CN110768109A - Detachable isolated fracture bus - Google Patents
Detachable isolated fracture bus Download PDFInfo
- Publication number
- CN110768109A CN110768109A CN201911108506.3A CN201911108506A CN110768109A CN 110768109 A CN110768109 A CN 110768109A CN 201911108506 A CN201911108506 A CN 201911108506A CN 110768109 A CN110768109 A CN 110768109A
- Authority
- CN
- China
- Prior art keywords
- conductor
- hole
- detachable
- fracture
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a detachable isolated fracture bus, which comprises a shell; the shell is T-shaped, the upper end and the lower end of the shell are provided with openings, the upper end opening and the lower end opening are respectively provided with an upper insulating basin and a lower insulating basin, and the side wall of the shell is provided with an inflation hole and a hand hole; an upper conductor, a middle conductor, a contact conductor and a lower conductor are sequentially arranged between the upper insulating basin and the lower insulating basin from top to bottom; the upper conductor, the middle conductor, the contact conductor and the lower conductor are coaxial, a hole I for accommodating the contact conductor is formed in the upper conductor and the middle conductor, one end of the contact conductor is located in the hole I, and the contact conductor can move up and down along the opening direction of the hole I to achieve the conduction and disconnection of a bus. The detachable isolated fracture bus has low maintenance cost; low cost, convenient operation, high disassembly efficiency and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of high-voltage power, relates to high-voltage switch equipment in a high-voltage power system, and particularly relates to a detachable isolation fracture bus for connecting gas insulated metal-enclosed switch equipment (GIS) with a Voltage Transformer (VT) and a Lightning Arrester (LA).
Background
GIS (Gas Insulated metal-enclosed Switchgear, SF6 Gas Insulated Switchgear) has been widely used in substations in recent years because of its many advantages, such as compact structure, small floor space, strong environmental tolerance, safe operation, and good appearance. All the compartments are electrically and organically combined through the main bus, and the measurement and maintenance compartments are widely used.
At present, after GIS field installation is accomplished or is overhauld, when carrying out insulation test, there are two kinds of forms as follows:
(1) the VT and the LA are not installed, and the VT and the LA are installed after the test is finished, so that the assembly workload is increased;
(2) VT, LA are from taking isolating device, like the three-phase arrester of taking isolating device that CN 207149447U disclosed, it makes first isolating device, second isolating device and third isolating device rotate in step through transmission assembly's rotation, thereby make first arrester, second arrester and third arrester realize switch on and isolation state in step, the three-phase is box area isolation fracture pot-type arrester altogether that CN 208820348U disclosed, be provided with linkage structure in it, solve the technical problem about arrester withstand voltage test in the totally closed combined electrical apparatus, nevertheless because the arrester is from taking isolating device, the foreign matter that drops when transmission assembly moves has an influence to the insulating properties of arrester, and transmission assembly has the life-span requirement, need to change together with the arrester during the change, cost of maintenance is higher.
Therefore, the development of the bus device for isolating the GIS and the voltage transformer or the lightning arrester, which is convenient to operate and high in disassembly efficiency, has practical significance.
Disclosure of Invention
The invention aims to overcome the defects of high maintenance cost, complex operation steps, low working efficiency and high use cost of a VT/LA self-contained isolation device in the prior art, and provides a bus device for connecting a GIS and a voltage transformer or a lightning arrester, which has low cost, convenient operation and high disassembly efficiency. By using the detachable isolating fracture bus, after GIS field installation or maintenance is finished, when an insulation test is carried out, a VT (voltage transformer) and an LA (lightning arrester) do not need to be detached, an isolating switch or an isolating device does not need to be added between the GIS and the VT or the LA, direct influence on the lightning arrester when a transmission assembly acts or is abnormal does not exist, and the connection or disconnection between the GIS and the VT or the LA can be conveniently realized only by adjusting the position of a contact conductor in the detachable isolating fracture bus.
In order to achieve the purpose, the invention provides the following technical scheme:
a detachable isolated fracture bus comprises a shell;
the shell is T-shaped, the upper end and the lower end of the shell are provided with openings, the upper end opening and the lower end opening are respectively provided with an upper insulating basin and a lower insulating basin, and the side wall of the shell is provided with an inflation hole and a hand hole;
an upper conductor, a middle conductor, a contact conductor and a lower conductor are sequentially arranged between the upper insulating basin and the lower insulating basin from top to bottom; the upper conductor, the middle conductor, the contact conductor and the lower conductor are coaxial, a hole I for accommodating the contact conductor is formed in the upper conductor and the middle conductor, one end of the contact conductor is located in the hole I, and the contact conductor can move up and down along the opening direction of the hole I to achieve the conduction and disconnection of a bus.
After the detachable isolating fracture bus is installed or overhauled on the GIS field, when an insulation test is carried out, VT and LA do not need to be detached, and an isolating switch or a built-in isolating device does not need to be added between the GIS and the VT and LA, so that the connection and disconnection of a circuit can be realized.
The contact conductor of the detachable isolated fracture bus adopts a movable design, and the upper conductor and the middle conductor are internally provided with the holes I, so that the contact conductor can be movably connected or disconnected with the middle conductor and the lower conductor.
As a preferred technical scheme:
according to the detachable isolating fracture bus, the meter valve is mounted on the air charging hole, and SF6 gas in the shell is recovered through the meter valve or SF6 gas is charged into the shell.
The detachable isolating fracture bus has the advantages that the hand hole is provided with the molecular sieve cover plate (the cover plate capable of containing the molecular sieve) so as to isolate the shell from being communicated with the outside.
According to the detachable isolating fracture bus, the upper conductor is fixedly connected with the upper insulating basin, and the upper conductor is covered with the upper shielding cover connected with the upper conductor.
According to the detachable isolating fracture bus, the upper end of the lower conductor is provided with the blind hole II matched with the contact conductor and used for fixing the contact conductor, the contact conductor and the lower conductor are prevented from being accidentally separated in a conduction state, the lower conductor is fixedly connected with the lower insulating basin through the transition conductor, and the lower conductor is covered with the lower shielding cover connected with the lower conductor. The scope of the present invention is not limited thereto, and the lower conductor may be directly and fixedly connected to the lower insulating tub.
According to the detachable isolating fracture bus, the middle conductor is covered with the middle shielding cover connected with the middle conductor, the middle conductor and the lower conductor are respectively provided with the spring contacts, the spring contacts have certain clamping force on the contact conductors so as to fix the contact conductors to a certain extent and prevent the contact conductors from being separated accidentally, and meanwhile, the spring contacts play a role in conductive connection and transmit GIS voltage to PT/LA.
The detachable isolating fracture bus comprises an upper conductor, a middle conductor and a blind hole I, wherein the blind hole I comprises a blind hole III of the upper conductor and a through hole IV of the middle conductor, the blind hole III and the through hole IV are communicated with each other and are coaxial, and the inner diameter of the blind hole III is larger than that of the through hole IV. The specific form of the hole I of the present invention is not limited thereto, and those skilled in the art can adjust it according to the actual situation.
The blind hole III, the through hole IV and the blind hole II are coaxial.
The detachable isolating fracture bus bar is fixedly connected through bolts or welded. The specific connection form of the present invention is not limited to this, and those skilled in the art can adjust the connection form according to actual needs, and forms such as riveting, etc. can also be applied to the present invention.
A detachable isolating break busbar as described above, said aperture I being able to fully accommodate a contact conductor; the lower part of the middle conductor is provided with a transverse through hole, a shaft pin is arranged in the transverse through hole, and the position of the contact conductor can be fixed by controlling the shaft pin. The contact conductor is completely retracted into the hole I, a shaft pin is inserted into the transverse through hole at the moment, and the shaft pin blocks the contact conductor, so that the contact conductor can be fixed in the hole I to disconnect the contact conductor from the lower conductor (the detachable isolating fracture bus is in a disconnected state). The scope of the present invention is not limited thereto, and other ways of fixing (limiting) the position of the contact conductor may be adopted, which is only a feasible solution, and those skilled in the art can design a suitable fixing (limiting) structure according to practical situations.
Has the advantages that:
(1) the detachable isolated fracture bus is not completely fixed with other components (VT/LA), and when the VT/LA is damaged, the VT/LA does not need to be replaced together, so that the maintenance cost is low;
(2) the detachable isolated fracture bus has the advantages of low cost, convenience in operation, high detaching efficiency and great application prospect.
Drawings
FIG. 1 is a schematic view of a detachable isolated break bus bar of the present invention in a normal operating condition;
FIG. 2 is a schematic view of the field test state of a detachable isolated fracture bus of the present invention;
the device comprises a shell, 21 parts of an upper insulating basin, 22 parts of a lower insulating basin, 3 parts of an upper shielding case, 4 parts of an upper conductor, 5 parts of a middle conductor, 6 parts of a middle shielding case, 7 parts of a shaft pin, 8 parts of a spring contact, 9 parts of a contact conductor, 10 parts of a molecular sieve cover plate, 11 parts of a transition conductor, 12 parts of a lower shielding case, 13 parts of a lower conductor, 14 parts of a meter valve, 15 parts of a hole I, 151 parts of a blind hole III, 152 parts of a through hole IV and 16 parts of a blind hole II.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings.
A detachable isolated fracture busbar, as shown in fig. 1, comprises a housing 1;
the casing 1 is T-shaped, the upper end and the lower end of the casing are provided with openings, the upper end opening and the lower end opening are respectively provided with an upper insulating basin 21 and a lower insulating basin 22, the side wall of the casing is provided with an inflation hole and a hand hole, the inflation hole is provided with a meter valve 14, and the hand hole is provided with a molecular sieve cover plate 10;
an upper conductor 4, a middle conductor 5, a contact conductor 9, a lower conductor 13 and a transition conductor 11 are sequentially arranged between the upper insulating basin 21 and the lower insulating basin 22 from top to bottom; the upper conductor 4, the middle conductor 5, the contact conductor 9 and the lower conductor 13 are coaxial, the upper conductor 4 is provided with a blind hole III 151, the middle conductor 5 is provided with a through hole IV 152, the blind hole III 151 and the through hole IV 152 are coaxial and are communicated with each other to form a hole I15, the inner diameter of the blind hole III 151 is larger than that of the through hole IV 152, one end of the contact conductor 9 is positioned in the hole I15, the hole I15 can completely contain the contact conductor 9, and the contact conductor 9 can move up and down along the opening direction of the hole I15 to realize the conduction and disconnection of a bus;
the upper conductor 4 is fixedly connected with the upper insulating basin 21 through a bolt, the upper conductor 4 is covered with an upper shielding cover 3 which is connected with the upper conductor through a bolt, the lower part of the middle conductor 5 is provided with a transverse through hole, a shaft pin 7 is arranged in the transverse through hole, the position of the contact conductor can be fixed through a control shaft pin, the middle conductor 5 is covered with a middle shielding cover 6 which is connected with the middle conductor 5 through a bolt, the transition conductor 11 is fixedly connected with the lower insulating basin 22 through a bolt, the lower conductor 13 is covered with a lower shielding cover 12 which is connected with the lower conductor 13 through a bolt, the upper end of the lower conductor 13 is provided with a blind hole II 16 which is matched with the contact conductor 9, the middle conductor 5 and the lower conductor 13 are respectively provided with a spring contact 8, and the blind hole III 151, a through hole IV 152.
The steps of disassembling the detachable isolated fracture bus of the invention are as follows (the following operations are all carried out from the hand hole of the side wall of the shell):
1) recovering SF6 gas in a detachable isolated fracture bus shell through a meter valve;
2) removing the molecular sieve cover plate 10, unscrewing the fastening screw of the middle shielding case 6, and pushing the middle shielding case 6 downwards;
3) removing the fixing screw on the right side of the shaft pin 7, moving the shaft pin 7 to the left side, and holding the contact conductor 9 by hand;
4) the contact conductor 9 is moved upwards and slowly (attention is paid to observing a mounting hole on the lower side of the contact conductor 9) to a proper position, the shaft pin 7 is moved towards the right side to fix the contact conductor 9 through the mounting hole, the middle shielding case 6 is installed, the molecular sieve cover plate 10 is sealed, SF6 gas is filled, at the moment, the isolated fracture bus can be detached as shown in figure 2, and then the GIS field insulation test can be carried out.
The steps of installing the detachable isolated fracture busbar of the present invention are the reverse of the above-described steps of detaching.
The verification proves that the detachable isolated fracture bus is not completely fixed with other parts (VT/LA), and when the VT/LA is damaged, the detachable isolated fracture bus does not need to be replaced together, so that the maintenance cost is low; low cost, convenient operation, high disassembly efficiency and wide application prospect.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the principles and spirit of the invention.
Claims (10)
1. A detachable isolated fracture bus is characterized by comprising a shell;
the shell is T-shaped, the upper end and the lower end of the shell are provided with openings, the upper end opening and the lower end opening are respectively provided with an upper insulating basin and a lower insulating basin, and the side wall of the shell is provided with an inflation hole and a hand hole;
an upper conductor, a middle conductor, a contact conductor and a lower conductor are sequentially arranged between the upper insulating basin and the lower insulating basin from top to bottom; the upper conductor, the middle conductor, the contact conductor and the lower conductor are coaxial, a hole I for accommodating the contact conductor is formed in the upper conductor and the middle conductor, one end of the contact conductor is located in the hole I, and the contact conductor can move up and down along the opening direction of the hole I to achieve the conduction and disconnection of a bus.
2. The detachable isolating fracture busbar of claim 1, wherein said inflation port is fitted with a gauge valve.
3. The detachable isolated fracture busbar of claim 1, wherein said hand hole is fitted with a molecular sieve cover plate.
4. The detachable isolated fracture bus of claim 1, wherein the upper conductor is fixedly connected to the upper insulating basin, and the upper conductor is covered by an upper shield connected to the upper conductor.
5. The detachable isolating fracture bus according to claim 4, wherein the upper end of the lower conductor is provided with a blind hole II matched with the contact conductor, the lower conductor is fixedly connected with the lower insulating basin through a transition conductor, and a lower shielding cover connected with the lower conductor is covered on the lower conductor.
6. A detachable isolated fracture busbar according to claim 5, wherein said intermediate conductor is externally covered with an intermediate shield connected to said intermediate conductor, and said intermediate conductor and said lower conductor are provided with spring contacts therein, respectively.
7. The detachable isolating fracture busbar according to claim 5, wherein said hole I comprises a blind hole III of the upper conductor and a through hole IV of the intermediate conductor, said blind hole III and through hole IV being in communication and coaxial with each other, the inner diameter of the blind hole III being greater than the inner diameter of the through hole IV.
8. The detachable isolating fracture busbar according to claim 7, wherein said blind hole III, through hole IV and blind hole II are coaxial.
9. The detachable isolated fracture busbar of claim 8, wherein said connection is by bolting or welding.
10. The detachable isolating fracture busbar of claim 1, wherein said hole I is capable of fully receiving a contact conductor; the lower part of the middle conductor is provided with a transverse through hole, a shaft pin is arranged in the transverse through hole, and the position of the contact conductor can be fixed by controlling the shaft pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911108506.3A CN110768109A (en) | 2019-11-13 | 2019-11-13 | Detachable isolated fracture bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911108506.3A CN110768109A (en) | 2019-11-13 | 2019-11-13 | Detachable isolated fracture bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110768109A true CN110768109A (en) | 2020-02-07 |
Family
ID=69337683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911108506.3A Withdrawn CN110768109A (en) | 2019-11-13 | 2019-11-13 | Detachable isolated fracture bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110768109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745351A (en) * | 2020-06-15 | 2020-10-09 | 中国长江电力股份有限公司 | 500kV welding type GIL equipment tapping overhauling construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0545508A1 (en) * | 1991-12-06 | 1993-06-09 | Siemens Aktiengesellschaft | Metal-enclosed, gas insulated switch installation with a cable terminal box |
| CN202308895U (en) * | 2011-10-31 | 2012-07-04 | 中国西电电气股份有限公司 | Detachable maintenance test unit for gas insulated metal enclosed switchgear |
| CN203551599U (en) * | 2013-10-16 | 2014-04-16 | 山东泰开高压开关有限公司 | A detachable connecting device used for an enclosed-type combination electric appliance withstand voltage test |
-
2019
- 2019-11-13 CN CN201911108506.3A patent/CN110768109A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0545508A1 (en) * | 1991-12-06 | 1993-06-09 | Siemens Aktiengesellschaft | Metal-enclosed, gas insulated switch installation with a cable terminal box |
| CN202308895U (en) * | 2011-10-31 | 2012-07-04 | 中国西电电气股份有限公司 | Detachable maintenance test unit for gas insulated metal enclosed switchgear |
| CN203551599U (en) * | 2013-10-16 | 2014-04-16 | 山东泰开高压开关有限公司 | A detachable connecting device used for an enclosed-type combination electric appliance withstand voltage test |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745351A (en) * | 2020-06-15 | 2020-10-09 | 中国长江电力股份有限公司 | 500kV welding type GIL equipment tapping overhauling construction method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200207 |
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| WW01 | Invention patent application withdrawn after publication |