CN208046088U - The full-insulated full-sealed SF6 ring main units of 24kv - Google Patents
The full-insulated full-sealed SF6 ring main units of 24kv Download PDFInfo
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- CN208046088U CN208046088U CN201820234823.4U CN201820234823U CN208046088U CN 208046088 U CN208046088 U CN 208046088U CN 201820234823 U CN201820234823 U CN 201820234823U CN 208046088 U CN208046088 U CN 208046088U
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- cabinet
- full
- load switches
- sealed
- connect
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Abstract
This application discloses a kind of full-insulated full-sealed SF6 ring main units of 24kv comprising：Cabinet, cabinet have inert gas SF6 in insulation and four sides closed state, cabinet interior sealing；24kv on-load switches, multiple 24kv on-load switches, which are isodistantly spaced, to be disposed side by side on inside cabinet；Branch bar, a plurality of branch bar are correspondingly connected with multiple 24kv on-load switches, and a plurality of branch bar end is combined into a total busbar；Cable sleeve, cable sleeve are arranged on the cabinet, and cable sleeve one end is connect with total busbar, and the other end is connect with external cable；Operating mechanism, operating mechanism are arranged on cabinet surface, are connect with 24kv on-load switches, play the function of external control；Expansion connector is correspondingly connected with 24kv on-load switches, for being connect with external loading.The application meets the transmission of electricity requirement of 20kV power transmission and transformation systems, to reduce line energy loss by the way that the sealing cabinet for being suitble to place 24kV power transmission and transformation system components and the multiple and matched component of 20kV power transmission and transformation systems is arranged.
Description
Technical field
The utility model is related to distribution network technology field more particularly to a kind of full-insulated full-sealed SF6 ring main units of 24kv.
Background technology
With the continuous social and economic development, people's lives level steps up, and the power demand of entire society becomes
Increasing, therefore, relevant line energy loss problem becomes constantly intractable and prominent in terms of power supply, also increasingly causes people
Concern and attention.
It is to increase conductor cross-section and improve power transmission and transformation system voltage to reduce the effective basic skills of line energy loss, and two
It is obviously more much lower than increasing conductor cross-section cost that power transmission and transformation system voltage is improved in kind method.Therefore power transmission and transformation system voltage is promoted
Imperative to reduce transmission line of electricity electric energy loss, national grid is being greatly developed by original 10kV power transmission and transformation systems upgrading
It is transformed into 20kV power transmission and transformation systems.So there is an urgent need to develop 24kv loading switch cabinets to meet 20kV power transmission and transformation systems market
Growth requirement.
The existing full-insulated full-sealed SF6 ring main units of 10kV may be only available for 10kV line systems, and 10kV line systems
Line energy loss it is big, the waste of power transmission and transformation cost is high.
Line energy loss Q=I2RT, same line resistance R is constant, and power-on time T is constant, to reduce line electricity energy loss
The small supply current I of depletion is effective method.And line powering power P=UI it is constant when, improve supply voltage U, power supply
Electric current I will reduce, and line energy loss just lowers naturally.And power transmission and transformation system voltage U is increased to 20kV by 10kV
Afterwards, electric current I reduces by 1/2, then power transmission and transformation line electric energy loss Q falls below original 1/4, so, the line of 10kV power transmission and transformation systems
Road electric energy loss is 4 times of 20kV power transmission and transformation systems.Therefore, the full-insulated full-sealed SF6 ring main units limitations of 10kV are increasing,
The market space is smaller and smaller.
Utility model content
In order to overcome the above deficiency, the purpose of this utility model is to provide a kind of full-insulated full-sealed SF6 looped networks of 24kv
Cabinet, to meet 20kV power transmission and transformation system market development demands.
To achieve the above object, technical solution provided by the present application is as follows.
A kind of full-insulated full-sealed SF6 ring main units of 24kv comprising：
Cabinet, cabinet have inert gas SF6 in insulation and four sides closed state, cabinet interior sealing；
24kv on-load switches, multiple on-load switches are disposed side by side at equidistant inside cabinet；
Branch bar, a plurality of branch bar are correspondingly connected with multiple 24kv on-load switches, a plurality of branch bar end combination
At a total busbar；
Cable sleeve, cable sleeve are arranged on the cabinet, and cable sleeve one end is connect with total busbar, the other end and external electrical
Cable connects；
Operating mechanism, operating mechanism are arranged on the outer surface of cabinet one end, and the other end is connect with 24kv on-load switches and phase
The function of external control is played in mutually cooperation；
Expansion connector, multiple expansion connectors are disposed side by side on cabinet both sides, are correspondingly connected with 24kv on-load switches, use
In connection external loading connection.
Further, further include air gauge, air gauge is arranged on cabinet surface, for checking the air pressure inside cabinet.
Further, cabinet explosion-proof valve is provided on cabinet, cabinet explosion-proof valve is in sealing state, when air pressure inside is beyond pre-
Fixed range is sealed in the SF6 inside cabinet and is discharged from cabinet explosion-proof valve.
Further, 24kv on-load switches are three work bit switches.
Further, a plurality of branch bar uses plug-in silicon rubber connector combination at total busbar.
By above technical solution, the advantageous effect of the application is：The full-insulated full-sealed SF6 ring main units of 24kv are logical
Setting is crossed to be suitble to place the sealing cabinet of 20kV power transmission and transformation system components and the multiple and matched component of 20kV power transmission and transformation systems,
The transmission of electricity requirement for meeting 20kV power transmission and transformation systems, to reduce line energy loss.
Description of the drawings
Fig. 1 is the structural schematic diagram of the full-insulated full-sealed SF6 ring main units of 24kv of the utility model；
Fig. 2 is that the full-insulated full-sealed SF6 ring main units of 24kv hide the left view after left plate；
Reference numeral：
1：Air gauge；2：Cabinet；3：Expansion connector；4:24kv on-load switches；5：Operating mechanism； 6：Branch bar；7：
Total busbar；8：Cable sleeve；9：Cabinet explosion-proof valve.
Specific implementation mode
To make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment
And with reference to attached drawing, the utility model is further described.It should be understood that these descriptions are merely illustrative, and do not really want
Limit the scope of the utility model.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid not
Necessarily obscure the concept of the utility model.
The full-insulated full-sealed SF6 ring main units of a kind of 24kv provided by the utility model comprising：
Cabinet 2, cabinet 2 have inert gas SF6 in insulation and four sides closed state, 2 interior sealing of cabinet；
24kv on-load switches 4, multiple 24kv on-load switches 4 are disposed side by side at equidistant inside cabinet 2；
Branch bar 6, a plurality of branch bar 6 and 24kv on-load switches 4 are correspondingly connected with, the combination of 6 end of a plurality of branch bar
At a total busbar 7；
Cable sleeve 8, cable sleeve 8 be arranged on cabinet 2,8 one end of cable sleeve is connect with total busbar 7, the other end and
External loading connects；
Operating mechanism 5,5 one end of operating mechanism are arranged on 2 outer surface of cabinet, and the other end is connect with 24kv on-load switches 4
And cooperate, play external control function.
Greatly developed due to national grid becomes 20kV power transmission and transformation by original 10kV power transmission and transformation system upgradings
System.Exploitation 24kV switchgears can meet 20kV power transmission and transformation system market development demands.
Please referring to Fig.1-Fig. 2,24kv all insulations sealing SF6 ring main units include cabinet 2 and the component that is arranged on cabinet 2,
It cooperates between multiple components, meets the transmission of electricity requirement of 20kV power transmission and transformation systems.In the present embodiment, cabinet 2 is at four sides
The rectangular shape with a recess portion of sealing, is filled with inert gas SF6, due to high-purity sulfur hexafluoride gas inside cabinet 2
With good insulation and arc extinction performance, connecting-disconnecting function and the safety of ring 24kv load switches 4 can guarantee.Inside cabinet 2
Multiple 24kv on-load switches 4 being adapted with 20kv transmission circuits are provided with, multiple 24kv on-load switches 4 are equidistantly arranged side by side
Inside cabinet 2, it is connected with a plurality of branch bar 6, the contact (not indicated in figure) around 24kv on-load switches 4 is provided with
Arc-control device (does not indicate) in figure, to limit electric arc and help arc extinction, in the present embodiment, 24kv on-load switches 4
For three work bit switches, 24kv on-load switches 4 include three positions, respectively closing position, open position and earthing position,
The contact of 24kv on-load switches 4 coordinates with arc-control device, and realization is connected and disconnected from transmission circuit, 24kv on-load switches 4
Earthing position is connect with the earth, can effectively prevent and electric leakage accident occurs.In addition, 24kv on-load switches 4 are opened using Small current control
What is closed cut-offs situation, ensure that the safety and reliability of 24kv on-load switches 4.Further, 24kv on-load switches 4 can not only
The open and close for enough controlling load current and overload current, can also control nonloaded line, no-load transformer and capacitor group
Deng other circuits closure and cut-off, the present embodiment is not limited to a kind of embodiment.
- Fig. 2 is please referred to Fig.1, cable sleeve 8 is provided at 2 recess portion of cabinet, multiple cable sleeves 8 are disposed side by side on cabinet
2 surface of body, 8 one end of cable sleeve are connect with external cable, and the other end is connect with total busbar 7, and cable sleeve 8 is external cable
Contact, it is with good performance, and have enough load capacity, while there is good air-tightness, in external cable
Transmission electric current is entered through cable sleeve 8 inside cabinet 2, is flowed into total busbar 7, then is shunted through total busbar 7, is flowed into a plurality of
Branch bar 6, the 24kv on-load switches 4 being connect with branch bar 6 are responsible for disconnection and the connection between external cable and load, when
When 24kv on-load switches 4 are connected to, the electric current for flowing into branch bar 6 is flowed to through 24kv on-load switches 4 in expansion connector 3, is extended
3 one end of connector is connect with 24kv on-load switches 4, and the other end is connect with external loading, and expansion connector 3 is opened as 24kv loads
4 and the contact of external loading are closed, there is stronger load capacity, the expanded connector of electric current 3 for flowing into cabinet 2 flows out to outside
In load, electric current is provided for external loading.So far, the transmission process of electric current is completed.Here, in a preferred embodiment,
A plurality of branch bar 6 is combined into total busbar 7, the connection of plug-in silicon rubber using plug-in silicon rubber connector (not indicated in figure)
Device, it is not only conductive reliable, but also combination can easily be attached to a plurality of branch bar 6, it is convenient for the increase-volume of user, electric substation
And transformation.
Operating mechanism 5 is additionally provided on cabinet 2, the setting of 5 one end of operating mechanism is in 2 surface of cabinet, the other end and setting
24kv on-load switches 4 inside cabinet 2 connect, and operating mechanism 5 cooperates with 24kv on-load switches 4, by operating
Mechanism 5 can carry out switching action to 24kv on-load switches 4.
Air gauge 1 is provided on cabinet 2, for detecting the barometric information inside cabinet 2, when internal unit breaks down
Or cause temperature excessively high due to operating for a long time, it is filled with the SF6 inside cabinet 2 and expands at high temperature, cause air pressure to increase, pass through gas
The case where pressing table 1,2 air pressure inside of cabinet can be understood in time, and then understand the working order of equipment in cabinet 2.Further,
Cabinet 2 is additionally provided with cabinet explosion-proof valve 9, and the hardness of cabinet explosion-proof valve 9 is less than cabinet 2 itself, and under normal circumstances, cabinet is explosion-proof
Valve 9 is sealing state, and the gas inside cabinet 2 expands since temperature raises, and when exceeding certain predetermined value, cabinet is explosion-proof
Valve 9 is rushed to open under the situation of high pressure, is sealed in the SF6 inside cabinet 2 and is excluded from cabinet explosion-proof valve 9, and the cabinet of sealing is prevented
Explosion accident occurs in the state that air pressure is excessively high for body 2.
The manufacturing process of the full-insulated full-sealed SF6 ring main units of 24kv is divided into multiple steps, and each steps are as follows：
1. taking, stainless steel plate blanking bending kind nail, three bread enclose and hermetically sealed welding；
2. the main materials such as 24kV on-load switches 4 are installed in cabinet, expansion connector 3 and cable sleeve 8, branch bar 6, which makes, to be connected
It connects；
3. major loop resistance and Insulation test；
4. cabinet is sealed in the hermetically sealed welding of back plate；
5. vacuumizing, filling SF6 gases, helium leak test；
6. 2 auxiliary plate of air gauge 1 and cabinet, panel are installed.
It should be understood that the above-mentioned specific implementation mode of the utility model is used only for exemplary illustration or explains this reality
With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model
In the case of any modification, equivalent substitution, improvement and etc. done, should be included within the scope of protection of this utility model.In addition,
The appended claims for the utility model are intended to cover to fall into attached claim scope and boundary or this range and boundary
Whole change and modification examples in equivalent form.
Claims (5)
1. a kind of full-insulated full-sealed SF6 ring main units of 24kv, which is characterized in that it includes：
Cabinet, the cabinet have inert gas SF6 in insulation and four sides closed state, the cabinet interior sealing；
Multiple 24kv on-load switches, are isodistantly spaced and are disposed side by side on inside the cabinet；
A plurality of branch bar, one end of a plurality of branch bar are correspondingly connected with the 24kv on-load switches, described a plurality of point
The branch bus other end is combined into a total busbar；
Cable sleeve, the cable sleeve are arranged on the cabinet, and described cable sleeve one end is connect with total busbar, separately
One end is connect with external cable；
Operating mechanism, described operating mechanism one end are arranged on the cabinet surface, and the other end connects with the 24kv on-load switches
It connects and cooperates, play the function of external control；
Expansion connector, the multiple expansion connector are disposed side by side on the cabinet both sides, with the 24kv on-load switches pair
It should connect, for being connect with external loading.
2. the full-insulated full-sealed SF6 ring main units of 24kv according to claim 1, which is characterized in that further include：Setting is in institute
State the air gauge that detecting box body air pressure inside is used on cabinet.
3. the full-insulated full-sealed SF6 ring main units of 24kv according to claim 1, which is characterized in that be arranged on the cabinet
There is a cabinet explosion-proof valve, the cabinet explosion-proof valve is in sealing state, when air pressure inside exceeds scheduled range, is sealed in the cabinet
Internal SF6 is discharged from the cabinet explosion-proof valve.
4. the full-insulated full-sealed SF6 ring main units of 24kv according to claim 1-3 any one, which is characterized in that described
24kv on-load switches are three work bit switches.
5. the full-insulated full-sealed SF6 ring main units of 24kv according to claim 1-3 any one, which is characterized in that a plurality of
The branch bar is using plug-in silicon rubber connector combination at total busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820234823.4U CN208046088U (en) | 2018-02-09 | 2018-02-09 | The full-insulated full-sealed SF6 ring main units of 24kv |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820234823.4U CN208046088U (en) | 2018-02-09 | 2018-02-09 | The full-insulated full-sealed SF6 ring main units of 24kv |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208046088U true CN208046088U (en) | 2018-11-02 |
Family
ID=63952676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820234823.4U Expired - Fee Related CN208046088U (en) | 2018-02-09 | 2018-02-09 | The full-insulated full-sealed SF6 ring main units of 24kv |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208046088U (en) |
-
2018
- 2018-02-09 CN CN201820234823.4U patent/CN208046088U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20190209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |