CN215770801U - Outdoor mutual inductor secondary outlet pipe connecting piece - Google Patents

Abstract

The utility model belongs to the technical field of mutual inductor structures, and particularly relates to a secondary outlet pipe connecting piece for an outdoor mutual inductor. The connecting piece has long service life, is waterproof and corrosion-resistant, solves the problem of difficult process operation when field personnel install and maintain, greatly reduces the operation difficulty and the operation time, improves the field installation efficiency, and ensures the stability and the reliability of product operation.

Description

Outdoor mutual inductor secondary outlet pipe connecting piece

Technical Field

The utility model belongs to the technical field of mutual inductor structures, and particularly relates to a secondary outlet pipe connecting piece of an outdoor mutual inductor, which is suitable for preventing water and collision of a secondary connecting lead of the outdoor mutual inductor.

Background

The secondary connecting lead of the outdoor mutual inductor needs to be subjected to waterproof, anti-collision and other treatment, so that the secondary connecting lead needs to penetrate through the wire outlet pipe, one end of the secondary connecting lead is connected to the secondary wiring terminal of the mutual inductor, and the other end of the secondary connecting lead is connected to an instrument. Firstly, the mutual inductor is installed on a support which is 3-6 m far away from the ground outdoors on site, the support is supported by a metal rod or a cement rod, an outlet pipe is generally fixed on the circumference of the metal rod or the cement rod and then connected to a reserved wiring hole of a secondary junction box of the mutual inductor, but the outlet pipe and the secondary wiring hole are not concentric under many conditions, and the outlet pipe cannot directly extend into the secondary junction box, so that a section of the outlet pipe needs to be connected. The welding mode is frequently adopted on the spot, the size is not easy to guarantee during welding, repeated adjustment can be carried out on the spot, and the gaps during connection need to be blocked by fireproof mud, so that the installation process is relatively complex in operation, time-consuming and labor-consuming; and this kind of connected mode also need carry out the same operation when mutual-inductor later maintenance overhauls, and the maintenance project that requires relatively urgent to the power off time is unfavorable, causes the improper operation easily to influence system's safe operation.

Disclosure of Invention

The utility model solves the technical problem of providing the secondary outlet pipe connecting piece of the outdoor mutual inductor, which has flexible adjustment range, convenient operation and waterproof effect, and solves the problems of complex operation, time and labor waste and difficult later maintenance of field installation process.

The technical scheme adopted by the utility model is as follows: a secondary outlet pipe connecting piece of an outdoor mutual inductor is characterized in that one end of the connecting piece is connected with a secondary connecting terminal of the mutual inductor, the other end of the connecting piece is connected with an instrument or an instrument, a secondary lead of the mutual inductor penetrates through the inside of the connecting piece, the connecting piece comprises a corrugated pipe, an outer hexagonal crimping nut and a silica gel ring are sequentially sleeved at the upper end of the corrugated pipe, a spiral pressing ring is screwed to the upper end of the corrugated pipe to be fixed, the silica gel ring at the upper end of the corrugated pipe presses the outer edge of the spiral pressing ring, the outer hexagonal crimping nut at the upper end of the corrugated pipe presses the silica gel ring at the upper end of the corrugated pipe, an outer hexagonal upper end thread sleeve is in threaded connection with the outer hexagonal crimping nut, the outer hexagonal upper end thread sleeve is pressed at the upper end of the spiral pressing ring, the outer hexagonal crimping nut and the silica gel ring are sequentially sleeved at the lower end of the corrugated pipe to be fixed, the silica gel ring at the lower end of the corrugated pipe presses the outer edge of the spiral pressing ring, the outer hexagonal crimping nut at the lower end of the corrugated pipe compresses a silica gel ring at the lower end of the corrugated pipe, the outer hexagonal lower end thread sleeve is in threaded connection with the outer hexagonal crimping nut, the outer hexagonal lower end thread sleeve is pressed at the lower end of the spiral compression ring, and the upper end of the adapter is inserted into an inner hole of the outer hexagonal lower end thread sleeve and fixed.

Preferably, the corrugated pipe body is spiral, has elasticity, can stretch out and draw back and can change the direction, and the site operation of being convenient for can carry out the adjustment of direction and length angle according to the site conditions.

Preferably, outer hexagonal crimping nut machining dimension closely cooperates with the silica gel circle, and the silica gel circle has certain deformation volume, can effectively seal and prevent the water seepage.

Preferably, the spiral compression ring is a metal section and integrally formed through die stamping, the outer side of the circumference of one end of the ring body is provided with a flanging, the edge is smooth, no flash or burr can be tightly attached to the corrugated pipe and the silica gel ring, and the sealing effect is improved.

Preferably, outer hexagonal upper end thread bush structure cavity, double-end processing have the external screw thread, and outer hexagonal upper end thread bush links to each other with the screw hole of reserving in the mutual-inductor secondary terminal box, outer hexagonal lower extreme thread bush structure cavity, one end processing have the external screw thread, and the other end is circular to the three screw hole of equipartition on the circumference, the adapter passes through screw and outer hexagonal lower extreme thread bush fixed connection, the adapter lower extreme links to each other with the play spool, and the mutual-inductor secondary lead passes from the centre. The whole body forms a full-sealing structure after being connected, thereby playing the role of water resistance and corrosion resistance.

Preferably, the adapter is the loop configuration of plastics material, and the aperture cooperation of upper end external diameter and outer hexagonal lower extreme thread bush, lower extreme aperture have multiple diameter specification and the cooperation of being qualified for the next round of competitions external diameter according to the design requirement, have increased the commonality of connecting piece.

Preferably, the corrugated pipe, the outer hexagonal upper end thread sleeve, the spiral compression ring, the outer hexagonal crimping nut and the outer hexagonal lower end thread sleeve are made of 304 stainless steel, so that the service life is long, and the waterproof and anti-corrosion effects are achieved.

The utility model has the beneficial effects that: the utility model adopts a novel connecting structure, has long service life, is waterproof and corrosion-resistant, the upper end and the lower end are fixed by threads and jackscrews, and when in use, only two ends are connected to corresponding positions of the mutual inductor and the wire outlet pipe, thereby solving the technical operation difficulty when in field personnel install and maintain, greatly reducing the operation difficulty and the operation time, and through the application of the corrugated pipe, the field installation personnel can randomly adjust the position and the state of the corrugated pipe according to the requirements, greatly improving the field installation efficiency, ensuring the stability and the reliability of the product operation, and having strong popularization and application values.

Drawings

FIG. 1 is a schematic structural view of a secondary outlet pipe connecting piece of an outdoor mutual inductor;

FIG. 2 is a schematic view of the structure of an outer hexagonal upper end thread bush;

FIG. 3 is a schematic view of a spiral pressure ring structure;

FIG. 4 is a schematic structural view of an outer hexagonal crimp nut;

FIG. 5 is a schematic view of the structure of an outer hexagonal lower end thread bush;

figure 6 is a schematic view of an adapter structure;

FIG. 7 is a schematic view of a silica gel ring structure;

fig. 8 is a partially enlarged view of the upper end connection end of the bellows.

Reference numerals: 1-corrugated pipe, 2-outer hexagonal upper end thread bush, 3-spiral pressure ring, 4-outer hexagonal crimping nut, 5-outer hexagonal lower end thread bush, 6-adapter, 7-silica gel ring and 8-screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 and 8, the secondary outlet pipe connecting piece for the outdoor mutual inductor comprises an outer hexagonal upper end thread bush 2, a spiral pressure ring 3, an outer hexagonal crimping nut 4, a corrugated pipe 1, a silica gel ring 7, an outer hexagonal lower end thread bush 5 and an adapter 6. The body of the corrugated pipe 1 is spiral, has elasticity, can be stretched and bent to change the direction, is convenient for field operation, and can adjust the direction and the length angle according to the field condition.

As shown in fig. 2 and 5, outer hexagonal upper end thread bush 2 structure cavity, double-end processing has the external screw thread, outer hexagonal upper end thread bush 2 links to each other with the screw hole of reserving in the mutual-inductor secondary terminal box, outer hexagonal lower extreme thread bush 5 structure cavity, one end processing has the external screw thread, the other end is circular to the three screw hole of equipartition on the circumference, adapter 6 passes through screw 8 and 5 fixed connection of outer hexagonal lower extreme thread bush, 6 lower extremes of adapter link to each other with the play spool, mutual-inductor secondary lead passes from the centre. The whole body forms a full-sealing structure after being connected, thereby playing the role of water resistance and corrosion resistance.

As shown in fig. 3, the spiral pressure ring 3 is a metal section integrally formed by stamping through a die, the outer side of the circumference of one end of the ring body is provided with a flanging, the edge is smooth, no flash or burr can be tightly attached to the corrugated pipe 1 and the silica gel ring 7, and the sealing effect is improved.

As shown in fig. 4 and 7, the outer hexagonal crimping nut 4 is tightly matched with the silicone ring 7 in machining size, and the silicone ring 7 has a certain deformation amount, so that water leakage can be effectively prevented in a sealing manner.

As shown in fig. 6, the adapter 6 is of an annular structure made of plastic, the outer diameter of the upper end of the adapter is matched with the diameter of the outer hexagonal lower end threaded sleeve 5, the diameter of the lower end of the adapter is matched with the outer diameter of the outlet pipe according to various diameter specifications, and the universality of the connecting piece is improved.

Corrugated tube, outer hexagonal upper end thread bush, spiral clamping ring, outer hexagonal crimping nut, outer hexagonal lower extreme thread bush's material are 304 stainless steel in this embodiment, whole full seal structure, and protection level can reach IP 55. Long service life and waterproof and anticorrosive functions.

Outer hexagonal lower extreme thread bush with outer hexagonal crimping nut threaded connection, outer hexagonal lower extreme thread bush is pressed at spiral clamping ring lower extreme, and the upper end of adapter inserts the hole of outer hexagonal lower extreme thread bush is fixed.

Firstly, an outer hexagonal crimping nut 4 and a silica gel ring 7 are sequentially sleeved from the upper end of the corrugated pipe 1, and the spiral compression ring 3 is screwed to the upper end of the corrugated pipe 1 and is screwed and fixed. Silica gel circle 7 compresses tightly 3 outer edges of spiral clamping ring, and outer hexagonal crimping nut 4 compresses tightly silica gel circle 7, outer hexagonal upper end thread bush 2 and 4 threaded connection of outer hexagonal crimping nut to it is fixed to screw up, further compacts 7 of silica gel circle and spiral clamping ring 3 under the effect of screwing up, reaches water-proof effects. The operation similar to the above operation is also executed at the lower end of the corrugated pipe 1, an outer hexagonal crimping nut 4 and a silicon ring 7 are sequentially sleeved, the spiral compression ring 3 is screwed and fixed at the lower end of the corrugated pipe 1, the silicon ring 7 compresses the outer edge of the spiral compression ring 3, the outer hexagonal crimping nut 4 compresses the silicon ring 7, an outer hexagonal lower end thread sleeve 5 is in threaded connection with the outer hexagonal crimping nut 4 and is screwed and fixed, and the silicon ring 7 and the spiral compression ring 3 are compacted; the upper end of the adapter 6 is inserted into the inner hole of the outer hexagonal lower end screw sleeve 5 and is fixed on the circumference of the outer hexagonal lower end screw sleeve 5 by screwing 3M 5 screws 8. When the device is installed, the thread sleeve 2 at the upper end of the outer hexagon of the connecting piece is connected with a reserved threaded hole in the secondary junction box of the mutual inductor, the adapter 6 of the connecting piece 1 is connected with the wire outlet pipe, a fully-sealed complete channel is formed between the secondary junction box of the mutual inductor and an instrument, and a secondary lead of the mutual inductor can penetrate through the middle of the secondary junction box.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an outdoor mutual-inductor secondary outlet pipe connecting piece, mutual-inductor secondary binding post is connected to the one end of connecting piece, and instrument or instrument are connected to the other end, and the secondary lead wire of mutual-inductor passes its characterized in that from the connecting piece is inside: the connecting piece comprises a corrugated pipe (1), the upper end of the corrugated pipe (1) is sequentially sleeved with an outer hexagonal crimping nut (4) and a silica gel ring (7), a spiral pressing ring (3) is screwed to the upper end of the corrugated pipe (1) to be fixed, the silica gel ring (7) at the upper end of the corrugated pipe (1) presses the outer edge of the spiral pressing ring (3), the outer hexagonal crimping nut (4) at the upper end of the corrugated pipe (1) presses the silica gel ring (7) at the upper end of the corrugated pipe (1), an outer hexagonal upper end thread sleeve (2) is in threaded connection with the outer hexagonal crimping nut (4), the outer hexagonal upper end thread sleeve (2) is pressed at the upper end of the spiral pressing ring (3), the lower end of the corrugated pipe (1) is sequentially sleeved with the outer hexagonal crimping nut (4) and the silica gel ring (7), the spiral pressing ring (3) is screwed to the lower end of the corrugated pipe (1) to be fixed, the silica gel ring (7) at the lower end of the corrugated pipe (1) presses the outer edge of the spiral pressing ring (3), outer hexagonal crimping nut (4) of bellows (1) lower extreme compress tightly silica gel circle (7) of bellows (1) lower extreme, outer hexagonal lower extreme thread bush (5) with outer hexagonal crimping nut (4) threaded connection, outer hexagonal lower extreme thread bush (5) are pressed at spiral clamping ring (3) lower extreme, and insert the upper end of adapter (6) the hole of outer hexagonal lower extreme thread bush (5) is fixed.

2. The secondary outlet pipe connecting piece of the outdoor mutual inductor according to claim 1, characterized in that: the pipe body of the corrugated pipe (1) is spiral and has elasticity, can be stretched and bent, and can change the direction.

3. The secondary outlet pipe connecting piece of the outdoor mutual inductor according to claim 1, characterized in that: the outer hexagonal crimping nut (4) is tightly matched with the silica gel ring (7) in machining size.

4. The secondary outlet pipe connecting piece of the outdoor mutual inductor according to claim 1, characterized in that: the spiral compression ring (3) is formed by integrally stamping a metal section through a die, and the outer side of the circumference of one end of the ring body is provided with a flanging.

5. The secondary outlet pipe connecting piece of the outdoor mutual inductor according to claim 1, characterized in that: outer hexagonal upper end thread bush (2) structure cavity, double-end processing have the external screw thread, and outer hexagonal upper end thread bush (2) links to each other with the screw hole of reserving in the mutual-inductor secondary terminal box, outer hexagonal lower extreme thread bush (5) structure cavity, one end processing have the external screw thread, and the other end is circular to the three screw hole of equipartition on the circumference, adapter (6) are through screw (8) and outer hexagonal lower extreme thread bush (5) fixed connection, adapter (6) lower extreme links to each other with the play spool, and mutual-inductor secondary lead passes from the centre.

6. The secondary outlet pipe connecting piece of the outdoor mutual inductor according to claim 5, characterized in that: adapter (6) are the annular structure of plastics material, the aperture cooperation of upper end external diameter and outer hexagonal lower extreme thread bush (5), and the lower extreme aperture has multiple diameter specification and the pipe external diameter cooperation of being qualified for the next round of competitions according to the design requirement.

7. The secondary outlet pipe connecting piece of an outdoor mutual inductor according to any one of claims 1 to 6, wherein: the corrugated pipe (1), the outer hexagonal upper end threaded sleeve (2), the spiral pressure ring (3), the outer hexagonal crimping nut (4) and the outer hexagonal lower end threaded sleeve (5) are made of 304 stainless steel.

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