CN210127694U - Cable terminal pole for breaking one cable in double-circuit same-pole parallel power transmission line - Google Patents
Cable terminal pole for breaking one cable in double-circuit same-pole parallel power transmission line Download PDFInfo
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- CN210127694U CN210127694U CN201920169792.3U CN201920169792U CN210127694U CN 210127694 U CN210127694 U CN 210127694U CN 201920169792 U CN201920169792 U CN 201920169792U CN 210127694 U CN210127694 U CN 210127694U
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Abstract
The utility model discloses a cable terminal pole for one break in a double-circuit and same-pole parallel transmission line, which comprises a cable terminal pole body; an upper layer cross arm structure, a middle layer cross arm structure and a lower layer cross arm structure are distributed at intervals from top to bottom on the upper part of the rod body of the cable terminal rod; the left side and the right side of the front end of the upper-layer cross arm structure are respectively connected with a crewed overhead conductor through a strain insulator string; the left side and the right side of the front end of the middle-layer cross arm structure and the front end of the lower-layer cross arm structure are also respectively connected with a crewed overhead conductor through a strain insulator string; the strain insulator strings are distributed horizontally and are vertical to the rod body of the cable terminal rod. The utility model discloses not only can make and keep sufficient safe distance between the drainage wire that overhead line connects, can also carry out the broken mouth of new line when connecting the operation to a return circuit in the double circuit of putting together on the same pole, need not to have a power failure with another return circuit and handle, guarantee the safe operation of cable termination tower.
Description
Technical Field
The utility model relates to an electric power transmission technical field especially relates to a cable termination pole that is used for brokenly one time among two return same poles of a tower power transmission line.
Background
At present, with the rapid development of economy, the degree of urban construction and enterprise modernization is improved, and the electric power serving as an economic life line meets unprecedented challenges.
In order to meet the power supply requirement, the proportion of the power cable in each large-city power grid is increased more and more. In addition, along with the increase of municipal construction and land development, the high-voltage cable gradually enters the urban area, and the existing high-voltage overhead line in the urban area is gradually transformed into a cable. However, due to the limitation of road network planning and landform, when a pure cable line cannot be implemented, a cable terminal tower and a terminal station are inevitably required to be adopted to realize the switching between the overhead line and the cable line.
For a conventional cable terminal tower, electrical equipment such as a cable terminal and a lightning arrester is arranged on a tower body platform, the tower body platform is generally arranged at a distance of 6-9 m from the ground, the tower body platform is directly connected with a tower body into a whole through a truss structure, and the cable terminal and an overhead line conductor strain clamp are connected through a drainage wire (also called an upper wire and a jumper wire). The tower body cable terminal platform arrangement scheme is also the most basic form of the joint of the high-voltage cable and the overhead line, and becomes the mainstream technical scheme after long-term design, construction and operation and maintenance practical inspection.
At present, for a double-circuit voltage grade same-tower parallel transmission line of 110kV to 220kV, if one side circuit needs to be broken (namely one side circuit is connected with a new circuit), a two-base cable terminal tower needs to be newly built, the occupied area is large, the investment is high, when the new circuit is broken and connected on one circuit, not only the power failure treatment needs to be carried out on the circuit, but also the power failure treatment needs to be carried out on the other circuit in the same-tower parallel double circuit, therefore, the work and life of people are seriously influenced, and the inconvenience is brought to the work and life of people.
In addition, for conventional cable termination towers, which have a plurality of drainage wires (i.e., leading-up wires), because the structural design is unreasonable, the linear distance between the drainage wires connected with the overhead line is too small, so that the distance between the drainage wires connected with the overhead line cannot be kept at a larger safe distance, and certain potential safety hazards in operation exist.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cable terminal pole that is used for brokenly one time among two-circuit same-pole parallel power transmission line, its structural design scientific and reasonable not only can make and keep sufficient safe distance between the drainage wire that overhead line connects, can also be when carrying out the broken mouth connection operation of new circuit to one time circuit in the same-pole parallel double circuit, only need carry out the power failure to the circuit that carries out the broken mouth and handle, need not to have a power failure with another circuit in the same-pole parallel double circuit and handle, effectively guarantee the safe operation of cable terminal tower, work and life for people bring facility, be favorable to using widely, have very big production practice meaning.
Therefore, the utility model provides a cable terminal pole for one break in a double-circuit and same-pole parallel transmission line, which comprises a cable terminal pole body, wherein the cable terminal pole body is vertically arranged on the ground;
an upper layer cross arm structure, a middle layer cross arm structure and a lower layer cross arm structure are distributed at intervals from top to bottom on the upper part of the rod body of the cable terminal rod;
the left side and the right side of the front end of the upper-layer cross arm structure are respectively connected with a crewed overhead conductor through a strain insulator string;
the left side and the right side of the front end of the middle-layer cross arm structure and the left side and the right side of the front end of the lower-layer cross arm structure are respectively connected with a crewed overhead conductor through a strain insulator string;
the strain insulator strings are distributed horizontally and are vertical to the rod body of the cable terminal rod.
The left side and the right side of the body of the cable terminal pole are respectively provided with an independent cable terminal platform;
each independent cable terminal platform comprises a plurality of cable terminal platform main rods and an installation platform;
the main rod of the cable terminal platform is vertically arranged on the ground;
the mounting platforms are horizontally distributed in the transverse direction;
the mounting platform is positioned at the top of the main rods of the cable terminal platforms.
The top of the mounting platform is provided with three groups of platform components which are distributed at intervals in the longitudinal direction, and each group of platform components comprises a cable terminal, a lightning arrester and a lower drainage wire hanging string;
the cable terminal, the lightning arrester and the lower drainage wire hanging string in each group of platform components are transversely distributed at intervals;
and the cable terminal, the lightning arrester and the lower drainage wire hanging string in each group of platform assemblies are connected in sequence through the lead wires.
Wherein the upper cross arm structure comprises a first upper cross arm and a second upper cross arm;
the first upper cross arm and the second upper cross arm are respectively connected with the body of the cable terminal pole
The first upper cross arm and the second upper cross arm are positioned on the same longitudinal axis;
the left side and the right side of the front end of the first upper cross arm are respectively connected with a crewed overhead conductor through a strain insulator string;
the left side and the right side of the rear end of the second upper cross arm are respectively connected with a sub cross arm;
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the second upper cross arm, of each sub cross arm, and an upper drainage wire hanging string is mounted in each upper drainage hanging string mounting hanging hole;
one end of a first drainage wire distributed in an arc shape is connected with a crewed overhead conductor through a strain insulator string;
the other end of the first drainage wire is connected with the second drainage wire through an upper drainage wire hanging string;
the second drainage wire is connected with the upper end of a lower drainage wire hanging string at the top of the mounting platform of the cable terminal platform below.
Wherein the extension direction of the sub cross arm is the same as that of the crevasse overhead conductor.
The middle-layer cross arm structure is a three-side cross arm, and the three-side cross arm is T-shaped.
The middle-layer cross arm structure comprises a first middle cross arm and two second middle cross arms;
the two second middle cross arms are positioned at the left side and the right side of the body of the cable terminal rod;
the first middle cross arm is positioned on the front surface of the rod body of the cable terminal rod and is vertical to the two second middle cross arms;
the left side and the right side of the front end of the first middle cross arm are respectively connected with a crewed overhead conductor through a strain insulator string;
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the body of the cable terminal pole, of each of the two second middle cross arms, and an upper drainage wire hanging string is mounted in the upper drainage hanging string mounting hanging hole;
one end of a first drainage wire distributed in an arc shape is connected with a crewed overhead conductor through a strain insulator string;
the other end of the first drainage wire is connected with the second drainage wire through an upper drainage wire hanging string;
the second drainage wire hangs the cluster upper end with the lower drainage wire that is located the mounting platform top of cable termination platform of below and is connected.
Wherein the lower cross arm structure comprises a lower cross arm;
the lower cross arm is vertical to the front side of the rod body of the cable terminal rod;
the left side and the right side of the front end of the lower cross arm are respectively connected with a crewed overhead conductor through a strain insulator string;
one end of a second drainage wire is connected with the crewed overhead conductor through a strain insulator string;
the other end of the second drainage wire is connected with the upper end of a lower drainage wire hanging string at the top of the mounting platform of the cable terminal platform below.
The upper drainage wire hanging string is vertically distributed and is perpendicular to an upper layer cross arm structure, a middle layer cross arm structure or a lower layer cross arm structure where the upper drainage wire hanging string is located;
the projections of the upper-layer cross arm structure and the middle-layer cross arm structure on the horizontal plane are in a shape like the Chinese character 'tu'.
The top of the rod body of the cable terminal rod is also provided with a ground wire cross arm layer;
the ground wire cross arm layer comprises two horizontally distributed ground wire cross arms;
the two ground wire cross arms are positioned on the same axis;
one end of the ground wire cross arm is connected with the rod body of the cable terminal rod, and the other end of the ground wire cross arm is connected with a ground wire;
the body of the cable terminal pole is preferably a steel pipe pole;
the steel pipe rod is a steel pipe with the pipe diameter of the lower end larger than that of the upper end;
each cable terminal head is provided with a transition wire clamp;
each transition wire clamp is correspondingly connected with one lightning arrester through a lead;
the lower part of each mounting platform is sleeved with a hollow cable protection pipe;
the power cable extends through the inner cavity of the cable protection tube;
the lower end of the lower drainage wire hanging string is connected with the top of the mounting platform, and the upper end of the lower drainage wire hanging string is provided with a strain clamp;
the cable grounding box is connected with the metal protective layer in the power cable sheath through the grounding cable, so that the metal protective layer of the power cable is reliably grounded.
By the above the technical scheme provided by the utility model, it is visible to compare with prior art, the utility model provides a cable terminal pole that is arranged in brokenly one time in the double-circuit same-pole parallel power transmission line, its structural design scientific and reasonable not only can make and keep sufficient safe distance between the drainage wire that overhead line connects, can also be when carrying out the broken mouth connection operation of new line to one time circuit in the same-pole parallel double-circuit, only need carry out the power failure to the circuit that breaks the mouth and handle, need not to carry out the power failure with another circuit in the same-pole parallel double-circuit and handle, effectively guarantee the safe operation of cable terminal tower, work and life for people bring facility, be favorable to using widely, have the production practice meaning of great importance.
The utility model provides a be used for cable terminal pole of breach one time among the double-circuit same-tower parallel transmission line, it leads to the power cable who goes into the ground with built on stilts power line, and it can make and keep sufficient safe distance between overhead line's the drainage wire, and its outward appearance is more harmonious pleasing to the eye, and the wiring construction is clear convenient, can not too much occupy the installation area, more practices thrift the investment.
And simultaneously, to the utility model provides an it is used for the cable terminal pole of breach one time in the double-circuit same-tower transmission line, it has the drainage line of overhead line and keeps sufficient safe distance between the cable terminal pole body, has further promoted the security performance of cable terminal tower.
Drawings
Fig. 1 is a schematic perspective view of a cable terminal rod for one break in a double-circuit and same-pole parallel transmission line provided by the present invention;
fig. 2 is a schematic front structural view of a cable terminal pole for one break in a double-circuit same-pole parallel transmission line provided by the present invention;
fig. 3 is a side view of a cable terminal pole for one break in a double-circuit same-pole parallel transmission line provided by the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;
in the figure: 1 is a cable terminal pole body; 2 is a ground wire cross arm; 31 is a first upper cross arm, 32 is a second upper cross arm, and 33 is a sub cross arm; 41 is a first middle cross arm, and 42 is a second middle cross arm; 5 is a lower cross arm;
6 is a strain insulator string; 7 is an upper drainage wire hanging string; 8 is a crevassed overhead conductor; a first drainage thread 91 and a second drainage thread 92;
13 is a cable grounding box; 10 is a lower drainage wire hanging string; 11 is a lightning arrester; 12 is a cable terminal;
17 is a transition wire clamp; 15 is a mounting platform; 16 is a cable protection pipe; 18 is a ground line; and 14 is a cable termination platform main rod.
Detailed Description
In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 5, the utility model provides a cable terminal pole for breaking one time in a double-circuit and same-pole parallel transmission line, which comprises a cable terminal pole body 1, wherein the cable terminal pole body 1 is vertically arranged on the ground;
an upper layer cross arm structure, a middle layer cross arm structure and a lower layer cross arm structure are distributed at intervals from top to bottom on the upper part of the cable terminal pole body 1;
the left side and the right side of the front end of the upper-layer cross arm structure are respectively connected with a broken overhead conductor 8 through a strain insulator string 6;
the left side and the right side of the front end of the middle-layer cross arm structure and the front end of the lower-layer cross arm structure are also respectively connected with a crevasse overhead conductor 8 through a strain insulator string 6;
the strain insulator strings 6 are distributed horizontally and are vertical to the cable terminal rod body 1.
The crewed overhead conductor 8 mainly refers to an overhead open wire which is not continuously wired and can be connected with a new line in the middle, and is a power transmission line for transmitting electric energy by fixing a power transmission conductor on a tower standing on the ground through an insulator.
The utility model discloses in, it is required to explain that upper strata cross arm structure, middle level cross arm structure and lower floor's cross arm structure are the wire cross arm, according to user's needs to and specific circumstances, can also increase quantity.
In the concrete implementation, the upper layer cross arm structure, the middle layer cross arm structure and the lower layer cross arm structure are rod pieces, and the inner ends of the rod pieces are connected with the rod body 1 of the cable terminal rod through a connecting component.
In the utility model, in the concrete implementation, the left and right sides of the cable terminal pole body 1 are respectively provided with an independent cable terminal platform;
each independent cable termination platform comprises a plurality of cable termination platform main rods 14 and a mounting platform 15;
the cable terminal platform main rod 14 is vertically arranged on the ground;
the mounting platforms 15 are horizontally distributed in the transverse direction;
the mounting platform 15 is located on top of a plurality of cable termination platform masts 14 (not limited to three as shown, and any number may be provided as desired).
In a concrete implementation manner, three groups of platform components distributed at intervals in the longitudinal direction are mounted at the top of the mounting platform 15, and each group of platform components comprises a cable terminal 12, a lightning arrester 11 and a lower drainage wire hanging string 10;
the cable terminal 12, the lightning arrester 11 and the lower drainage wire hanging string 10 in each group of platform components are transversely distributed at intervals;
the cable terminal 12, the lightning arrester 11 and the lower drainage wire hanging string 10 in each set of platform assembly are connected in sequence through the lead wires, that is, the three are collinear and are electrically connected.
In the present invention, in a specific implementation, the upper cross arm structure includes a first upper cross arm 31 and a second upper cross arm 32;
the first upper cross arm 31 and the second upper cross arm 32 are respectively connected with the cable terminal pole body 1
The first upper cross arm 31 and the second upper cross arm 32 are located on the same longitudinal axis;
the left side and the right side of the front end of the first upper cross arm 31 are respectively connected with a broken overhead conductor 8 through a strain insulator string 6;
the left side and the right side of the rear end of the second upper cross arm 32 are respectively connected with a sub cross arm 33;
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the second upper cross arm 32, of each sub cross arm 33, and an upper drainage wire hanging string 7 is mounted in each upper drainage hanging string mounting hanging hole;
one end of a first drainage wire 91 distributed in an arc shape is connected with a crevasse overhead conductor 8 through a strain insulator string 6;
the other end of the first drainage wire 91 is connected to a second drainage wire 92 by an upper drainage wire sling 7.
In particular, the second drain wire 92 is connected to the upper end of the lower drain wire sling 10 at the top of the mounting platform of the cable termination platform below.
In a specific implementation, the sub cross arm 33 and the broken overhead conductor 8 extend in the same direction, that is, along the line direction of the broken overhead conductor 8.
That is to say, to the utility model discloses, the first drainage wire 91 that is located the upper strata by crevasse air wire 8 hangs 7 drainage downwards from strain insulator string 6 to the supreme drainage wire, then hangs string 10 with cable termination platform's mounting platform's drainage down again and is connected.
The utility model discloses in, specifically realize, middle level cross arm structure is three side cross arms, and three side cross arms are "T" style of calligraphy.
In a specific implementation, the middle-layer cross arm structure includes a first middle cross arm 41 and two second middle cross arms 42;
the two second middle cross arms 42 are positioned at the left side and the right side of the cable terminal pole body 1;
the first middle cross-arm 41 is located on the front side of the cable termination pole body 1 and is perpendicular to the two second middle cross-arms 42.
The left side and the right side of the front end of the first middle cross arm 41 are respectively connected with a broken overhead conductor 8 through a strain insulator string 6;
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the body 1 of the cable terminal pole, of each of the two second middle cross arms 42, and an upper drainage wire hanging string 7 is mounted in the upper drainage hanging string mounting hanging hole;
one end of a first drainage wire 91 distributed in an arc shape is connected with a crevasse overhead conductor 8 through a strain insulator string 6;
the other end of the first drainage wire 91 is connected to a second drainage wire 92 by an upper drainage wire sling 7.
In particular, the second drainage wire 92 is connected to the upper end of a lower drainage wire hanger string at the top of the mounting platform of the cable termination platform below.
That is to say, to the utility model discloses, be located the medial first drainage wire 91 by crevasse air wire 8 and hang 7 drainage downwards from strain insulator string 6 to the supreme drainage wire, then, hang string 10 with cable termination platform's drainage down again and be connected.
In the utility model, in the concrete implementation, the lower layer cross arm structure is a unilateral cross arm, including a lower cross arm 5;
the lower cross arm 5 is vertical to the front surface of the cable terminal rod body 1;
the left side and the right side of the front end of the lower cross arm 5 are respectively connected with a crewed overhead conductor 8 through a strain insulator string 6;
one end of a second drainage wire 92 is connected with the crewed overhead conductor 8 through a strain insulator string 6;
the other end of the second drain wire 92 is connected to the upper end of the lower drain wire sling 10 at the top of the mounting platform of the cable termination platform below.
That is to say, to the utility model discloses, the second drainage wire 92 that is located the broken mouthful overhead conductor 8 of lower floor hangs string 10 with cable termination platform's drainage from strain insulator string 6 is direct drainage downwards.
The utility model discloses in, on specifically realizing, it hangs 7 vertical distributions of cluster to go up the drainage wire to rather than the upper strata cross arm structure, middle level cross arm structure or the lower floor cross arm structure at place mutually perpendicular.
In a concrete implementation, projections of the upper-layer cross arm structure and the middle-layer cross arm structure on a horizontal plane (namely a plane vertical to the axis of the rod body 1 of the cable terminal rod) are in a shape of a Chinese character 'tu'.
In the utility model, in the concrete implementation, the top of the cable terminal pole body 1 is also provided with a ground wire cross arm layer;
the ground wire cross arm layer comprises two horizontally distributed ground wire cross arms 2;
the two ground wire cross arms 2 are positioned on the same axis;
one end of the ground wire cross arm 2 is connected with the cable terminal pole body 1, and the other end is connected with the ground wire 18.
In the utility model, in particular, the cable terminal pole body 1 is preferably a steel pipe pole;
the steel pipe pole adopts the steel pipe that the lower extreme pipe diameter is greater than the pipe diameter of upper end.
In the concrete implementation, the bottom end of the rod body of the steel pipe rod is fixedly connected with a connecting plate vertical to the rod body, bolt holes are formed in the connecting plate, and stiffening plates which are distributed around the rod body and are axially arranged are arranged on the connecting plate.
In a specific implementation, the lower end of the second drainage wire 92 is connected to the upper end (specifically, the strain clamp at the upper end) of the lower drainage wire hanging string 10.
In particular, the distance between the mounting platform 15 and the ground is preferably 6-9 m;
in the concrete implementation, each cable terminal 12 is provided with a transition wire clamp 17;
each transition wire clamp 17 is correspondingly connected with one lightning arrester 11 through a lead;
the lower part of each mounting platform 15 is sleeved with a hollow cable protection pipe 16;
the power cable 19 extends through the inner cavity of the cable protection tube 16.
In the specific implementation, the lower end of the lower drainage wire hanging string 10 is connected with the top of the mounting platform 15, and the upper end of the lower drainage wire hanging string 10 is provided with a strain clamp.
In specific implementation, the installation platform 15 is further provided with a cable grounding box 13, and the cable grounding box 13 is connected with the metal sheath of the power cable sheath through a grounding cable, so that the metal sheath of the power cable is reliably grounded.
It should be noted that, to the utility model discloses, strain insulator string 6, its purpose is on satisfying insulation distance's basis, connecting wire and iron tower.
And the upper drainage wire hanging string 7 is used for turning the horizontal overhead wire into a downward vertical direction.
And the first drainage wire 91 is used for electrically connecting the strain insulator string 6 with the upper drainage wire hanging string 7.
The second drainage wire 92 is used for electrically connecting the upstream lead hanging string 7 with the lower drainage wire hanging string 10.
The cable grounding box 13 is a device for grounding a cable.
The lower drainage wire hanging string 10 is an electrical component which changes a vertical direction wire into a horizontal direction wire to be conveyed to a cable platform.
The lightning arrester 11 is a component for performing lightning protection on a cable.
The cable termination 12 is an electrical component that connects the overhead conductor to the copper core cable.
The transition wire clamp 17 is a hardware fitting for connecting the cable terminal with the lead on the platform.
The cable protection tube 16 protects the buried cable vertically up to the platform.
According to the technical scheme provided by the utility model, the utility model discloses to go up cross arm, well cross arm and adopt "native" style of calligraphy arrangement mode for many drainage lines can both keep sufficient safe distance between the cable termination pole body.
It should be noted that, right the utility model discloses, when carrying out the breach operation to a return transmission line in the double-circuit same-tower parallel power transmission line, only need have a power failure to this return transmission line, then carry out the breach operation, because strain insulator string's existence has realized the safety isolation of two return transmission lines, two return transmission lines can not interfere with each other, consequently need not to carry out the power failure operation to another return transmission line, consequently, the utility model discloses can effectively guarantee the safe operation of cable termination tower, the work and the life of giving people bring the facility. The utility model discloses compare the current traditional scheme that needs newly establish two basic cable termination towers, practiced thrift the investment.
Furthermore, the utility model discloses a set up the form of stand alone type cable termination platform by cable termination pole, be favorable to cable termination pole body and cable termination platform's later stage operation maintenance.
It is to be noted that the utility model discloses in, voltage class does not have obvious influence to cable termination tower cross arm and cable termination platform's arrangement pattern, consequently, the technical scheme of the utility model, can be applied to the scheme under the different voltage classes. And simultaneously, the technical scheme of the utility model, be applicable to two return overhead line unilateral hanging wire equally, consequently, the technical scheme of the utility model, one side cross arm and cable platform can be removed.
To sum up, compared with the prior art, the utility model provides a pair of cable terminal pole that is arranged in brokenly one time in double-circuit same-pole parallel power transmission line, its structural design scientific and reasonable not only can make and keep sufficient safe distance between the drainage wire that overhead line connects, can also be when carrying out the brokenly mouthful connection operation of new line to one time circuit in the same-pole parallel double-circuit, only need carry out the power failure to the circuit that carries out the brokenly and handle, need not to carry out the power failure with another circuit in the same-pole parallel double-circuit and handle, effectively guarantee the safe operation of cable terminal tower, work and life for people bring facility, be favorable to using widely, have the production practice meaning of great.
The utility model provides a be used for cable terminal pole of breach one time among the double-circuit same-tower parallel transmission line, it leads to the power cable who goes into the ground with built on stilts power line, and it can make and keep sufficient safe distance between overhead line's the drainage wire, and its outward appearance is more harmonious pleasing to the eye, and the wiring construction is clear convenient, can not too much occupy the installation area, more practices thrift the investment.
And simultaneously, to the utility model provides an it is used for the cable terminal pole of breach one time in the double-circuit same-tower transmission line, it has the drainage line of overhead line and keeps sufficient safe distance between the cable terminal pole body, has further promoted the security performance of cable terminal tower.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A cable terminal pole for breaking one side in a double-circuit and same-pole parallel power transmission line is characterized by comprising a cable terminal pole body (1), wherein the cable terminal pole body (1) is vertically arranged on the ground;
an upper layer cross arm structure, a middle layer cross arm structure and a lower layer cross arm structure are distributed at intervals from top to bottom on the upper part of the cable terminal pole body (1);
the left side and the right side of the front end of the upper-layer cross arm structure are respectively connected with a crewed overhead conductor (8) through a strain insulator string (6);
the left side and the right side of the front end of the middle-layer cross arm structure and the front end of the lower-layer cross arm structure are respectively connected with a crevasse overhead conductor (8) through a strain insulator string (6);
the strain insulator strings (6) are distributed horizontally and are vertical to the rod body (1) of the cable terminal rod.
2. Cable termination pole according to claim 1, characterized in that the left and right sides of the cable termination pole body (1) are provided with a freestanding cable termination platform, respectively;
each independent cable termination platform comprises a plurality of cable termination platform main rods (14) and a mounting platform (15);
the cable terminal platform main rod (14) is vertically arranged on the ground;
the mounting platforms (15) are horizontally distributed in the transverse direction;
the mounting platform (15) is positioned on the top of the main rods (14) of the cable terminal platforms.
3. Cable termination pole according to claim 2, characterized in that three sets of platform assemblies are mounted on top of the mounting platform (15) at intervals in the longitudinal direction, each set of platform assemblies comprising one cable termination head (12), one lightning arrester (11) and one lower drain string (10);
the cable terminal (12), the lightning arrester (11) and the lower drainage wire hanging string (10) in each group of platform components are transversely distributed at intervals;
and the cable terminal (12), the lightning arrester (11) and the lower drainage wire hanging string (10) in each group of platform components are connected in sequence through the lead wires.
4. Cable termination pole according to claim 3, characterized in that the upper level cross arm structure comprises a first upper cross arm (31) and a second upper cross arm (32);
the first upper cross arm (31) and the second upper cross arm (32) are respectively connected with a cable terminal pole body (1)
The first upper cross arm (31) and the second upper cross arm (32) are positioned on the same longitudinal axis;
the left side and the right side of the front end of the first upper cross arm (31) are respectively connected with a crevasse overhead conductor (8) through a strain insulator string (6);
the left side and the right side of the rear end of the second upper cross arm (32) are respectively connected with a sub cross arm (33);
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the second upper cross arm (32), of each sub cross arm (33), and an upper drainage wire hanging string (7) is mounted in each upper drainage hanging string mounting hanging hole;
one end of a first drainage wire (91) distributed in an arc shape is connected with a crewed overhead conductor (8) through a strain insulator string (6);
the other end of the first drainage wire (91) is connected with a second drainage wire (92) through an upper drainage wire hanging string (7);
the second drainage wire (92) is connected with the upper end of a lower drainage wire hanging string (10) at the top of the mounting platform of the cable terminal platform below.
5. Cable termination pole according to claim 4, characterized in that the sub-crossarm (33) extends in the same direction as the breached overhead conductor (8).
6. The cable termination pole of claim 3, wherein the middle cross-arm structure is a three-sided cross-arm, the three-sided cross-arm being "T" -shaped.
7. The cable termination pole according to claim 6, wherein the middle cross-arm structure comprises a first middle cross-arm (41) and two second middle cross-arms (42);
the two second middle cross arms (42) are positioned at the left side and the right side of the body (1) of the cable terminal rod;
the first middle cross arm (41) is positioned on the front surface of the cable terminal pole body (1) and is vertical to the two second middle cross arms (42);
the left side and the right side of the front end of the first middle cross arm (41) are respectively connected with a crewed overhead conductor (8) through a strain insulator string (6);
an upper drainage hanging string mounting hanging hole is formed in one end, far away from the body (1) of the cable terminal pole, of each of the two second middle cross arms (42), and an upper drainage wire hanging string (7) is mounted in the upper drainage hanging string mounting hanging hole;
one end of a first drainage wire (91) distributed in an arc shape is connected with a crewed overhead conductor (8) through a strain insulator string (6);
the other end of the first drainage wire (91) is connected with a second drainage wire (92) through an upper drainage wire hanging string (7);
the second drainage wire (92) is connected with the upper end of a lower drainage wire hanging string at the top of the mounting platform of the cable terminal platform below.
8. Cable termination pole according to claim 3, characterized in that the lower cross-arm structure comprises a lower cross-arm (5);
the lower cross arm (5) is vertical to the front surface of the cable terminal rod body (1);
the left side and the right side of the front end of the lower cross arm (5) are respectively connected with a crewed overhead conductor (8) through a strain insulator string (6);
one end of a second drainage wire (92) is connected with the crewed overhead conductor (8) through a strain insulator string (6);
the other end of the second drainage wire (92) is connected with the upper end of a lower drainage wire hanging string (10) at the top of the mounting platform of the cable terminal platform below.
9. The cable termination bar according to claim 4 or 5, wherein the upper drainage wire hanging strings (7) are vertically distributed and perpendicular to the upper, middle or lower cross-arm structure on which they are located;
the projections of the upper-layer cross arm structure and the middle-layer cross arm structure on the horizontal plane are in a shape like the Chinese character 'tu'.
10. Cable termination pole according to any of claims 4 to 8, characterized in that a ground cross-arm layer is also mounted on top of the cable termination pole body (1);
the ground wire cross arm layer comprises two horizontally distributed ground wire cross arms (2);
the two ground wire cross arms (2) are positioned on the same axis;
one end of the ground wire cross arm (2) is connected with the cable terminal rod body (1), and the other end of the ground wire cross arm is connected with a ground wire (18);
the cable terminal pole body (1) is a steel pipe pole;
the steel pipe rod is a steel pipe with the pipe diameter of the lower end larger than that of the upper end;
each cable terminal (12) is provided with a transition wire clamp (17);
each transition wire clamp (17) is correspondingly connected with one lightning arrester (11) through a lead;
the lower part of each mounting platform (15) is sleeved with a hollow cable protection pipe (16);
the power cable extends through the inner cavity of the cable protection tube (16);
the lower end of the lower drainage wire hanging string (10) is connected with the top of the mounting platform (15), and a strain clamp is arranged at the upper end of the lower drainage wire hanging string (10);
the cable grounding box (13) is further mounted on the mounting platform (15), and the cable grounding box (13) is connected with a metal protective layer in a power cable sheath through a grounding cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169792.3U CN210127694U (en) | 2019-01-31 | 2019-01-31 | Cable terminal pole for breaking one cable in double-circuit same-pole parallel power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920169792.3U CN210127694U (en) | 2019-01-31 | 2019-01-31 | Cable terminal pole for breaking one cable in double-circuit same-pole parallel power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210127694U true CN210127694U (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920169792.3U Active CN210127694U (en) | 2019-01-31 | 2019-01-31 | Cable terminal pole for breaking one cable in double-circuit same-pole parallel power transmission line |
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| CN (1) | CN210127694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779373A (en) * | 2019-01-31 | 2019-05-21 | 中国能源建设集团天津电力设计院有限公司 | A kind of cable terminal pole returned in doublecircuit lines on the same tower transmission line of electricity for cut one |
-
2019
- 2019-01-31 CN CN201920169792.3U patent/CN210127694U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779373A (en) * | 2019-01-31 | 2019-05-21 | 中国能源建设集团天津电力设计院有限公司 | A kind of cable terminal pole returned in doublecircuit lines on the same tower transmission line of electricity for cut one |
| CN109779373B (en) * | 2019-01-31 | 2024-05-14 | 中国能源建设集团天津电力设计院有限公司 | Cable terminal rod for breaking one circuit in double-circuit same-rod parallel-rack transmission line |
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