CN204590751U - Double loop abnormity terminal steel pipe pole - Google Patents

Abstract

The utility model provides a double-circuit special-shaped terminal steel pipe pole, including a steel pipe pole, a cable terminal head, a ground wire cross arm, a wire erection cross arm and a ground cross arm. The steel pipe pole is vertically inserted on the ground, and the ground wire The cross arm is erected horizontally on the upper end of the steel pipe pole, and the middle part of the ground wire cross arm is fixedly connected with the steel pipe pole; the wire erection cross arm and the lower ground cross arm are located below the ground wire cross arm. Compared with the traditional method, the utility model saves the branch tower and the terminal field, reduces the line investment and saves the engineering construction cost, and the dual-circuit special-shaped terminal steel pipe pole occupies a small area, is not restricted by the site, and is easy to construct.

Description

Double circuit special-shaped terminal steel pipe pole

technical field

The utility model relates to the field of high-voltage electric power transmission equipment, in particular to a double-circuit special-shaped terminal steel pipe rod.

Background technique

Power transmission is an important link in the power system, and it is closely related to the development of people's daily life. At present, most of the power transmission lines erected along urban roads are overhead lines erected on a double-circuit steel pipe pole for power transmission. When one circuit of the overhead line on the double-circuit steel pipe pole needs to be lowered to the ground, and the other circuit needs to continue to be overhead, the existing solution is to build a base branch tower first, and split the normal double-circuit circuit into two parts through the branch tower. Two single-circuit circuits, and then the single circuit that needs to be lowered to the ground is connected to the terminal steel pipe pole or the terminal field, and the other continues to be processed overhead and connected to the conventional single-circuit steel pipe pole. The branch tower occupies a large area and is severely restricted by the site. At the same time, the cost of the entire line increases.

Utility model content

In view of this, the utility model provides a double-circuit special-shaped terminal steel pipe rod to improve the above problems.

The double-circuit special-shaped terminal steel pipe pole provided by the utility model includes a steel pipe pole, a cable terminal head, a ground wire cross arm, a wire erecting cross arm and a ground cross arm. The steel pipe pole is vertically inserted on the ground, and the ground wire cross arm The pole is erected horizontally on the upper end of the steel pipe pole, and the middle part of the ground cross arm is fixedly connected with the steel pipe pole;

The wire-setting cross-arm and the lower ground cross-arm are located below the ground wire cross-arm, and the three wire-setting cross-arms and one lower ground cross-arm are arranged horizontally and are located on the same vertical line as the ground wire cross-arm. to the plane;

One end of the wire-stretching cross-arm is connected to the steel pipe rod, the other end of the wire-stripping cross-arm is a free end, and the three wire-stretching cross-arms are sequentially arranged at intervals from top to bottom;

The lower ground cross arm is arranged on the side opposite to the wire erecting cross arm, one end of the lower ground cross arm is connected to the steel pipe rod, the other end of the lower ground cross arm is a free end, and the cable terminal It is vertically arranged on the lower ground cross arm, and is used for switching overhead lines and cables.

For the steel pipe pole with double-circuit special-shaped terminal mentioned above, preferably, the lowermost wire-stretching cross-arm among the three wire-stretching cross-arms is located in the same horizontal plane as the lower ground cross-arm. The stringing cross arm and the ground cross arm located on the same plane can make the force on the opposite sides of the double-circuit special-shaped terminal steel pipe pole more uniform, and improve the stability of the double-circuit special-shaped terminal steel pipe pole.

For the above-mentioned double-circuit special-shaped terminal steel pipe rod, preferably, the double-circuit special-shaped terminal steel pipe rod further includes a diagonal stay rod, one end of the diagonal stay rod is connected with the wire-stretching cross-arm and the lower ground cross-arm, the The other end of the diagonal stay rod is connected with the steel pipe rod. The structure of the oblique tie rods and the first cross arm or the second cross arm and the steel pipe rods of each diagonal stay rod group has a high structural strength, and the structure of the first cross arm and the second cross arm is greatly improved by using the diagonal stay rods. Strength, so that the first cross-arm and the second cross-arm can withstand more loads from overhead lines and cable terminals, improve the stability of the first cross-arm and the second cross-arm, and extend the use of double-circuit special-shaped terminal steel pipe poles life.

For the steel pipe rod with double-circuit special-shaped terminal described above, preferably, the cross-sectional area of the bottom of the steel pipe rod is larger than the cross-sectional area of the top of the steel pipe rod. The cross-sectional area of the bottom of the steel pipe rod is larger than the cross-sectional area of the top of the steel pipe rod, so that the center of gravity of the double-circuit special-shaped terminal steel pipe rod can be located at the lower part, and the stability of the double-circuit special-shaped terminal steel pipe rod can be improved. Under the premise of ensuring the structural strength of the double-circuit special-shaped terminal steel pipe rod, the material on the upper part of the double-circuit special-shaped terminal steel pipe rod is reduced, and the production cost of the double-circuit special-shaped terminal steel pipe rod is reduced.

The above-mentioned double-circuit special-shaped terminal steel pipe rod, preferably, the double-circuit special-shaped terminal steel pipe rod also includes lightning arresters, each lightning arrester corresponds to each cable terminal head, and the lightning arrester is adjacent to the cable terminal The head is vertically arranged on the lower cross arm. The lightning arrester is set adjacent to the cable terminal, and the lightning arrester acts as a shunt. The resistance of the material used to make the lightning arrester is much smaller than that of other structures. Lightning arrester, and then release the current to the ground through the steel pipe pole of the double-circuit special-shaped terminal steel pipe pole, so as to prevent the high-voltage current of lightning from flowing through other equipment on the double-circuit special-shaped terminal steel pipe pole, causing damage to other equipment and affecting the normal operation of the power system .

For the above-mentioned double-circuit special-shaped terminal steel pipe pole, preferably, among the three wire-setting cross-arms, the length of the middle wire-setting cross-arm is the longest. The middle wiring cross-arm has the longest length, which can increase the distance from the wire on the middle wiring cross-arm to the upper and lower wiring cross-arms, ensuring the electrical clearance between the wires.

For the above-mentioned double-circuit special-shaped terminal steel pipe pole, preferably, the lengths of the three cross-arms are 4.84m, 5.94m, and 4.5m from top to bottom. A trolley crossarm of this size meets the electrical clearance requirements of conventional power transmission lines between conductors and is suitable for production.

For the above-mentioned double-circuit special-shaped terminal steel pipe pole, preferably, the length of the lower ground cross arm is 6-10m. The length of the downline cross arm can ensure the requirement of the electrical clearance between the wires of the conventional power transmission line.

The above-mentioned double-circuit special-shaped terminal steel pipe pole, preferably, the double-circuit special-shaped terminal steel pipe pole also includes a solar battery and a warning light, the solar battery is fixed on the steel pipe pole, and the solar battery is connected to the warning light. Light connection. During the day, the solar cell absorbs the light energy and converts it into electrical energy and stores it. At night, the solar cell provides power to the warning lights, and uses the warning lights to remind driving vehicles or pedestrians to avoid collisions with steel poles with double-circuit special-shaped terminals. Street lights provide illumination in the area.

For the above-mentioned double-circuit special-shaped terminal steel pipe pole, preferably, the double-circuit special-shaped terminal steel pipe pole also includes an anti-climbing ring, and obstacles are arranged on the anti-climbing ring for blocking climbers. The anti-climbing ring is detachably sleeved outside the steel pipe rod. Use the detachable barriers on the anti-climbing ring outside the steel pipe pole of the double-circuit special-shaped terminal to prevent climbers from climbing to the top of the steel pipe pole of the double-circuit special-shaped terminal to avoid climbing by non-electric workers A double-circuit special-shaped terminal steel pipe pole caused a safety accident. Preferably, the obstacle is a pawl, and a plurality of pawls extend along the radial direction of the anti-climbing ring. As an obstacle, the ratchet can effectively block climbers, and meanwhile the ratchet is light in weight, simple in structure, and low in cost.

Compared with the prior art, the double-circuit special-shaped terminal steel pipe pole provided by the utility model has the following beneficial effects: the top of the steel pipe pole of the double-circuit special-shaped terminal steel pole provided by the utility model is erected with a ground wire cross arm, and the ground wire is erected, One side of the steel pipe pole is equipped with a wire cross arm, and the opposite side of the steel pipe pole is equipped with a ground cross arm, because the wire cross arm is for one circuit in the double circuit, and one circuit has three phases, so there are three three-phase wires Conductors, three three-phase conductors are placed on the three wire cross-arms respectively, and continue to be connected with the subsequent single-circuit overhead steel pipe poles, and cable terminals are arranged side by side on the lower ground cross-arms, which are used to convert single-circuit overhead lines into cables. Line, using a double-circuit special-shaped terminal steel pipe pole, the double-circuit overhead line is divided and transformed into a single-circuit cable line and a single-circuit overhead line, and the sub-circuit and single-circuit overhead line of the double-circuit overhead line are realized. Compared with the traditional method, the conversion to cable lines saves branch towers and terminal fields, reduces line investment, and saves engineering construction costs. Moreover, the double-circuit special-shaped terminal steel poles occupy a small area, are not restricted by the site, and are easy to construct.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of a double-circuit special-shaped terminal steel pipe pole provided by the first embodiment of the utility model;

Fig. 2 is a schematic diagram of a double-circuit special-shaped terminal steel pipe rod provided by the second embodiment of the present invention;

Fig. 3 is a schematic diagram of a steel pipe rod with a double-circuit special-shaped terminal provided by the third embodiment of the present invention.

Among them, the corresponding relationship between reference signs and component names is as follows: steel pipe pole 101, cable terminal head 102, ground wire cross arm 103, wiring cross arm 104, ground cross arm 105, lightning arrester 106, diagonal stay rod 107, solar battery 108, warning light 109, anti-climbing ring 110.

Detailed ways

Power transmission is an important link in the power system, and it is closely related to the development of people's daily life. At present, most of the power transmission lines erected along urban roads are overhead lines erected on a double-circuit steel pipe pole for power transmission.

After long-term research, researchers have found that when one circuit of the overhead line on the double-circuit steel pipe pole needs to be lowered to the ground, and the other circuit needs to continue to be overhead, the existing solution is to build a base branch tower first, through which the branch tower will be connected normally. The double-circuit circuit is split into two single-circuit circuits, and then the single circuit that needs to be grounded is connected to the terminal steel pipe pole or the terminal field, and the other continues to be processed overhead and connected to the conventional single-circuit steel pipe pole, where the branch tower occupies an area of The area is large, severely restricted by the site, and the cost of the entire line is increased.

The utility model provides a double-circuit special-shaped terminal steel pipe rod to improve the above problems.

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

The first, second, third, etc. in the utility model are all different indications, and are not limiting.

Fig. 1 is the schematic diagram of the double-circuit special-shaped terminal steel pipe rod provided by the first embodiment of the utility model; as shown in Fig. , the ground wire cross arm 103, the wire erection cross arm 104 and the lower ground cross arm 105, the steel pipe pole 101 is vertically inserted on the ground, the ground wire cross arm 103 is erected horizontally on the upper end of the steel pipe pole 101, and the middle part of the ground wire cross arm 103 Fixed connection with the steel pipe rod 101;

The wire erecting cross arms 104 and the lower ground cross arms 105 are located below the ground wire cross arms 103, and the three wire erection cross arms 104 and one lower ground cross arm 105 are arranged horizontally and are located in the same vertical plane as the ground wire cross arms 103;

One end of the stringing cross arm 104 is connected with the steel pipe rod 101, the other end of the stringing cross arm 104 is a free end, and three stringing cross arms 104 are arranged at intervals from top to bottom;

The lower ground cross arm 105 is arranged on the steel pipe pole 101 and is arranged on the side opposite to the line cross arm 104. One end of the lower ground cross arm 105 is connected with the steel pipe pole 101, and the other end of the lower ground cross arm 105 is a free end. The cable terminal head 102 It is vertically arranged on the lower ground cross arm 105, and is used for switching overhead lines and cables.

A ground wire cross arm 103 is erected on the top of the steel pipe rod 101 of the double-circuit special-shaped terminal steel pipe rod provided by the first embodiment of the utility model, and the middle part of the ground wire cross arm 103 is fixed on the steel pipe rod 101, and the ground wire cross arm 103 is used for Erect ground wire, under ground wire cross arm 103, be provided with erecting cross arm 104 on one side of steel pipe pole 101, be provided with lower ground cross arm 105 at the opposite side of steel pipe pole 101, ground wire cross arm 103, lower ground The cross arm 105 and the wiring cross arm 104 are all located in the same vertical plane. Because in the prior art, the single circuit in the circuit is three-phase, three wires are needed, and because the wiring cross arm 104 is aimed at one of the double circuits. circuit, so the three three-phase conductors are respectively set up on the three stringing cross arms 104, and continue to be connected with the subsequent single-circuit overhead steel pipe pole 101.

Cable terminals 102 are arranged side by side on the lower ground cross arm 105 to convert the single-circuit overhead line into a cable line, and a double-circuit special-shaped terminal steel pipe pole is used to realize the division and conversion of the double-circuit overhead line into a single-circuit The cable line and a single-circuit overhead line realize the splitting of the double-circuit overhead line into two single-circuit lines and the conversion of the single-circuit overhead line to the cable line. Compared with the traditional branching method, branch towers and terminal fields are omitted. The line investment is reduced, the engineering construction cost is saved, and the double-circuit special-shaped terminal steel pipe pole occupies a small area, is not restricted by the site, and is easy to construct.

The lowermost wire-setting cross-arm 104 among the three wire-setting cross-arms 104 is located in the same horizontal plane as the lower ground cross-arm 105 . The stringing crossarm 104 and the lowering crossarm 105 located on the same plane can make the opposite sides of the double-circuit special-shaped terminal steel pipe pole bear more uniform force, and improve the stability of the double-circuit special-shaped terminal steel pipe pole.

Fig. 2 is a schematic diagram of the double-circuit special-shaped terminal steel pipe rod provided by the second embodiment of the utility model; as shown in Fig. 2, the double-circuit special-shaped terminal steel pipe rod provided by the second embodiment of the utility model is based on the first embodiment , further, the cross-sectional area of the bottom of the steel pipe rod 101 is greater than the cross-sectional area of the top of the steel pipe rod 101 . The cross-sectional area of the bottom of the steel pipe rod 101 is larger than the cross-sectional area of the top of the steel pipe rod 101, which can make the center of gravity of the steel pipe rod with double-circuit special-shaped terminal be located at the lower part, improve the stability of the steel pipe rod with double-circuit special-shaped terminal, and ensure the double-circuit special-shaped terminal steel pipe rod. Under the premise of the structural strength of the special-shaped terminal steel pipe rod of the loop, the material of the upper part of the double-circuit special-shaped terminal steel pipe rod is reduced, and the production cost of the double-circuit special-shaped terminal steel pipe rod is reduced.

The electrical equipment on the steel pipe pole with double-circuit special-shaped terminal is used outdoors and needs to withstand wind and rain. Therefore, the steel pipe pole with double-circuit special-shaped terminal also includes lightning arresters 106, and each lightning arrester 106 corresponds to each cable terminal head 102 one by one. 106 adjacent to the cable terminal head 102 is vertically arranged on the first cross arm or the second cross arm.

The lightning arrester 106 is arranged adjacent to the cable terminal head 102, and the lightning arrester 106 plays a role of shunting. The resistance of the material for making the lightning arrester 106 is much smaller than that of other structures. It is not a discharge phenomenon with other electrical equipment, most of the current flows through the arrester 106, and then releases the current to the ground through the double-circuit special-shaped terminal steel pipe pole, so as to prevent the lightning high-voltage current from flowing through other equipment on the double-circuit special-shaped terminal steel pipe pole, Destroy other equipment and affect the normal operation of the power system.

Among the three wire-setting cross-arms 104, the middle wire-setting cross-arm 104 has the longest length. The wiring cross-arm 104 in the middle is the longest, which can increase the distance from the wires on the middle wiring cross-arm 104 to the upper and lower wiring cross-arms 104, ensuring that there is enough distance between the wires to meet the needs of the electrical clearance. Specifically, in this embodiment, preferably, the lengths of the three stringing cross arms 104 are 4.84m, 5.94m, and 4.5m from top to bottom. The overhead cross arm 104 of this size meets the requirement of the electrical clearance between the wires of conventional power transmission lines and is suitable for production without causing cost increase and waste. The length of the lower cross arm 105 is 6-10m. In this embodiment, preferably, the length of the lower ground cross-arm 105 is 8m, and choosing 8m as the length of the lower-line cross-arm can ensure the requirement of the electrical clearance between the conductors of the conventional power transmission line and is compatible with the three overhead cross-arms 104. When the length is matched and sufficient electrical clearance is met, the steel pipe pole of the double-circuit special-shaped terminal has better stability and is not easy to tilt.

Fig. 3 is a schematic diagram of a steel pipe rod with a double-circuit special-shaped terminal provided by the third embodiment of the present invention. As shown in Figure 3, the double-circuit special-shaped terminal steel pipe rod provided by the third embodiment of the utility model is based on the second embodiment. Further, the double-circuit special-shaped terminal steel pipe rod also includes a diagonal tie rod 107, and the structure of the diagonal stay rod 107 One end is connected with the wire erecting cross arm 104 or the ground cross arm 105 , and the other end of the diagonal stay rod 107 is connected with the steel pipe rod 101 .

Diagonal tie rod 107 and wire cross arm 104 and steel pipe rod 101 or diagonal stay rod 107 and underground cross arm 105 and steel pipe rod 101 constitute three sides of a triangle, and the triangular structure of enclosing the city makes diagonal stay rod 107, wire erection cross arm 104 and steel pipe rod 101. Diagonal tie rods 107, ground cross arms 105 and steel pipe rods 101 have high structural strength and are not easily deformed. To avoid the oblique deformation of the wire-stretching cross-arm 104 and the lower-ground cross-arm 105 due to the long-term bearing of a certain weight load, the structural strength of the wire-rigging cross-arm 104 and the lower-ground cross-arm 105 is greatly improved by using the diagonal stay rod 107, so that the wire-rigging cross-arm 104 And the lower ground cross arm 105 can bear more weight loads from the overhead line and cable terminal head 102, improve the stability of the wire erection cross arm 104 and the lower ground cross arm 105, and prolong the service life of the double-circuit special-shaped terminal steel pipe pole.

Simultaneously, a solar cell 108 and a warning light 109 are arranged on the steel pipe pole 101, the solar cell 108 is electrically connected with the warning light 109, and the warning light 109 can be an LED light, which has low energy consumption and long service life. During the daytime, the solar cell 108 absorbs light energy and converts it into electrical energy and stores it. At night, the solar cell 108 provides power to the warning light 109, and the warning light 109 is used to remind driving vehicles or pedestrians to avoid collision with the double-circuit special-shaped terminal steel pipe pole. It can also provide lighting for areas without street lights.

In recent years, due to the development of the city, the use of steel pipe poles with double-circuit special-shaped terminals will be closer and closer to the city center and crowded places. The anti-climbing ring 110 is detachably sheathed outside the steel pipe pole 101, and obstacles are arranged on the anti-climbing ring 110 for blocking climbers.

Preferably, the obstacle is a pawl, and a plurality of pawls extend along the radial direction of the anti-climbing ring 110 . As an obstacle, the ratchet can effectively block climbers, and meanwhile the ratchet is light in weight, simple in structure, and low in cost. Simultaneously, because the anti-climbing ring 110 is detachable, when the electric worker needs to climb, the anti-climbing ring 110 is unloaded, and just can climb on.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A steel pipe pole with double-circuit special-shaped terminal is characterized in that it comprises a steel pipe pole, a cable terminal head, a ground wire cross arm, a wiring cross arm and a ground cross arm, and the steel pipe pole is vertically inserted on the ground, so that The ground wire cross arm is erected horizontally on the upper end of the steel pipe rod, and the middle part of the ground wire cross arm is fixedly connected with the steel pipe rod; The wire-stretching cross-arm and the lower ground cross-arm are located below the ground wire cross-arm, and the three wire-strength cross-arms and one lower ground cross-arm are arranged horizontally and are located on the same vertical to the plane; One end of the wire-stretching cross-arm is connected to the steel pipe rod, the other end of the wire-stripping cross-arm is a free end, and the three wire-stretching cross-arms are sequentially arranged at intervals from top to bottom; The lower ground cross arm is arranged on the side opposite to the wire erecting cross arm, one end of the lower ground cross arm is connected to the steel pipe rod, the other end of the lower ground cross arm is a free end, and the cable terminal It is vertically arranged on the lower ground cross arm, and is used for switching overhead lines and cables. 2. The double-circuit special-shaped terminal steel pipe pole according to claim 1, characterized in that, the lowermost wire-stretching cross-arm among the three wire-stretching cross-arms is located in the same horizontal plane as the lower ground cross-arm. 3. The double-circuit special-shaped terminal steel pipe rod according to claim 1, characterized in that, the double-circuit special-shaped terminal steel pipe rod also includes a diagonal tie rod, and one end of the diagonal stay rod is connected to the wire cross arm and the lower ground The cross arms are connected, and the other end of the diagonal stay rod is connected with the steel pipe rod. 4. The steel pipe rod with double-circuit special-shaped terminal according to claim 1, characterized in that, the cross-sectional area of the bottom of the steel pipe rod is larger than the cross-sectional area of the top of the steel pipe rod. 5. The double-circuit special-shaped terminal steel pipe rod according to claim 1, characterized in that, the double-circuit special-shaped terminal steel pipe rod also includes lightning arresters, each lightning arrester corresponds to each cable terminal head one by one, and the lightning arresters correspond to each other. Adjacent to the cable terminal head, it is vertically arranged on the lower ground cross arm. 6 . The steel pipe pole with double-circuit special-shaped terminal according to claim 1 , wherein, among the three wire-stretching cross-arms, the length of the middle wire-strapping cross-arm is the longest. 7 . 7. The double-circuit special-shaped terminal steel pipe pole according to claim 6, characterized in that, the lengths of the three said cross arms are 4.84m, 5.94m, and 4.5m from top to bottom. 8. The double-circuit special-shaped terminal steel pipe pole according to claim 1, wherein the length of the lower ground cross arm is 6-10m. 9. The double-circuit special-shaped terminal steel pipe rod according to claim 1, characterized in that, the double-circuit special-shaped terminal steel pipe rod also includes a solar cell and a warning light, and the solar cell is fixed on the steel pipe rod, and the The solar battery is electrically connected with the warning light. 10. The double-circuit special-shaped terminal steel pipe rod according to claim 1, characterized in that, the double-circuit special-shaped terminal steel pipe rod also includes an anti-climbing ring, and obstacles are arranged on the anti-climbing ring for blocking For climbers, the anti-climbing ring is detachably sleeved outside the steel pipe pole.