CN214314445U - Bus duct insulation medium plate with large creepage distance - Google Patents

Abstract

The utility model discloses a big creep distance insulation medium plate of bus duct has the upper and lower surface, and the middle part on every surface of its characterized in that is equipped with the locating surface, be equipped with the mounting hole that thickness direction link up on the locating surface, the locating surface be equipped with extension inclined plane, transition face and direction inclined plane all around in proper order. The utility model discloses the design of upper and lower surface has direction inclined plane and extension inclined plane to increase creepage distance between looks and the looks. The creepage distance between the phases can reach more than 55mm, and when the bus duct runs in a condensation environment generated by humid air, the creepage distance of the bus duct insulation middle plate is large, so that interphase short circuit is avoided, and the bus duct can still run normally. And simultaneously, the utility model discloses also can practice thrift the part material to reduce manufacturing cost.

Description

Bus duct insulation medium plate with large creepage distance

Technical Field

The utility model belongs to the technical field of the distribution equipment technique and specifically relates to a bus duct joint connection is with insulating medium plate and specifically relates to spare part of bus duct.

Background

In a high-rise building power supply system, a bus duct system has the characteristics of large current-carrying capacity, flexible tapping, attractive appearance and the like and is widely used. The bus duct is arranged in a vertical shaft of a high-rise building, the space of the vertical shaft is narrow and closed, air is not easy to flow, the air in the vertical shaft is relatively humid in coastal areas or southern spring seasons, and the condensation phenomenon is easily generated on the shell of the bus duct in the vertical shaft in the operation process of the bus duct. For the bus duct with the protection level of the shell below IP54, the waterproof capacity of the bus duct shell is poor, and condensation flows into the interior of a bus duct joint along the bus duct shell along with the continuous accumulation of condensation of the bus duct shell. The creepage distance of the insulation middle plate between the conductor phase and the phase in the joint of the common bus duct is smaller, and the interphase short circuit is easy to generate, thereby causing economic loss. The conventional middle insulation plate for bus duct junction is composed of an upper surface 28, a positioning surface 27, a connecting hole 26, a mounting boss 25, left and right guide slopes 31 and 29, front and rear guide slopes 30 and 24, and a side surface 32, as shown in fig. 1. Because the length sizes of the left and right guide inclined planes and the front and back guide inclined planes are smaller, after the two sections of bus duct joints are connected, the creepage distance between conductor phases is smaller, and the bus duct running in an environment where condensation is generated due to humid air is easy to generate the interphase short circuit phenomenon, thereby causing economic loss.

Disclosure of Invention

The to-be-solved of the utility model is the above-mentioned technical problem that prior art exists, aim at providing a big creep distance insulation medium plate of bus duct.

In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a big creep distance insulation medium plate of bus duct, has upper and lower surface, and the middle part on every surface of its characterized in that is equipped with the locating surface, be equipped with the mounting hole that thickness direction link up on the locating surface, the locating surface be equipped with extension inclined plane, transition face and direction inclined plane around in proper order.

The utility model discloses insulating medium plate of big creep distance, upper and lower surface design have direction inclined plane and extension inclined plane to increase creepage distance between looks and the increase looks. The creepage distance between the phases can reach more than 55mm, and when the bus duct runs in a condensation environment generated by humid air, the creepage distance of the bus duct insulation middle plate is large, so that interphase short circuit is avoided, and the bus duct can still run normally. And simultaneously, the utility model discloses also can practice thrift the part material to reduce manufacturing cost.

As an improvement of the utility model, the whole plate structure is symmetrical around and about to increase creepage distance between the phase and the phase.

As a further improvement of the utility model, the upper and lower surfaces are also of symmetrical structure to increase the creepage distance between the phase and the other phase.

As the utility model discloses a further improvement again, the mounting hole is equipped with the boss all around, and boss and locating surface transition department design are fluted for connect the stepping down of copper bar connecting hole burr all around, connect the conductor connection situation in order to improve the bus duct.

As a further improvement of the present invention, the mounting hole is a set. Preferably, the number of the mounting holes is two.

As a further improvement, the guide slope joint of the upper and lower surfaces is designed with a side transition to increase the mechanical strength of the insulation middle plate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a bus duct insulation middle plate in the prior art.

Fig. 2 is the utility model relates to an axonometric drawing of big creep distance insulation medium plate of bus duct.

Fig. 3 is the utility model relates to a structural schematic of bus duct insulation medium plate with large creepage distance.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view taken along line B-B of fig. 3.

Fig. 6 is a use state diagram of the present invention.

In the figure, 1 is a left bus duct, 2 is a flange screw, 3 is a phase conductor (comprising a phase conductor A, a phase conductor B, a phase conductor C and a middle line conductor N), 4 is an insulating side plate, 5 is an insulating screw, 6 is a joint copper bar, 7 is an insulating middle plate (a bus duct large-creepage distance insulating middle plate), 8 is a right bus duct, 9 is a rear guide inclined plane, 10 is a rear lengthened inclined plane, 11 is a groove, 12 is a boss, 13 is a mounting hole, 14 is a positioning plane, 15 is an upper surface, 16 is a right guide inclined plane, 17 is a transition plane, 18 is a right lengthened inclined plane, 19 is a front lengthened inclined plane, 20 is a front guide inclined plane, 21 is a left lengthened inclined plane, 22 is a left guide inclined plane, 23 is a side face, 24 is a rear guide inclined plane, 25 is a boss, 26 is a mounting hole, 27 is a positioning plane, 28 is an upper surface, 29 is a right guide inclined plane, 30 is a front guide inclined plane, 31 is a left guide inclined plane, a right guide inclined plane is a right guide inclined plane, a guide inclined plane is a guide inclined plane, a guide inclined plane, 32 is the side, 33 is the creepage distance.

Detailed Description

Fig. 1 is a prior art bus duct insulation middle plate, the defects of which have been described above and are not described again.

Referring to fig. 2 to 6, the utility model discloses a big creep distance insulation medium plate of bus duct is square structure, has upper and lower surface. The upper surface 15 is provided with a square positioning surface 14, and the periphery of the positioning surface 14 is sequentially provided with a lengthened inclined surface, a transition surface and a guide inclined surface.

Specifically, the periphery of the positioning surface 14 is connected to a left elongated inclined surface 21, a right elongated inclined surface 18, a front elongated inclined surface 19, and a rear elongated inclined surface 20, respectively. The end of each elongate ramp surface is connected to a transition surface 17. The periphery of the transition surface 17 is respectively connected with the left guide inclined surface 22, the right guide inclined surface 16, the front guide inclined surface 20 and the rear guide inclined surface 9. The junction of the guiding slopes of the upper and lower surfaces is provided with a side surface 23.

Big creep distance insulating medium plate be bilateral symmetry, front and back symmetry, longitudinal symmetry structure.

The positioning surface 14 is used for installing the connector copper bar 6, a group of installation holes 13 are designed on the positioning surface 14, and the installation holes 13 are used for fastening and connecting the insulating screw rods 5 when the bus duct is connected. A boss 12 is designed on the mounting hole 13, and a groove 11 is designed at the transition position of the boss 12 and the positioning surface 14 and is used for avoiding burrs around a connecting hole of the joint copper bar 6 so as to improve the connection condition of a joint conductor of the bus duct.

The lower surface also has a symmetrical configuration with the upper surface.

Further referring to fig. 6, a trial state diagram is shown in this embodiment. A set of phase conductor 3 in left side bus duct 1 and the right side bus duct 8 is connected through a set of joint copper bar 6, a set of insulating sideboard 4, a set of insulating medium plate 7, a set of insulating screw 5, and insulating sideboard 4 and insulating medium plate 7 are used for the interphase insulation, and insulating screw 5 is used for insulating and fastening.

The large-creepage-distance insulating middle plates 7 are respectively positioned between the phase conductors A, B, C, N of the group, A, B is taken as an example, the creepage distance 33 between the A, B phases is composed of thick lines of the insulating middle plates 7, the total length of the thick lines is creepage distance, the thick lines comprise lengthened inclined planes, transition planes and guide inclined planes on the upper surface and guide inclined planes, transition planes and lengthened inclined planes on the lower surface, and the creepage distance can reach more than 55 mm. When the bus duct operates in an environment where condensation is generated due to air humidity, the inter-phase short circuit is avoided due to the fact that the creepage distance of the bus duct insulation middle plate is large, and therefore the purpose that the bus duct can still operate normally is achieved.

On the other hand, because big creep distance insulating medium plate four sides are the inclined plane structure, at the operation in-process, fall to insulating medium plate surface as condensation drop of water, the drop of water is followed insulation board surface landing immediately to avoid insulating medium plate to absorb water and become damp and cause alternate short circuit.

The utility model relates to a bus duct is big creepage distance insulating medium plate, DMC material compression molding can be chooseed for use to the material, and this material has fine dielectric strength and mechanical strength, and compression molding back insulating medium plate surface is bright and clean, is applicable to bus duct articulate insulating support piece very much.

The utility model discloses a big creep distance insulating medium plate of bus duct, simple structure, the commonality is good, and the transmission of electricity of bus duct electric energy in the condensation environment is produced to mainly using the air humidity to improve electric wire netting electric energy quality, reduce the economic loss that non-outage caused in advance, be an economical and practical's product.

It should be understood that: the above embodiments are merely illustrative, not restrictive, of the present invention, and any inventions not exceeding the spirit of the present invention are all within the scope of the present invention.

Claims (10)

1. The utility model provides a big creep distance insulation medium plate of bus duct, has upper and lower surface, and the middle part on every surface of its characterized in that is equipped with the locating surface, be equipped with the mounting hole that thickness direction link up on the locating surface, the locating surface be equipped with extension inclined plane, transition face and direction inclined plane around in proper order.

2. The middle insulating plate for a bus duct with large creepage distance as in claim 1, wherein the upper and lower surface structures are symmetrical.

3. The bus duct large-creepage distance insulating middle plate as claimed in claim 1, wherein the whole plate structure is symmetrical front and back.

4. The bus duct large-creepage distance insulating middle plate as claimed in claim 1, wherein the whole plate structure is left-right symmetrical.

5. The bus duct large-creepage distance insulation middle plate as claimed in claim 1, wherein a boss is provided around the mounting hole.

6. The middle insulation plate for the bus duct with large creepage distance as in claim 5, wherein the boss is provided with a groove around.

7. A bus duct large-creepage distance insulation middle plate as claimed in any one of claims 1 to 6, characterized in that said mounting holes are a group.

8. The middle insulating plate for the bus duct with large creepage distance as claimed in claim 7, wherein there are two mounting holes.

9. The middle insulating plate for the bus duct with large creepage distance as in claim 1, wherein the connection of the guiding inclined planes of the upper surface and the lower surface is provided with a side surface.

10. The bus duct large-creepage distance insulation middle plate as claimed in claim 1, wherein the transition surface and the positioning surface are horizontally arranged.

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