CN210106812U - Oil pipe joint on oil-immersed transformer - Google Patents
Oil pipe joint on oil-immersed transformer Download PDFInfo
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- CN210106812U CN210106812U CN201920836196.6U CN201920836196U CN210106812U CN 210106812 U CN210106812 U CN 210106812U CN 201920836196 U CN201920836196 U CN 201920836196U CN 210106812 U CN210106812 U CN 210106812U
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Abstract
The utility model relates to an oil guide pipe joint on an oil immersed transformer, which aims to solve the technical problem that the joint between a gas relay and an oil guide pipe on the current oil immersed transformer is easy to leak oil, and comprises a joint body, wherein the fixed end of the joint body is fixedly connected with the oil guide pipe, and the connecting end of the joint body is connected with a flange joint on the gas relay; the section of the joint body is in a T shape which is transversely arranged, a flexible gasket and a rubber sealing ring are arranged in a cavity of the vertical part of the joint body, and the rubber sealing ring is embedded into the side wall in the cavity of the vertical part of the joint body and is fixedly connected with the flexible gasket; the flange joint can be dismantled and set up in the vertical partial cavity of joint body, and its composition surface supports on the lateral wall of flexible packing ring, the utility model has the advantages of simple structure, compactness, sealed effectual.
Description
Technical Field
The utility model relates to a substation equipment technical field especially relates to an oil pipe joint is led that oil pipe is connected with gas relay (buchholz relay) on with oil-immersed transformer.
Background
A gas relay, also called a buchholz relay, is an important safety protection device on an oil-immersed transformer, and is usually installed on an oil conduit 12 (shown in fig. 1 and 2) between an oil conservator 11 and an oil tank 1, and a signal or a trip circuit is connected under the action of gas or oil flow generated by internal faults of the transformer, so that related devices send alarm signals or the transformer is cut off from a power grid, and the function of protecting the transformer is achieved; present gas relay passes through the flange and leads oil pipe to be connected, because there is uneven condition, the flange is too thin easy to be out of shape between two flange composition faces, consequently can cause to lead the sealing member atress between oil pipe and the gas transformer inhomogeneous, leads to it to have great stress to the phenomenon that leads to the oil leak takes place.
Disclosure of Invention
An object of the utility model is to overcome prior art's is not enough, adapts to reality needs, provides a lead oil pipe joint on the oil-immersed transformer to solve the gas relay on the current oil-immersed transformer and lead the technical problem of the easy oil leak of combination department between the oil pipe.
In order to realize the utility model discloses a purpose, the utility model discloses the technical scheme who adopts does:
designing an oil guide pipe joint on an oil-immersed transformer; the gas relay connector comprises a connector body, wherein the fixed end of the connector body is fixedly connected with an oil guide pipe, and the connecting end of the connector body is connected with a flange connector on a gas relay; the cross section of the joint body is in a T shape which is transversely arranged, a flexible gasket and a rubber sealing ring are arranged in a cavity of the vertical part of the joint body, and the rubber sealing ring and the flexible gasket are coaxially arranged and fixed on the side wall of the flexible gasket; the flange joint is detachably arranged in the cavity of the vertical part of the joint body, and the joint surface of the flange joint is abutted against the side wall of the flexible gasket.
Furthermore, in the design, the inner diameters of at least four rubber sealing rings are respectively and symmetrically fixed on the left side and the right side of the flexible gasket, and the inner diameters of the rubber sealing rings positioned on the same side are sequentially increased or decreased progressively; the side wall of the vertical part of the joint body and the joint surface of the flange joint are respectively provided with annular grooves which are equal in number and correspond to the rubber sealing rings on the same side one by one, and each rubber sealing ring is respectively positioned in the annular groove corresponding to the rubber sealing ring.
Furthermore, in the design, at least two screw rods are further fixed on the side wall in the cavity of the vertical part of the joint body, each screw rod penetrates through the joint surface of the flexible gasket and the flange joint, the end part penetrating through the joint surfaces of the flexible gasket and the flange joint is in threaded connection with a nut, and the flange joint and the joint body are fixed through the screw rods and the nuts.
Furthermore, in the design, an annular channel is arranged on the circumferential inner wall of the cavity of the horizontal part of the joint body, the annular channel is positioned at one end close to the vertical part of the joint body and is communicated with the cavity of the vertical part of the joint body, and an inner connecting pipe is fixed in the annular channel; the inner connecting pipe penetrates through the flexible gasket, extends into the annular channel in the flange joint, and the end part of the inner connecting pipe abuts against the sealing ring positioned in the annular channel of the flange connecting pipe.
Furthermore, in the design, the outer circumferential surface of the joint body is provided with external threads, the outer surface of the flange joint is sleeved with a screw cylinder, and the flange joint is in threaded connection with the joint body through the screw cylinder, so that the flange joint is fixed with the joint body.
The beneficial effect of this design lies in:
1. in this design, the sealing assembly is arranged in an annular groove of the joint body or in an annular channel of the flange joint, and compared with the existing sealing assembly, the sealing assembly is directly arranged between the joint surfaces of the flanges: on the premise of ensuring good sealing effect, the sealing assembly can be effectively prevented from being stressed unevenly and having larger stress, so that the sealing assembly is damaged to reduce the sealing performance, and the oil leakage at the joint of the oil guide pipe and the gas relay is avoided.
2. In the design, the flexible gasket replaces the existing sealing assembly, and the stress applied to the sealing assembly is transferred to the flexible gasket, so that the service life of the sealing assembly is prolonged, and the sealing performance between the oil guide pipe and the gas relay is further enhanced; moreover, the flexible gasket has certain elasticity, and can effectively eliminate part of stress, thereby prolonging the service life of the whole oil guide pipe joint.
3. The present design also has other advantages, which will be provided in the embodiments along with the corresponding structures.
Drawings
Fig. 1 is a schematic structural view of the oil-immersed transformer of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic sectional view of the oil pipe joint of the present invention;
FIG. 4 is a schematic structural view of the flexible rubber gasket and the sealing ring of the present invention;
fig. 5 is a schematic structural view of another embodiment of the present invention;
in the figure: 1. an oil tank; 11. an oil conservator; 12. an oil guide pipe; 2. a gas relay; 21. a flange joint; 3. a connector body; 31. an internal connection pipe; 4. a flexible gasket; 41. a rubber seal ring; 5. a screw; 51. a nut; 6. a screw cylinder.
Detailed Description
The invention will be further described with reference to the following figures and examples:
example 1: an oil guiding pipe joint on an oil immersed transformer is shown in figures 1-4; the connector comprises a connector body 3, wherein the fixed end of the connector body 3 is fixedly connected with an oil guide pipe 12, and the connecting end of the connector body 3 is connected with a flange joint 21 on a gas relay 2.
Furthermore, in the design, the cross section of the joint body 3 is in a transverse T shape, a flexible gasket 4 and a rubber sealing ring 41 are arranged in a cavity of a vertical part of the joint body 3, the rubber sealing ring 41 and the flexible gasket 4 are coaxially arranged and fixed on the side wall of the flexible gasket 4, the number of the rubber sealing rings 41 is at least four, the rubber sealing rings 41 are symmetrically fixed on the left side and the right side of the flexible gasket 4 respectively, and the inner diameters of the rubber sealing rings 41 positioned on the same side are sequentially increased or decreased; the multiple rubber sealing rings 41 on the same side achieve multi-level sealing, so that the sealing effect is improved, the number of the rubber sealing rings 41 is four, and the use cost is saved on the premise of ensuring the sealing performance.
Further, for the flexible gasket 4 and the rubber sealing ring 41 arranged in the cavity of the vertical part of the joint body 3, specifically: in the design, annular grooves which are equal in number and correspond to the two rubber sealing rings 41 on the same side one by one are formed in the side wall of the vertical part of the joint body 3, and one rubber sealing ring 41 corresponding to each annular groove is embedded into each annular groove; therefore, the flexible gasket 4 and the rubber sealing ring 41 are enabled to be fixed in the cavity of the vertical part of the joint body 3, so that the stress applied to the sealing ring is transferred to the flexible gasket 4, the service life of the sealing ring is prolonged, and the sealing performance between the oil guide pipe 12 and the gas relay 2 is further enhanced.
Further, the flange joint 21 in this design is located in the cavity of the vertical portion of the joint body 3, and the joint surface thereof abuts against the side wall of the flexible gasket 4, specifically: in the design, annular grooves which are equal in number and correspond to the two rubber sealing rings 41 on the same side one by one are formed in the joint surface of the flange joint 21, and the two rubber sealing rings 41 close to the flange joint 21 are respectively positioned in the annular grooves corresponding to the two rubber sealing rings.
Further, the flange joint 21 in this design can be dismantled and set up in the cavity of 3 vertical parts of joint body, and is specific: at least two screws 5 are fixed on the side wall in the cavity of the vertical part of the joint body 3 in the design, each screw 5 penetrates through the joint surface of the flexible gasket 4 and the flange joint 21, the end part of the joint surface of the flexible gasket 4 and the flange joint 21 is in threaded connection with a nut 51, and the flange joint 21 is fixed with the joint body 3 through the screw 5 and the nut 51.
Example 2: the same points in this embodiment as those in the above embodiment are not described in detail, and the difference between this embodiment and the above embodiment is: in this embodiment, an annular channel is disposed on the inner circumferential wall of the horizontal portion of the connector body 3, the annular channel is located at one end of the vertical portion of the connector body 3 and is communicated with the vertical portion of the connector body 3, and an inner connecting pipe 31 is fixed in the annular channel.
Furthermore, in this embodiment, an annular channel is also formed on the inner circumferential wall of the cavity of the flange joint 21, the inner connection pipe 31 penetrates through the flexible gasket 4, extends into the annular channel in the flange joint 21, and has an end portion abutting against the sealing ring 41 located in the annular channel of the flange connection pipe, the joint body 3 is communicated with the flange joint 21 through the inner connection pipe 31, and the sealing ring 41 is disposed in the annular channel, so as to prevent the sealing ring 41 from being stressed unevenly and having a large stress, which may cause the sealing ring to be damaged and reduce the sealing performance, and oil leakage occurs at the joint of the oil guide pipe 12 and the gas relay 2 (it should be noted that, in this embodiment, the flexible gasket 4 and the rubber sealing ring 41 are both placed in corresponding positions when the joint body 3 is connected with the flange joint 21).
Further, in this embodiment, an external thread is provided on the circumferential outer surface of the joint body 3, and the outer surface of the flange joint 21 is sleeved with a screw cylinder 6, and the flange joint 21 and the joint body 3 are fixed by screwing the screw cylinder 6 to the joint body 3.
This design is when using: firstly, the flange joint 21 is inserted into the cavity of the vertical part of the joint body 3, and the joint surface of the flange joint 21 is urged to abut against the outer side wall of the flexible gasket 4, at this time, the screw 5 penetrates through the flange joint 21 or the inner connecting pipe 31 and is inserted into the annular channel in the flange joint 21, and the end part of the screw abuts against the sealing ring 41 in the annular channel in the flange joint 21, and then the nut 51 is screwed, and the screw 5 penetrates through the end part of the flange joint 21, or the screw cylinder 6 is screwed on the joint body 3.
The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.
Claims (5)
1. An oil guide pipe joint on an oil immersed transformer comprises a joint body (3), wherein the fixed end of the joint body (3) is fixedly connected with an oil guide pipe (12), and the connecting end of the joint body (3) is connected with a flange joint (21) on a gas relay (2); the method is characterized in that: the cross section of the joint body (3) is transversely arranged in a T shape, a flexible gasket (4) and a rubber sealing ring (41) are arranged in a cavity of the vertical part of the joint body (3), and the rubber sealing ring (41) and the flexible gasket (4) are coaxially arranged and fixed on the side wall of the flexible gasket (4); the flange joint (21) is detachably arranged in a cavity of the vertical part of the joint body (3), and the joint surface of the flange joint is abutted against the side wall of the flexible gasket (4).
2. The oil conducting pipe joint on the oil-immersed transformer according to claim 1, wherein: the inner diameters of the at least four rubber sealing rings (41) are symmetrically fixed on the left side and the right side of the flexible gasket (4) respectively, and the inner diameters of the rubber sealing rings (41) positioned on the same side are sequentially increased or decreased progressively; the side wall of the vertical part of the joint body (3) and the joint surface of the flange joint (21) are respectively provided with annular grooves which are equal in number and correspond to the rubber sealing rings (41) on the same side one by one, and each rubber sealing ring (41) is respectively positioned in the corresponding annular groove.
3. The oil conducting pipe joint on the oil-immersed transformer according to claim 1 or 2, wherein: still be fixed with two at least screws (5) on the lateral wall in the vertical portion cavity of joint body (3), every screw rod (5) all run through the composition surface of flexible packing ring (4), flange joint (21), and the tip threaded connection who runs through flexible packing ring (4), flange joint (21) composition surface has nut (51), fixes flange joint (21) and joint body (3) through this screw rod (5), nut (51).
4. The oil conducting pipe joint on the oil-immersed transformer according to claim 1, wherein: an annular channel is arranged on the circumferential inner wall of the cavity of the horizontal part of the joint body (3), the annular channel is positioned at one end close to the vertical part of the joint body (3) and is communicated with the cavity of the vertical part of the joint body (3), and an inner connecting pipe (31) is fixed in the annular channel; an annular channel is also formed in the circumferential inner wall of the cavity of the flange joint (21), the inner connecting pipe (31) penetrates through the flexible gasket (4), extends into the annular channel in the flange joint (21), and the end part of the inner connecting pipe abuts against a sealing ring (41) located in the annular channel of the flange connecting pipe.
5. The oil conducting pipe joint on the oil-immersed transformer according to claim 1 or 4, wherein: the flange joint is characterized in that external threads are arranged on the circumferential outer surface of the joint body (3), a screw cylinder (6) is sleeved on the outer surface of the flange joint (21), and the flange joint (21) is fixed with the joint body (3) through the screw cylinder (6) and the joint body (3) in a threaded connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920836196.6U CN210106812U (en) | 2019-06-05 | 2019-06-05 | Oil pipe joint on oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920836196.6U CN210106812U (en) | 2019-06-05 | 2019-06-05 | Oil pipe joint on oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106812U true CN210106812U (en) | 2020-02-21 |
Family
ID=69562830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920836196.6U Active CN210106812U (en) | 2019-06-05 | 2019-06-05 | Oil pipe joint on oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210106812U (en) |
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2019
- 2019-06-05 CN CN201920836196.6U patent/CN210106812U/en active Active
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