CN215834384U

CN215834384U - Sleeve of dry-type transformer

Info

Publication number: CN215834384U
Application number: CN202122381288.XU
Authority: CN
Inventors: 朱晓辉; 游彦
Original assignee: Jiangxi Libaijia Electric Co ltd
Current assignee: Jiangxi Libaijia Electric Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-15
Anticipated expiration: 2031-09-29

Abstract

The utility model provides a sleeve of a dry-type transformer, which comprises a sleeve body, a connecting end rod fixed at the upper end of the sleeve body and a nut in threaded connection with the connecting end rod, wherein a pressing plate for limiting the position of the nut is sleeved on the connecting end rod, two ends of the pressing plate are both fixedly connected with an L-shaped plate, the horizontal part of the L-shaped plate is fixedly connected with a ring edge through a connecting screw, a vertically-arranged round hole is formed in the position of the ring edge facing the horizontal part of the L-shaped plate, an internal thread cylinder fixedly connected with the ring edge is arranged on the lower side of the round hole, a threaded column head is connected with an internal thread of the internal thread cylinder, a spring is arranged on the upper side of the threaded column head, and the upper end of the spring penetrates through the round hole and is contacted with the horizontal part of the L-shaped plate, compared with the prior art, the sleeve has the following beneficial effects: the spring of different length of installation is convenient for, realizes the convenient adjustment of spring-back force size.

Description

Sleeve of dry-type transformer

Technical Field

The utility model relates to a sleeve of a dry-type transformer, belonging to the technical field of transformers.

Background

Dry type transformers are those in which the core and windings are not immersed in insulating oil. The transformer bushing is one of the current carrying components of the transformer.

Chinese utility model patent publication No. CN208208532U discloses an insulating sleeve for a dry-type transformer, which describes: the outside movable mounting of sliding connection outer sleeve has the spring that is located between bridging plate and the buffer board opposite face, and the outrigger passes through threaded rod and drag link swing joint, and the spring can exert reaction force under the concertina action when driving outrigger downstream through twisting the threaded rod to drive the upward application of force of outrigger, and then prevent that the threaded rod is not hard up to cause the outrigger not hard up, but its weak point that exists is: the interval between propping board and the buffer board can not be adjusted, and the size selection scope of installing the spring at propping board and buffer board is less, and can not adjust the size of spring-back force.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a dry-type transformer bushing to solve the problems in the background art, and the dry-type transformer bushing is convenient for mounting springs with different lengths and realizes convenient adjustment of the resilience of the springs.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a sleeve of a dry-type transformer comprises a sleeve body, a plurality of ceramic insulating cylinders fixed on the outer surface of the sleeve body, a connecting end rod fixed at the upper end of the sleeve body and a nut in threaded connection with the connecting end rod, the connecting end rod is sleeved with a pressing plate for limiting the position of a screw cap, both ends of the pressing plate are fixedly connected with L-shaped plates, the horizontal part of the L-shaped plate is fixedly connected with the ring edge through a connecting screw, the ring edge is fixedly connected with the sleeve body, the position of the ring edge facing the horizontal part of the L-shaped plate is provided with a vertically arranged round hole, the lower side of the round hole is provided with an internal thread cylinder fixedly connected with the ring edge, the inner thread cylinder is internally threaded with a thread column cap, a spring is arranged on the upper side of the thread column cap, the upper end of the spring penetrates through the round hole and is in contact with the horizontal part of the L-shaped plate, and a hexagon socket hole is machined in the middle of the lower surface of the thread column cap.

Furthermore, a through hole is formed in the horizontal portion of the L-shaped plate, a threaded blind hole matched with the through hole is formed in the upper surface of the ring edge, and the connecting screw penetrates through the through hole and is connected in the threaded blind hole in a threaded mode.

Furthermore, an annular groove is formed in the outer side of the through hole, the annular groove and the through hole are arranged in a concentric mode, internal threads are machined on the inner surface of the annular groove, a threaded cap is connected to the internal threads of the annular groove, and the upper end of the threaded cap is closed.

Furthermore, a square head is fixed in the middle of the upper surface of the threaded cap, and the square head and the threaded cap are of an integrally formed structure.

Furthermore, an external thread is processed on the outer surface of the lower end of the internal thread cylinder, and an internal thread cover is connected to the lower end of the internal thread cylinder through a thread.

Furthermore, the outer surface of the upper end of the internal thread cylinder is fixedly connected with a connecting ring, and the connecting ring is fixedly connected with a ring edge.

Further, the lower end of the sleeve body is fixedly connected with a connecting seat, and the upper surface of the connecting seat is annular and is provided with a plurality of mounting holes at equal intervals.

The utility model has the beneficial effects that: arrange the spring in an internal thread section of thick bamboo, the position of adjustment screw thread column cap in an internal thread section of thick bamboo realizes the interval between screw thread column cap and the L template horizontal part, is convenient for install the spring of different length between L template horizontal part and screw thread column cap, enlarges the selection range of spring, and during the position of adjustment screw thread column cap in an internal thread section of thick bamboo, the length grow or diminish of spring compressed realizes the convenient adjustment of spring resilience size.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural diagram of a bushing of a dry-type transformer according to the present invention;

FIG. 2 is an enlarged view of the bushing A of the dry-type transformer according to the present invention;

in the figure: the structure comprises a sleeve 1, a sleeve 2, a ceramic insulating cylinder 2, a 3-ring edge, a 4-connecting screw, a 5-thread cap, a 6-L-shaped plate, a 7-pressing plate, an 8-connecting end rod, a 9-nut, a 10-connecting seat, a 11-square head, a 12-round hole, a 13-spring, a 14-connecting ring, a 15-internal thread cylinder, a 16-internal thread cover, a 17-internal hexagonal hole and a 18-thread column head.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a dry-type transformer's sleeve pipe, includes sleeve pipe body 1, fixes a plurality of ceramic insulation section of thick bamboo 2 at 1 surface of sleeve pipe body, fixes line end bar 8 and the nut 9 of threaded connection on line end bar 8 of 1 upper end of sleeve pipe body, and 1 lower extreme fixedly connected with connecting seat 10 of sleeve pipe body, and a plurality of mounting hole has been seted up for annular equidistance on the upper surface of connecting seat 10, utilizes the mounting hole to install connecting seat 10 on dry-type transformer surface, accomplishes sleeve pipe body 1's installation.

The connecting line end rod 8 is sleeved with a pressing plate 7 used for limiting the position of a nut 9, two ends of the pressing plate 7 are fixedly connected with L-shaped plates 6, horizontal portions of the L-shaped plates 6 are fixedly connected with a ring edge 3 through connecting screws 4, the ring edge 3 is fixedly connected with the sleeve body 1, the connecting screws 4 are used for connecting the L-shaped plates 6 with the ring edge 3, and the L-shaped plates 6 and the ring edge 3 are convenient to disassemble.

The through-hole has been seted up to 6 horizontal parts of L template, and 3 upper surfaces of circle limit have been seted up with through-hole matched with screw thread blind hole, and connecting screw 4 passes through-hole threaded connection in the screw thread blind hole, and the design of through-hole and screw thread blind hole is convenient for connecting screw 4's installation.

The through-hole outside is equipped with the ring channel, and the ring channel is arranged with the through-hole is concentric, and ring channel internal surface machining has the internal thread, and ring channel internal threaded connection has screw

cap

5, and 5 upper ends of screw cap are the closure form, and connecting screw 4 installs the back that finishes, twists screw cap 5 in the ring channel, realizes hiding connecting screw 4's effect, reduces connecting screw 4 probability of the corrosion that wets.

The middle position of the upper surface of the threaded cap 5 is fixed with a square head 11, the square head 11 and the threaded cap 5 are of an integrated structure, the square head 11 is installed on the threaded cap 5, and clamping positions are provided for tools such as a wrench.

Circle limit 3 has seted up vertical arrangement's round hole 12 towards the position department of L template 6 horizontal part, round hole 12 downside is equipped with the internal thread section of thick bamboo 15 with circle limit 3 fixed connection, internal thread section of thick bamboo 15 internal thread connection has screw column head 18, screw column head 18 upside is equipped with spring 13, spring 13 upper end runs through round hole 12 and contacts with L template 6 horizontal part, arrange spring 13 in internal thread section of thick bamboo 15, adjust the position in internal thread section of thick bamboo 15 of screw column head 18, realize the interval between screw column head 18 and the 6 horizontal part of L template, be convenient for install the spring 13 of different length between L template 6 horizontal part and screw column head 18, enlarge spring 13's selection range, when the position in internal thread section of thick bamboo 15 of adjustment screw column head 18, the length grow or diminish of spring 13 compressed, realize the convenient adjustment of spring 13 resilience size.

The hexagonal socket 17 is machined in the middle of the lower surface of the threaded column head 18, and the hexagonal socket 17 is designed to facilitate the adjustment of the position of the threaded column head 18 by using a hexagon socket wrench.

The outer surface of the lower end of the internal thread cylinder 15 is provided with external threads, the lower end of the internal thread cylinder 15 is connected with an internal thread cover 16 through threads, and the internal thread cover 16 is screwed on the internal thread cylinder 15 to plug the lower end of the internal thread cylinder 15.

The outer surface of the upper end of the internal thread cylinder 15 is fixedly connected with a connecting ring 14, the connecting ring 14 is fixedly connected with the ring edge 3, the contact range of the internal thread cylinder 15 and the ring edge 3 is enlarged by the design of the connecting ring 14, and the reliability of connection of the internal thread cylinder 15 and the ring edge 3 is improved.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a dry-type transformer's sleeve pipe, includes sleeve pipe body (1), fixes a plurality of ceramic insulation section of thick bamboo (2) at sleeve pipe body (1) surface, fixes line end pole (8) and the nut (9) of threaded connection on line end pole (8) of sleeve pipe body (1) upper end, its characterized in that: a pressing plate (7) for limiting the position of the screw cap (9) is sleeved on the connecting end rod (8), the two ends of the pressing plate (7) are fixedly connected with L-shaped plates (6), the horizontal parts of the L-shaped plates (6) are fixedly connected with the ring edge (3) through connecting screws (4), the ring edge (3) is fixedly connected with the sleeve pipe body (1), a vertically arranged round hole (12) is arranged at the position of the ring edge (3) facing the horizontal part of the L-shaped plate (6), an internal thread cylinder (15) fixedly connected with the ring edge (3) is arranged at the lower side of the round hole (12), a threaded column cap (18) is connected with the internal thread of the internal thread cylinder (15), a spring (13) is arranged on the upper side of the threaded column cap (18), the upper end of the spring (13) penetrates through the round hole (12) and is contacted with the horizontal part of the L-shaped plate (6), and a hexagon socket hole (17) is processed in the middle of the lower surface of the threaded column cap (18).

2. A bushing for a dry-type transformer as claimed in claim 1, wherein: the L-shaped plate (6) is characterized in that a horizontal part is provided with a through hole, the upper surface of the ring edge (3) is provided with a threaded blind hole matched with the through hole, and the connecting screw (4) penetrates through the through hole and is connected in the threaded blind hole in a threaded mode.

3. A bushing for a dry-type transformer as claimed in claim 2, wherein: the novel thread cutting die is characterized in that an annular groove is formed in the outer side of the through hole and is concentrically arranged with the through hole, internal threads are machined in the inner surface of the annular groove, a thread cap (5) is connected to the internal threads of the annular groove, and the upper end of the thread cap (5) is closed.

4. A dry-type transformer bushing according to claim 3, wherein: the screw cap is characterized in that a square head (11) is fixed in the middle of the upper surface of the screw cap (5), and the square head (11) and the screw cap (5) are of an integrally formed structure.

5. A bushing for a dry-type transformer as claimed in claim 1, wherein: the outer surface of the lower end of the internal thread cylinder (15) is provided with an external thread, and the lower end of the internal thread cylinder (15) is connected with an internal thread cover (16) in a threaded manner.

6. A bushing for a dry-type transformer as claimed in claim 1, wherein: the outer surface of the upper end of the internal thread cylinder (15) is fixedly connected with a connecting ring (14), and the connecting ring (14) is fixedly connected with the ring edge (3).

7. A bushing for a dry-type transformer as claimed in claim 1, wherein: the sleeve pipe body (1) lower extreme fixedly connected with connecting seat (10), a plurality of mounting hole has been seted up to connecting seat (10) upper surface for annular equidistance.