CN214012824U - Three-station isolating switch pole - Google Patents
Three-station isolating switch pole Download PDFInfo
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- CN214012824U CN214012824U CN202022530139.0U CN202022530139U CN214012824U CN 214012824 U CN214012824 U CN 214012824U CN 202022530139 U CN202022530139 U CN 202022530139U CN 214012824 U CN214012824 U CN 214012824U
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- terminal
- insulating
- isolating switch
- quiet
- move
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Abstract
The utility model relates to a three-station isolating switch utmost point post, upper terminal, quiet terminal, ground terminal set gradually along insulating drive mechanism's transmission direction, the interval between upper terminal, quiet terminal, the ground terminal, move the terminal and install on insulating drive mechanism, move terminal length and be not less than the interval between upper terminal, the quiet terminal, just move terminal length and be not less than the interval between quiet terminal, the ground terminal, insulating drive mechanism drives and moves the terminal and remove the in-process, move the terminal and can communicate with upper terminal, quiet terminal, ground terminal respectively, just move the terminal and not communicate with upper terminal, ground terminal simultaneously. The utility model discloses isolator utmost point post has simple structure, compactness, cooperates vacuum circuit breaker or independent utility in being applicable to indoor outer high tension switchgear, but the modularization installation enables isolator and compromises electrical safety nature and environmental suitability, guarantees equipment or circuit maintenance safe advantage.
Description
Technical Field
The utility model relates to a high tension switchgear electrical equipment field especially relates to a guarantee equipment or circuit maintenance safe high tension switchgear.
Background
The high-voltage isolating switch is an important switching electrical appliance commonly seen in power plants, substations and power transmission and distribution lines, and high-voltage switch equipment, particularly pole-mounted circuit breaker combined products, need to be matched with the isolating switch in addition to a circuit breaker, and form a safety fracture for use when being used as the high-voltage switch equipment or line maintenance, and have a complex structure; in recent years, the isolating switch in the main network is not changed greatly, but with the upgrade of a distribution network system, the development of a one-time and two-time fusion technology is combined with the optimization of the structure of the circuit breaker, the isolating switch is also developed towards a multi-structure direction, and is more and more small, for example, the isolating switch of the ZW68 outdoor vacuum circuit breaker is fixedly sealed in epoxy resin by a static contact and is operated by a sliding connection direct-acting type, the isolating switch is only two stations, has no grounding switch, is integrally arranged in a sealed metal shell, is insulated by dry air, but has smaller electrical distance without the isolating switch and can not be operated independently; in addition, CN201721158601.0 discloses a direct-acting three-position isolation switch device patent, which realizes three-position isolation, but has a problem of relatively complex structure.
Disclosure of Invention
The utility model provides a be suitable for indoor outer the use, enable isolator and compromise electrical safety and environmental suitability's three station isolator utmost point posts to at least, the structure is complicated among the solution prior art, unsuitable modular assembly's problem.
The utility model provides a three-station isolating switch utmost point post, including last terminal, quiet terminal, ground terminal, move terminal, insulating drive mechanism, last terminal, quiet terminal, ground terminal set gradually along insulating drive mechanism's transmission direction, go up the interval between terminal, quiet terminal, the ground terminal, move the terminal and install on insulating drive mechanism, move terminal length and be not less than the interval between last terminal, the quiet terminal, just move terminal length and be not less than the interval between quiet terminal, the ground terminal, insulating drive mechanism drives and moves the terminal and remove the in-process, move the terminal and can communicate with last terminal, quiet terminal, ground terminal respectively, just move the terminal and not communicate with last terminal, ground terminal simultaneously.
Furthermore, the insulation transmission mechanism comprises a screw rod and a screw sleeve, the movable terminal is fixedly connected with the screw sleeve, and the screw sleeve is rotatably arranged on the screw rod.
Furthermore, the screw rod and the screw sleeve are made of insulating plastic materials.
Furthermore, the two ends of the movable terminal are provided with conductive contact fingers, and in the moving process of the movable terminal, the movable terminal can be communicated with the upper terminal, the static terminal and the grounding terminal through the conductive contact fingers.
Furthermore, the three-station isolating switch pole also comprises an insulating cylinder, the upper terminal is connected with the static terminal through the insulating cylinder, and the static terminal is connected with the grounding terminal through the insulating cylinder.
Furthermore, the upper terminal, the static terminal and the grounding terminal are all in a sleeve type structure, and the lead screw is fixed in the sleeve type structure of the upper terminal, the static terminal and the grounding terminal.
Furthermore, the upper terminal, the static terminal, the grounding terminal and the insulating cylinder form a cylinder cavity, a longitudinal guide groove is formed in the cylinder cavity, a longitudinal guide piece is arranged on the surface of the movable terminal, and the longitudinal guide piece is clamped in the longitudinal guide groove.
Furthermore, three station isolator utmost point posts still include the casing, go up terminal, quiet terminal, ground terminal, move terminal, insulating drive mechanism, insulating cylinder and all install in the casing, the casing is the insulating plastics material.
Furthermore, a silicone rubber layer is arranged outside the shell.
Furthermore, the silicone rubber layer can be formed by curing outdoor fixing glue or liquid silicone rubber.
The utility model discloses have simple structure, compactness for prior art, be applicable to cooperation vacuum circuit breaker or independent utility among the indoor outer high tension switchgear, but the modularization installation enables isolator and compromises electrical safety nature and environmental suitability, guarantees equipment or circuit maintenance safe advantage.
Drawings
Fig. 1 is the utility model relates to a three-station isolating switch utmost point post assembly drawing.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The embodiment of the utility model discloses a three-station isolating switch pole, as shown in figure 1, including cylinder, supporting structure, rotating structure, the upper portion of supporting structure is upper terminal 1, and the middle part is equipped with static terminal 10, and the lower part is equipped with ground terminal 11, is equipped with insulating cylinder 6 respectively between upper terminal 1, static terminal 10, ground terminal 11, is equipped with shield cover 5 in the upper and lower both sides of each insulating cylinder, and shield cover 5 switches on with adjacent terminal, the supporting structure is fixed by casing 4, and the middle is the cavity; the rotating structure is that a screw rod 8 is provided with a screw sleeve 7, and a movable terminal 9 is fixed on the screw sleeve 7; the rotating structure is arranged in a cavity in the middle of the support structure.
Optionally, the extending part of the upper terminal 1 extends out of the cylinder for external connection, and the extending part can be provided with a thread hole for convenient connection; the lower part of the upper terminal 1 is a cavity; the static terminal 10 is circular, is used as a current carrier, is provided with an extension part extending out of a cylinder body for being connected with the outside or a circuit breaker, and the extension part can be provided with a thread hole for convenient connection.
Optionally, a conductive contact finger 14 is mounted on the movable terminal 9 for connecting terminals; particularly, the conductive contact fingers 14 can be respectively arranged at the upper part and the lower part of the movable terminal 9; the conductive contact fingers 14 may be beryllium bronze with silver plating on the surface.
Optionally, the movable terminal 9 is cylindrical, a longitudinal guide 13 is sleeved on the upper portion of the movable terminal 9 to prevent the movable terminal 9 from swinging left and right, the longitudinal guide 13 is fixed with the movable terminal 9 through a transverse guide 15 to prevent the movable terminal 9 from rotating, the movable terminal 9 is protected from moving up and down linearly, the longitudinal guide 13 can be made of a plastic material with good toughness, the upper terminal 1, the static terminal 10, the grounding terminal 11 and the insulating cylinder 6 form a cylinder cavity, a longitudinal guide groove is formed in the cylinder cavity, the longitudinal guide 13 is clamped in the longitudinal guide groove, and the movable terminal 9 cannot rotate along with the lead screw 8. The transverse guide 15 can be a metal pin or a hexagon socket stud.
Optionally, the shaft sleeve 3 is mounted on the upper portion of the screw rod 8, a groove is formed in the bottom of the upper terminal 1, the shaft sleeve 3 on the screw rod 8 is mounted at the position of a groove opening in the bottom of the upper terminal 1, the top of the screw rod 8 is placed in the groove, and the screw rod 8 is generally made of plastic materials with good toughness and is connected with the screw sleeve 7 as a rotating piece.
Optionally, three station isolator utmost point posts still include casing 4, and casing 4 is insulating plastics, through the mould, adopts injection molding process to make, undertakes insulating effect, and is great to the dielectric strength of product influence, casing 4 is equipped with quick-operation joint 41, can be connected with quick-operation joint ware (prior art, for technical staff in the field is known, and here is not repeated).
Optionally, a silicone rubber layer 2 is further arranged outside the shell, particularly, outdoor fixing glue or liquid silicone rubber can be selected, and the shell is manufactured through die injection (high-temperature curing), and has the characteristics of hydrophobicity and ultraviolet resistance.
Optionally, the bottom of the column body is provided with a dynamic seal 12, and the dynamic seal is formed by welding stainless steel sheets or made of rubber and used as a spacer to ensure that the interior of the pole is not affected by the external environment.
Optionally, an observation port is provided on the column, and the connection condition of the movable terminal 9, the upper terminal 1, the fixed terminal 10 and the ground terminal 11 can be observed at the position of the observation port.
In particular, transparent insulating materials and cylinder materials can be selected, so that the cylinder is transparent, and the connection condition of the movable terminal 9 and other terminals can be conveniently observed.
Optionally, the upper terminal 1, the ground terminal 11, the fixed terminal 10, and the moving terminal 9 may be silver-plated on the surface of red copper material.
Alternatively, the shield case 5 may be made of a metal material or a conductive plastic material, and is mounted in conduction with all the terminals for optimizing the electric field.
Optionally, the insulating cylinder 6 may be made of insulating plastic, epoxy, ceramic and other materials with excellent insulating property.
When the three-station grounding switch is used, the movable terminal 9 moves up and down to realize three stations, namely isolation separation, isolation clutch and grounding switch-on, and the three stations are used as current carriers. During specific operation, the screw rod 8 rotates, the screw sleeve 7 drives the movable terminal 9 to move up and down, and the conductive contact finger 14 communicates the movable terminal 9, the upper terminal 1 and the static terminal 10, which is an isolation switch-on; the movable terminal 9 moves downwards, the movable terminal 9 is separated from the upper terminal 1 and is completely positioned in the static terminal 10 to be used as an isolation part and a grounding part; the movable terminal 9 moves downward again until it contacts and conducts with the grounding terminal 11, which is a grounding combination.
The utility model discloses can the exclusive use, also can be as module installation, with three station isolator utmost point posts and operating mechanism aggregate erection just become a three station isolator in addition.
The utility model discloses a manufacturing method, splice into an organic whole with upper terminal 1, shield cover 5, insulating cylinder 6, static terminal 10, ground terminal 11 and then put into the mould, pour insulating plastics into the mould, upper terminal 1, shield cover 5, insulating cylinder 6, static terminal 10, ground terminal 11 cladding in the insulating plastic layer, shield cover 5 must be switched on with adjacent terminal, and the centre is the cavity structure, as the supporting structure; then, the silicone rubber layer is injected on the outer surface of the bracket of the three-station isolating switch pole by a mould through an injection process, namely the silicone rubber layer 2 of the three-station isolating switch pole is obtained; the conductive contact finger 14 is mounted on the movable terminal 9, and the longitudinal guide 13 is also mounted on the upper part of the movable terminal 9 and fixed by the transverse guide 15; the screw sleeve 7 is sleeved with the screw rod 8, the movable terminal 9 is sleeved on the screw sleeve 7, the movable terminal 9 is fixed with the screw rod 16, the top of the screw rod 8 is sleeved with the shaft sleeve 3, and the movable terminal is arranged from the bottom of the support structure until the shaft sleeve is inserted into the notch at the bottom of the upper terminal 1; the dynamic seal 12 is mounted at the bottom of the pole column of the three-position isolating switch.
After the technology is adopted, it is right to the utility model discloses carry out the actual detection, specifically as shown in the following table:
| test items | The utility model 1 | The |
Existing isolating switch pole |
| Power frequency withstand voltage | 70 KV | 72 KV | 48 KV |
| Partial discharge | 1.8 PC | 1.5 PC | 4.2 PC |
| Loop resistor | 25μΩ | 26μΩ | 49μΩ |
| Flame-retardant | V0 rating | V0 rating | V2 rating |
| Bending strength | 186MPa | 186MPa | 110MPa |
| Product weight | 9.05 KG | 9.05 |
16 KG |
To sum up, the embodiment of the utility model provides a pair of three-station isolating switch utmost point post is owing to adopt sliding connection direct action formula structure to with injection moulding, the surface is pressed and is annotated outdoor silastic-layer, drives the moving contact motion through lead screw and silk braid cooperation, electrically conducts and touches the finger and realize sound contact turn-on connection, moves the end and uses and install the dynamic seal, compromises electrical safety nature and environmental suitability, guarantees the fail safe nature of product in the outdoor use, has simple structure simultaneously, small in size application scope extensively, advantages such as preparation convenience.
It should be finally noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, it should be understood by those skilled in the art that after reading the present specification, the technical personnel can still modify or equivalently replace the specific embodiments of the present invention, but these modifications or changes do not depart from the scope of the claims of the present application.
Claims (10)
1. The utility model provides a three-station isolator utmost point post, its characterized in that, three-station isolator utmost point post includes terminal, quiet terminal, ground terminal, moves terminal, insulating drive mechanism, last terminal, quiet terminal, ground terminal set gradually along insulating drive mechanism's transmission direction, go up the interval between terminal, quiet terminal, the ground terminal, move the terminal and install on insulating drive mechanism, move terminal length and be not less than the interval between last terminal, the quiet terminal, just move terminal length and be not less than interval between quiet terminal, the ground terminal, insulating drive mechanism drives and moves the terminal and remove the in-process, move the terminal and can communicate with last terminal, quiet terminal, ground terminal respectively, just move the terminal and not communicate with last terminal, ground terminal simultaneously.
2. The three-station isolating switch pole according to claim 1, wherein the insulating transmission mechanism comprises a screw rod and a screw sleeve, the movable terminal is fixedly connected with the screw sleeve, and the screw sleeve is rotatably mounted on the screw rod.
3. The three-station isolating switch pole according to claim 2, wherein the lead screw and the screw sleeve are made of insulating plastic.
4. The three-station isolating switch pole according to claim 1, wherein the two ends of the movable terminal are provided with conductive contact fingers, and the movable terminal can be communicated with the upper terminal, the static terminal and the grounding terminal through the conductive contact fingers in the moving process of the movable terminal.
5. The three-position isolating switch pole according to claim 2, further comprising an insulating cylinder, wherein the upper terminal is connected with the static terminal through the insulating cylinder, and the static terminal is connected with the grounding terminal through the insulating cylinder.
6. The three-position isolating switch pole according to claim 5, wherein the upper terminal, the static terminal and the grounding terminal are all of a sleeve type structure, and the lead screw is fixed in the sleeve type structure of the upper terminal, the static terminal and the grounding terminal.
7. The three-position isolating switch pole according to claim 6, wherein the upper terminal, the static terminal, the grounding terminal and the insulating cylinder form a cylinder cavity, a longitudinal guide groove is formed in the cylinder cavity, a longitudinal guide member is arranged on the surface of the movable terminal, and the longitudinal guide member is clamped in the longitudinal guide groove.
8. The three-position isolating switch pole according to claim 5, further comprising a housing, wherein the upper terminal, the stationary terminal, the ground terminal, the movable terminal, the insulating transmission mechanism and the insulating cylinder are all mounted in the housing, and the housing is made of insulating plastic.
9. The three-position isolating switch pole according to claim 8, wherein a silicone rubber layer is further arranged outside the housing.
10. The three-position isolating switch pole according to claim 9, wherein the silicone rubber layer is formed by curing outdoor fixing glue or liquid silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022530139.0U CN214012824U (en) | 2020-11-05 | 2020-11-05 | Three-station isolating switch pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022530139.0U CN214012824U (en) | 2020-11-05 | 2020-11-05 | Three-station isolating switch pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214012824U true CN214012824U (en) | 2021-08-20 |
Family
ID=77303310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022530139.0U Active CN214012824U (en) | 2020-11-05 | 2020-11-05 | Three-station isolating switch pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214012824U (en) |
-
2020
- 2020-11-05 CN CN202022530139.0U patent/CN214012824U/en active Active
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