CN111403155A

CN111403155A - Respirator of transformer

Info

Publication number: CN111403155A
Application number: CN202010328249.0A
Authority: CN
Inventors: 冯永亮; 宁雪峰; 陈文睿; 谭传明
Original assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-07-10
Anticipated expiration: 2040-04-23
Also published as: CN111403155B

Abstract

The invention discloses a respirator of a transformer, which comprises a shell and a lifting mechanism arranged outside the shell, wherein a cavity for containing a drying agent is arranged inside the shell, the shell comprises an upper shell and a lower shell, the lower end of the upper shell is detachably connected with the upper end of the lower shell, the upper end of the upper shell is connected with a first connecting pipe, the first connecting pipe is connected with a breathing pipe, the lower end of the lower shell is connected with a second connecting pipe, the second connecting pipe is connected with an oil cup, the lifting mechanism comprises a first lifting part and a second lifting part, the first lifting part is connected with the upper shell, and the second lifting part is connected with the lower shell. The respirator of the transformer is convenient for replacing the drying agent inside.

Description

Respirator of transformer

Technical Field

The invention relates to the technical field of transformer breathing devices, in particular to a respirator of a transformer.

Background

A breather is usually installed on an oil passage expiration channel of the transformer, and the oil in the oil cup is filtered through silica gel in the breather to ensure the drying of the air. The respirator of transformer among the prior art generally includes the glass section of thick bamboo that has both ends open-ended, and the inside packing of glass section of thick bamboo has silica gel granule, and two open ends of glass section of thick bamboo have the apron in order to prevent that silica gel from overflowing from the both ends of glass section of thick bamboo through the connecting bolt shutoff, and the respirator of this kind of structure has following shortcoming: because the cover plate is connected with the two ends of the glass cylinder through the connecting bolts, the connecting bolts at the two ends of the glass cylinder are required to be screwed off when the silica gel is replaced, the cover plate is taken down, the whole glass cylinder is taken down from the transformer, and then the silica gel is replaced, so that the operation is complex and inconvenient.

Disclosure of Invention

The invention aims to: provided is a breather of a transformer, which is convenient for replacing a drying agent inside.

In order to achieve the purpose, the invention adopts the following technical scheme:

the breather of the transformer comprises a shell and a lifting mechanism arranged outside the shell, wherein a cavity for containing a drying agent is arranged inside the shell, the shell comprises an upper shell and a lower shell, the lower end of the upper shell is detachably connected with the upper end of the lower shell, a first connecting pipe is connected with the upper end of the upper shell, the first connecting pipe is connected with a breathing pipe, a second connecting pipe is connected with the lower end of the lower shell, the second connecting pipe is connected with an oil cup, the lifting mechanism comprises a first lifting component and a second lifting component, the first lifting component is connected with the upper shell, and the second lifting component is connected with the lower shell.

As a preferable technical solution of the respirator for the transformer, the first connecting pipe and the second connecting pipe are both elastic telescopic pipes.

As a preferable technical solution of the respirator for the transformer, a connecting portion is provided at the upper end of the lower housing in a protruding manner toward the upper housing, and the outer sidewall of the connecting portion abuts against the inner sidewall of the upper housing.

As a preferable technical solution of the respirator for the transformer, an elastic sealing ring is arranged on an outer side wall of the connecting portion, and the elastic sealing ring abuts against an inner side wall of the upper shell.

As a preferable technical scheme of the respirator of the transformer, the upper shell is annularly provided with a guide groove at a position corresponding to the elastic sealing ring, and the inner side wall of the guide groove inclines from top to bottom towards a direction far away from the connecting part.

As a preferable technical solution of the respirator for the transformer, a first extending portion is provided at the lower end of the upper housing in a protruding manner, a second extending portion is provided at the upper end of the lower housing in a protruding manner, the first extending portion and the second extending portion both extend in a horizontal direction, and the first extending portion and the second extending portion are respectively connected to the first lifting member and the second lifting member.

As a preferable technical scheme of the respirator of the transformer, the respirator further comprises at least one vertically arranged positioning rod, the first extending portion is provided with a first positioning hole in a penetrating manner, the second extending portion is provided with a second positioning hole opposite to the first positioning hole, and the positioning rod sequentially penetrates through the first positioning hole and the second positioning hole.

As a preferable technical scheme of the respirator for the transformer, both the outer side wall of the upper shell and the outer side wall of the lower shell are sleeved with protective sleeves.

As a preferable technical scheme of the respirator for the transformer, the shell is made of a transparent material, and the protective sleeve is provided with an observation window for observing the interior of the shell.

As a preferable technical solution of the respirator for the transformer, an air inlet adjusting valve is disposed at a position where the first connecting pipe is connected with the lower housing.

The invention has the beneficial effects that: first lifting unit is used for driving the upper casing and removes in the vertical direction, second lifting unit is used for driving down the casing and removes in vertical direction, when the inside drier of casing needs to be changed, drive upper casing rebound through first lifting unit and drive down the casing rebound through second lifting unit, make upper casing and lower casing mutual separation, and then change the inside drier of casing, after the drier is changed and finishes, again with upper casing rebound also with lower casing rebound simultaneously, so that upper casing and lower casing interconnect. Because the upper shell and the lower shell are driven to move by the lifting mechanism, the upper shell and the lower shell do not need to be separated manually, and the drying agent is convenient to replace.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a sectional view of a respirator of the transformer according to the embodiment.

In the figure:

1. a housing; 101. an upper housing; 102. a lower housing; 103. a connecting portion; 104. a first extension portion; 105. a second extension portion; 106. a limiting convex part; 107. an elastic sealing ring; 108. a guide groove; 109. an elastic ring; 2. a lifting mechanism; 201. a first lifting member; 202. a second lifting member; 3. a first connecting pipe; 4. a second connecting pipe; 5. a breathing tube; 6. an oil cup; 7. positioning a rod; 8. a protective sleeve.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the respirator of the transformer provided by the invention comprises a housing 1 and a lifting mechanism 2 arranged outside the housing 1, wherein a cavity for accommodating a desiccant is arranged inside the housing 1, the housing 1 comprises an upper housing 101 and a lower housing 102, the lower end of the upper housing 101 is detachably connected with the upper end of the lower housing 102, the upper end of the upper housing 101 is connected with a first connecting pipe 3, the first connecting pipe 3 is connected with a breathing pipe 5, the lower end of the lower housing 102 is connected with a second connecting pipe 4, the second connecting pipe 4 is connected with an oil cup 6, the lifting mechanism 2 comprises a first lifting part 201 and a second lifting part 202, the first lifting part 201 is connected with the upper housing 101, and the second lifting part 202 is connected with the lower housing 102.

Wherein, the first connecting pipe 3 and the second connecting pipe 4 are respectively communicated with the cavity of the shell 1. First lifting unit 201 is used for driving upper casing 101 to move in the vertical direction, second lifting unit 202 is used for driving lower casing 102 to move in the vertical direction, when the inside drier of casing 1 needs to be changed, upper casing 101 is driven to move upwards through first lifting unit 201 and lower casing 102 is driven to move downwards through second lifting unit 202, make upper casing 101 and lower casing 102 separate from each other, and then change the inside drier of casing 1, after the drier is changed, upper casing 101 moves downwards again, also move lower casing 102 upwards simultaneously, so that upper casing 101 and lower casing 102 interconnect. Because the upper shell 101 and the lower shell 102 are driven to move by the lifting mechanism 2, the upper shell 101 and the lower shell 102 do not need to be separated manually, and the drying agent is convenient to replace. The upper shell 101 and the lower shell 102 are respectively connected with the first lifting component 201 and the second lifting component 202, the first lifting component 201 and the second lifting component 202 respectively drive the upper shell 101 to move upwards and the lower shell 102 to move downwards, the upper shell 101 and the lower shell 102 can be separated by a sufficient distance, enough space is reserved for replacing a drying agent in the cavity, and the stroke of the first lifting component 201 and the stroke of the second lifting component 202 are favorably shortened.

In this embodiment, the first connecting pipe 3 and the second connecting pipe 4 are both elastic telescopic pipes. When opening casing 1, can be compressed respectively first connecting pipe 3 and second connecting pipe 4 through elevating system 2 to drive upper casing 101 respectively and rise and drive casing 102 descends down, realize upper casing 101 and lower casing 102 separation, when closing casing 1, first connecting pipe 3 and second connecting pipe 4 are elongated respectively to the decline of upper casing 101 and the decline of lower casing 102, in order to realize upper casing 101 and lower casing 102 interconnect. The design of the upper shell 101 and the lower shell 102 can prevent the breathing tube 5 from being moved during the process of ascending or descending. In the process of lifting the upper shell 101 and the lower shell 102, in order to avoid the oil cup 6 from being moved, the oil cup 6 can be fixedly connected with an external device, and because the second connecting pipe 4 is an elastic telescopic pipe, the oil cup 6 is effectively prevented from moving when the lower shell 102 is lifted.

In an embodiment, a connection portion 103 is provided at the lower end of the upper casing 101 in a protruding manner toward the upper casing 101, and an outer side wall of the connection portion 103 abuts against an inner side wall of the upper casing 101. The connection portion 103 facilitates the connection between the upper housing 101 and the lower housing 102.

Specifically, an elastic sealing ring 107 is arranged between the connecting portion 103 and the inner side wall of the upper shell 101, so that the elastic sealing ring 107 is compressed between the connecting portion 103 and the inner side wall of the upper shell 101, a gap between the upper shell 101 and the lower shell 102 is prevented, and water vapor is effectively prevented from entering the cavity from the connecting position between the upper shell 101 and the lower shell 102. When the upper case 101 and the lower case 102 are coupled, the elastic seal ring 107 is pressed between the coupling portion 103 and the upper case 101, and the difficulty of separating the upper case 101 and the lower case 102 is reduced.

The elastic seal ring 107 is bonded to the connection portion 103 with an adhesive. Preferably, the connecting portion 103 is annularly provided with a groove corresponding to the elastic sealing ring 107, and the elastic sealing ring 107 is arranged in the groove. The setting of recess makes things convenient for the installation of elastic seal ring 107 on the one hand, and on the other hand utilizes the recess to hold the adhesive, improves elastic seal ring 107 and connecting portion 103 adhesive strength.

For the degree of difficulty that casing 101 and casing 102 are connected in the clearance, go up casing 101 and correspond the position ring of elastic sealing ring 107 is equipped with guide groove 108, the inside wall of guide groove 108 from top to bottom is kept away from towards the direction slope of connecting portion 103, the guide groove 108 of this kind of structure makes things convenient for elastic sealing ring 107 to be compressed tightly in guide groove 108 at the in-process that last casing 101 is connected with casing 102 down, has reduced the degree of difficulty that last casing 101 is connected with casing 102 down, and surperficial elastic sealing ring 107 takes place the skew, improves 101 and casing 102's leakproofness down.

In an embodiment, a first extending portion 104 protrudes from a lower end of the upper casing 101, a second extending portion 105 protrudes from an upper end of the lower casing 102, the first extending portion 104 and the second extending portion 105 both extend toward a horizontal direction, and the first extending portion 104 and the second extending portion 105 are respectively connected to the first lifting member 201 and the second lifting member 202. The arrangement of the first extension part 104 and the second extension part 105 facilitates the installation of the first lifting member 201 and the second lifting member 202.

Preferably, the number of the first lifting component 201 and the number of the second lifting component 202 are two, and the two first lifting components 201 and the two second lifting components 202 are distributed at intervals, so that the design is favorable for improving the stability of the upper shell 101 and the lower shell 102 during lifting, and is favorable for preventing the upper shell 101 or the lower shell 102 from generating a lateral deviation phenomenon.

Specifically, the first lifting member 201 and the second lifting member 202 are both lifting cylinders, a piston rod of the first lifting member 201 is connected to the first extension portion 104, and a second extension portion 105 of a piston rod of the second lifting member 202 is connected to the second extension portion 105.

In order to improve the connection strength between the upper shell 101 and the lower shell 102, a limiting protrusion 106 is convexly arranged on the upper surface of the first extending portion 104, an elastic ring 109 is arranged on the second extending portion 105 corresponding to the limiting protrusion 106, and after the upper shell 101 and the lower shell 102 are installed in place, the elastic ring 109 is fastened on the first extending portion 104 and is located between the outer side wall of the upper shell 101 and the limiting protrusion 106. The elastic deformation of the elastic ring 109 provides a locking force to the first extension portion 104 and the second extension portion 105, reducing the possibility of the upper casing 101 and the lower casing 102 being separated. When the housing 1 needs to be opened, the elastic ring 109 is detached from the first extension portion 104, and then the upper housing 101 and the lower housing 102 are driven by the lifting mechanism 2.

In order to prevent the moving direction of the upper shell 101 and the lower shell 102 from deviating, the respirator further comprises at least one positioning rod 7 vertically arranged, the first extending portion 104 is provided with a first positioning hole in a penetrating manner, the second extending portion 105 is provided with a second positioning hole right opposite to the first positioning hole, and the positioning rod 7 sequentially penetrates through the first positioning hole and the second positioning hole. Specifically, the aperture of each of the first positioning hole and the second positioning hole is equal to or larger than the outer diameter of the positioning rod 7. During the process of lifting the upper casing 101 and the lower casing 102, the first extension 104 and the second extension 105 are respectively movable up and down relative to the positioning rod 7.

In order to reduce the friction between the inner side wall of the positioning hole and the positioning rod 7, a bearing sleeve is arranged in the positioning hole and sleeved outside the positioning rod 7.

In order to conveniently place the drying agent in the cavity of the shell 1, in the embodiment, the height of the lower shell 102 is greater than that of the upper shell 101, and the shell 1 with such a structure can place more drying agent in the lower shell 102, so as to facilitate the placement of the drying agent.

In order to prevent the housing 1 from being damaged due to the collision of a foreign object, in the present embodiment, the outer side walls of the upper housing 101 and the lower housing 102 are sleeved with the protective sleeve 8. Specifically, the protection cover 8 can be a sponge cover or a silica gel cover, and the protection cover 8 can provide a buffering effect for external impact force.

In an embodiment, the housing 1 is made of a transparent material, and the protective sleeve 8 is provided with an observation window. Usually, the drying agent in the cavity is silica gel particles, whether the silica gel particles change color or not can be observed by arranging the observation window on the protective sleeve 8, and the drying agent is invalid after the silica gel particles change color and the silica gel particles need to be replaced.

Of course, in other embodiments, the drying agent is not limited to silica gel particles, and may be made of other materials.

As a preferred technical solution, a humidity meter is arranged on the housing 1, and the humidity meter is used for detecting the humidity inside the cavity. The humidity inside the cavity can be directly observed from the outside of the housing 1 by the humidity meter, and when the humidity inside the cavity is measured by the temperature meter to be higher, the desiccant inside the cavity is invalid, and the desiccant needs to be replaced.

In another embodiment, still be provided with the humidity alarm on casing 1, the humidity alarm is used for detecting the inside humidity of cavity, works as when the humidity alarm detects that the inside humidity of cavity exceedes the critical value that has set for, the humidity alarm sends alarm signal, and the inside silica gel of cavity also can in time be changed the drier need not observed to this design.

In this embodiment, an air inlet adjusting valve is disposed at a position where the first connecting pipe 3 is connected to the lower housing 102, and the air flow entering the lower housing 102 can be adjusted by the air inlet adjusting valve, so that the air inlet adjusting valve is convenient to use.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

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 appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The respirator of the transformer is characterized by comprising a shell and a lifting mechanism arranged outside the shell, wherein a cavity for containing a drying agent is arranged inside the shell, the shell comprises an upper shell and a lower shell, the lower end of the upper shell is detachably connected with the upper end of the lower shell, a first connecting pipe is connected with the upper end of the upper shell, the first connecting pipe is connected with a breathing pipe, a second connecting pipe is connected with the lower end of the lower shell, the second connecting pipe is connected with an oil cup, the lifting mechanism comprises a first lifting component and a second lifting component, the first lifting component is connected with the upper shell, and the second lifting component is connected with the lower shell.

2. The transformer respirator of claim 1, wherein the first connecting tube and the second connecting tube are both elastic telescopic tubes.

3. The transformer respirator of claim 1, wherein the upper end of the lower housing is provided with a connection portion protruding toward the upper housing, and an outer sidewall of the connection portion abuts against an inner sidewall of the upper housing.

4. The transformer respirator of claim 3, wherein the outer sidewall of the connecting portion has an elastic sealing ring, and the elastic sealing ring abuts against the inner sidewall of the upper shell.

5. The transformer respirator of claim 4, wherein the upper housing is provided with a guide groove at a position corresponding to the elastic sealing ring, and an inner side wall of the guide groove is inclined from top to bottom in a direction away from the connecting portion.

6. The transformer respirator of claim 1, wherein the lower end of the upper housing is provided with a first extending portion protruding outwards, the upper end of the lower housing is provided with a second extending portion protruding outwards, the first extending portion and the second extending portion both extend towards the horizontal direction, and the first extending portion and the second extending portion are respectively connected to the first lifting member and the second lifting member.

7. The transformer respirator of claim 6, further comprising at least one vertically disposed positioning rod, wherein the first extension portion has a first positioning hole formed therethrough, the second extension portion has a second positioning hole formed opposite to the first positioning hole, and the positioning rod passes through the first positioning hole and the second positioning hole in sequence.

8. The transformer respirator of claim 1, wherein the outer side wall of the upper housing and the outer side wall of the lower housing are each sheathed with a protective jacket.

9. The transformer respirator of claim 8, wherein the housing is made of a transparent material, and the protective sleeve is provided with an observation window for observing the interior of the housing.

10. The transformer respirator of claim 9, wherein an inlet adjusting valve is disposed at a position where the first connection pipe is connected with the lower housing.