CN114171343A - Column box type high-voltage switch with built-in isolating switch - Google Patents
Column box type high-voltage switch with built-in isolating switch Download PDFInfo
- Publication number
- CN114171343A CN114171343A CN202111527416.5A CN202111527416A CN114171343A CN 114171343 A CN114171343 A CN 114171343A CN 202111527416 A CN202111527416 A CN 202111527416A CN 114171343 A CN114171343 A CN 114171343A
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- Prior art keywords
- voltage
- wire inlet
- isolation
- shell
- rod
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- 238000002955 isolation Methods 0.000 claims abstract description 45
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
Abstract
The invention provides a column box type high-voltage switch with a built-in isolating switch, which comprises an upper column shell, a lower box shell and an intermediate fixing plate, wherein the upper column shell, the lower box shell and the intermediate fixing plate are made of insulating materials; the column box type high-voltage switch with the built-in isolating switch combines the advantages of the existing column type high-voltage switch and the existing box type high-voltage switch, is small in size and easy to assemble automatically; the upper column shell and the lower box shell realize effective isolation of high pressure and low pressure, and all components in the upper column shell are mutually insulated; meanwhile, a space is reserved in the upper column shell, so that various sensors can be conveniently mounted.
Description
Technical Field
The invention relates to the technical field of high-voltage switches, in particular to a column box type high-voltage switch with a built-in isolating switch.
Background
The high-voltage switch (or called high-voltage circuit breaker) not only can cut off or close the no-load current and load current in the high-voltage circuit, but also can cut off the overload current and short-circuit current by the action of the relay protection device when the system is in fault, and has rather perfect arc extinguishing structure and enough current breaking capacity.
Existing high-voltage switches are mainly classified into two categories: strut-type high-voltage switches and box-type high-voltage switches.
The strut type high-voltage switch, such as the ZW32 type high-voltage switch, has large volume, and the adopted incoming line terminal, outgoing line terminal or ceramic insulating sleeve and the like are large-volume accessories, so the installation is not easy, the occupied area is large, and the application range is limited; and when the electric signal that needs to gather, can only adopt the external mode of mutual-inductor, the potential safety hazard is big.
The box type high-voltage switch, such as a ZW20 type high-voltage switch, is internally filled with SF6 gas, and has a gas leakage factor; under the action of electric arc and corona, SF6 gas is decomposed to produce low-fluorine compounds which can cause damage to the insulating material, and the low-fluorine compounds are extremely toxic gases and are not environment-friendly.
Therefore, no matter the support type high-voltage switch or the box type high-voltage switch has the defects, a novel high-voltage switch is needed, the function of the high-voltage switch can be realized, and the defects of the support type high-voltage switch and the box type high-voltage switch can be overcome.
Disclosure of Invention
The invention aims to provide a column box type high-voltage switch with a built-in isolating switch, which not only can realize the function of the high-voltage switch, but also can overcome the defects of a column type high-voltage switch and a box type high-voltage switch.
In order to achieve the purpose, the invention adopts the following technical scheme:
a column box type high-voltage switch with a built-in isolating switch comprises an upper column shell, a lower box shell and an intermediate fixing plate, wherein the upper column shell, the lower box shell and the intermediate fixing plate are made of insulating materials;
the high-voltage passage component comprises an incoming line component, an outgoing line component and an isolation component; the wire inlet assembly comprises a wire inlet rod, a high-voltage wire inlet terminal and a wire inlet conductor terminal; the middle part of the wire inlet rod fixedly penetrates through the shell wall of the upper column shell, the upper end of the wire inlet rod is fixedly and electrically connected with a high-voltage wire inlet terminal, and the upper end of the wire inlet rod is fixedly and electrically connected with a wire inlet lead terminal; the outlet assembly comprises a high-voltage outlet terminal, a vacuum arc-extinguishing chamber, an insulating pull rod and a flexible connection, the high-voltage outlet terminal is fixedly and electrically connected with the outlet end of the vacuum arc-extinguishing chamber, a high-voltage separation and combination mechanism consisting of a moving contact and a static contact is arranged in the vacuum arc-extinguishing chamber, the insulating pull rod is used for separating and combining the moving contact and the static contact through mechanical action, the first end of the flexible connection is fixedly and electrically connected with the inlet end of the vacuum arc-extinguishing chamber, and the second end of the flexible connection is connected with the second end of the outlet wire terminal; the isolation assembly comprises an isolation knife and an isolation pull rod; the first end of the isolation knife is fixedly and electrically connected with the wire inlet terminal, the second end of the isolation knife is electrically connected with the wire outlet terminal in a split manner, the first end of the isolation pull rod is in transmission connection with the middle part of the isolation knife, and the second end of the isolation pull rod is in transmission connection with the isolation control mechanism;
the low-pressure control assembly comprises an isolation control mechanism, a spring operating mechanism and a connecting rod; the isolation control mechanism is used for controlling the second end of the isolation knife to be separated from and combined with the outgoing wire terminal through the isolation pull rod, the spring operating mechanism is used for driving the connecting rod to move, and the moving end of the connecting rod penetrates through the middle fixing plate to be fixedly connected with the lower end of the insulation pull rod.
The wire inlet rod is wrapped in the wire inlet rod insulating sleeve in the upper column shell, and the wire inlet rod insulating sleeve and the upper column shell are of an integrally cast structure.
The vacuum arc extinguish chamber is wrapped by the vacuum arc extinguish chamber insulating sleeve, and the vacuum arc extinguish chamber insulating sleeve and the upper column shell are of an integrally cast structure.
The outgoing line assembly further comprises a supporting pull rod, the upper end of the supporting pull rod is fixedly connected with the insulating sleeve of the vacuum arc extinguish chamber, and the lower end of the supporting pull rod is fixedly connected with the middle fixing plate.
The wire outlet assembly further comprises a copper nut, and the copper nut is used for fixedly and electrically connecting the high-voltage wire outlet terminal with a wire outlet end of the vacuum arc-extinguishing chamber.
The high-voltage path assembly further comprises a current transformer, and the current transformer is used for collecting current signals on the wire inlet rod.
The current transformer is wrapped by a current transformer insulating sleeve, and the current transformer insulating sleeve and the upper column shell are of an integral pouring forming structure.
The high-voltage path assembly further comprises a voltage sensor, and the voltage sensor is used for acquiring voltage signals on the wire inlet rod.
Compared with the prior art, the invention has the beneficial effects that:
the column box type high-voltage switch with the built-in isolating switch combines the advantages of the existing column type high-voltage switch and the existing box type high-voltage switch, is small in size and easy to assemble automatically; the upper column shell and the lower box shell realize effective isolation of high pressure and low pressure, and all components in the upper column shell are mutually insulated; meanwhile, a space is reserved in the upper column shell, so that various sensors can be conveniently mounted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1: the invention relates to a column box type high-voltage switch with a built-in isolating switch, which comprises an upper column shell 1, a lower box shell 11 and an intermediate fixing plate 9, wherein the upper column shell 1 is prepared from an insulating material, a high-voltage passage component is arranged in the upper column shell 1, a low-voltage control component is arranged in the lower box shell 11, and the intermediate fixing plate 9 is used for fixing the upper column shell 1 and the lower box shell 11;
the high-voltage passage component comprises an incoming line component, an outgoing line component and an isolation component; the wire inlet assembly comprises a wire inlet rod 17, a high-voltage wire inlet terminal and a wire inlet conductor terminal; the middle part of the wire inlet rod 17 fixedly penetrates through the shell wall of the upper column shell 1, the upper end of the wire inlet rod 17 is fixedly and electrically connected with a high-voltage wire inlet terminal, and the upper end of the wire inlet rod 17 is fixedly and electrically connected with a wire inlet conductor terminal; the outgoing line component comprises a high-voltage outgoing line terminal 2, a vacuum arc extinguish chamber 4, an insulating pull rod 7 and a flexible connection 6, wherein the high-voltage outgoing line terminal 2 is fixedly and electrically connected with an outgoing line end of the vacuum arc extinguish chamber 4, a high-voltage switching mechanism consisting of a moving contact and a fixed contact is arranged in the vacuum arc extinguish chamber 4, the insulating pull rod 7 is used for switching the moving contact and the fixed contact through mechanical action, a first end of the flexible connection 6 is fixedly and electrically connected with an incoming line end of the vacuum arc extinguish chamber 4, and a second end of the flexible connection 6 is connected with a second end of an outgoing line conductor terminal 14; the isolation assembly comprises an isolation knife 16 and an isolation pull rod 13; the first end of the isolation knife 16 is fixedly and electrically connected with the incoming wire terminal, the second end of the isolation knife 16 is electrically connected with the outgoing wire terminal 14 in a separable manner, the first end of the isolation pull rod 13 is in transmission connection with the middle part of the isolation knife 16, and the second end of the isolation pull rod 13 is in transmission connection with the isolation control mechanism 12;
the low-pressure control assembly comprises an isolation control mechanism 12, a spring operating mechanism 10 and a connecting rod; the isolation control mechanism 12 is used for controlling the second end of the isolation knife 16 to be separated from and combined with the outgoing wire terminal 14 through the isolation pull rod 13, the spring operating mechanism 10 is used for driving the connecting rod to act, and the acting end of the connecting rod penetrates through the middle fixing plate 9 and is fixedly connected with the lower end of the insulation pull rod 7.
The column box type high-voltage switch with the built-in isolating switch combines the advantages of the existing column type high-voltage switch and the existing box type high-voltage switch, is small in size and easy to assemble automatically; the upper column shell 1 and the lower box shell 11 realize effective isolation of high pressure and low pressure, and all components in the upper column shell 1 are mutually insulated; meanwhile, a space is reserved in the upper column shell 1, so that various sensors can be conveniently installed.
Preferably: wire inlet rod 17 all wrap up the insulating cover of wire inlet rod 17 in the inside part of upper column shell 1, wire inlet rod 17 insulating cover and upper column shell 1 pour the shaping structure as an organic whole, the insulating properties between the inside each non-electric subassembly of upper column shell 1 has been guaranteed in the setting of the insulating cover of wire inlet rod 17.
Preferably: vacuum interrupter 4 outside wrap up silicon rubber sleeve 5, silicon rubber sleeve 5 and upper column shell 1 pour the shaping structure as an organic whole, the insulating properties between the inside each non-electric subassembly of upper column shell 1 has been guaranteed to the setting of silicon rubber sleeve 5.
Preferably: the wire outlet assembly further comprises a supporting pull rod 8, the upper end of the supporting pull rod 8 is fixedly connected with the silicone rubber sleeve 5, and the lower end of the supporting pull rod 8 is fixedly connected with a middle fixing plate 9; the arrangement of the supporting pull rod 8 can effectively support the silicon rubber sleeve 5.
Preferably: the outgoing line assembly further comprises a copper nut 3, the copper nut 3 is used for fixing and electrically connecting the high-voltage outgoing line terminal 2 with the outgoing line end of the vacuum arc extinguish chamber 4, the high-voltage outgoing line terminal 2 is convenient to install and replace, and the outgoing line assembly is convenient and practical.
Preferably: the high-voltage path assembly further comprises a current transformer 18, and the current transformer 18 is used for collecting current signals on the wire inlet rod 17; compared with the existing strut-type high-voltage switch, the incoming line terminal and the outgoing line terminal of the strut-type high-voltage switch are exposed outside, so that when the current transformer 18 is arranged, the mode of externally hanging the current transformer 18 can be adopted, potential safety hazards exist, the interference of the external environment is easy to occur, and the measurement result is unreliable.
Preferably: the current transformer 18 is wrapped by the current transformer 18 insulation sleeve, the current transformer 18 insulation sleeve and the upper column shell 1 are of an integral pouring forming structure, and the arrangement of the current transformer 18 insulation sleeve ensures the insulation performance among all non-electric components in the upper column shell 1.
Preferably: the high-voltage path assembly further comprises a voltage sensor 15, wherein the voltage sensor 15 is used for acquiring a voltage signal on the wire inlet rod 17; compared with the existing strut-type high-voltage switch, the incoming line terminal and the outgoing line terminal of the strut-type high-voltage switch are both exposed outside, so that when the voltage sensor 15 is arranged, the external hanging mode of the voltage sensor 15 can be only adopted, potential safety hazards exist, the external environment interference is easy to cause, and the measurement result is unreliable.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a built-in isolator's post box-like high voltage switch which characterized in that: the high-voltage switch cabinet comprises an upper column shell, a lower box shell and an intermediate fixing plate, wherein the upper column shell is made of insulating materials, a high-voltage passage component is arranged in the upper column shell, a low-voltage control component is arranged in the lower box shell, and the intermediate fixing plate is used for fixing the upper column shell and the lower box shell;
the high-voltage passage component comprises an incoming line component, an outgoing line component and an isolation component; the wire inlet assembly comprises a wire inlet rod, a high-voltage wire inlet terminal and a wire inlet conductor terminal; the middle part of the wire inlet rod fixedly penetrates through the shell wall of the upper column shell, the upper end of the wire inlet rod is fixedly and electrically connected with a high-voltage wire inlet terminal, and the upper end of the wire inlet rod is fixedly and electrically connected with a wire inlet lead terminal; the outlet assembly comprises a high-voltage outlet terminal, a vacuum arc-extinguishing chamber, an insulating pull rod and a flexible connection, the high-voltage outlet terminal is fixedly and electrically connected with the outlet end of the vacuum arc-extinguishing chamber, a high-voltage separation and combination mechanism consisting of a moving contact and a static contact is arranged in the vacuum arc-extinguishing chamber, the insulating pull rod is used for separating and combining the moving contact and the static contact through mechanical action, the first end of the flexible connection is fixedly and electrically connected with the inlet end of the vacuum arc-extinguishing chamber, and the second end of the flexible connection is connected with the second end of the outlet wire terminal; the isolation assembly comprises an isolation knife and an isolation pull rod; the first end of the isolation knife is fixedly and electrically connected with the wire inlet terminal, the second end of the isolation knife is electrically connected with the wire outlet terminal in a split manner, the first end of the isolation pull rod is in transmission connection with the middle part of the isolation knife, and the second end of the isolation pull rod is in transmission connection with the isolation control mechanism;
the low-pressure control assembly comprises an isolation control mechanism, a spring operating mechanism and a connecting rod; the isolation control mechanism is used for controlling the second end of the isolation knife to be separated from and combined with the outgoing wire terminal through the isolation pull rod, the spring operating mechanism is used for driving the connecting rod to move, and the moving end of the connecting rod penetrates through the middle fixing plate to be fixedly connected with the lower end of the insulation pull rod.
2. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 1, wherein: the wire inlet rod is wrapped in the wire inlet rod insulating sleeve in the upper column shell, and the wire inlet rod insulating sleeve and the upper column shell are of an integrally cast structure.
3. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 2, wherein: the vacuum arc extinguish chamber is wrapped by the vacuum arc extinguish chamber insulating sleeve, and the vacuum arc extinguish chamber insulating sleeve and the upper column shell are of an integrally cast structure.
4. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 3, wherein: the outgoing line assembly further comprises a supporting pull rod, the upper end of the supporting pull rod is fixedly connected with the insulating sleeve of the vacuum arc extinguish chamber, and the lower end of the supporting pull rod is fixedly connected with the middle fixing plate.
5. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 4, wherein: the wire outlet assembly further comprises a copper nut, and the copper nut is used for fixedly and electrically connecting the high-voltage wire outlet terminal with a wire outlet end of the vacuum arc-extinguishing chamber.
6. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 5, wherein: the high-voltage path assembly further comprises a current transformer, and the current transformer is used for collecting current signals on the wire inlet rod.
7. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 6, wherein: the current transformer is wrapped by a current transformer insulating sleeve, and the current transformer insulating sleeve and the upper column shell are of an integral pouring forming structure.
8. The column box type high-voltage switch with the built-in isolating switch as claimed in claim 6, wherein: the high-voltage path assembly further comprises a voltage sensor, and the voltage sensor is used for acquiring voltage signals on the wire inlet rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111527416.5A CN114171343A (en) | 2021-12-15 | 2021-12-15 | Column box type high-voltage switch with built-in isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111527416.5A CN114171343A (en) | 2021-12-15 | 2021-12-15 | Column box type high-voltage switch with built-in isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114171343A true CN114171343A (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111527416.5A Pending CN114171343A (en) | 2021-12-15 | 2021-12-15 | Column box type high-voltage switch with built-in isolating switch |
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|---|---|
| CN (1) | CN114171343A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116130284A (en) * | 2023-02-20 | 2023-05-16 | 上海启腾电气股份有限公司 | Holographic sensing type column vacuum circuit breaker system |
-
2021
- 2021-12-15 CN CN202111527416.5A patent/CN114171343A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116130284A (en) * | 2023-02-20 | 2023-05-16 | 上海启腾电气股份有限公司 | Holographic sensing type column vacuum circuit breaker system |
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Effective date of registration: 20231125 Address after: No.85, Songshan South Road, Erqi District, Zhengzhou City, Henan Province Applicant after: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Applicant after: Henan Jiuyu Tenglong Information Engineering Co.,Ltd. Applicant after: Xuchang yushengchang Electric Co.,Ltd. Address before: 450000 No. 1 Building, No. 5 Ankang Road, Erqi District, Zhengzhou City, Henan Province Applicant before: Henan Jiuyu Tenglong Information Engineering Co.,Ltd. Applicant before: Xuchang yushengchang Electric Co.,Ltd. |
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