CN112968390A

CN112968390A - GIS equipment package module

Info

Publication number: CN112968390A
Application number: CN202110043324.3A
Authority: CN
Inventors: 张锐; 卢鹏; 王丽娟; 付兴芳; 董军利; 刘旭; 韩峰; 刘通辉; 娄晓丹; 方启; 付佳佳; 程伟然
Original assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Current assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-06-15

Abstract

The invention provides a GIS equipment assembly module, which comprises a circuit breaker and a current transformer, wherein the current transformer comprises a cylinder and an inner conductor penetrating out of the cylinder, the GIS equipment assembly module also comprises a GIS equipment supporting and protecting device, and the GIS equipment supporting and protecting device comprises: the cylinder end cover is fixedly connected with the cylinder; the insulating support is fixed on the end cover of the cylinder body and is used for the inner conductor to pass through and support the inner conductor; and the conductor end cover is detachably connected to the cylinder end cover or the insulating support, covers the outside of the inner conductor in the transportation process, and is detached after reaching an installation site so as to enable the connecting conductor of the current transformer testing device to be in contact conduction with the inner conductor. According to the invention, after the current transformer arrives at an installation site, the error test of the current transformer can be carried out only by removing the conductor end cover without removing the cylinder end cover and the insulating support, the end support of the inner conductor is reserved, no additional support component is required to be arranged, the number of accessories of the GIS is reduced, the workload of disassembly and assembly is reduced, and the operation steps are simplified.

Description

GIS equipment package module

Technical Field

The invention relates to the technical field of GIS, in particular to a GIS equipment assembly module.

Background

A GIS (gas insulated metal enclosed switch) integrates elements such as circuit breakers, disconnectors, earthing switches, current transformers, busbars, etc. required in a substation. As shown in fig. 1, in the extra-high voltage and ultra-high voltage GIS, the current transformer 20 is generally disposed on the left and right sides of the circuit breaker 10, the GIS is assembled in a modular manner, the current transformer 20 and the circuit breaker 10 form an assembly module, and the inner conductor 30 of the current transformer 20 extends out of the cylinder after the assembly so as to be connected with the disconnector after reaching an installation site. Since the inner conductor 30 extends out of the cylinder, a support and protection device needs to be connected to the cylinder during transportation to support the inner conductor 30 to prevent the inner conductor 30 from being suspended, and to protect the inner conductor 30 outside.

At present, the existing supporting and protecting device is an integral piece, and when the error test of the current transformer is carried out after the current transformer arrives at an installation site, the supporting and protecting device needs to be detached, so that a connecting conductor of the testing device is in plug-in connection with an inner conductor 30, a testing instrument is in connection with a loop inside a GIS (including a current transformer section), and the test can be completed. However, in order to avoid suspending the inner conductor 30, an additional insulating support needs to be arranged, so that a supporting and protecting device needs to be equipped in the transportation process, and an insulating support needs to be equipped in the test process, so that the number of accessories of the GIS is large, the manufacturing cost is increased, the storage is inconvenient, the workload of disassembling and assembling different accessories is increased, and the operation is complicated.

Disclosure of Invention

The invention aims to provide a GIS equipment assembly module to solve the problems of increased manufacturing cost, inconvenient storage, large disassembly and assembly workload and complex operation caused by more accessories of the existing GIS.

In order to achieve the purpose, the GIS equipment assembly module adopts the following technical scheme:

the utility model provides a GIS equipment package module, includes the circuit breaker and installs the current transformer at both ends about the circuit breaker, and current transformer includes the barrel and wears out the inner conductor of barrel, and GIS equipment package module still includes GIS equipment support protector, and GIS equipment support protector includes:

the cylinder end cover is fixedly connected with the cylinder through a bolt;

the insulating support is fixed on the end cover of the cylinder body, and the insulating support is used for the inner conductor to pass through and support the inner conductor and insulate the inner conductor from the cylinder body;

and the conductor end cover is detachably connected to the cylinder end cover or the insulating support, is used for covering the outer part of the inner conductor in the transportation process and is detached after reaching an installation site, so that the connecting conductor of the current transformer testing device can be in contact conduction with the inner conductor.

The beneficial effects of the above technical scheme are that: the cylinder end cover is fixedly connected with the cylinder of the current transformer, the insulation support is convenient to fix, the insulation support is used for the inner conductor to penetrate through and support the inner conductor, and therefore the inner conductor is prevented from being suspended. Conductor end cover releasable connection is on barrel end cover or insulation support to cover in the transportation and establish the outside at inner conductor, form the protection to inner conductor, avoid inner conductor to produce and collide with, also can avoid the foreign matter to get into inside the barrel simultaneously. And just because the conductor end cover is removable, consequently tear open after arriving the installation scene, just can make things convenient for current transformer testing arrangement's connecting conductor and inner conductor contact and switch on, carry out current transformer's error test.

In other words, the GIS equipment supporting and protecting device supports the inner conductor through the insulating support in the transportation process, the conductor end cover protects the inner conductor, the error test of the current transformer can be carried out only by removing the conductor end cover after the GIS equipment supporting and protecting device reaches an installation site, the cylinder end cover and the insulating support do not need to be removed, and the end supporting effect of the inner conductor is kept, so that an additional supporting component does not need to be arranged, the number of accessories of the GIS can be reduced, the storage is convenient, the dismounting workload is reduced, and the operation steps are simplified.

Furthermore, in order to facilitate the processing and manufacturing of the cylinder end cover, the cylinder end cover comprises an end plate and a sleeve body welded and fixed on the end plate, the end plate is fixedly connected with the cylinder, the sleeve body is used for the inner conductor to pass through, and the insulating support is fixed on the sleeve body.

Furthermore, in order to facilitate the fixed installation of the insulating support and avoid the protrusion of the insulating support from affecting the connection of the conductor end cap, an installation step is arranged in the inner hole of the sleeve body, the insulating support is fixed on the installation step, and the end face of the insulating support is flush with the end face of the sleeve body or is positioned on the inner side of the end face of the sleeve body.

Furthermore, in order to facilitate the disassembly and assembly of the insulating support, the insulating support is fixed on the installation step through an installation screw, and a sinking structure for sinking the head of the installation screw is arranged on the insulating support.

Furthermore, in order to facilitate the processing and manufacturing of the conductor end cover, the conductor end cover comprises a pipe body, a sealing plate welded and fixed at one end of the pipe body, and an annular fixing plate welded and fixed at the other end of the pipe body, wherein the annular fixing plate is detachably connected to the end cover of the pipe body through a fixing screw.

Furthermore, in order to guarantee the air tightness, an independent airtight air chamber is conveniently formed, dry air or nitrogen of micro-positive pressure is flushed into the air chamber before transportation, the air chamber is kept in an environment in a factory when the air chamber is installed, it is ensured that water cannot enter the inside of the air chamber, foreign matters cannot be mixed into the inside of a unit, cleanliness is guaranteed, a sealing ring is arranged between an annular fixing plate and a cylinder end cover, and a part, in contact with the cylinder, of the cylinder end cover is provided with a sealing ring installation groove.

Further, for better protection inner conductor, avoid vibrations to cause damage or wearing and tearing to inner conductor, GIS equipment supports protector still includes and is used for the cover to establish the sheath at inner conductor tip, and the sheath is located the inside of conductor end cover.

Further, in order to improve the protective effect, make things convenient for the dismouting of sheath simultaneously, the sheath is equipped with two-layerly, the sheath include inlayer sheath and with inlayer sheath fixed connection's outer sheath, inlayer sheath and outer sheath all are the cup, the length of outer sheath is less than the length of inlayer sheath.

Further, in order to ensure the clamping force of the sheath, a plurality of protrusions for contacting with the inner conductor are arranged on the inner wall of the inner sheath.

Drawings

FIG. 1 is a diagram of a GIS device assembly module in the prior art;

FIG. 2 is a structural view of a GIS equipment assembly module in a transportation state according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a structural diagram of a GIS equipment assembly module carrying out a current transformer error test after arriving at an installation site;

fig. 5 is a partially enlarged view of fig. 4.

In the figure: 10-a circuit breaker; 20-a current transformer; 21-barrel body; 22 a cylinder flange; 30-an inner conductor; 40-a GIS equipment supporting and protecting device; 41-end plate; 42-the sheath body; 43-an insulating support; 44-annular fixed plate; 45-a tube body; 46-closing plate; 47-outer sheath; 48-inner layer sheath; 50-a current transformer test device; 51-a connecting conductor; 52-a connecting plate; 61-bolt; 62-a set screw; 63-mounting screws.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the 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 invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

An embodiment of the GIS equipment assembly module of the present invention is shown in fig. 2, and includes a circuit breaker 10 and current transformers 20 installed at left and right ends of the circuit breaker 10, where the current transformers 20 include a cylinder 21 and an inner conductor 30 penetrating through the cylinder 21, and the structures of the current transformers 20, the inner conductor 30, and the circuit breaker 10 are the same as those of the prior art.

What is different is, GIS equipment assembly module still includes the GIS equipment at both ends and supports protector 40, and GIS equipment supports protector 40 and includes barrel end cover, insulating support, conductor end cover and sheath. Referring to fig. 3, the cylinder end cap includes an end plate 41 and a sleeve 42 welded to the end plate 41, the end plate 41 is fixedly connected to the cylinder flange 22 of the cylinder 21 by bolts 61, a seal ring (not shown) is disposed between the end plate 41 and the cylinder flange 22, and specifically, a seal ring mounting groove is disposed on a portion of the end plate 41, which is in contact with the cylinder flange 22.

As shown in fig. 3, the sheath body 42 is penetrated by the inner conductor 30, the insulating support 43 is fixed to the sheath body 42, and the insulating support 43 is penetrated by the inner conductor 30 and supports the inner conductor 30, so that the insulating support 43 is provided with a through hole. An installation step (not marked in the figure) is arranged in the inner hole of the sleeve body 42, the insulating support 43 is fixed on the installation step, and the end face of the insulating support 43 is flush with the end face of the sleeve body 42, so that the installation of the conductor end cover is prevented from being influenced. Moreover, the insulating support 43 is fixed on the mounting step through the mounting screw 63, and the insulating support 43 is provided with a sinking structure for sinking the head of the mounting screw 63.

The end cap of the conductor, which is detachably connected to the end cap of the cylinder and used for covering the outer part of the inner conductor 30 during transportation, is shown in fig. 3, and includes a tube 45, a sealing plate 46 welded to one end of the tube 45, and an annular fixing plate 44 welded to the other end of the tube 45, and the annular fixing plate 44 is detachably connected to the sleeve body 42 by a fixing screw 62. Be provided with the sealing washer between annular fixed plate 44 and the cover body 42, guaranteed the gas tightness, can make current transformer be in solitary airtight air chamber, with the dry air or the nitrogen gas of pouring the pressure-fired in the air chamber before the transportation, keep its environment in the mill when being in the installation, ensure inside can not get into moisture, guaranteed simultaneously that the unit is inside can not sneak into the foreign matter, guarantee the cleanliness factor.

The sheath is used for the cover to establish at inner conductor 30 tip, and the sheath adopts rubber class elastic material, and the parcel is lived inner conductor and is played the shock attenuation effect, avoids vibrations to cause damage or wearing and tearing to inner conductor 30. The sheath is located the inside of conductor end cover, as shown in fig. 3, the sheath is equipped with two-layerly, the sheath include inlayer sheath 48 and with inlayer sheath 48 fixed connection's outer sheath 47, inlayer sheath 48 and outer sheath 47 all are the cup-like to the length of outer sheath 47 is less than inlayer sheath 48's length, has so not only improved the protective effect, makes things convenient for the staff to grip simultaneously, the dismouting of the sheath of being convenient for. Meanwhile, a plurality of protrusions for contacting the inner conductor 30 are provided on the inner wall of the inner sheath 48, so that the grip of the sheath can be secured.

The states shown in fig. 2 and 3 are completed in a factory, and the posture is kept in the whole transportation process, so that the inner conductor 30 is supported by the insulating support 43 in the transportation process, the sheath is used for damping, the conductor end cover is used for protecting, the influence of various environments such as acceleration, various jolts, wind, rain and the like is avoided in long-distance transportation, the vibration prevention and sealing functions are ensured, and further, the influence on inner parts is avoided when the unit arrives at the site.

As shown in fig. 4, after the GIS device assembly module arrives at an installation site, an error test needs to be performed on the current transformer, at this time, the conductor end cover and the sheath in the GIS device supporting and protecting device 40 are removed, and as shown in fig. 5, the connecting conductor 51 of the current transformer testing device 50 is installed on the exposed inner conductor 30, and a corresponding contact finger is arranged in the connecting conductor 51, so that sufficient holding force is ensured, and reliable electrical connection is ensured. One end of the connecting plate 52 is fastened with the connecting conductor 51 through a bolt, and the other end is connected with a wire in a test instrument to form an error test posture of the current transformer shown in fig. 4, and then the test is completed as required.

During error test, only the conductor end cover and the sheath are removed, the cylinder end cover and the insulating support 43 do not need to be removed, the end supporting effect of the inner conductor is kept, and due to the arrangement of the insulating support 43, a certain gap is kept between the inner conductor 30 and the cylinder end cover, so that the inner loop and the cylinder are in an insulating state; on the other hand, only a small gap is formed between the insulating support 43 and the inner conductor 30, so that the inner parts are completely isolated from the external environment in the test process, foreign matters are prevented from entering, and the test reliability is improved.

By adopting the GIS equipment supporting and protecting device, when the current transformer is subjected to error test, no additional supporting part is needed, so that the number of accessories of the GIS can be reduced, the storage is convenient, the workload of disassembly and assembly is reduced, and the operation steps are simplified.

In other embodiments of the GIS device assembly module, the inner wall of the inner sheath may be free of protrusions and only the inner wall of the inner sheath may contact the inner conductor.

In other embodiments of the GIS device assembly module, the sheath may be provided with only one layer.

In other embodiments of the GIS device assembly module, the sheath may not be provided.

In other embodiments of the GIS equipment assembly module, the seal ring may not be provided without inflation prior to shipping.

In other embodiments of the GIS device assembly module, the conductor end caps may be integrally formed as a single piece.

In other embodiments of the GIS device assembly module, the sinking structure on the insulating support may also be a countersunk hole, or the sinking structure may not be provided on the insulating support.

In other embodiments of the GIS device assembly module, the insulating support may also be adhesively secured to the mounting step.

In other embodiments of the GIS device assembly module, the end face of the insulating support may also be located inside the end face of the sleeve body.

In other embodiments of the GIS device assembly module, the sleeve body may not have a mounting step, and the insulating support may be directly fixed on the end surface of the sleeve body.

In other embodiments of the GIS device assembly module, the cartridge end cap may be a one-piece, unitary piece that is integrally formed.

In other embodiments of GIS device assembly modules, the cartridge end cap may include only end plates, without a sleeve structure.

In other embodiments of the GIS device assembly module, the conductor end cap may also be detachably connected to the insulating support.

In other embodiments of the GIS device assembly module, the detachable connection of the conductor end caps may be a pin connection or a press plate fixation.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. The utility model provides a GIS equipment package module, includes the circuit breaker and installs the current transformer at both ends about the circuit breaker, and current transformer includes the barrel and wears out the inner conductor of barrel, and its characterized in that, GIS equipment package module still include GIS equipment support protector, and GIS equipment support protector includes:

the cylinder end cover is fixedly connected with the cylinder through a bolt;

2. The GIS equipment assembly module of claim 1, wherein the end cap includes an end plate and a covering welded to the end plate, the end plate is fixedly connected to the cylinder, the covering is configured to pass through the inner conductor, and the insulating support is fixed to the covering.

3. The GIS device assembly module of claim 2, wherein the inner hole of the housing has a mounting step, the insulating support is fixed on the mounting step, and an end surface of the insulating support is flush with or inside an end surface of the housing.

4. The GIS device assembly module of claim 3, wherein the insulating support is fixed on the mounting step by a mounting screw, and a sinking structure for sinking a head of the mounting screw is provided on the insulating support.

5. The GIS equipment assembly module of any one of claims 1 to 4 wherein the conductor end cap comprises a tubular body, a sealing plate welded to one end of the tubular body, and an annular fixing plate welded to the other end of the tubular body, the annular fixing plate being detachably attached to the tubular body end cap by means of fixing screws.

6. The GIS equipment assembly module of claim 5, wherein a sealing ring is disposed between the annular fixing plate and the cylinder end cover, and a sealing ring mounting groove is disposed on a portion of the cylinder end cover contacting the cylinder.

7. The GIS equipment assembly module of any one of claims 1-4 wherein the GIS equipment support and protection device further includes a sheath for sheathing the end of the inner conductor, the sheath being located inside the end cap of the conductor.

8. The GIS device assembly module of claim 7, wherein the sheath is provided in two layers, the sheath including an inner sheath and an outer sheath fixedly connected to the inner sheath, the inner sheath and the outer sheath each having a cup shape, and a length of the outer sheath being less than a length of the inner sheath.

9. The GIS device assembly module of claim 8 wherein the inner jacket has a plurality of protrusions formed on an inner wall thereof for contacting the inner conductor.