Telescopic conductor

Abstract

The utility model relates to a telescopic conductor, which comprises an outer conductor and an inner conductor connected in the outer conductor in a sliding manner, the inner conductor is provided with a spring contact finger connected with the outer conductor, the inner conductor is also connected with a guide rod positioned in the outer conductor, and the outer conductor is also connected with a shielding cover for preventing the inner conductor from sliding. During use and GIS (Gas Insulated Switchgear) assembly, the bus cylinder can be firstly assembled, after the bus cylinder is assembled, the guide rod is inserted into the outer conductor, and the total length of the conductor is adjusted by utilizing the characteristic that the inner conductor slides in the outer conductor, so that the inner conductor of the bus cylinder is convenient to install; compared with the operation of simultaneously ensuring the coaxiality of the bus cylinders and the coaxiality of the internal conductors due to the fact that the plurality of bus cylinders and the internal conductors are in butt joint together, through the arrangement of the internal conductors and the external conductors, the internal conductors are installed after the bus cylinders are installed, so that the installation operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of GIS, especially the field of GIS installation technology, and concretely relates to a telescopic conductor. BACKGROUND

[0002] At present, two schemes are usually used for the internal conductor of GIS; one is that the plum blossom contact is matched with the conductor connector plug-in connection, and the other is that the conductor connector is directly inserted into the contact seat with spring contact fingers, and the two schemes are most widely used. The two schemes have respective advantages, wherein the radial size adjustment amount of the conductor using the plum blossom contact is larger than the spring contact finger adjustment amount, but the axial adjustment amount of the spring contact finger scheme is larger.

[0003] The GIS equipment using the above two schemes has the same defects, when the GIS compartments are butt-jointed, or the compartments need to be overhauled or repaired due to faults, the two adjacent compartments are easily caused to abnormally stress the internal insulating support of the busbar cylinder during the butt-jointing or dismounting process, because the compartments are connected through the busbar cylinder, the busbar cylinder and the internal conductor are simultaneously installed and dismounted, the two end connectors of the conductor are inserted into the plum blossom contacts on the two sides, and the compartments are slightly moved in the radial direction of the busbar, which easily drives the internal conductor to move, the two sides of the conductor have guide rods, which easily pry and split the insulating support of the busbar, and cause the occurrence of flashover discharge.

[0004] The conventional conductor is combined by bolts, plugs and connectors, and the two side connectors are inserted into the guide rods in the plum blossom contacts. The conventional compartment butt-jointing needs to simultaneously ensure that the multiple long conductors and the multiple plum blossom contacts in the busbar cylinders on the two sides maintain good coaxiality, and also needs to ensure that the two large-size busbar cylinders and the flanges thereof maintain coaxiality within the specified error range, so that the installation difficulty is caused. UTILITY MODEL CONTENTS

[0005] The utility model provides a telescopic conductor in view of the deficiency of prior art, when the conventional multiple busbar cylinders are butt-jointed, the multiple busbar cylinders are butt-jointed with the internal conductor, so that the coaxiality of the busbar cylinders and the coaxiality of the internal conductor need to be simultaneously ensured, compared with the operation, the internal conductor is installed after the busbar cylinder is installed, so that the installation operation is facilitated.

[0006] The utility model is realized through the following technical schemes, a telescopic conductor, including outer conductor, and the inner conductor of sliding connection in the outer conductor, be equipped with spring contact finger that connects with the outer conductor on the inner conductor, still be connected with the guide rod in the outer conductor on the inner conductor, still be connected with the shielding case that prevents the inner conductor from sliding on the outer conductor.

[0007] The utility model discloses a when using, can first carry out the assembly of busbar cylinder in the GIS assembly, after busbar cylinder assembly is completed, personnel drills into busbar cylinder or installs the outer conductor from the busbar cylinder pullout, and make the guide stick insert into the outer conductor, utilize the characteristic adjustment conductor's total length of inner conductor in the outer conductor sliding, thereby facilitate the installation of inner conductor in busbar cylinder, when the conventional several busbar cylinders are docked in the conventional mode, several busbar cylinders are docked together with internal conductor, thus need guarantee the coaxiality of busbar cylinder and the operation of internal conductor coaxiality compared, through the setting of inner conductor and outer conductor, after the installation of internal conductor is carried out after busbar cylinder installation is completed, thereby convenient installation operation.

[0008] As preferred, the inner cavity of the outer conductor is further provided with an annular step, the step extends obliquely from outside to inside, the inner conductor is provided with an annular protrusion on the end face inside the outer conductor, the outer diameter of the protrusion is greater than the maximum inner diameter of the step, and the outer diameter of the guide rod is less than the minimum inner diameter of the step.

[0009] In use, the step and the protrusion cooperate to limit the movement of the inner conductor into the outer conductor, thereby limiting the position.

[0010] As preferred, the guide rod is threadedly connected with the inner conductor and coaxially arranged with the inner conductor, and the outer diameter of the guide rod is greater than the outer diameter of the inner conductor.

[0011] The arrangement of the preferred embodiment facilitates the connection of the guide rod and the inner conductor. When the outer conductor is inclined under the action of gravity, the guide rod can support the outer conductor at the first time. The inclination angle between the guide rod and the inner circumferential surface of the outer conductor, the length of the guide rod, and the difference between the outer diameter of the guide rod and the inner diameter of the outer conductor affect the inclination angle.

[0012] As preferred, the inclination angle of the step is 5-10°.

[0013] The preferred embodiment provides data support for processing by setting the inclination angle of the step. The inclination angle can be determined according to the diameter of the outer conductor and the length of the inner conductor.

[0014] As preferred, the inner conductor is connected at one end with a limiting connector connected with an electric connection, the limiting connector includes coaxially arranged first, second, and third ring segments with decreasing outer diameters, the third ring segment is connected with the inner conductor, and the electric connection is elastically connected with an annular contact ring, the inner diameter of the contact ring is adapted to the second ring segment, and the end face of the contact ring close to the outer conductor is a guide surface for guiding the insertion of the first ring segment.

[0015] The third ring segment is arranged to facilitate the connection of the limiting connector with the inner conductor, the first ring segment and the contact ring are arranged to facilitate the limitation of the pulling out of the limiting connector from the electrical connection, and the second ring segment is arranged to ensure the contact connection of the contact ring and the limiting connector.

[0016] Preferably, a withdrawal ring is arranged on the second ring segment and is connected with the second ring segment in the axial direction, the withdrawal ring is tapered, the small-diameter end of the withdrawal ring is located between the large-diameter end and the third ring segment, the small-diameter end of the withdrawal ring is matched with the outer diameter of the second ring segment, and the diameter of the large-diameter end of the withdrawal ring is matched with the diameter of the first ring segment.

[0017] The preferred embodiment is arranged with the withdrawal ring, when the limiting connector needs to be taken out from the electrical connection, the limiting connector is continuously moved into the spring contact finger, the withdrawal ring is moved to the inside of the electrical connection under the guidance of the guide surface, and then the inner conductor is moved into the outer conductor, even if the first ring segment moves to the contact ring, the contact ring pushes the withdrawal ring to the top of the first ring segment, under the guidance of the circumferential surface of the withdrawal ring, the opening of the contact ring is increased, and the contact ring is in contact with the circumferential surface of the first ring segment, so that the first ring segment is separated from the electrical connection.

[0018] Preferably, a guide column is arranged in the electrical connection and inserted into the first ring segment.

[0019] The preferred embodiment is arranged with the guide column, and the guide column provides a guide and support.

[0020] Preferably, two inner conductors are arranged symmetrically.

[0021] The beneficial effects of the utility model are as follows: during the assembly of GIS, the busbar cylinder can be assembled first, after the assembly of the busbar cylinder is completed, personnel can drill into the busbar cylinder or install the outer conductor from the busbar cylinder, and the guide rod is inserted into the outer conductor, the total length of the conductor is adjusted by the sliding characteristics of the inner conductor in the outer conductor, thereby facilitating the installation of the inner conductor of the busbar cylinder, and compared with the conventional mode, when a plurality of busbar cylinders are connected, the plurality of busbar cylinders are connected with the inner conductors, and therefore the coaxialities of the busbar cylinders and the inner conductors need to be ensured, after the installation of the busbar cylinder is completed, the installation of the inner conductor is performed, thereby facilitating the installation operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a partial exploded view of the utility model structure;

[0024] Figure 3 It is a schematic diagram of the busbar cylinder of the utility model;

[0025] Figure 4 Schematic diagram for the step of disengaging the limiting joint from the electrical connection;

[0026] Figure 5 Schematic diagram for the prior art busbar cylinder connection;

[0027] Figure 6 Schematic diagram for the internal conductor of the prior art busbar cylinder;

[0028] The figure shows:

[0029] 1, outer conductor, 2, inner conductor, 3, spring contact finger, 4, step, 5, guide rod, 6, shield, 7, limiting joint, 8, guide ring, 9, contact ring, 10, electrical connection, 11, guide post, 12, busbar cylinder, 71, first ring segment, 72, second ring segment, 73, third ring segment. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of the present scheme, the present scheme will be described below through specific embodiments.

[0031] Referring to the accompanying Figures 1-6 The utility model discloses a telescopic conductor, including outer conductor 1 and the inner conductor 2 of sliding connection in outer conductor 1, be equipped with with outer conductor 1 connection's spring contact finger 3 on inner conductor 2, still be connected with the guide rod 5 in outer conductor 1 on inner conductor 2, still be connected with the shield 6 of preventing the sliding of inner conductor 2 on outer conductor 1.

[0032] The inner cavity of outer conductor 1 is also provided with an annular step 4, which extends obliquely from outside to inside, the surface of step 4 is an annular taper, the inner diameter of the taper gradually decreases from outside to inside, and the inclination angle of step 4 is 5-10°.

[0033] The inner conductor 2 is provided with an annular protrusion on the end face inside the outer conductor 1, the outer diameter of the protrusion is greater than the maximum inner diameter of the step 4, and the outer diameter of the guide rod 5 is less than the minimum inner diameter of the step 4.

[0034] The guide rod 5 is threadedly connected with the inner conductor 2 and coaxially arranged with the inner conductor 2, and the outer diameter of the guide rod 5 is greater than the outer diameter of the inner conductor 2.

[0035] The inner conductor 2 is located in the outer conductor 1 and one end is connected with the limiting connector 7 connected with the electric connection 10, the limiting connector 7 includes coaxially arranged and the outer diameter of the first ring segment 71, the second ring segment 72, the third ring segment 73, the third ring segment 73 is connected with the inner conductor 2, the electric connection 10 is elastically connected with the annular contact ring 9, the contact ring includes a plurality of circumferentially arranged elastic contact pieces, the elastic contact piece is prior art, the inner diameter of the contact ring 9 is matched with the outer diameter of the second ring segment 72, the end face of the contact ring 9 close to the outer conductor 1 is the guide surface for guiding the insertion of the first ring segment 71.

[0036] The second ring segment 72 is provided with the lead-out ring 8 which is axially slidably connected, the material of the lead-out ring is polytetrafluoroethylene.

[0037] The lead-out ring 8 is conical, and the small-diameter end of the lead-out ring 8 is located between the large-diameter end and the third ring segment 73, the small-diameter end of the lead-out ring 8 is matched with the outer diameter of the second ring segment 72, and the diameter of the large-diameter end of the lead-out ring 8 is matched with the diameter of the first ring segment 71.

[0038] The electric connection 10 is further provided with the guide column 11 which is inserted into the first ring segment 71.

[0039] The application of the telescopic conductor in the GIS device. According to the actual demand, one or two is connected on the outer conductor 1, when the inner conductor 2 is provided with two, the two inner conductors 2 are symmetrically arranged.

[0040] A method for using the telescopic conductor, comprising the following steps:

[0041] In the GIS device, after the interval bus cylinder 12 is docked, the conductor is placed in the bus cylinder 12, according to the need, one or two inner conductors 2 are arranged in the outer conductor 1, that is, the telescopic extension of one end or both ends of the outer conductor 1 is realized, if one inner conductor 2 is selected, the other end of the outer conductor 1 adopts a conventional fixed connector, according to the demand, one or two inner conductors 2 are selected;

[0042] Then the shielding cover 6 is sleeved on the inner conductor 2, and the limiting connector 7 is threadedly connected on the inner conductor 2, then the inner conductor 2 is connected on the outer conductor 1, the guide rod 5 and the spring contact finger 3 are inserted into the outer conductor 1, the guide rod 5 passes through the step 4, and the protrusion is limited by the step 4 and cannot pass through the step 4, then the shielding cover 6 is threadedly connected on the outer conductor 1, thereby limiting the inner conductor 2 and playing a shielding role;

[0043] Then the bus barrel 12 butt joint is completed, personnel drills into the bus barrel 12 or from the bus barrel 12 pulls the mouth installation outer conductor 1, if there is conventional fixed joint, first installs conventional joint, then the limiting joint 7 is screwed on the spring contact finger 3, then pushes the limiting joint 7 and moves to the outer conductor 1, because the limiting action of the step 4, therefore will not make the inner conductor 2 completely enter to the outer conductor 1, simultaneously the inner conductor 2 overcomes the friction of the shield 6 and slides relative to the shield 6;

[0044] When the first ring segment 71 is coaxially arranged with the contact seat, the drive limiting joint 7 is inserted into the contact seat, the first ring segment 71, the extruded contact piece ring 9 is entered into the electric connection 10, and one end of the contact piece ring 9 is abutted to the second ring segment 72, and the end surface of the contact piece ring 9 is in contact connection with the stepped surface formed between the first ring segment 71 and the second ring segment 72, at this time, the retreat guide ring 8 is located outside the contact piece ring 9, so that the connection of the conductor is realized, compared with the conventional way of butt joint of several bus barrels 12, the several bus barrels 12 are butt joint together with the internal conductor, so that the coaxiality of the bus barrel 12 and the coaxiality of the internal conductor need to be ensured at the same time, compared with the operation, through the arrangement of the inner conductor 2 and the outer conductor 1, the installation of the internal conductor is carried out after the installation of the bus barrel 12 is completed, so that the installation operation is facilitated.

[0045] When the limiting joint 7 needs to be taken out from the electric connection 10, the limiting joint 7 is continuously moved to the spring contact finger 3, the retreat guide ring 8 is moved to the inside of the electric connection 10 under the guidance of the guide surface, that is, at this time, the retreat guide ring 8 and the first ring segment 71 are located on the same side, then the inner conductor 2 is moved to the outer conductor 1, that is, the first ring segment 71 is moved to the contact piece ring 9, the contact piece ring 9 pushes the retreat guide ring 8 and abuts to the first ring segment 71, under the guidance of the circumferential surface of the retreat guide ring 8, the opening of the contact ring piece is increased, and the contact piece ring 9 is in contact with the circumferential surface of the first ring segment 71, so that the first ring segment 71 is separated from the electric connection 10.

[0046] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model, the utility model is described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A scalable conductor, characterized by: The utility model provides a connector, which comprises an outer conductor (1) and an inner conductor (2) slidingly connected in the outer conductor (1), wherein the inner conductor (2) is provided with spring contact fingers (3) connected with the outer conductor (1), the inner conductor (2) is further connected with a guide rod (5) located in the outer conductor (1), and the outer conductor (1) is further connected with a shielding cover (6) for preventing the inner conductor (2) from sliding.

2. The scalable conductor of claim 1, wherein: An annular step (4) is further arranged in the inner cavity of the outer conductor (1), the step (4) extends obliquely from outside to inside, the inner conductor (2) is provided with an annular protrusion on the end face located inside the outer conductor (1), the outer diameter of the protrusion is greater than the maximum inner diameter of the step (4), and the outer diameter of the guide rod (5) is less than the minimum inner diameter of the step (4).

3. The telescoping conductor of claim 2, wherein: The guide rod (5) is threadedly connected with the inner conductor (2) and coaxially arranged with the inner conductor (2), and the outer diameter of the guide rod (5) is greater than the outer diameter of the inner conductor (2).

4. The telescoping conductor of claim 2, wherein: The inclination angle of the step (4) is 5-10°.

5. The scalable conductor of claim 3 or 4, wherein: The end of the inner conductor (2) located outside the outer conductor (1) is connected with a limiting connector (7) connected with an electric joint (10), the limiting connector (7) comprises first, second and third ring segments (71, 72 and 73) coaxially arranged and sequentially decreasing in outer diameter, the third ring segment (73) is connected with the inner conductor (2), and the electric joint (10) is elastically connected with an annular contact ring (9), the inner diameter of the contact ring (9) is matched with the second ring segment (72), and the end face of the contact ring (9) close to the outer conductor (1) is a guide surface for guiding the first ring segment (71) to be inserted.

6. The telescoping conductor of claim 5, wherein: The second ring segment (72) is provided with a guide-out ring (8) slidingly connected along the axial direction of the second ring segment (72), the guide-out ring (8) is conical, the small-diameter end of the guide-out ring (8) is located between the large-diameter end and the third ring segment (73), the small-diameter end of the guide-out ring (8) is matched with the outer diameter of the second ring segment (72), and the diameter of the large-diameter end of the guide-out ring (8) is matched with the diameter of the first ring segment (71).

7. The scalable conductor of claim 6, wherein: The electric joint (10) is further provided with a guide column (11) inserted into the first ring segment (71).

8. The retractable conductor of claim 1, wherein: The inner conductor (2) is provided with two inner conductors (2) arranged symmetrically.

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