CN211649416U

CN211649416U - Universal SF6 inflation test joint

Info

Publication number: CN211649416U
Application number: CN201922059482.9U
Authority: CN
Inventors: 高钰; 王楠; 汤雯; 孙静; 张婷; 周鸿肖; 程威; 秦熙
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-09
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a general type SF6 inflation test connects, including taking over, take over middle part surface is provided with the fixed station, take over one end and be air source interface, the takeover other end is pipeline interface, pipeline interface terminal surface is provided with seal ring, be provided with on the fixed station and connect fastener, it includes connecting screw, fixed station connecting piece and pipeline joint spare to connect fastener, the fixed station connecting piece is connected with connecting screw one end, pipeline joint spare cover is established on connecting screw, still be provided with adjusting nut on the connecting screw of pipeline joint spare rear end. The novel butt joint device is simple in structure, convenient to use, capable of being in butt joint with SF6 equipment of various models, wide in application range, capable of improving working efficiency and capable of reducing working complexity.

Description

Universal SF6 inflation test joint

Technical Field

The utility model relates to a test overhauls technical field, especially relates to a general type SF6 aerifys test joint.

Background

Sulfur hexafluoride is a stable gas which is colorless, odorless, nontoxic and noncombustible, SF6 is a strong electronegative gas, molecules of the sulfur hexafluoride are easy to adsorb free electrons to form negative ions with large mass, and the collision ionization process in the gas is weakened, so that the sulfur hexafluoride has high electrical insulation strength which is about 2.5 times of the air insulation strength in a uniform electric field. Since SF6 gas has excellent arc extinguishing and insulating properties and good chemical stability, it was used as an arc extinguishing medium for high voltage circuit breakers since the end of the 50 th century. In the ultra-high voltage and extra-high voltage circuit breakers, SF6 has replaced oil as an arc extinguishing medium and has largely replaced compressed air. From the middle of the 60 s, SF6 is widely used as an insulation medium for high voltage electrical equipment. SF6 gas insulated, fully enclosed switchgear occupies a much smaller area than conventional open high voltage switchgear and its operation is not affected by external weather and environmental conditions, and thus has come into widespread use not only in ultra-high voltage and extra-high voltage power systems, but also in distribution networks (SF6 gas insulated switchgears and ring network power supply units). The SF6 gas insulated pipeline transmission line has the advantages of small medium loss and large transmission capacity, and can be used in high-drop occasions, thus being commonly used for outlet of hydropower stations to replace conventional oil-filled cables. SF6 gas-insulated transformers have the advantage of being fire and explosion proof, and are particularly suitable for use in densely populated areas and for supplying power to high-rise buildings.

At present, in the process of pre-testing or fault emergency repair of power equipment such as an SF6 circuit breaker, a current transformer, a GIS air chamber and the like, works such as SF6 gas charging and discharging, SF6 gas humidity and decomposition product testing, SF6 density relay checking and the like are usually carried out, the works all need to connect the air chamber with a pipeline joint on testing equipment through an inflation test joint so as to achieve the purpose of communication, and due to the fact that SF6 equipment is numerous in brand models and types, the types of the pipeline joint are also different (more than ten types of joints are commonly used, including Siemens, ABB, Alston, Western-style, side-hung, Tai-style, like the Gao and the like), the inflation test joint corresponding to the size of the pipeline joint is required to be frequently replaced in the working process, the corresponding inflation test joints are also very many, the application range is small, the working efficiency is reduced, and the working.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a general type SF6 aerifys test and connects, fine solution above-mentioned problem, its simple structure, convenient to use can dock the SF6 equipment of various models, and application scope is wide, has improved work efficiency, has reduced the work complexity.

The technical scheme of the utility model a general type SF6 inflation test connects, including taking over, take over middle part surface is provided with the fixed station, take over one end and be air source interface, the takeover other end is pipeline interface, pipeline interface terminal surface is provided with seal ring, be provided with on the fixed station and connect fastener, it includes connecting screw, fixed station connecting piece and pipeline joint spare to connect fastener, the fixed station connecting piece is connected with connecting screw one end, pipeline joint spare cover is established on connecting screw, still be provided with adjusting nut on the connecting screw of pipeline joint spare rear end.

Furthermore, a sealing groove is formed in the end face of the pipeline interface, and the sealing washer is placed in the sealing groove and higher than the sealing groove.

Furthermore, two concentric sealing grooves are formed in the end face of the pipeline interface, and sealing gaskets are arranged in the two sealing grooves.

Further, the connecting and fastening devices are two, and the two connecting and fastening devices are symmetrically arranged.

Furthermore, the fixed station connecting piece is clamped at the air source interface side of the fixed station.

Furthermore, one end of the fixed table connecting piece is fixedly connected with the fixed table.

Furthermore, one end of the connecting screw rod is rotatably connected with the fixed platform connecting piece through a pin shaft.

Furthermore, a sleeve of the connecting screw rod is arranged on the fixed station connecting piece, and a stop block is arranged at the far end of the fixed station connecting piece from the fixed station.

Further, the connecting pipe and the fixing table are integrally formed.

Furthermore, the connecting pipe and the fixing platform are made of copper-aluminum alloy, and the sealing washer is made of ethylene propylene diene monomer.

The utility model has the advantages that:

1. the pipeline connector is directly butted with a pipeline joint on the testing equipment, sealing is realized through the sealing washer, and then the test joint and the pipeline joint are fastened and connected through the connecting and fastening device, so that the conventional fastening mode of threaded connection between the joints with adaptive sizes is changed, the structure is simple, the use is convenient, one test joint can be butted with SF6 equipment with various models, the application range is wide, the working efficiency is improved, and the working complexity is reduced;

2. the fixing table connecting piece connected with the fastening device can be fixedly connected with the fixing table and can also be clamped with the fixing table, the pipeline clamping piece is clamped with the protruding portion on the pipeline joint, then the fixing table connecting piece and the pipeline clamping piece are connected through the connecting screw rod, the pipeline clamping piece is locked through the adjusting nut, the test joint and the pipeline joint are locked between the fixing table connecting piece and the pipeline clamping piece, butt joint locking between the test joint and the pipeline joint is completed, the existing threaded connection mode of the pipeline joint is changed, threads are not required to be screwed for multiple times, thread damage is caused, frequent pipeline joint dismounting is avoided, and the safety risk of equipment air leakage caused by damage to a check valve thimble is reduced;

3. when fixed station connecting piece and fixed station fixed connection, can rotate through the pin between connecting screw and the fixed station connecting piece and be connected, when having avoided test joint and pipeline to connect the butt joint, connecting screw's the stopping has made things convenient for workman's operation, and connecting screw can also cup joint on the fixed station connecting piece, makes connecting screw can rise on the fixed station connecting piece and falls the slip to the butt joint that adapts to different height dimension's pipeline connects.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural view of an end face of a pipeline interface according to a first embodiment of the present invention;

fig. 3 is another schematic structural diagram of the end surface of the pipe joint according to the first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a third embodiment of the present invention;

fig. 6 is a schematic structural diagram of a fourth embodiment of the present invention;

in the figure: 1. taking over a pipe; 2. a fixed table; 3. an air source interface; 4. a pipeline interface; 5. a sealing gasket; 6. connecting a screw rod; 7. a fixed table connecting piece; 8. a pipeline clamping piece; 9. adjusting the nut; 10. a pipe joint; 11. a sealing groove; 12. a pin shaft; 13. and a stop block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment I, as shown in fig. 1, the utility model provides a general type SF6 inflation test connects, including taking over 1, take over 1 middle part surface and be provided with fixed station 2, take over 1 one end and be air source interface 3, take over 1 other end and be pipeline interface 4, pipeline interface 4 terminal surface is provided with seal ring 5, be provided with on the fixed station 2 and connect fastener, connect fastener and include connecting screw 6, fixed station connecting piece 7 and pipeline joint spare 8, fixed station connecting piece 7 is connected with connecting screw 6 one end, 8 covers of pipeline joint spare are established on connecting screw 6, still be provided with adjusting nut 9 on the connecting screw 6 of 8 rear ends of pipeline joint spare. And the fixed station connecting piece 7 is clamped at the side of the air source interface 3 of the fixed station 2. The connecting and fastening device can be clamped on the upper part and the lower part of the test connecting pipe 1, the side surfaces of the connecting and fastening device can be the same, and only the test connector and the pipeline connector 10 need to be clamped tightly. The outer wall of the connecting pipe 1 at the side of the air source interface 3 is provided with anti-skid threads to prevent the rubber air pipe sleeved on the connecting pipe 1 from falling off. The pipeline connector 4 is directly butted with a pipeline connector 10 on the testing equipment, sealing is realized through a sealing washer 5, and then the testing connector is fastened and connected with the pipeline connector 10 through a connecting and fastening device, so that the conventional fastening mode of threaded connection between connectors with adaptive sizes is changed, the structure is simple, the use is convenient, one testing connector can be butted with SF6 equipment with various models, the application range is wide, the working efficiency is improved, and the working complexity is reduced; when filling gassing or test operation to SF6 air chamber promptly, can satisfy the joint demand of multiple brand model SF6 electrical equipment to can guarantee the gas tightness between the joint under the circumstances that the check valve switches on, guarantee certain preparation precision, guarantee that the connection process can not cause the damage to equipment body, cause risks such as SF6 reveals.

As shown in fig. 2, a sealing groove 11 is arranged on an end face of the pipeline interface 4, the sealing washer 5 is placed in the sealing groove 11, and the sealing washer 5 is higher than the sealing groove 11. The sealing washer 5 is placed in the sealing groove 11, so that the sealing washer 5 is prevented from falling randomly, and the operation is facilitated. Meanwhile, the sealing washer 5 higher than the sealing groove 11 can be extruded and deformed under the locking pressure of the connecting and fastening device to fill the sealing groove 11, and meanwhile, the sealing effect is ensured by sealing the space between the pipeline connector 4 and the pipeline connector 10.

As shown in fig. 3, two concentric sealing grooves 11 are arranged on the end surface of the pipeline interface 4, sealing washers 5 are arranged in the two sealing grooves 11, and the sealing washers 5 are higher than the sealing grooves 11. Two concentric seal grooves 11 and the seal gasket 5 are equivalently double-sealed, and the sealing effect is better.

Second embodiment, as shown in fig. 4, on the basis of the first embodiment, there are two connecting and fastening devices, and the two connecting and fastening devices are symmetrically arranged. Equivalently, the connecting and fastening device is arranged in the symmetrical direction of the test joint and the pipeline joint 10, so that the fastening force between the test joint and the pipeline joint 10 is uniform and stable, the sealing is tighter, and the leakage of SF6 gas is further avoided; the use safety is ensured.

In the third embodiment, as shown in fig. 5, on the basis of the first embodiment, one end of the fixed table connecting piece 7 is fixedly connected with the fixed table 2. In embodiment one promptly, between fixed station 2 and the connection fastener at the time of out of work, be not fixed together, only when needs fasten, with fixed station connecting piece 7 joint to fixed station 2 one side can, and this embodiment is in the same place fixed station 2 and fixed station connecting piece 7 fixed connection, make it convenient to take, be difficult to lose, the work load has been reduced simultaneously, need not go to fix a position fixed station 2 and fixed station connecting piece 7 during the operation again, it is more simple and convenient to operate, and the work efficiency is improved. When the fixed platform connecting piece 7 is fixedly connected with the fixed platform 2, the connecting screw 6 can be rotationally connected with the fixed platform connecting piece 7 through the pin, so that the blocking of the connecting screw 6 when the test joint is butted with the pipeline joint 10 is avoided, the operation of workers is facilitated,

fixing table connecting piece 7 of connecting fastener can with 2 fixed connection of fixed station, also can with 2 joints of fixed station, pipeline joint spare 8 and the bulge joint on the pipeline connects 10, then connect fixed station connecting piece 7 and pipeline joint spare 8 through connecting screw 6, rethread adjusting nut 9 locks pipeline joint spare 8, be about to test joint and pipeline joint 10 lock between fixed station connecting piece 7 and pipeline joint spare 8, accomplish the butt joint locking between test joint and the pipeline joint 10, the threaded connection mode through pipeline joint 10 self has now been changed, need not twist the screw thread many times, cause the screw thread to damage, regular dismantlement pipeline joint 10 has also been avoided, the safety risk that damages the check valve thimble and causes gas leakage equipment has been reduced.

In the fourth embodiment, as shown in fig. 6, that is, on the basis of the first embodiment, one end of the fixed table connecting piece 7 is fixedly connected with the fixed table 2. One end of the connecting screw rod 6 is sleeved on the fixed station connecting piece 7, and a stop block 13 is arranged at the end, far away from the fixed station 2, of the fixed station connecting piece 7. The connecting screw rod 6 can also be sleeved on the fixed platform connecting piece 7, so that the connecting screw rod 6 can slide up and down on the fixed platform connecting piece 7 to adapt to butt joint of the pipeline joints 10 with different height sizes.

The connecting pipe 1 and the fixing table 2 are integrally formed, and the sealing effect is good. The connecting pipe 1 and the fixing platform 2 are made of copper-aluminum alloy, and the sealing washer 5 is made of ethylene propylene diene monomer.

The utility model can meet the interface requirements of SF6 electrical equipment with various models and sizes; the air tightness of the 1-way connecting pipe is ensured, and the air charging connector of the equipment and the like cannot be damaged; the test connector is convenient to mount and dismount, and compared with the original air inflation test connector, the operation time can be obviously shortened.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. A general type SF6 aerifys experimental joint which characterized in that: including taking over (1), take over (1) middle part surface is provided with fixed station (2), take over (1) one end is air source interface (3), take over (1) other end is pipeline interface (4), pipeline interface (4) terminal surface is provided with seal ring (5), be provided with on the fixed station (2) and connect fastener, connect fastener and include connecting screw (6), fixed station connecting piece (7) and pipeline joint spare (8), fixed station connecting piece (7) are connected with connecting screw (6) one end, pipeline joint spare (8) cover is established on connecting screw (6), still be provided with adjusting nut (9) on connecting screw (6) of pipeline joint spare (8) rear end.

2. The universal SF6 gas charge test joint of claim 1, wherein: pipeline interface (4) terminal surface is provided with seal groove (11), seal ring (5) are placed in seal groove (11), seal ring (5) are higher than seal groove (11).

3. The universal SF6 gas charge test joint of claim 1, wherein: the pipeline connector (4) end face is provided with two concentric sealing grooves (11), and sealing gaskets (5) are arranged in the two sealing grooves (11).

4. The universal SF6 gas charge test joint of claim 1, wherein: the two connecting and fastening devices are symmetrically arranged.

5. The universal SF6 gas charge test joint of claim 1, wherein: the fixed station connecting piece (7) is clamped at the side of the air source interface (3) of the fixed station (2).

6. The universal SF6 gas charge test joint of claim 1, wherein: one end of the fixed table connecting piece (7) is fixedly connected with the fixed table (2).

7. The universal SF6 gas charge test joint of claim 6, wherein: one end of the connecting screw rod (6) is rotatably connected with the fixed platform connecting piece (7) through a pin shaft (12).

8. The universal SF6 gas charge test joint of claim 6, wherein: one end of the connecting screw rod (6) is sleeved on the fixed platform connecting piece (7), and a stop block (13) is arranged at the end, far away from the fixed platform (2), of the fixed platform connecting piece (7).

9. The universal SF6 gas charge test joint of claim 1, wherein: the connecting pipe (1) and the fixed platform (2) are integrally formed.

10. The universal SF6 gas charge test joint of claim 1, wherein: the connecting pipe (1) and the fixed platform (2) are made of copper-aluminum alloy, and the sealing washer (5) is made of ethylene propylene diene monomer.