFInfo
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- CN202441099U CN202441099U CN2012200301772U CN201220030177U CN202441099U CN 202441099 U CN202441099 U CN 202441099U CN 2012200301772 U CN2012200301772 U CN 2012200301772U CN 201220030177 U CN201220030177 U CN 201220030177U CN 202441099 U CN202441099 U CN 202441099U
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Abstract
The utility model discloses a dual-loop compact straight-line tower, which mainly comprises a ground wire support, phase conductor wires, tower windows, a V-shaped insulator string, a tower body and tower legs, wherein each tower window is formed by folding a tower body middle column, a side column, a lower cross arm and an upper cross arm and is internally provided with upper, middle and lower three phases of conductor wires, and the phase conductor wires are all connected with the tower window of the V-shaped insulator string; the upper surface of the tower body is provided with a tower head consisting of two laterally symmetric tower windows, and the tower type of the entire tower head is axially symmetric; and the ground wire support is located at the top of the tower head and forms a negative protective angle with the lower phase conductor wire. According to the utility model, by optimized arrangement of the structure of the tower head and tower body and improvement of the type of the conductor wires and the insulator string, the tower head is compact in arrangement and novel and innovative in structure, so that the line corridor width and pole tower height are reduced maximally, and the transmission power of unit corridor is increased, the electromagnetic environment of the line is improved; and the dual-loop compact straight-line tower is an innovative dual-loop pole tower meeting the requirements on both width limit and height limit, and creates a new path for building a 500V line in developed areas with extremely crowded channels and height limit requirements.
Description
Technical field
The utility model relates to a kind of double loop compact tangent tower, especially a kind ofly not only satisfied limit for height but also satisfied the 500kV vertical arrangement symmetric arrangement double loop compact tangent tower that limit for width requires, belong to the overhead transmission line iron tower.
Background technology
500kV is two to return Qiaosi-money river 500kV work transmission line, because circuit gos deep into economically developed down town, Hangzhou, resident house and other buildings are than comparatively dense, and land resourcess such as farmland are nervous, and the transmission line of electricity width of corridor is taken up an area of has strict planning requirement; The simultaneously airport of adjacent lines and the height that military direction finding station has limited circuit, require this engineering circuit within the specific limits maximum height be no more than 50m.
Present domestic compact line has only single loop (inverted triangle), double loop level (inverted triangle) to arrange two kinds of forms.Inverted triangle horizontal arrangement double loop compact line, there is significant limitations than conventional double circuit line also wide (being about 20m) in width of corridor (being about 26m) in congested area, circuit corridor, can't promote in the nervous area of land resources.
500kV double loop shrunk type tower adopts V string vertical hanging; Iron tower is arranged to hyperbolic type or drum type; Wire spacing is little, is applicable to narrow area, corridor, but this tower tower head height is big; Satisfy lead over the ground safe distance under the situation, can't satisfy the requirement of general airport, military direction finding station 50m limit for height.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that prior art exists; There is the limit for height requirement simultaneously to some regional circuit corridors are narrow; Provide a kind of same return wire vertically to be arranged in the same tower window, adopt the suspension of V string, alternate no earthing component double loop compact tangent tower.
The purpose of the utility model is accomplished through following technical scheme; It mainly comprises: ground line bracket, phase conductor, tower window, V-type insulator string, body of the tower, tower leg; Wherein said tower window is surrounded by body of the tower center pillar, side column, following cross-arm and last cross-arm and forms; Arrange a upper, middle and lower loop, that be vertical arrangement three-phase conducting wire in the tower window, phase conductor all is connected with the tower window through the V-type insulator string.
Be provided with above the described body of the tower by symmetrical two tower heads that the tower window is formed, and the tower of whole tower head axisymmetricly; Said ground line bracket is positioned at the tower head top, is negative shielding angle with the phase conductor of below.
Described phase conductor adopts 6 divisions, and heading spacing is 375mm, and phase conductor central horizontal distance in loop, the left and right sides is 11.7 meters, the tower head height, and promptly the distance of lower wire hanging point line bracket to ground is 16.6 meters, whole tower height degree is limited in 50 meters.
Described body of the tower both sides horizontal symmetrical is furnished with two loop tower windows, and two times common six phase lead all adopts V-type insulator string and following cross-arm and last cross-arm to connect respectively, and the phase conductor vertical interval is 7.1 meters.
The described 500kV vertical arrangement of the utility model symmetric arrangement double loop compact type tower; Its objective is and compress horizontal range and tower head height between different circuit as far as possible; New tower makes full use of the suspension of V string, vertical arrangement reduces wire spacing; Reduce the tower head height through cancellation interlayer cross-arm, under the condition of limit for width limit for height, satisfy the air gap and livewire work requirement simultaneously.
The utility model is arranged compact; The novel structure innovation; Compress circuit width of corridor and shaft tower height to greatest extent, improved the transmission power of unit corridor, improved the line electricity magnetic environment; Be a kind of innovative double that limit for width satisfies the limit for height requirement again that promptly satisfies, create a new road for building the 500kV circuit in the developed area of the crowded especially limited high request again of passage.
Description of drawings
Fig. 1 is the structural representation of the said vertical arrangement symmetric arrangement of the utility model double loop compact tangent tower.
The specific embodiment
To combine accompanying drawing that the utility model is done detailed introduction below: shown in Figure 1; The described 500kV vertical arrangement of the utility model symmetric arrangement double loop compact tangent tower, it comprises: ground line bracket 1, phase conductor 2, tower window 3, V-type insulator string 4, body of the tower 5, tower leg 6.The central horizontal distance of loop, left and right sides phase conductor 2 is 11.7 meters, and tower head height (distance of lower wire hanging point 11 line bracket 1 to ground) is 16.6 meters, and whole tower height degree is limited in 50 meters.
Tower head is made up of symmetrical two tower windows 3, and whole tower axisymmetricly; Ground line bracket 1 is positioned at the tower head top, is negative shielding angle with the phase conductor of below, further improves anti-thunder performance.
Phase conductor adopts 6 divisions, and heading spacing is 375mm, and through calculating when lead is 14 meters to ground level, maximum power-frequency electric field strength is all less than 4kV/m under the line; When lead was 19 meters to ground level, maximum power-frequency electric field strength was merely 2.76kV/m under the line, and reference point place audible noise level is 44.72 dB (A), and the reference point radio interference level is 41.67dB, all satisfies the requirement of rules limit value.
Embodiment:
1), the tower head basic demand of arranging,
The basic problem that tower head is arranged be guarantee between lead wire and earth wire, between lead and they and shaft tower member and operating maintenance personnel between necessary gap.For guaranteeing that circuit normally moves, the controlled condition that needs to consider can be divided into thunderbolt or the needed lead wire and earth wire positioned opposite of counterattack lead in electric clearance, the wire spacing in the span and the defence span on the tower head.
2), phase conductor is arranged
Phase conductor adopts vertical arrangement to arrange, at 5mm ice and do not have the ice formation and can not consider the horizontal-shift between the lead, the above ice formation of 5mm deices the jump flashover in order to prevent the levels lead, needs the horizontal-shift between the consideration lead.Vertical distance between phase conductor through switching overvoltage discharge, livewire work experimental study, confirms in the lead that interlamellar spacing in the heart is 7.1m, and distance is not less than 5.4m between the isopic zone electricity body.
3), the different circuit wire spacing,
The different circuit lead need keep certain distance, satisfies in tower head and the span lead and prevents switching overvoltage discharge requirement.Confirm the tower head wire spacing according to insulator string is long with angle, check discharge scenario under the asynchronous swing situation of lead in the span under this distance.The utility model tower lead distance between centers is 11.7m, is applied in below the span 500m interbody spacer rod of can uneasiness pretending.
As a kind of improvement, the utility model is arranged in same loop three-phase conducting wire in the same tower window, and the three-phase conducting wire vertical arrangement does not have earthing component between phase conductor.
As a kind of improvement, the utility model is arranged in the body of the tower both sides with two loop tower window horizontal symmetrical, and structural design optimization is reasonable, promptly satisfies limit for height and requires to satisfy again the limit for width requirement.
As a kind of improvement, the utility model is total to the six phase lead for two times and all adopts V-type insulator string and iron tower lead cross-arm to connect, and further compressed lines route road width of corridor, ground wire adopt bears shielding angle design, further improves the line thunder protection performance.
At last, need to prove that what more than enumerate only is the specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought the protection domain of the utility model.
Claims (4)
1. double loop compact tangent tower; It mainly comprises: ground line bracket (1), phase conductor (2), tower window (3), V-type insulator string (4), body of the tower (5), tower leg (6); It is characterized in that wherein said tower window (3) is by body of the tower center pillar (10), side column (9), cross-arm (8) and last cross-arm (7) surround and form down; Arrange a upper, middle and lower loop, that be vertical arrangement three-phase conducting wires (2) in the tower window (3), phase conductor (2) all is connected with tower window (3) through V-type insulator string (4).
2. double loop according to claim 1 compact tangent tower it is characterized in that being provided with the tower head of being made up of symmetrical two tower windows (3) above the described body of the tower (5), and the tower of whole tower head axisymmetricly; Said ground line bracket (1) is positioned at the tower head top, is negative shielding angle with the phase conductor (2) of below.
3. double loop according to claim 1 and 2 compact tangent tower; It is characterized in that described phase conductor (2) adopts 6 divisions; Heading spacing is 375mm, and loop, left and right sides phase conductor (2) central horizontal distance is 11.7 meters, the tower head height; The distance that is lower wire hanging point (11) line bracket (1) to ground is 16.6 meters, and whole tower height degree is limited in 50 meters.
4. double loop according to claim 1 and 2 compact tangent tower; It is characterized in that described body of the tower (5) both sides horizontal symmetrical is furnished with two loop tower windows (3); Be total to six phase lead (2) two times and all adopt V-type insulator string (4) and following cross-arm (8) and last cross-arm (7) to connect respectively, phase conductor (2) vertical interval is 7.1 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200301772U CN202441099U (en) | 2012-01-31 | 2012-01-31 | 500kV dual-loop compact straight-line tower in vertical and symmetrical arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200301772U CN202441099U (en) | 2012-01-31 | 2012-01-31 | 500kV dual-loop compact straight-line tower in vertical and symmetrical arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441099U true CN202441099U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200301772U Expired - Lifetime CN202441099U (en) | 2012-01-31 | 2012-01-31 | 500kV dual-loop compact straight-line tower in vertical and symmetrical arrangement |
Country Status (1)
| Country | Link |
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| CN (1) | CN202441099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561783A (en) * | 2012-01-31 | 2012-07-11 | 浙江省电力设计院 | 500kV vertical-arrangement symmetrical double-circuit compact tangent tower |
-
2012
- 2012-01-31 CN CN2012200301772U patent/CN202441099U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561783A (en) * | 2012-01-31 | 2012-07-11 | 浙江省电力设计院 | 500kV vertical-arrangement symmetrical double-circuit compact tangent tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |
|
| CX01 | Expiry of patent term |