CN212725130U - Novel SF6Gas-insulated three-station isolating switch - Google Patents
Novel SF6Gas-insulated three-station isolating switch Download PDFInfo
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- CN212725130U CN212725130U CN202021754362.7U CN202021754362U CN212725130U CN 212725130 U CN212725130 U CN 212725130U CN 202021754362 U CN202021754362 U CN 202021754362U CN 212725130 U CN212725130 U CN 212725130U
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Abstract
The utility model relates to a high-voltage apparatus technical field, especially a novel SF6The gas-insulated three-station isolating switch comprises a switch shell, a first fixed contact, a second fixed contact and a third fixed contact which are arranged on the switch shell, and a rotating mechanism which is arranged in the switch shell and provided with an input end matched with the first fixed contact and an output end matched with the second fixed contact or the third fixed contact, wherein the rotating mechanism comprises a first fixed contact and a second fixed contact which are connected with each other to form a rotating mechanismThe rotating mechanism comprises a support conductor at the input end of the rotating mechanism, a moving contact which forms the output end of the rotating mechanism and can be contacted with the second static contact or the third static contact, and a rotating module which is used for connecting the support conductor and the moving contact; the utility model discloses three kinds of mode switch in the circuit loop can be realized.
Description
Technical Field
The utility model relates to a high-voltage apparatus technical field, especially a novel SF6Gas-insulated three-station isolating switch.
Background
The isolating switch is a switch device which is mainly used for isolating a power supply and switching over, communicating and cutting off a small current circuit and has no arc extinguishing function. When the isolating switch is in the separated position, the contacts have insulation distance meeting the specified requirements and obvious disconnection marks; a switching device capable of carrying current in normal loop conditions and current in abnormal conditions (e.g., short circuit) for a specified period of time when in the closed position. The high-voltage isolating switch is generally used as a high-voltage isolating switch, namely an isolating switch with rated voltage of more than 1kV, has high requirement on working reliability, and has great influence on the design, establishment and safe operation of a substation and a power plant.
In a neutral circuit of a neutral point arrester of a transformer, a traditional isolating switch only has two stations, and mode switching in three circuit circuits cannot be realized.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims to provide an isolator that three kinds of mode switch in can realizing circuit return circuit.
The technical scheme of the utility model is realized like this: novel SF6The gas-insulated three-station isolating switch comprises a switch shell, a first fixed contact, a second fixed contact and a third fixed contact which are arranged on the switch shell, and a rotating mechanism which is arranged in the switch shell and is provided with an input end matched with the first fixed contact and an output end matched with the second fixed contact or the third fixed contact, and is characterized in that: the rotating mechanism comprises a support conductor connected with the first fixed contact and forming the input end of the rotating mechanism, a moving contact forming the output end of the rotating mechanism and capable of contacting with the second fixed contact or the third fixed contact, and a rotating part for connecting the support conductor and the moving contactA movable module; the rotating module comprises a first blind hole arranged on the support conductor, a round hole arranged on the moving contact and coaxially arranged with the first blind hole, a rotating main shaft with one end penetrating through the round hole and fixedly connected with the hole bottom of the first blind hole, a second blind hole arranged on the rotating main shaft, a bulge connected with the hole bottom of the second blind hole through a spring and partially exposed out of the second blind hole, and a first clamping groove, a second clamping groove and a third clamping groove which are arranged in the round hole and are arranged at intervals and matched with the bulge.
By adopting the technical scheme, the three-station working mode can be realized by adopting the mode that the second static contact and the third static contact are contacted with the rotating module of the moving contact, namely the moving contact is in a contact communication mode with the second static contact, the moving contact is in a contact communication mode with the third static contact and the moving contact is in a disconnection mode that the moving contact is not communicated with any contact;
the moving contact is fixedly connected with the first blind hole in the support conductor through the rotating main shaft, so that the moving contact rotates by taking the rotating main shaft as an axis, the moving contact is ensured to rotate along the rotating main shaft between the second static contact and the third static contact, and station switching is realized;
the protrusion is arranged outside the second blind hole formed in the rotating main shaft, and the first clamping groove, the second clamping groove and the third clamping groove which are matched with the protrusion are arranged in the round hole of the moving contact, so that the protrusion can be clamped when rotating to the first clamping groove, the second clamping groove and the third clamping groove along the hole wall of the round hole of the moving contact, and the moving contact is positioned at the position opposite to the position where the moving contact is communicated with the second static contact, the third static contact and any contact.
Preferably: the support conductor comprises a support body fixedly connected with the first fixed contact, a slot which is concavely arranged at one end of the support body far away from the first fixed contact, communicated with the first blind hole and used for the movable contact to be inserted, and a first contact finger arranged on the slot wall of the slot.
Through the technical scheme, the support body is provided with the slot for the movable contact to be inserted into, the movable contact is limited, the phenomenon that the movable contact is communicated with the first fixed contact to generate a short circuit due to the fact that the movable contact rotates at an overlarge angle is prevented, and the first contact finger arranged on the slot wall of the slot serves as a contact reinforcement to prevent the movable contact and the first fixed contact from being disconnected due to the fact that a contact surface is not attached when the movable contact is communicated with the first fixed contact.
Preferably: the second static contact and the third static contact respectively comprise a static contact body fixedly connected with the switch shell, a clamping groove arranged on the static contact body and used for the movable contact to move, and a second contact finger arranged in the clamping groove.
According to the technical scheme, the clamping grooves which are arranged on the second static contact and the third static contact and used for moving the moving contact increase the contact area when the moving contact is in contact with the second static contact and the third static contact, the strength of contact connection is ensured, and the second contact fingers arranged in the clamping grooves are used as contact reinforcing parts to prevent the moving contact from being disconnected with the second static contact and the third static contact due to non-attachment of contact surfaces when the moving contact is in contact communication with the second static contact and the third static contact.
Preferably: the first contact finger and the second contact finger both comprise contact finger metal sheets fixedly connected to the groove walls of the slotting or the clamping groove walls and a plurality of groups of contact parts which are distributed on the contact finger metal sheets at intervals and consist of a plurality of metal convex parts; wherein the metal convex parts between the adjacent contact parts are arranged in a staggered way.
Through above-mentioned technical scheme be provided with the metal convex part on the sheetmetal, guarantee when moving contact and fluting cell wall or joint groove cell wall contact, the metal bump can contradict the contact surface of moving contact, has mutual extruded power, prevents that the junction from existing in the gap, improves the compactness of connecting.
Preferably: the moving contact comprises a moving contact body with the round hole, a concave part which is arranged at one end of the moving contact body far away from the round hole in a sunken mode and is positioned on a contact surface with the clamping groove, a plurality of third blind holes which are arranged in the concave part, metal electric conductors which are fixedly connected with hole bottoms of the third blind holes through metal springs and partially expose out of the third blind holes, and metal electric conduction plates which are arranged in the concave part, are fixedly connected with the metal electric conductors and can be in contact with the second contact finger.
Through the technical scheme, the concave part is arranged on the contact surface of the clamping groove arranged on the moving contact body, the metal spring and the metal conductor which are connected and the metal current conducting plate fixedly connected with the metal conductor are arranged on the third blind hole in the concave part, when the moving contact is contacted with the clamping grooves of the second static contact and the third static contact, the metal spring can generate elasticity to jack the metal current conducting plate against the groove wall of the clamping groove, the contact tightness between the groove wall and the metal current conducting plate is enhanced, the contact tightness between the moving contact and the second static contact and the third static contact is enhanced, and the phenomenon of circuit break caused by the fact that the contact surfaces of the moving contact and the second static contact are not attached is prevented.
Preferably: and the end surface of the metal conductive plate, which is contacted with the second contact finger, is fixedly connected with a positioning convex part at intervals for positioning the second contact finger.
Through above-mentioned technical scheme, the location convex part that sets up prevents the second touches the finger and produces the skew, has increased the contact surface of connecting, improves the contact effect.
Preferably: the bulge comprises a bulge body fixedly connected with the spring, an accommodating groove arranged at one end of the bulge body far away from the spring, and a universal ball arranged in the accommodating groove and partially exposed out of the accommodating groove; and limiting concave parts matched with the universal balls are arranged in the first clamping groove, the second clamping groove and the second clamping groove.
Through the technical scheme, the bulge body is provided with the accommodating groove, the accommodating groove is internally provided with the universal ball partially exposed out of the accommodating groove, and the universal ball is in rolling connection with the hole wall of the round hole when the moving contact rotates, so that the abrasion caused by friction is reduced, and the service life of the bulge is prolonged; the inner parts of the first clamping groove, the second clamping groove and the second clamping groove are provided with limiting concave parts matched with the universal balls, when the protruding body enters the first clamping groove, the second clamping groove and the second clamping groove, the universal balls can enter and exit the limiting concave parts to provide a guiding effect for the positioning of the contact, and secondly, after the universal balls can enter and exit the limiting concave parts, the effect of laminating between the protruding body and the first clamping groove, the second clamping groove and the second clamping groove is better, and the positioning accuracy of the moving contact is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a side view of a rotating mechanism according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the section B of the embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 according to an embodiment of the present invention;
fig. 5 is a structural diagram of a first contact finger according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
As shown in fig. 1-3, the utility model discloses a novel SF6Three station isolator of gas insulation, include switch housing 1, locate first static contact 11, second static contact 12, third static contact 13 on the switch housing 1 and locate in the switch housing 1 and have with first static contact 11 complex input and with slewing mechanism 2 of second static contact 12 or third static contact 13 complex output the utility model discloses embodiment the utility model disclosesThe rotating mechanism 2 comprises a support conductor 21 connected with the first fixed contact 11 and forming an input end of the rotating mechanism 2, a movable contact 22 forming an output end of the rotating mechanism 2 and being capable of contacting with the second fixed contact 12 or the third fixed contact 13, and a rotating module B for connecting the support conductor 21 and the movable contact 22; the rotating module B includes a first blind hole 211 disposed on the support conductor 21, a circular hole 100 disposed on the movable contact 22 and coaxially disposed with the first blind hole 211, a rotating main shaft 23 having one end passing through the circular hole 100 and fixedly connected to the bottom of the first blind hole 211, a second blind hole 101 disposed on the rotating main shaft 23, a protrusion 24 connected to the bottom of the second blind hole 101 through a spring T and partially exposed out of the second blind hole 101, and a first locking groove 2210, a second locking groove 2211 and a third locking groove 2212 disposed in the circular hole 100 and arranged at intervals and adapted to the protrusion 24.
By adopting the technical scheme, the three-station working mode can be realized by adopting the mode that the second static contact and the third static contact are contacted with the rotating module of the moving contact, namely the moving contact is in a contact communication mode with the second static contact, the moving contact is in a contact communication mode with the third static contact and the moving contact is in a disconnection mode that the moving contact is not communicated with any contact;
the moving contact is fixedly connected with the first blind hole in the support conductor through the rotating main shaft, so that the moving contact rotates by taking the rotating main shaft as an axis, the moving contact is ensured to rotate along the rotating main shaft between the second static contact and the third static contact, and station switching is realized;
the protrusion is arranged outside the second blind hole formed in the rotating main shaft, and the first clamping groove, the second clamping groove and the third clamping groove which are matched with the protrusion are arranged in the round hole of the moving contact, so that the protrusion can be clamped when rotating to the first clamping groove, the second clamping groove and the third clamping groove along the hole wall of the round hole of the moving contact, and the moving contact is positioned at the position opposite to the position where the moving contact is communicated with the second static contact, the third static contact and any contact.
In the embodiment of the present invention, the support conductor 21 includes a support body 211 fixedly connected to the first static contact 11, a recess located on the support body 211, which is far away from the first static contact 11, and is communicated with the first blind hole 211 and provided for the movable contact 22 inserted into the slot 2100 and located on the slot wall of the slot 2100, the first contact finger 1001.
Through the technical scheme, the support body is provided with the slot for the movable contact to be inserted into, the movable contact is limited, the phenomenon that the movable contact is communicated with the first fixed contact to generate a short circuit due to the fact that the movable contact rotates at an overlarge angle is prevented, and the first contact finger arranged on the slot wall of the slot serves as a contact reinforcement to prevent the movable contact and the first fixed contact from being disconnected due to the fact that a contact surface is not attached when the movable contact is communicated with the first fixed contact.
In the embodiment of the present invention, the second static contact 12 and the third static contact 13 all include and the switch housing 1 is fixed on the static contact body, locate on the static contact body and supply the movable joint groove 121 of the moving contact and install in the second contact finger 1002 in the joint groove 121.
According to the technical scheme, the clamping grooves which are arranged on the second static contact and the third static contact and used for moving the moving contact increase the contact area when the moving contact is in contact with the second static contact and the third static contact, the strength of contact connection is ensured, and the second contact fingers arranged in the clamping grooves are used as contact reinforcing parts to prevent the moving contact from being disconnected with the second static contact and the third static contact due to non-attachment of contact surfaces when the moving contact is in contact communication with the second static contact and the third static contact.
In the embodiment of the present invention, each of the first contact finger 1001 and the second contact finger 1002 includes a contact finger metal sheet 1200 fixedly connected to the groove wall of the slot 2100 or the groove wall of the clamping groove 121, and a plurality of groups of contact portions 1201 spaced apart from each other on the contact finger metal sheet 1200 and formed by a plurality of metal protrusions 1201; wherein the metal protrusions 1201 between adjacent contact portions are all arranged in a staggered manner.
Through above-mentioned technical scheme be provided with the metal convex part on the sheetmetal, guarantee when moving contact and fluting cell wall or joint groove cell wall contact, the metal bump can contradict the contact surface of moving contact, has mutual extruded power, prevents that the junction from existing in the gap, improves the compactness of connecting.
In the embodiment of the present invention, the movable contact 22 includes the movable contact body 220 having the round hole 100, the recess is located the movable contact body 220 is away from one end of the round hole 100 and is located on the contact surface with the clamping groove 121, the concave portion 2200, a plurality of is located the third blind hole 103 in the concave portion, through the metal spring with the hole bottom fixed connection of the third blind hole 103 and the part expose the metal conductor 2201 of the third blind hole 103 and locate in the concave portion 2200 and with each metal conductor 2201 fixed connection and can touch with the second and indicate the metal conductor plate 2202 of 1002 contact.
Through the technical scheme, the concave part is arranged on the contact surface of the clamping groove arranged on the moving contact body, the metal spring and the metal conductor which are connected and the metal current conducting plate fixedly connected with the metal conductor are arranged on the third blind hole in the concave part, when the moving contact is contacted with the clamping grooves of the second static contact and the third static contact, the metal spring can generate elasticity to jack the metal current conducting plate against the groove wall of the clamping groove, the contact tightness between the groove wall and the metal current conducting plate is enhanced, the contact tightness between the moving contact and the second static contact and the third static contact is enhanced, and the phenomenon of circuit break caused by the fact that the contact surfaces of the moving contact and the second static contact are not attached is prevented.
In the embodiment of the present invention, the metal conducting plate 2202 and the end surface contacted by the second contact finger 1002 are fixedly connected to a positioning convex portion 1003 used for positioning the second contact finger 1002 at an interval.
Through above-mentioned technical scheme, the location convex part that sets up prevents the second touches the finger and produces the skew, has increased the contact surface of connecting, improves the contact effect.
In the embodiment of the present invention, the protrusion 24 includes a protrusion body 241 fixedly connected to the spring T, a receiving groove 242 disposed at an end of the protrusion body 241 away from the spring T, and a ball 243 installed in the receiving groove 242 and partially exposed from the receiving groove 242; the first card slot 2210, the second card slot 2211 and the second card slot 2212 are internally provided with a limiting concave part 244 matched with the universal ball 243.
Through the technical scheme, the bulge body is provided with the accommodating groove, the accommodating groove is internally provided with the universal ball partially exposed out of the accommodating groove, and the universal ball is in rolling connection with the hole wall of the round hole when the moving contact rotates, so that the abrasion caused by friction is reduced, and the service life of the bulge is prolonged; the inner parts of the first clamping groove, the second clamping groove and the second clamping groove are provided with limiting concave parts matched with the universal balls, when the protruding body enters the first clamping groove, the second clamping groove and the second clamping groove, the universal balls can enter and exit the limiting concave parts to provide a guiding effect for the positioning of the contact, and secondly, after the universal balls can enter and exit the limiting concave parts, the effect of laminating between the protruding body and the first clamping groove, the second clamping groove and the second clamping groove is better, and the positioning accuracy of the moving contact is improved.
The principle of the example is as follows:
the utility model is used in the transformer neutral point arrester loop, the moving contact rotates, the protrusion on the rotating main shaft is clamped with the first clamping groove, at the moment, the moving contact is communicated with the first static contact, so that the arrester grounding mode is adopted in the transformer neutral point arrester loop;
the moving contact rotates, the protrusion on the rotating main shaft is clamped with the second clamping groove, and the moving contact does not have a communicating point, so that an experiment voltage-resistant position mode is adopted in a neutral point arrester loop of the transformer;
the moving contact rotates, the protrusion on the rotating main shaft is connected with the third clamping groove in a clamping mode, and at the moment, the moving contact is communicated with the second fixed contact, so that a direct grounding mode is adopted in a transformer neutral point arrester loop.
To sum up, the utility model discloses can realize that three kinds of modes switch in transformer neutral point arrester return circuit.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Novel SF6The gas-insulated three-station isolating switch comprises a switch shell, a first fixed contact, a second fixed contact and a third fixed contact which are arranged on the switch shell, and a rotating mechanism which is arranged in the switch shell and is provided with an input end matched with the first fixed contact and an output end matched with the second fixed contact or the third fixed contact, and is characterized in that: the rotating mechanism comprises a support conductor which is connected with the first fixed contact and forms the input end of the rotating mechanism, a moving contact which forms the output end of the rotating mechanism and can be contacted with the second fixed contact or the third fixed contact, and a rotating module which is used for connecting the support conductor and the moving contact; the rotating module comprises a first blind hole arranged on the support conductor, a round hole arranged on the moving contact and coaxially arranged with the first blind hole, a rotating main shaft with one end penetrating through the round hole and fixedly connected with the hole bottom of the first blind hole, a second blind hole arranged on the rotating main shaft, a bulge connected with the hole bottom of the second blind hole through a spring and partially exposed out of the second blind hole, and a first clamping groove, a second clamping groove and a third clamping groove which are arranged in the round hole and are arranged at intervals and matched with the bulge.
2. Novel SF according to claim 16Three station isolator of gas insulation, its characterized in that: the support conductor comprises a support body fixedly connected with the first fixed contact, a slot which is concavely arranged at one end of the support body far away from the first fixed contact, communicated with the first blind hole and used for the movable contact to be inserted, and a first contact finger arranged on the slot wall of the slot.
3. Novel SF according to claim 26Three station isolator of gas insulation, its characterized in that: the second static contact and the third static contact respectively comprise a static contact body fixedly connected with the switch shell, a clamping groove arranged on the static contact body and used for the movable contact to move, and a second contact finger arranged in the clamping groove.
4. Novel SF according to claim 36Three station isolator of gas insulation, its characterized in that: the first contact finger and the second contact finger comprise contact finger metal sheets fixedly connected to the groove walls of the grooves or the groove walls of the clamping grooves and a plurality of groups of contact parts which are distributed on the contact finger metal sheets at intervals and consist of a plurality of metal convex parts; wherein the metal convex parts between the adjacent contact parts are arranged in a staggered way.
5. Novel SF according to claim 36Three station isolator of gas insulation, its characterized in that: the moving contact comprises a moving contact body with the round hole, a concave part which is arranged at one end of the moving contact body far away from the round hole in a sunken mode and is positioned on a contact surface with the clamping groove, a plurality of third blind holes which are arranged in the concave part, metal electric conductors which are fixedly connected with hole bottoms of the third blind holes through metal springs and partially expose out of the third blind holes, and metal electric conduction plates which are arranged in the concave part, are fixedly connected with the metal electric conductors and can be in contact with the second contact finger.
6. Novel SF according to claim 56Three station isolator of gas insulation, its characterized in that: and the end surface of the metal conductive plate, which is contacted with the second contact finger, is fixedly connected with a positioning convex part at intervals for positioning the second contact finger.
7. Novel SF according to any of claims 1 to 36Three station isolator of gas insulation, its characterized in that: the bulge comprises a bulge body fixedly connected with the spring, an accommodating groove arranged at one end of the bulge body far away from the spring, and a universal ball arranged in the accommodating groove and partially exposed out of the accommodating groove; and limiting concave parts matched with the universal balls are arranged in the first clamping groove, the second clamping groove and the second clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021754362.7U CN212725130U (en) | 2020-08-20 | 2020-08-20 | Novel SF6Gas-insulated three-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021754362.7U CN212725130U (en) | 2020-08-20 | 2020-08-20 | Novel SF6Gas-insulated three-station isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725130U true CN212725130U (en) | 2021-03-16 |
Family
ID=74921186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021754362.7U Expired - Fee Related CN212725130U (en) | 2020-08-20 | 2020-08-20 | Novel SF6Gas-insulated three-station isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212725130U (en) |
-
2020
- 2020-08-20 CN CN202021754362.7U patent/CN212725130U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210316 |
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| CF01 | Termination of patent right due to non-payment of annual fee |