CN215599298U - Bus connector test terminal - Google Patents

Abstract

The utility model discloses a bus connector test terminal, which belongs to the technical field of inflatable switch cabinets, and is used for being in adaptive connection with a side expanding bus coupling sleeve arranged on an inflatable switch cabinet, wherein a central conductor is poured in the side expanding bus coupling sleeve, and the test terminal comprises: the adaptive assembly is matched with the side expanding female coupling sleeve, and a guide rod body is movably sleeved in the adaptive assembly; the contact sleeve is movably nested in the adaptive assembly and deforms under the action of external force; the contact sleeve is sleeved outside the central conductor and moves relative to the guide rod body through the adaptive assembly to force the contact sleeve to deform and tightly hold the contact sleeve outside the central conductor, so that voltage is applied to the inflatable switch cabinet through the side expanding bus coupler sleeve, and the purpose of solving the problem of discharging of the side expanding bus coupler sleeve to the box body during pressurization is achieved.

Description

Bus connector test terminal

Technical Field

The utility model belongs to the technical field of inflatable switch cabinets, and particularly relates to a bus connector test terminal.

Background

Along with the higher and higher requirements of various industries on the reliability of power utilization, the use number of the inflatable switch cabinets, particularly the ring main units, is more and more. The ring main unit is a group of electric equipment which is used for installing transmission and distribution electric equipment in a metal or nonmetal main unit body or is made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

The main bus is connected between the cabinet bodies of the gas-filled cabinet or between different intervals by a bus connector, and the bus connector not only meets the insulation between the main bus and the cabinet bodies, but also plays a role in conducting voltage and current.

Meanwhile, when the inflatable switch cabinet leaves the factory, local discharge and power frequency withstand voltage of the cabinet body need to be detected, main elements of the inflatable switch cabinet are sealed inside the box body, and a proper place is not connected with high voltage, so that the local discharge and the power frequency withstand voltage of the cabinet body cannot be smoothly detected, and the factory quality of the inflatable switch cabinet cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above problems in the prior art, an object of the present invention is to provide a bus connector test terminal for applying a voltage to a gas-filled switchgear through a side expanded bus coupler, and simultaneously solving the problem of discharging the side expanded bus coupler to a box body during pressurization.

The technical scheme adopted by the utility model is as follows: the utility model provides a bus connector test terminal, this test terminal be used for with install the side on inflatable cubical switchboard expand female allies oneself with sleeve pipe looks adaptation connection, the side expands and has poured into a mould central conductor in the female allies oneself with the sheathed tube, this test terminal includes:

the adaptive assembly is matched with the side expanding female coupling sleeve, and a guide rod body is movably sleeved in the adaptive assembly;

the contact sleeve is movably nested in the adaptive assembly and deforms under the action of external force;

the contact sleeve is sleeved outside the central conductor and moves relative to the guide rod body through the adaptive assembly to force the contact sleeve to deform and tightly hold the outer part of the central conductor.

Further, the side expanding bus coupling sleeve comprises:

the sleeve comprises a sleeve body, wherein a sleeve cavity is arranged in the sleeve body;

locate the central conductor of bushing cavity, the one end of central conductor is that connecting portion and connecting portion expand the pouring of female allies oneself with the sleeve pipe as an organic whole with the side, and the other end is through necking down transitional coupling between bulb contact and the connecting portion for the bulb contact.

Further, the adaptation component comprises: the adapter and the insulating boot sleeve sleeved on the adapter form a sleeved hole together, and the guide rod body is movably sleeved in the sleeved hole.

Furthermore, the contact sleeve can be dismantled or fixedly connected with to the one end of the guide rod body, and the other end is equipped with high-voltage line connecting terminal and the guide rod body can be dismantled and be equipped with the spacer pin near this high-voltage line connecting terminal's tip.

Furthermore, one end of the adapter is provided with an assembly cavity matched with the side expansion female coupling sleeve, an inner cavity is formed in the assembly cavity, and the inner cavity is matched with the contact sleeve.

Further, the inner surfaces of the assembly cavity and the inner cavity are provided with semi-conducting layers.

Furthermore, the inner cavity is sleeved with a pressure ring matched with the inner cavity, and the pressure ring is sleeved outside the contact sleeve.

Furthermore, annular protruding steps are arranged on the surfaces of the contact sleeve and the inner ring of the pressure ring, and the contact sleeve is tightly held on the central conductor through the protruding steps of the contact sleeve.

Furthermore, the contact sleeve is made of elastic materials, and a plurality of notches are formed in the outer wall of the contact sleeve along the same circumferential direction.

Furthermore, a boss is arranged on the adapter, a through hole is arranged on the boss, and the boss is connected with a grounding wire through the boss; the insulating boot is conducted through the adapter and grounded.

The utility model has the beneficial effects that:

1. when the bus connector test terminal provided by the utility model is used, the adapter is arranged outside the side expanded female coupling sleeve, in the installation process of the adapter, an inner cavity of the adapter interacts with the pressing ring, the pressing ring presses the contact sleeve, when the pressing ring compresses the contact sleeve, the contact sleeve deforms and locks a necking part on the central conductor, and at the moment, the adapter is firmly connected with the side expanded female coupling sleeve without loosening; on the contrary, when the clamping ring left the contact ring, the contact cover can resume original state under the elastic action to make the adapter easily expand from the side and put aside on the female allies oneself with the sleeve pipe, with this, ensure that inflatable cubical switchboard can detect the partial discharge and the withstand voltage of power frequency of the cabinet body self smoothly when dispatching from the factory.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a bus connector test terminal provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of an adapter in a bus connector test terminal provided by the present invention;

FIG. 4 is a side schematic view of FIG. 3;

FIG. 5 is a schematic front view of a pressure ring in a bus connector test terminal provided by the present invention;

FIG. 6 is a schematic sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic front view of a contact sleeve in a bus connector test terminal provided by the present invention;

FIG. 8 is a schematic sectional view taken along line A-A of FIG. 7;

FIG. 9 is a schematic sectional view taken along line B-B of FIG. 7;

FIG. 10 is a schematic view of an assembly structure of a guide rod body in the bus connector test terminal provided by the present invention;

FIG. 11 is a schematic view of a guide body of the bus connector test terminal according to the present invention;

FIG. 12 is a schematic view of the overall structure of a side expanded female coupling sleeve;

the drawings are labeled as follows:

1-contact sleeve, 2-compression ring, 3-locking screw, 4-adapter, 5-guide rod body, 6-grounding wire, 7-insulating boot sleeve, 8-limiting pin, 9-high-voltage wire connecting terminal, 10-assembly cavity, 11-inner cavity, 12-boss, 13-raised step, 50-sleeve body, 51-central conductor, 511-ball head contact body and 112-necking part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 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 figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. 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 embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are used for clearly and completely describing the technical scheme in the embodiments of the utility model, and obviously, the described embodiments are a part of the embodiments of the utility model, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

When the inflatable switch cabinet leaves the factory, the inflatable switch cabinet needs to be tested for electrical properties such as partial discharge, power frequency withstand voltage, lightning impulse and the like. Specifically provide a bus connector test terminal in this embodiment, aim at realizing through this test terminal that the gas-filled cubical switchboard is when dispatching from the factory, can detect the partial discharge and the withstand voltage of power frequency of the cabinet body self smoothly.

This test terminal is used for expanding female allies oneself with sleeve pipe looks adaptation connection with the side of installing on inflatable cubical switchboard, as shown in fig. 12, the pouring has central conductor 51 in the female allies oneself with the sleeve pipe of side expanding, and the female allies oneself with the sleeve pipe of side expanding still includes: the central conductor 51 of pouring in sleeve pipe body 50 and the sleeve pipe body 50 is equipped with the sleeve pipe chamber in sleeve pipe body 50, and the inside central point in sleeve pipe chamber is provided with central conductor 51, central conductor 51's one end is that connecting portion and connecting portion expand the female sleeve pipe pouring as an organic whole with the side, and the other end is established to be located in the sleeve pipe intracavity and passes through throat 112 transitional coupling between bulb contact 511 and the connecting portion, and throat 112 is that a external diameter between bulb contact 511 and central conductor 51 are expanded female sleeve pipe cladding portion by the side is less than the region of bulb. The diameter of the constricted portion 112 should be smaller than the diameter of the ball contact 511, and the constricted portion 112 is designed to fit the contact sleeve 1 and to be able to lock on the central conductor 51.

For the test terminal part, as shown in fig. 1, the test terminal mainly comprises an adapter component, and the adapter component is matched with the side expanding female coupling sleeve. In practical application, as shown in fig. 1, the adaptation component includes: the adapter 4 and the insulating boot sleeve 7 sleeved on the adapter 4, through holes are respectively formed in the adapter 4 and the insulating boot sleeve 7, a sleeved hole is formed by the through holes in the adapter 4 and the insulating boot sleeve 7, the guide rod body 5 is movably sleeved in the sleeved hole, and the guide rod body 5 can move relative to the sleeved hole.

As shown in fig. 3 and 4, for the adaptor 4, an assembly cavity 10 adapted to the side expanded female coupling sleeve is formed at one end of the adaptor 4, an inner cavity 11 in a conical shape or a cylindrical shape is formed in the assembly cavity 10, the inner cavity 11 is adapted to the contact sleeve 1, when the guide rod body 5 moves relative to the sleeved hole, the contact sleeve 1 also moves relative to the inner cavity, and under the constraint of the inner cavity wall of the inner cavity, the contact sleeve 1 can be forced to deform, and the contact sleeve 1 can be forced to lock on the central conductor 51 by the deformation of the contact sleeve 1.

In order to further prevent air discharge, an assembly gap is left between the assembly cavity 10 and the side expansion female coupling sleeve, so that when the adapter 4 is installed on the side expansion female coupling sleeve, air in the cavity of the assembly cavity 10 of the side expansion female coupling sleeve can be discharged through the gap, and air discharge is further prevented.

In order to further shield the air discharge, a semi-conducting layer is provided on the inner surface of the assembly chamber 10 and the inner cavity 11, i.e. on the inner cavity surface of the adapter 4, under the action of which the air discharge can be effectively shielded.

In the insulating boot 7 portion, the insulating boot 7 is fitted over the adapter 4, and the insulating boot 7 is conducted through the adapter 4 and grounded, where the conduction is the ground conduction of the insulating boot 7. In practical application, the insulating boot sleeve 7 is of a hollow structure, the hollow part is matched with the outside of the adapter 4, the hollow part and the outside of the adapter 4 are in interference fit, the adapter 4 is assembled on the hollow part in the interference fit mode, certain holding force is formed, and under the effect of the holding force, creepage breakdown of a product in use can be avoided, the product is not easy to move, and the position is relatively fixed. A ground electrode is provided inside the hollow structure of the insulating boot 7 and conductively connected to a ground shield layer on the surface of the adapter 4, wherein the ground electrodes are symmetrically arranged inside the hollow structure and are made of a semiconductor material for the purpose of ground shielding and concentrating the shielded electric field.

As shown in fig. 2, one end of the guide rod body 5 is connected with a contact sleeve 1, the contact sleeve 1 is movably nested in an inner cavity 11 of the adapter assembly, and the contact sleeve 1 deforms under the action of external force; in practical application, the inner cavity 11 is sleeved with the pressure ring 2 matched with the inner cavity, the pressure ring 2 is sleeved outside the contact sleeve 1, the pressure ring 2 can be pressed on the contact sleeve 1 under the action of the inner cavity 11, meanwhile, the contact sleeve 1 is enabled to deform, and the contact sleeve 1 can be tightly held on the central conductor 51 under the deformation of the contact sleeve 1. As shown in fig. 10 and 11, in practical applications, the contact sleeve 1 is detachably or fixedly connected to one end of the guide rod body 5, preferably, the contact sleeve 1 can be mounted on one end of the guide rod body 5 by using the locking screw 3, the other end of the guide rod body is provided with the high-voltage wire connecting terminal 9, the high-voltage wire connecting terminal 9 is connected and conducted with a terminal of a high-voltage wire, the guide rod body 5 is detachably mounted with the limit pin 8 at an end close to the high-voltage wire connecting terminal 9, and the limit pin 8 is used for positioning the whole adapter 4. The function of this spacer pin 8 lies in: after the test terminal is connected to the lateral expanding female coupling sleeve, the insulating shoe sleeve 7 and the adapter 4 are pushed to reach proper positions, at the moment, the contact sleeve 1 and the central conductor 51 are locked, the limiting pin 8 is inserted into the guide rod body 5, relative displacement cannot be generated between the guide rod body 5 and the insulating shoe sleeve 7 and the adapter 4 under the action of the limiting pin 8, and therefore the contact sleeve 1 can be tightly held on the central conductor 51 all the time, and the phenomenon of looseness cannot occur.

As shown in fig. 7, 8 and 9, the contact sleeve 1 is designed as follows: establish contact cover 1 to be coniform or cylindric, and contact cover 1 adopts elastic material to make, a plurality of notches have been seted up along same circumferencial direction to the outer wall of contact cover 1, under the effect of each notch, be favorable to contact cover 1 to produce deformation under the adding of external effort, simultaneously, because contact cover 1 adopts elastic material to make again, it is after removing external force, initial state can be resumeed again to contact cover 1 to realize that this test terminal can break away from the side smoothly and expand female union coupling pipe. In this embodiment, when the adapter 4 is installed, when an external force compresses the contact, the contact sleeve 1 deforms, and the protruding step 13 of the contact sleeve 1 is locked on the necking part 112, so as to ensure that the adapter 4 does not fall off.

For further promoting the assembly firmness of this contact sleeve 1 on central conductor 51, be equipped with the protruding step 13 of annular form on the inner circle surface of contact sleeve 1, and hold tightly in the necking portion 112 of central conductor 51 through the protruding step 13 of contact sleeve 1, when contact sleeve 1 received external effort, the opening of contact sleeve 1 then can the internal contraction, after the internal contraction of contact sleeve 1, the protruding step 13 of contact sleeve 1 can lock in necking portion 112 of central conductor 51, at this moment, the assembly between experimental terminal and the side expansion union coupling pipe is firm, when carrying out partial discharge and power frequency withstand voltage test to inflatable cubical switchboard, the condition that becomes flexible and even drop can not appear.

In order to further raise the pressing force of the pressing ring 2 on the contact sleeve 1, as shown in fig. 5 and 6, a ring-shaped protruding step 13 is provided on the inner ring surface of the pressing ring 2, and the pressing ring is held tightly against the constricted portion 112 of the center conductor 51 by the protruding step 13 of the pressing ring 2. Receive external effect at clamping ring 2 down, protruding step 13 on the clamping ring 2 can effectively provide the oppression power to contact sleeve 1, and contact sleeve 1 then can produce deformation under the effect of oppression power. When the adapter 4 is installed on the side expanding female coupling sleeve, the convex step 13 on the pressing ring 2 can compress the contact sleeve 1, and further the contact sleeve 1 is promoted to deform.

A boss 12 is arranged on the adapter 4, a through hole is arranged on the boss 12, and the boss 12 is connected with a grounding wire 6; the insulating boot 7 is conducted and grounded through the adapter 4, the grounding shielding layer made of semiconductor materials is attached to the outer surface of the adapter 4, and after the grounding wire 6 is grounded, the adapter 4 and the grounding shielding layer of the insulating boot 7 can be grounded and connected, so that the fact that external interference signals do not affect the test is guaranteed.

Based on above-mentioned bus connector test terminal, its theory of operation as follows:

with adapter 4 and side expand the assembly of uniting the sleeve pipe to aiming at, because there is the clearance between the side expands the box uniting the sleeve pipe and the adapter 4, when installing adapter 4 on the side expands the box uniting the sleeve pipe, the air can be got rid of through the clearance in the side expands the box uniting the sheathed tube cavity of box uniting, and then prevents that the air from discharging.

At this time, the contact sleeve 1 is already sleeved outside the ball contact body 511 of the central conductor 51, the inner cavity 11 inside the adapter 4 continuously presses the press ring 2 by pushing the insulating shoe sleeve 7 and the adapter 4 to displace to a preset position under the condition that the adapter 4 and the guide rod body 5 move relatively, the press ring 2 transmits pressing force to contact too much, the contact sleeve 1 can force the contact sleeve 1 to deform under the action of external pressing force, and the whole contact sleeve 1 can be locked outside the central conductor 51 at this time because the convex step 13 of the contact sleeve 1 can be tightly held on the necking part 112 of the central conductor 51 under the deformation action;

and then the limiting pin 8 is inserted into the pin hole on the guide rod body 5, the position of the insulating boot sleeve 7 is limited (namely the adapter is positioned) through the limiting pin 8, so that the adapter 4 is prevented from moving relative to the guide rod body 5, the whole test terminal is firmly connected to the side expansion female coupling sleeve, and the local discharge and power frequency withstand voltage of the cabinet body can be smoothly detected.

Because the contact sleeve 1 is made of elastic material, when the press ring 2 compresses the contact sleeve 1, the contact sleeve 1 can deform and lock on the necking part 112 of the central conductor 51; when the press ring 2 leaves the contact sleeve 1, the contact sleeve 1 can restore to the original state, so that the adapter 4 can be easily removed from the side expanding female coupling sleeve and separated.

The utility model is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (10)

1. The utility model provides a bus connector test terminal, this test terminal be used for with install the side on inflatable cubical switchboard expand female allies oneself with sleeve pipe looks adaptation connection, the side expands and has central conductor in the female allies oneself with the sheathed tube pouring of pouring, its characterized in that, this test terminal includes:

the adaptive assembly is matched with the side expanding female coupling sleeve, and a guide rod body is movably sleeved in the adaptive assembly;

the contact sleeve is movably nested in the adaptive assembly and deforms under the action of external force;

the contact sleeve is sleeved outside the central conductor and moves relative to the guide rod body through the adaptive assembly to force the contact sleeve to deform and tightly hold the outer part of the central conductor.

2. The busbar connector testing terminal according to claim 1, wherein the side expanded female coupling sleeve comprises:

the sleeve comprises a sleeve body, wherein a sleeve cavity is arranged in the sleeve body;

locate the central conductor of bushing cavity, the one end of central conductor is that connecting portion and connecting portion expand the pouring of female allies oneself with the sleeve pipe as an organic whole with the side, and the other end is through necking down transitional coupling between bulb contact and the connecting portion for the bulb contact.

3. The busbar connector test terminal according to claim 1, wherein the adapter assembly comprises: the adapter and the insulating boot sleeve sleeved on the adapter form a sleeved hole together, and the guide rod body is movably sleeved in the sleeved hole.

4. The busbar connector test terminal according to claim 1, wherein one end of the guide rod body is detachably or fixedly connected with the contact sleeve, the other end of the guide rod body is provided with a high-voltage wire connecting terminal, and the guide rod body is detachably provided with a limit pin at the end close to the high-voltage wire connecting terminal.

5. The busbar connector testing terminal according to claim 3, wherein one end of the adapter defines a mounting cavity adapted to the side expanded female coupling sleeve, an inner cavity is defined in the mounting cavity, and the inner cavity is adapted to the contact sleeve.

6. The busbar connector test terminal according to claim 5, wherein a semi-conductive layer is disposed on an inner surface of each of said mounting cavity and said inner cavity.

7. The busbar connector test terminal according to claim 5, wherein the inner cavity is sleeved with a pressing ring matched with the inner cavity, and the pressing ring is sleeved outside the contact sleeve.

8. The busbar connector test terminal according to claim 7, wherein the contact sleeve and the inner circumferential surface of the pressure ring are provided with annular raised steps and are held tightly to the center conductor by the raised steps of the contact sleeve.

9. The busbar connector test terminal according to claim 4, wherein the contact sleeve is made of an elastic material, and a plurality of notches are formed in the outer wall of the contact sleeve along the same circumferential direction.

10. The busbar connector test terminal according to claim 3, wherein a boss is provided on the adapter, a through hole is provided on the boss, and a ground wire is connected to the boss; the insulating boot is conducted through the adapter and grounded.

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