CN114242409A

CN114242409A - A lockable flexible straight transformer lead pressure equalizing pipe joint structure

Info

Publication number: CN114242409A
Application number: CN202111245239.1A
Authority: CN
Inventors: 李斌; 杨哲; 李文平; 陈志伟; 李志伟; 赵翠; 邸晓丹; 樊彬
Original assignee: Baoding Tianwei Baobian Electric Co Ltd
Current assignee: Baoding Tianwei Baobian Electric Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-25

Abstract

The invention provides a lockable flexible straight transformer lead wire pressure equalizing pipe joint structure. Wherein the joint structure includes: joint, inner liner, countersunk head screw, threaded wire sleeve, two front and back sections of shielding tube, multi-layer insulating cylinder and struts; the front and rear two sections of shielding tube are respectively sleeved on both ends of the joint The inner liner is inside the joint, and the countersunk head screw passes through the assembly holes of the front and rear shielding pipes and the oblong hole of the joint to fasten the threaded sleeve on the inner liner. together; the outer layers of the two front and rear shielding tubes after fastening are equipped with multi-layer insulating cylinders and struts.

Description

Lockable flexible and direct transformer lead wire pressure equalizing pipe joint structure

Technical Field

The invention relates to the technical field of power transmission and transformation, in particular to a lockable flexible and direct transformer lead wire pressure equalizing pipe joint structure.

Background

The flexible direct-current transmission is important equipment for constructing the intelligent power grid, has stronger technical advantages in aspects of island power supply, capacity increasing transformation of an urban power distribution network, interconnection of alternating-current systems, large-scale wind power plant grid connection and the like compared with the traditional mode, and is a strategic choice for changing the development pattern of a large power grid. With the rapid development of flexible direct-current power transmission, the capacity requirement of the flexible direct-current transformer is increased, and the outlet structure of the flexible direct-current transformer is also complicated. The working current of the large-capacity flexible-direct transformer is relatively large, so that a connecting lead from a winding of the flexible-direct transformer to a sleeve has a relatively large passing current, and in order to ensure the safety of a magnetic field in the flexible-direct transformer, an aluminum pipe or a copper pipe needs to be penetrated into a lead-out path of the large-current lead in the flexible-direct transformer to shield the magnetic field for the lead.

With the increasingly complex outlet design of the flexible-direct transformer, the distance from the winding to the sleeve is increased, and the shielding pipe has to be designed into a special-shaped pipeline formed by splicing multiple sections of simple straight pipes or bent pipes along with the trend of the lead. However, in the actual production and assembly process, the multi-section shielding pipes are easily separated from the joints, so that potential safety hazards are formed. The firm and reliable connection needs to be ensured in the multi-section splicing process of the shielding pipe.

Disclosure of Invention

The invention aims to provide a lockable flexible and direct transformer lead wire pressure equalizing pipe joint structure to solve the technical problems in the prior art.

The invention provides a lockable flexible and direct transformer lead wire pressure equalizing pipe joint structure, which comprises: the joint and the front and rear sections of shielding pipes;

the front and the rear sections of shielding pipes are respectively sleeved on the outer layers of the two end parts of the joint.

In some embodiments, the structure further comprises: an inner liner tube, a countersunk head screw and a threaded thread sleeve;

the inner liner pipe is arranged inside the joint, and the countersunk head screws penetrate through the assembly holes of the front and rear sections of shielding pipes and the long round holes of the joint to be fastened with the threaded screw sleeves on the inner liner pipe.

In some embodiments, the two lengths of coupling tube of the fitting are equally slotted.

In some embodiments, the joint is limited by a boss in the middle.

In some embodiments, two shield tubes of the front and rear shield tubes are fitted with respective inner liners.

In some embodiments, each of the inner liners is fastened by two of the grub screws.

In some embodiments, two counter bores are designed on the front and rear shielding pipes.

In some embodiments, the inner liner has a threaded bore therein.

In some embodiments, the material of the joint and the inner liner is steel.

In some embodiments, the structure further comprises: a plurality of layers of insulating cylinders and stays; and a plurality of layers of insulating cylinders and supporting strips are additionally arranged on the outer layers of the front and rear sections of the fastened shielding pipes.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the utility model provides a can lock gentle straight transformer lead wire pressure-equalizing pipe joint, the perfect reliability of having guaranteed the shielding pipe concatenation of structure of coupling has eliminated the influence of work tolerance to assembly size. The requirement of splicing strength is guaranteed, and the requirement of electrical contact between spliced shielding pipes is met. The yield of the production and the assembly of the special-shaped shielding pipe formed by splicing multiple sections is improved, and the production and the assembly are simpler and more reliable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a spliced shielded pipe;

FIG. 2 is a schematic illustration of the assembly of the lockable joint;

FIG. 3 is a schematic view of a joint;

FIG. 4 is a schematic view of the joint and the inner liner;

FIG. 5 is a left side view of the joint and inner liner schematic;

FIG. 6 is a front view of the interior liner of the joint;

FIG. 7 is a left side view of the schematic of the inner liner of the joint;

FIG. 8 is a schematic view of a shield tube opening;

FIG. 9 is a partial view of the insulated shield tube coupling portion;

in the figure: the cable comprises a connector 1, an internal liner tube 2, a countersunk screw 3, a threaded sleeve 4, a spliced shielding tube 5, an insulating cylinder 6 and a stay 7.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Example (b):

as shown in fig. 1, 2 and 3, the present invention provides a lockable flexible and straight transformer lead pressure equalizing pipe joint structure, which comprises: the connector 1 and the front and rear shielding pipes 5;

the front and rear shielding pipes 5 are respectively sleeved on the outer layers of the two end parts of the joint 1, and the assembly distance of the two shielding pipes 5 can be flexibly adjusted through the long round holes in the joint 1 according to requirements during assembly.

Further according to the above solution, as shown in fig. 4-7, the structure further includes: an inner liner tube 2, a countersunk head screw 3 and a threaded sleeve 4;

the inner liner pipe 2 can freely move inside the joint 1, and the countersunk head screw 3 passes through the assembly holes of the front and rear sections of shielding pipes 5 and is fastened with the long round hole of the joint 1 and the threaded screw sleeve 4 on the inner liner pipe 2; two sections of shielding pipes of the front and rear sections of shielding pipes 5 are assembled with the corresponding inner liner pipes 2 respectively.

The joint 1 and the inner liner tube 2 are made of steel.

According to the scheme, as shown in fig. 3-5, the two sections of the connecting pipes of the joint 1 are equally slotted, so that the clamping and fixing are facilitated, and the long round holes are arranged at proper positions, so that the assembly and adjustment are facilitated; the middle of the joint 1 is limited by a boss, so that the front and rear shielding pipes 5 are prevented from colliding during assembly.

Further according to the above solution, each of the inner liners 2 requires two of the grub screws 3 to be fastened; as shown in fig. 8, openings are formed at the ends of the front and rear shielding pipes 5 for assembly, and two counter bores are designed on the front and rear shielding pipes 5 to ensure that no protrusion occurs after the front and rear shielding pipes are assembled with the counter screws 3; the inner liner 2 is provided with a threaded hole;

after the countersunk head screw 3 is fastened, the front and the rear shielding pipes 5 can not move randomly any more, and the enough installation strength can be ensured.

Further according to the above scheme, as shown in fig. 9, the structure further includes: a multilayer insulating cylinder 6 and a stay 7; the outer layer of the front and rear sections of the fastened shielding pipes 5 is additionally provided with a multilayer insulating cylinder 6 and a stay 7 to form a partition plate system, so that the shielding pipes can meet the requirement of electric field design and the splicing strength of the shielding pipes is further enhanced.

The lockable flexible-direct transformer lead wire pressure equalizing pipe joint has the advantages that the structure of the pipe joint perfectly ensures the splicing reliability of the shielding pipes, and the influence of work difference on the assembly size is eliminated. The requirement of splicing strength is guaranteed, and the requirement of electrical contact between spliced shielding pipes is met. The yield of the production and the assembly of the special-shaped shielding pipe formed by splicing multiple sections is improved, and the production and the assembly are simpler and more reliable.

While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. In other instances, features described in connection with one embodiment may be implemented as discrete components or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Further, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A lockable flexible straight transformer lead pressure equalizing pipe joint structure, characterized in that the structure comprises: a joint and two front and rear shielding pipes;

The two front and rear shielding tubes are respectively sleeved on the outer layers of both ends of the joint.

2. The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 1, wherein the structure further comprises: an inner liner, a countersunk head screw and a threaded wire sleeve;

The inner liner is inside the joint, and the countersunk head screw is fastened together with the threaded socket on the inner liner through the fitting holes of the front and rear shielding pipes and the oblong hole of the joint.

3 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 2 , wherein the two sections of the connecting pipe of the joint are equally separated from each other. 4 .

4 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 3 , wherein a boss is provided in the middle of the joint to limit the position. 5 .

5 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 2 , wherein the two sections of shielding pipes of the front and rear two sections of shielding pipes are assembled with respective corresponding inner lining pipes. 6 .

6 . The lockable flexible straight transformer lead pressure equalizing pipe joint structure according to claim 2 , wherein each of the inner lining pipes is fastened by two of the countersunk head screws. 7 .

7 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 6 , wherein two counterbores are designed on the two front and rear shield pipes. 8 .

8 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 7 , wherein the inner liner is provided with threaded holes. 9 .

9 . The lockable flexible straight transformer lead wire pressure equalizing pipe joint structure according to claim 2 , wherein the material of the joint and the inner liner is steel. 10 .

10 . The lockable flexible straight transformer lead pressure equalizing pipe joint structure according to claim 1 , wherein the structure further comprises: multi-layer insulating cylinders and struts; two front and rear shielding pipes after being fastened The outer layer is equipped with multi-layer insulating cylinders and struts.