CN216597395U - Dry-type self-lubricating conductive loop applied to isolating switch - Google Patents
Dry-type self-lubricating conductive loop applied to isolating switch Download PDFInfo
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- CN216597395U CN216597395U CN202220082676.XU CN202220082676U CN216597395U CN 216597395 U CN216597395 U CN 216597395U CN 202220082676 U CN202220082676 U CN 202220082676U CN 216597395 U CN216597395 U CN 216597395U
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Abstract
The utility model relates to a dry-type self-lubricating conductive loop applied to an isolating switch, which comprises a moving contact and a static contact, wherein a conductive arm connected with the moving contact is hinged on the static contact, a lead-in device is arranged on the moving contact, and the lead-in device is provided with a first through hole vertical to the length direction of the conductive arm; a first graphite lubricating device is arranged in the first through hole, and two ends of the first graphite lubricating device extend out of the first through hole. The utility model discloses the simple structure of device, the low price has stronger stability, uses graphite to replace traditional lubricating grease, has solved traditional lubricating grease and has received the problem that the sand blown by the wind influences life-span and conductivity easily in adverse circumstances to can also use for a long time under the influence of bad weather, prolonged the time of overhauing and the probability of going wrong.
Description
Technical Field
The utility model relates to an electric power tech field specifically is a be applied to isolator's dry-type self-lubricating conductive loop.
Background
In electrical engineering, a disconnector is a switching apparatus for ensuring the safety of operation in high-voltage electrical devices. It is commonly used for isolating and repairing electric current between equipment and breakers, transformers and transmission lines, etc. in a transformer substation for repair or maintenance. The existing conductive arm type disconnecting switch is shown in fig. 1 or fig. 2, and mainly comprises a conductive loop, a transmission part, an insulation part, a base and a ground knife, wherein the conductive loop comprises a conductive arm, a moving contact and a static contact.
The basic requirements of a disconnector require that the disconnector: the outdoor isolating switch has the advantages of simple structure, reliable and flexible action, and reliable switching-on and switching-off operation in a freezing environment. In the isolating switch, in order to keep good conductive performance of the moving contact part and to be in a good state of being separated and combined with the conductive arm at any time, a method of coating grease on two sides of the moving contact is generally adopted, and the grease has the characteristics of lubrication and conductivity. However, in northwest areas with large wind and sand in China, due to the fact that the wind and sand invade all the year round, lubricating grease is mixed with sand, on one hand, the lubricating effect is reduced due to the mixing of the lubricating grease and the sand, the probability of accidents occurring in the switching-on and switching-off operations between the conductive arm and the movable contact is increased, on the other hand, the conductivity of the movable contact is reduced, and the problems that the movable contact is partially overheated and the service life of the contact is shortened are easily caused. And under adverse circumstances, the static contact and the conductive arm may also have the problem of difficult opening and closing due to too much friction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applied to isolator's dry-type self-lubricating conductive loop to thereby solve lubricating grease and took place easily in the great area of sand blown by the wind and mix with the sand and reduced lubricated effect, make between electrically conductive arm and the contact divide, the probability that the switching-on operation accident appears increase and under adverse circumstances, the problem that the static contact and electrically conductive arm also appear rubbing too big difficult opening and shutting. Meanwhile, the problems that the conductivity of the contact is reduced due to the mixing of the lubricating grease and the sand, the contact is easy to overheat, and the service life of the contact is shortened are solved.
The dry self-lubricating conductive loop applied to the isolating switch comprises a moving contact and a fixed contact, wherein a conductive arm connected with the moving contact is hinged to the fixed contact, a lead-in device is arranged on the moving contact, and the lead-in device is provided with a first through hole vertical to the length direction of the conductive arm; a first graphite lubricating device is arranged in the first through hole, and two ends of the first graphite lubricating device extend out of the first through hole.
As right the utility model discloses first graphite lubricating arrangement's injecing, first graphite lubricating arrangement includes first graphite piece, second graphite piece and first spring assembly, first graphite piece, second graphite piece all locate in the first perforation, and connect through first spring assembly between first graphite piece, the second graphite piece, and the one end of second graphite piece is kept away from to first graphite piece to and the one end that first graphite piece was kept away from to the second graphite piece all stretches out outside the first perforation.
As right the utility model discloses the further injecing of first graphite piece and second graphite, the cross-section that first graphite piece and second graphite piece stretch out the part outside first perforation hole all includes a sharp limit and two transition limits of being connected with sharp limit both ends respectively.
As right the utility model discloses an it is another kind to inject, still including locating the inside graphite cake fixing device of first through-hole, graphite cake fixing device links to each other first graphite cake, second graphite cake and first through-hole inner wall respectively.
As the utility model discloses graphite block fixing device's injecing, graphite block fixing device includes second spring assembly and third spring assembly, second spring assembly and third spring assembly install respectively in first dead slot and second dead slot. The first empty groove is formed by a groove formed in the first graphite block and a groove formed in a corresponding position on the leading-in device, and the zooming direction of the second spring device is consistent with the zooming direction of the first spring device. The second empty groove is formed by a groove formed in the second graphite block and a groove formed in a corresponding position on the leading-in device, the zooming direction of the third spring device is consistent with the zooming direction of the first spring device, and two ends of the third spring device are fixedly arranged on two opposite side faces of the second empty groove respectively.
As another limitation of the graphite block fixing device of the present invention, the graphite block fixing device includes a fourth spring device and a fifth spring device. The first graphite block and the second graphite block are in a step shape from one end far away from the first spring device to one end close to the first spring device, the two ends of the fourth spring device are respectively connected to the step of the first graphite block and the inner wall of the first through hole, and the two ends of the fifth spring device are respectively connected to the step of the second graphite block and the inner wall of the first through hole.
As the limit of the leading-in device of the utility model, the material of the leading-in device is a nylon plate.
As right the utility model discloses an it is right that another kind is injectd, still includes pivot piece, pivot piece hug closely in the static contact be close to the one side of moving contact on, still set firmly second graphite lubricating arrangement on pivot piece, second graphite lubricating arrangement's width is the same with electrically conductive arm inner wall width.
As right the utility model discloses the second graphite lubricating arrangement's injecion, second graphite lubricating arrangement includes: the method comprises the following steps: the shell, the third graphite block, the fourth graphite block and the sixth spring device are in a compressed state. The third graphite block and the fourth graphite block are arranged in the shell and are connected through a sixth spring device; one end of the third graphite block far away from the fourth graphite block and one end of the fourth graphite block far away from the third graphite block are both in close contact with the inner side of the conductive arm.
The utility model discloses owing to adopted foretell technical scheme, it compares with prior art, and the technical progress who gains lies in:
(1) the utility model discloses a be applied to dry-type self-lubricating conductive loop of isolator uses graphite to replace traditional lubricating grease to paint the mode of contact, has solved traditional lubricating grease and has received the sand blown by the wind influence easily in adverse circumstances and be difficult for opening and shutting, reduce life-span's problem to can also can use for a long time under adverse weather's influence, prolonged the time of overhauing and reduced the probability that goes wrong, thereby reduce the frequency of overhauing the conductive loop of isolator.
(2) The utility model discloses a be applied to dry-type self-lubricating conductive loop of isolator uses graphite to be main lubricating arrangement, also can alleviate lubricating grease in adverse circumstances and sand mixing back electric conductive property violently descend simultaneously, generates heat serious problem, has reduced the frequency of overhauing the conductive loop of isolator.
(3) The utility model discloses a be applied to dry-type self-lubricating conductive loop of isolator and use simple structure, the device combination is simple, can keep long-time stability in abominable environment, moreover because the low price, thereby simply reduced the cost of overhauing or changing isolator contact part with isolator's the manipulation of being connected.
(4) The utility model discloses a be applied to dry-type self-lubricating conductive loop of isolator has also added second graphite lubricating arrangement at the other end of electrically conductive arm, and second graphite lubricating arrangement makes electrically conductive arm and static contact produce better lubricated effect at the in-process that opens and shuts.
To sum up, the utility model discloses a device is with low costs, has stronger stability, uses graphite to replace traditional lubricating grease, has solved traditional lubricating grease and has received the problem that the sand blown by the wind influences life-span and conductivity ability easily in adverse circumstances to can also use for a long time under the influence of bad weather, prolonged the time of overhauing and reduced the probability that conductive loop goes wrong.
Drawings
FIG. 1 is a perspective view of a prior art isolator switch;
FIG. 2 is a top view of a prior art isolator switch;
fig. 3 is a left side view of a stationary contact in embodiment 1 or 2 of the present invention;
fig. 4 is a front view of embodiment 1 of the present invention;
fig. 5 is a front view of embodiment 2 of the present invention;
fig. 6 is a front view of the stationary contact of fig. 3;
in the figure: 1-an introduction device, 2-a first graphite block, 3-a second graphite block, 4-a first spring device, 5-a movable contact, 6-a first through hole, 7-a second spring device, 8-a third spring device, 9-a fourth spring device, 10-a fifth spring device, 11-a fixed contact, 12-a rotating shaft support block and 13-a second graphite lubricating device.
Detailed Description
The present embodiment provides a dry self-lubricating conductive circuit applied to a disconnector, as shown in fig. 4, including:
the moving contact 5 and the static contact 11 are fixedly arranged on the base, the static contact 11 is hinged with a conductive arm connected with the moving contact 5, and a conductive loop is formed through the connection action of the conductive arm. The moving contact 5 is provided with a lead-in device 1. The guiding device 1 in this embodiment is a guiding sleeve made of a nylon plate, two mounting holes for mounting screws are formed below the front and rear surfaces of the guiding device 1, and two mounting holes are formed in the movable contact 5 and correspond to the mounting holes of the guiding device 1 in position, so that the guiding device 1 and the movable contact 5 are fixed by nuts.
The introducing device 1 is internally provided with a first through hole 6, in the embodiment, the first through hole 6 is in a cuboid shape, the direction of the first through hole 6 is horizontal, the direction of the first through hole is vertical to the length direction of the conductive arm, the inner wall of the first through hole is smooth, and a first graphite lubricating device and a graphite block fixing device are arranged in the first through hole 6. The first graphite lubricating device comprises a first graphite block 2, a second graphite block 3 and a first spring device 4. The first graphite block 2 and the second graphite block 3 are arranged in a first through hole 6 of the leading-in device 1 and connected through a first spring device 4, one end of the first graphite block 2, which is far away from the second graphite block 3, and one end of the second graphite block 3, which is far away from the first graphite block 2, are both positioned outside the first through hole 6, and the graphite block part positioned outside the first through hole 6 is a protrusion formed by a straight line edge and two transition edges as shown in fig. 4.
The first graphite block 2 and the second graphite block 3 are used for wiping a layer of graphite on the part contacting with the inner wall of the conductive arm, so that friction between the conductive arm and the moving contact 5 is reduced, and the graphite has good conductivity and cannot block power transmission between the conductive arm and the moving contact 5.
The first spring device 4 is used for enabling the first graphite block 2 and the second graphite block 3 to approach to the first spring device 4 when the conductive arm touches the first graphite block 2 and the second graphite block 3 in the falling process of the conductive arm, and keeping the outer surfaces of the first graphite block 2 and the second graphite block 3 to be tightly attached to the inner wall of the conductive arm; when the conductive arm is not in contact with the first graphite block 2 or the second graphite block 3, the first graphite block 2 and the second graphite block 3 can restore to the original positions under the action of elasticity.
Graphite block fixing device for first graphite piece 2, second graphite piece 3 provide spacing. The graphite block fixing device comprises a second spring device 7 and a third spring device 8, wherein the second spring device 7 and the third spring device 8 in the embodiment are both formed by a spring and aluminum plates connected with two sides of the spring, and are respectively installed in a first empty groove and a second empty groove as shown in fig. 4. The heights of the aluminum plates on the two sides of the two springs in the embodiment are respectively greater than the heights of the empty grooves of the first graphite block 2 and the second graphite block 3.
The first empty groove is formed by a groove formed in the first graphite block 2 and a groove formed in a corresponding position on the leading-in device 1, and the zooming direction of the second spring device 7 is consistent with the zooming direction of the first spring device 4; the second empty groove is composed of a groove formed in the second graphite block 3 and a groove formed in a corresponding position on the leading-in device 1, and the zooming direction of the third spring device 8 is consistent with the zooming direction of the first spring device 4.
In order to complete the present embodiment, the present embodiment further includes a rotating shaft support block 12, as shown in fig. 3 or fig. 6, the rotating shaft support block 12 is fixedly disposed on one surface of the static contact 11 close to the movable contact 5, and in the present embodiment, the rotating shaft support block 12 and the static contact 11 are fixed by a punching screw. A second graphite lubricating device 13 is fixed on the rotating shaft support block 12. The width of the second graphite lubricating device 13 is the same as that of the inner wall of the conductive arm.
The second graphite lubricating device 13 includes: a third graphite block, a fourth graphite block, a shell (in the embodiment, an L-shaped shell is adopted for convenient installation, and the width of the shell is 2mm less than that of the inner wall of the conductive arm), and a sixth spring device. In the embodiment, the third graphite block and the fourth graphite block are arranged in the shell and are connected through a sixth spring device; one end of the third graphite block, which is far away from the fourth graphite block, and one end of the fourth graphite block, which is far away from the third graphite block, are both in close contact with the inner side of the conductive arm; in this embodiment, one end of the L-shaped housing is fixed on the surface of the stationary contact 11, and the other end is fixed on the rotating shaft support block 12.
The practical embodiment implements the principle:
in the normal state (in the present embodiment, the conductive arm is not in contact with the graphite block), the first graphite block 2 and the second graphite block 3 each have a part of the convex graphite outside the first through-hole 6.
The whole process is divided into two conditions of closing the conducting arm and opening the conducting arm.
When the conductive arm is closed, the conductive arm will first contact the lead-in device 1, the inner wall of the conductive arm being guided by the lead-in device 1 to be mounted down along both sides of the lead-in device 1.
The conductive arm falls the in-process and touches first graphite piece 2 and the protruding portion of second graphite piece 3 outside, and the conductive arm inner wall will give first graphite piece 2 and 3 horizontal directions of second graphite piece and directional first spring assembly 4's power for first graphite piece 2 and second graphite piece 3 hug closely the conductive arm inner wall and retract to 4 directions of first spring assembly, and first graphite piece 2 and second graphite piece 3 are finally all retracted to outer along with leading-in device 1 about outer wall is flat mutually.
In the process that the conductive arm falls down to touch the external convex parts of the first graphite block 2 and the second graphite block 3, the first spring device 4 is in a contracted state, the convex parts at the outer sides of the first graphite block 2 and the second graphite block 3 are both kept in close contact with the inner wall of the conductive arm and have horizontal interaction force along with the whole contact process, so that in the process that the conductive arm falls down to be separated from the first graphite block 2 and the second graphite block 3, a layer of graphite is attached to the part, in contact with the first graphite block 2 or the second graphite block 3, of the inner wall of the conductive arm.
When the conductive arm has fallen into position and is separated from the external raised portion of the first graphite block 2 or the second graphite block 3, the elastic potential energy stored in the first spring means 4 restores the two graphite blocks to the normal state position, and the first spring means 4 also restores to the original length. The inner walls of the two sides of the conductive arm are both attached with a layer of graphite, the conductive arm is lubricated by the graphite when contacting the moving contact 5, and the graphite has good conductivity, so that the electrification performance of the conductive arm and the moving contact 5 cannot be influenced.
When the first graphite block 2 or the second graphite block 3 moves due to external force, the second spring device 7 or the third spring device 8 is compressed, and the second spring 7 and the third spring 8 have compression potential energy, so that acting force is exerted between the first graphite block 2, the second graphite block 3 and the inner wall of the first through hole 6 of the leading-in device 1, and the first graphite block 2 and the second graphite block 3 cannot slide out of the first through hole 6 when being separated from the conductive arm.
Meanwhile, in the opening and closing processes of the conductive arm, the inner wall of the conductive arm at the end of the static contact 11 is respectively contacted with the third graphite block and the fourth graphite block in the second graphite lubricating device 13, and because the sixth spring device is always in a compressed state, the third graphite block and the fourth graphite block are both in close contact with the inner wall of the conductive arm, so that graphite adheres to two sides of the inner wall of the conductive arm near the static contact 11, the friction between the inner wall of the conductive arm and the static contact 11 is reduced, and the lubricating effect is achieved. Due to the conductive properties of graphite, the power transmission between the conductive arm and the stationary contact 11 is not affected. The shell is used for providing protection and limiting for the second graphite lubricating device.
This example provides a dry self-lubricating conductive circuit applied to a disconnector, in which the structure is substantially the same as that of example 1, except that the structure of the graphite fixing device, as shown in particular in fig. 5,
the graphite block fixing device comprises a fourth spring device 9 and a fifth spring device 10 (in the embodiment, the fourth spring device 9 and the fifth spring device 10 are compression springs); the first graphite block 2 and the second graphite block 3 are in a step shape from one end far away from the first spring device 4 to one end close to the first spring device 4, the two ends of the fourth spring device 9 are respectively connected to the step of the first graphite block 2 and the inner wall of the first through hole 6, and the two ends of the fifth spring device 10 are respectively connected to the step of the second graphite block 3 and the inner wall of the first through hole 6. The graphite block fixing device prevents the first graphite block 2 and the second graphite block 3 from sliding out of the first through hole 6.
The structure other than the graphite block fixing device is the same as that in embodiment 1, and the description thereof is omitted.
The utility model is not the best known technology.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. Be applied to isolator's dry-type self-lubricating conductive loop, include moving contact (5), static contact (11) that set up on the base, it has the electrically conductive arm of being connected with moving contact (5) to articulate on static contact (11), be provided with leading-in device (1), its characterized in that on moving contact (5): the leading-in device (1) is provided with a first through hole (6) which is vertical to the length direction of the conductive arm; a first graphite lubricating device is arranged in the first through hole (6), and two ends of the first graphite lubricating device extend out of the first through hole (6).
2. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 1, wherein: the first graphite lubricating device comprises a first graphite block (2), a second graphite block (3) and a first spring device (4), the first graphite block (2) and the second graphite block (3) are all arranged in a first through hole (6), the first graphite block (2) and the second graphite block (3) are connected through the first spring device (4), one end of the second graphite block (3) is far away from the first graphite block (2), and one end of the second graphite block (3) far away from the first graphite block (2) extends out of the first through hole (6).
3. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 2, wherein: the sections of the parts of the first graphite block (2) and the second graphite block (3) extending out of the first through hole (6) respectively comprise a straight line edge and two transition edges connected with the two ends of the straight line edge.
4. The dry self-lubricating conductive circuit applied to the disconnector according to claim 2 or 3, characterized in that: the graphite block fixing device is arranged in the first through hole (6) and respectively connects the first graphite block (2) and the second graphite block (3) with the inner wall of the first through hole (6).
5. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 4, wherein: the graphite block fixing device comprises a second spring device (7) and a third spring device (8), and the second spring device (7) and the third spring device (8) are respectively installed in the first empty groove and the second empty groove; the first empty groove is formed by a groove formed in the first graphite block (2) and a groove formed in a corresponding position on the leading-in device (1), and the zooming direction of the second spring device (7) is consistent with the zooming direction of the first spring device (4); the second empty groove is formed by a groove formed in the second graphite block (3) and a groove formed in a corresponding position on the leading-in device (1), and the scaling direction of the third spring device (8) is consistent with the scaling direction of the first spring device (4).
6. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 4, wherein: the graphite block fixing device comprises a fourth spring device (9) and a fifth spring device (10); the first graphite block (2) and the second graphite block (3) are far away from one end of the first spring device (4) and are in a step shape towards one end close to the first spring device (4), the two ends of the fourth spring device (9) are connected to the step of the first graphite block (2) and the inner wall of the first through hole (6) respectively, and the two ends of the fifth spring device (10) are connected to the step of the second graphite block (3) and the inner wall of the first through hole (6) respectively.
7. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 1, wherein: the material of the leading-in device (1) is a nylon plate.
8. The dry self-lubricating conductive circuit applied to a disconnector according to claim 1, characterized in that: the device also comprises a rotating shaft supporting block (12), wherein the rotating shaft supporting block (12) is fixedly arranged on one surface of the static contact (11) close to the moving contact (5); and a second graphite lubricating device (13) is fixedly arranged on the rotating shaft support block (12), and the width of the second graphite lubricating device (13) is the same as that of the inner wall of the conductive arm.
9. The dry self-lubricating conductive circuit applied to the disconnecting switch according to claim 8, wherein: the second graphite lubricating device (13) comprises: the shell, the third graphite block, the fourth graphite block and the sixth spring device are in a compressed state; the third graphite block and the fourth graphite block are arranged in the shell and are connected through a sixth spring device; one end of the third graphite block far away from the fourth graphite block and one end of the fourth graphite block far away from the third graphite block are both in close contact with the inner side of the conductive arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220082676.XU CN216597395U (en) | 2022-01-13 | 2022-01-13 | Dry-type self-lubricating conductive loop applied to isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220082676.XU CN216597395U (en) | 2022-01-13 | 2022-01-13 | Dry-type self-lubricating conductive loop applied to isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597395U true CN216597395U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220082676.XU Active CN216597395U (en) | 2022-01-13 | 2022-01-13 | Dry-type self-lubricating conductive loop applied to isolating switch |
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| Country | Link |
|---|---|
| CN (1) | CN216597395U (en) |
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- 2022-01-13 CN CN202220082676.XU patent/CN216597395U/en active Active
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Assignee: Hebei Saimo Feishi Biotechnology Co.,Ltd. Assignor: HEBEI YUNIU ELECTRICAL EQUIPMENT Co.,Ltd. Contract record no.: X2022130000016 Denomination of utility model: Dry-type self-lubricating conductive circuit for isolation switch Granted publication date: 20220524 License type: Common License Record date: 20220727 Assignee: HEBEI YUNIU COOKING MACHINERY Co.,Ltd. Assignor: HEBEI YUNIU ELECTRICAL EQUIPMENT Co.,Ltd. Contract record no.: X2022130000014 Denomination of utility model: Dry-type self-lubricating conductive circuit for isolation switch Granted publication date: 20220524 License type: Common License Record date: 20220725 Assignee: Hebei naifa Trading Co.,Ltd. Assignor: HEBEI YUNIU ELECTRICAL EQUIPMENT Co.,Ltd. Contract record no.: X2022130000015 Denomination of utility model: Dry-type self-lubricating conductive circuit for isolation switch Granted publication date: 20220524 License type: Common License Record date: 20220727 |