CN212751620U

CN212751620U - Pipeline tree node connecting flange pipe

Info

Publication number: CN212751620U
Application number: CN202021853489.4U
Authority: CN
Inventors: 张道勇; 张爱华; 孙升峰; 茅少群
Original assignee: Jiangsu Yonglong Electric Co ltd
Current assignee: Jiangsu Yonglong Electric Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-03-19
Anticipated expiration: 2030-08-28

Abstract

The pipeline tree node is connected with the flange pipe. Relate to gas insulation power equipment technical field, especially relate to gas insulation pipeline tree. The utility model provides an utilize elasticity end cap, can carry out sealed pipeline tree node flange pipe at pipeline tree node end. The utility model discloses install the connected node position at the pipeline tree, the through-hole that elasticity end cap can be followed to the conducting rod in the pipeline tree passes, and elasticity end cap can live the inseparable parcel of conducting rod to keep apart whole pipeline tree and be a plurality of cavity. When in maintenance, the insulating gas in the whole pipeline tree does not need to be completely exhausted, thereby reducing the exhaust time and the filling amount of the secondary filling insulating gas, and ensuring that the possibility of oxygen deficiency is reduced in the indoor environment. Under the environment of a pipeline with one side opened, even if the strength of the elastic filling block is smaller than the pressure of the insulating gas in the cavity to cause the overflow and dispersion of the insulating gas, only a small amount of insulating gas needs to be refilled after the maintenance of the pipeline tree.

Description

Pipeline tree node connecting flange pipe

Technical Field

The utility model relates to a gas-insulated power equipment technical field especially involves gas-insulated pipeline tree.

Background

With the technical development of gas insulated electric power equipment, the amount of use in newly built electric power equipment is increasing. Sulfur hexafluoride (SF) is commonly used₆) The insulating protective gas is filled in the pipe tree, and the air in the pipe tree is replaced by the protective gas.

Along with the improvement of the existing detection technology, a maintainer can accurately position a fault point according to fault information. Thereby need not to disassemble whole the dismantling of pipe tree. However, when the pipe tree is repaired, the pipelines in the fault area in the pipe tree still need to be disassembled, so that the insulating gas in the whole pipe tree system still leaks out completely, and especially in an indoor environment, oxygen deficiency in a local environment can be caused, and damages are brought to a maintainer.

In addition, evacuating the insulating gas both extends the maintenance time and requires refilling a large amount of insulating gas after the maintenance is completed, increasing the maintenance cost.

Disclosure of Invention

The utility model provides an to above problem, provide an utilize elasticity end cap, can carry out the pipeline tree node flange pipe that seals at pipeline tree node end.

The technical scheme of the utility model is that: the pipeline tree node connecting flange pipe comprises a pipe body and flange plates arranged at two ports of the pipe body, wherein an elastic plug is arranged in the pipe body and provided with a through hole, the through hole is consistent with the axis direction of the pipe body, the diameter of the through hole is smaller than a conducting rod in a pipeline tree, and the elastic plug is connected to the inner wall of the pipe body.

The hole opening of the through hole is in a horn shape.

The end face of the elastic plug is lower than the end face of the flange plate.

The inner wall of the pipe body is provided with at least one annular groove.

The elastic plug is of an annular hollow air chamber structure, and protective gas is filled in the annular hollow air chamber.

The end surface of the elastic plug is bulged to be in a cone shape.

The utility model discloses install the connected node position at the pipeline tree, the through-hole that elasticity end cap can be followed to the conducting rod in the pipeline tree passes, and elasticity end cap can live the inseparable parcel of conducting rod to keep apart whole pipeline tree and be a plurality of cavity. When in maintenance, the insulating gas in the whole pipeline tree does not need to be completely exhausted, thereby reducing the exhaust time and the filling amount of the secondary filling insulating gas, and ensuring that the possibility of oxygen deficiency is reduced in the indoor environment.

Under the environment of a pipeline with one side opened, even if the strength of the elastic filling block is smaller than the pressure of the insulating gas in the cavity to cause the overflow and dispersion of the insulating gas, only a small amount of insulating gas needs to be refilled after the maintenance of the pipeline tree.

Drawings

Figure 1 is a schematic perspective view of the present invention,

figure 2 is a schematic structural view of the present invention,

figure 3 is a cross-sectional view taken along line a-a of figure 2,

figure 4 is a schematic cross-sectional structure diagram of a first preferred embodiment of the present invention,

figure 5 is a schematic cross-sectional structure diagram of a second preferred embodiment of the present invention,

fig. 6 is a schematic cross-sectional structure diagram of a third preferred embodiment of the present invention.

In the figure, 1 is a flange, 2 is a pipe body, 21 is an annular groove, 3 is an elastic plug, 31 is a through hole, 32 is a bell mouth, and 33 is an annular hollow air chamber.

Detailed Description

The present invention will be further explained with reference to fig. 1-6, as shown in fig. 1-3, which includes a tube body 2 and a flange 1 disposed at two end openings of the tube body 2, wherein an elastic plug 3 is disposed in the tube body 2, the elastic plug 3 is provided with a through hole 31, the through hole 31 is identical to the axis direction of the tube body 2, the diameter of the through hole 31 is smaller than the conductive rod in the pipe tree, and the elastic plug 3 is connected to the inner wall of the tube body 2. When the conducting rod in the pipe tree passes through the through hole 31 of the elastic plug 3, the elastic plug 3 can wrap the conducting rod tightly, so that the whole pipe tree is isolated into a plurality of cavities. When the pipeline tree is maintained, any one cavity is opened for maintenance, and the insulating gas in the other cavities does not need to be emptied, so that the exhaust time and the filling amount of the secondary filling insulating gas are reduced, and the possibility of oxygen deficiency in an indoor environment can be reduced.

The opening of the through hole 31 is flared to form a flared opening 32, which has a guiding function and is beneficial to the insertion of the conducting rod in the installation process.

The end face of the elastic plug 3 is lower than the end face of the flange plate 1, so that the elastic plug 3 is prevented from being clamped between the flange plates 1 to influence the sealing effect in the installation process.

The utility model discloses an optimize the embodiment and as shown in figure 4, 2 inner walls of body are equipped with annular groove 21 one at least, and the periphery of elasticity end cap 3 has increased body 2 and elasticity end cap 3's joint strength in being absorbed in annular groove 21.

The optimized embodiment of the utility model is as shown in fig. 5, the elastic plug is an annular hollow air chamber structure, and the annular hollow air chamber is filled with the protective gas, so that the elastic strength of the elastic plug can be ensured while the plug material is saved and the weight is reduced.

The utility model discloses an optimize the embodiment and show as figure 5, the terminal surface uplift of elasticity end cap 3 is the cone form, has increased the area of contact of through-hole 31 with the conducting rod, further guarantees sealed effect.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The pipeline tree node connecting flange pipe comprises a pipe body and flange plates arranged at two ports of the pipe body, and is characterized in that an elastic plug is arranged in the pipe body and provided with a through hole, the through hole is consistent with the axis direction of the pipe body, the diameter of the through hole is smaller than a conducting rod in a pipeline tree, and the elastic plug is connected to the inner wall of the pipe body.

2. The piping tree node connecting flange pipe of claim 1, wherein the orifice of said through hole is flared.

3. The pipe tree node connecting flange pipe of claim 1, wherein the end face of the resilient plug is lower than the end face of the flange.

4. The piping tree node connecting flange pipe of claim 1, wherein said pipe body inner wall is provided with at least one annular groove.

5. The pipe tree node connecting flange pipe of claim 1, wherein the elastic plug is an annular hollow air chamber structure, and the annular hollow air chamber is filled with a protective gas.

6. The pipe tree node connecting flange pipe according to claim 1, wherein the end surface of the elastic plug is raised in a cone shape.