CN211238523U - Hardware fitting for high-voltage filtering power capacitor wiring terminal - Google Patents

Abstract

The utility model discloses a gold utensil for high-pressure filter power capacitor terminal, include with fixed haversian clamp and the cable of condenser terminal, still include the adapter sleeve, the adapter sleeve includes by the connective bar of haversian clamp centre gripping and cup joints and colds pressing the sleeve pipe on the cable core, sleeve pipe one end is the open end, and the sleeve pipe other end is the cecum, the one end of connective bar is fixed with the sheathed tube cecum, and connective bar and sheathed tube axis are located same straight line, sheathed tube internal diameter and cable core diameter phase-match. The utility model discloses can reduce and have great contact resistance between sinle silk and the haversian fastener, reduce the calorific capacity of haversian fastener, prolong the life of haversian fastener.

Description

Hardware fitting for high-voltage filtering power capacitor wiring terminal

Technical Field

The utility model relates to an electric power connecting tool field particularly, relates to a gold utensil for high-voltage filter power capacitor terminal.

Background

At present, an alternating current filter capacitor bank of a high-voltage direct current transmission system generally adopts a copper nickel plating Harvard wire clamp and a tin plating multi-strand stranded copper wire as a connecting hardware fitting. However, the cable core is formed by twisting a plurality of thin round copper wires, when the wire core is clamped by the Harvard wire clamp, the Harvard wire clamp is actually in contact with part of the thin round copper wires, so that the wire core is in line contact with the Harvard wire clamp, the contact area is small, large contact resistance exists between the wire core and the Harvard wire clamp, the heat productivity of the line Harvard wire clamp is increased, and the service life of the Harvard wire clamp is shortened. Moreover, because area of contact is less between sinle silk and the haversian fastener, the condenser in use itself can produce the vibration again, under the circumstances of vibration, can produce the mutual displacement between sinle silk and the haversian fastener, and then makes the contact surface wearing and tearing, leads to the haversian fastener life to shorten.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gold utensil for high-pressure filter power capacitor terminal, it can reduce to have great contact resistance between sinle silk and the hafu fastener, reduces the calorific capacity of hafu fastener, prolongs the life of hafu fastener.

The embodiment of the utility model discloses a realize through following technical scheme:

the utility model provides a gold utensil for high-voltage filter power capacitor terminal, includes the Harvard fastener and the cable fixed with the capacitor terminal, still includes the adapter sleeve, the adapter sleeve includes by the connective bar of Harvard fastener centre gripping and cup joints and colds presses the sleeve pipe on the cable core, sleeve pipe one end is the open end, and the sleeve pipe other end is the cecum, the one end and the sheathed tube cecum of connective bar are fixed, and connective bar and sheathed tube axis are located same straight line, sheathed tube internal diameter and cable core diameter phase-match.

In one embodiment, the sleeve is inclined in use with the open end of the sleeve at the lower end and the connector rod at the upper end.

In one embodiment, the connecting rod is a copper connecting rod, and the sleeve is a copper sleeve.

In one embodiment, one end of the connecting rod is welded with the blind end of the sleeve.

In one embodiment, the connecting rod is integrally formed with the sleeve.

In one embodiment, the half clamp comprises a conductive bolt connected with the binding post, a nut in threaded connection with the conductive bolt, an upper clamp and a lower clamp for clamping the connecting rod, wherein the conductive bolt vertically penetrates through the upper clamp and the lower clamp, and the upper clamp and the lower clamp are located between the head of the conductive bolt and the nut.

In one embodiment, an upper arc-shaped groove matched with the shape of the connecting rod is formed in one side of the upper wire clamp surface and the lower wire clamp, and a lower arc-shaped groove which corresponds to the semicircular groove in position and has the same radius is formed in the lower wire clamp.

In one embodiment, the number of the upper arc-shaped grooves is two, and the number of the lower arc-shaped grooves is equal to that of the arc-shaped grooves.

In one embodiment, the conductive bolt is sleeved with a washer for loosening

The utility model discloses technical scheme has following advantage and beneficial effect at least:

1. the embodiment of the utility model provides an adopt the adapter sleeve, make and be face contact between cable core and the adapter sleeve, make also for face contact between adapter sleeve and the haversian fastener, under the prerequisite of guaranteeing joint strength, reduced contact resistance between haversian fastener and the cable core, just also reduced calorific capacity of haversian fastener, because the greater is calorific capacity in use to the haversian fastener, the life of haversian fastener just is shorter more, so also prolonged the life of haversian fastener.

2. The embodiment of the utility model provides an adopt the adapter sleeve, the appearance rule of connective bar in the adapter sleeve, be the face contact between connective bar and the haversian clamp moreover, area of contact is great, and under the same clamping-force effect, frictional force between connective bar and the haversian clamp is bigger, and in the vibration, the connective bar is more firm with being connected of haversian clamp, and relative movement can not take place for the two, and then has avoided the wearing and tearing of haversian clamp, has prolonged the life of haversian clamp.

3. The embodiment of the utility model provides a set up the connective bar slope, make the rainwater flow downwards along the sleeve pipe outside of connective bar, and can not flow in the sleeve pipe, just also avoided sleeve pipe ponding, realized reducing the electrochemical corrosion between cable core and the sleeve pipe, avoid the contact resistance increase between sleeve pipe and the cable core, guarantee that calorific capacity of adapter sleeve is in reasonable within range, prolong the life of adapter sleeve. In addition, compared with the prior art, adopt the adapter sleeve to make the adapter sleeve slope set up, also avoided the contact site of cable core and haversian fastener to produce electrochemical corrosion because of ponding, prolonged the life of haversian fastener.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a connecting sleeve according to an embodiment of the present invention;

figure 2 is the utility model discloses a structural schematic of haversian clamp.

Icon:

1-a half wire clamp, 11-a conductive bolt, 12-a nut, 13-a washer, 14-an upper wire clamp, 141-an upper arc-shaped groove, 15-a lower wire clamp, 151-a lower arc-shaped groove, 2-a connecting sleeve, 21-a connecting rod and 22-a sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 2, the fitting for the high-voltage filtering power capacitor terminal comprises a huff clamp 1 fixed with the capacitor terminal, a cable and a connecting sleeve 2, wherein the connecting sleeve 2 comprises a connecting rod 21 clamped by the huff clamp 1 and a sleeve 22 sleeved and cold-pressed on a cable core, one end of the sleeve 22 is an open end, the other end of the sleeve 22 is a blind end, one end of the connecting rod 21 is fixed with the blind end of the sleeve 22, the axes of the connecting rod 21 and the sleeve 22 are positioned on the same straight line, and the inner diameter of the sleeve 22 is matched with the diameter of the cable core.

In order to reduce the contact resistance between the wire core and the Harvard wire clamp, reduce the calorific capacity of the Harvard wire clamp, prolong the service life of the Harvard wire clamp, the technical scheme adopts the connecting sleeve 2 to connect the wire core and the Harvard wire clamp, one end of the connecting sleeve 2 is the solid connecting rod 21, one end of the connecting sleeve 2 is the hollow sleeve 22, when in use, the cable core is inserted into the sleeve 22, the cold pressing technology is utilized, external force is applied to the outside of the sleeve 22 to extrude the sleeve 22 and enable the sleeve 22 to shrink along the circumferential direction, and because the sleeve 22 generates plastic deformation in the extruded process, the inner wall of the sleeve 22 is matched with the appearance of the cable core, and the surface contact between the sleeve 22 and the. The connecting rod 21 is clamped in the Harvard wire clamp 1, and the Harvard wire clamp 1 is provided with an arc-shaped groove for clamping a cable core, so that the connecting rod 21 is placed in the arc-shaped groove, and the diameter of the connecting rod 21 is controlled to ensure that the arc-shaped groove is in surface contact with the connecting rod 21. Compare with the direct centre gripping cable core of haversian fastener among the prior art, adopt adapter sleeve 2, make be face contact between cable core and the adapter sleeve 2, make also be face contact between adapter sleeve 2 and the haversian fastener 1, under the prerequisite of guaranteeing joint strength, contact resistance between haversian fastener 1 and the cable core has been reduced, just also reduce calorific capacity of haversian fastener 1, because the greater in use calorific capacity of haversian fastener 1, the life of haversian fastener 1 is just short more, so also prolonged the life of haversian fastener.

In addition, this technical scheme adopts adapter sleeve 2 to have also avoided the problem of haversian clamp 1 and cable core contact surface wearing and tearing. Because the cable core is twisted by many thin round copper wires and forms, when the core is cliied to the haversian fastener, the haversian fastener actually contacts with some thin round copper wires, therefore the contact between core and the haversian fastener is actually line contact, and area of contact is less. And the connective bar 21 in the adapter sleeve 2 is cylindric, compare with the anomalous appearance of cable core, the connective bar 21 appearance is more regular, and be the face contact between connective bar 21 and the haversian clamp 1, area of contact is great, under the clamping-force effect the same, frictional force between connective bar 21 and the haversian clamp 1 is bigger, so in the vibration, connective bar 21 is more firm with being connected of haversian clamp 1, the two relative movement can not take place, and then avoided the wearing and tearing of haversian clamp 1, the life of haversian clamp has been prolonged.

In one embodiment, the sleeve 22 is disposed at an angle when in use, with the open end of the sleeve 22 at the lower end and the connecting rod 21 at the upper end.

Among the prior art, the cable core is formed by many thin round copper wires hank system, the direct centre gripping of harbourn clamp 1 is back on the cable core, there is the clearance inside the cable core promptly between the thin round copper wire, and the harbourn clamp directly exposes in the environment, when rainy day, the inside meeting ponding of cable core, make the contact site of cable core and harbourn clamp 1 be in humid state all the time, under the state of circular telegram, the contact site that leads to cable core and harbourn clamp produces electrochemical corrosion, contact resistance between harbourn clamp 1 and the cable core has been increased, the calorific capacity increase of harbourn clamp 1, and then the life of harbourn clamp 1 has been shortened.

Adopt adapter sleeve 2 back, because sleeve 22 also has the open end, in order to avoid reducing the electrochemical corrosion between cable core and the sleeve 22, prolong the life of haversian clamp 1 and adapter sleeve 2, this technical scheme sets up adapter sleeve 2 slope when using, let sleeve 22 open end down, the rainwater flows downwards along sleeve 22 outside like this, and can not flow in sleeve 22, sleeve 22 ponding has just also been avoided, electrochemical corrosion between reduction cable core and the sleeve 22 has been realized, avoid the contact resistance increase between sleeve 22 and the cable core, guarantee that calorific capacity of adapter sleeve 2 is in reasonable within range, prolong adapter sleeve 2's life. In addition, compare with prior art, adopt adapter sleeve 2 to make adapter sleeve 2 slope setting, also avoided the contact site of cable core and haversian fastener 1 to produce electrochemical corrosion because of ponding, prolonged the life of haversian fastener 1.

In one embodiment, the connecting rod 21 is a copper connecting rod, and the sleeve 22 is a copper sleeve.

Because the connecting sleeve 2 is connected between the cable core and the Harvard clamp 1, current flows through the connecting sleeve 2 when in use, the cable core is a copper core, and in order to ensure that the connecting sleeve 2 has good conductivity, the connecting sleeve 2 made of copper is adopted in the technical scheme because the copper has good conductivity.

In one embodiment, one end of the connecting rod 21 is welded to the blind end of the sleeve 22.

In one embodiment, the connecting rod 21 is integrally formed with the sleeve 22.

In order to facilitate the production and processing of the connecting sleeve 2, the connecting rod 21 and the sleeve 22 may be integrally formed or may be welded.

In one embodiment, the haversian clamp 1 comprises a conductive bolt 11 connected with a binding post, a nut 12 in threaded connection with the conductive bolt 11, an upper clamp 14 and a lower clamp 15 for clamping a connecting rod 21, wherein the conductive bolt 11 vertically penetrates through the upper clamp 14 and the lower clamp 15, and the upper clamp 14 and the lower clamp 15 are located between the head of the conductive bolt 11 and the nut 12.

In order to clamp the connecting sleeve 2 by the Harvard clamp 1, the technical scheme adopts the Harvard clamp 1 consisting of a conductive bolt 11, a nut 12, an upper clamp 14 and a lower clamp 15, the conductive bolt 11 vertically penetrates through the upper clamp 14 and the lower clamp 15, then the nut 12 is installed on the conductive bolt 11, and the conductive bolt 11 is connected with a capacitor binding post. When the connecting sleeve 2 is used, the nut 12 is loosened, the connecting rod 21 is inserted between the upper clamp 14 and the lower clamp 15, the nut 12 is screwed, the nut 12 moves towards the head of the conducting bolt 11 to enable the upper clamp 14 and the lower clamp 15 to approach each other, and therefore the connecting sleeve 2 is clamped through the upper clamp 14 and the lower clamp 15.

In one embodiment, the upper clamp 14 is provided with an upper arc-shaped groove 141 which matches the shape of the connecting rod 21 on the side facing the lower clamp 15, and the lower clamp 15 is provided with a lower arc-shaped groove 151 which corresponds to the semi-circular groove 141 in position and has the same radius.

In order to realize surface contact between the haversian wire clamp 1 and the connecting rod 21, the technical scheme is that the upper wire clamp 14 is provided with an upper arc-shaped groove 141 matched with the appearance of the connecting rod 21, the lower wire clamp 15 is provided with a lower arc-shaped groove 151 matched with the appearance of the connecting rod 21, when the upper wire clamp 14 and the lower wire clamp 15 are installed, the opening of the upper arc-shaped groove 141 and the opening of the lower arc-shaped groove 151 are oppositely arranged, and the upper arc-shaped groove 141 and the lower arc-shaped groove 151 form a channel with an arc-shaped cross section. When the installation, the connective bar 21 inserts between the arc wall 141 and the lower arc wall 151, when last fastener 14 and lower fastener 15 are close to each other, go up arc wall 141, lower arc wall 151 and the laminating of connecting plate outer wall press from both sides tight connective bar 21, the face contact between 1 and connective bar 21 of haversian fastener has been realized, compare with the direct line contact of haversian fastener 1 and cable core among the prior art, contact resistance between 1 and connective bar 21 of haversian fastener, just also reduce calorific capacity of haversian fastener 1, the life of extension haversian fastener 1.

In one embodiment, two upper arc-shaped slots 141 are symmetrically arranged around the conductive bolt 11, and the number of the lower arc-shaped slots 151 is equal to that of the upper arc-shaped slots 141.

In one embodiment, the conductive bolt 11 is further sleeved with a washer 13 for loosening.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a gold utensil for high-voltage filter power capacitor terminal, includes and presss from both sides (1) and cable with the fixed haversian clamp (1) of capacitor terminal, its characterized in that: still include adapter sleeve (2), adapter sleeve (2) include by connecting rod (21) of haversian clamp (1) centre gripping and cup joint and coldly press sleeve pipe (22) on the cable core, sleeve pipe (22) one end is the open end, and the sleeve pipe (22) other end is the cecum, the one end of connecting rod (21) is fixed with the cecum of sleeve pipe (22), and the axis of connecting rod (21) and sleeve pipe (22) is located same straight line, the internal diameter and the cable core diameter phase-match of sleeve pipe (22).

2. The fitting for the high-voltage filter power capacitor terminal according to claim 1, characterized in that: the sleeve (22) is obliquely arranged when in use, the open end of the sleeve (22) is positioned at the low end, and the connecting rod (21) is positioned at the high end.

3. The fitting for the high-voltage filter power capacitor terminal according to claim 1, characterized in that: the connecting rod (21) is a copper connecting rod, and the sleeve (22) is a copper sleeve.

4. The fitting for the high-voltage filter power capacitor terminal according to claim 1, characterized in that: one end of the connecting rod (21) is welded with the blind end of the sleeve (22).

5. The fitting for the high-voltage filter power capacitor terminal according to claim 1, characterized in that: the connecting rod (21) and the sleeve (22) are integrally formed.

6. The fitting for the high-voltage filter power capacitor terminal according to claim 1, characterized in that: the half wire clamp (1) comprises a conductive bolt (11) connected with a binding post, a nut (12) in threaded connection with the conductive bolt (11), an upper wire clamp (14) and a lower wire clamp (15) which are used for clamping a connecting rod (21), wherein the conductive bolt (11) vertically penetrates through the upper wire clamp (14) and the lower wire clamp (15), and the upper wire clamp (14) and the lower wire clamp (15) are located between the head of the conductive bolt (11) and the nut (12).

7. The fitting for the high voltage filter power capacitor terminal of claim 6, wherein: the upper wire clamp (14) is provided with an upper arc-shaped groove (141) which is matched with the appearance of the connecting rod (21) and faces one side of the lower wire clamp (15), and the lower wire clamp (15) is provided with a lower arc-shaped groove (151) which corresponds to the upper arc-shaped groove (141) in position and has the same radius.

8. The fitting for high voltage filter power capacitor terminals of claim 7, wherein: the number of the upper arc-shaped grooves (141) is two, and the number of the lower arc-shaped grooves (151) is equal to that of the upper arc-shaped grooves (141).

9. The fitting for the high voltage filter power capacitor terminal of claim 6, wherein: the conductive bolt (11) is further sleeved with a gasket (13) for loosening.

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