CN204028192U - A kind of shockproof noiseproof voltage transformer (VT) - Google Patents
A kind of shockproof noiseproof voltage transformer (VT) Download PDFInfo
- Publication number
- CN204028192U CN204028192U CN201420457299.9U CN201420457299U CN204028192U CN 204028192 U CN204028192 U CN 204028192U CN 201420457299 U CN201420457299 U CN 201420457299U CN 204028192 U CN204028192 U CN 204028192U
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- Prior art keywords
- piston
- oil
- iron core
- oil pocket
- voltage transformer
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Abstract
The utility model discloses a kind of shockproof noiseproof voltage transformer (VT), comprise housing and be arranged on the iron core of enclosure interior, described iron core is wound with a winding and Secondary Winding, close between described iron core and housing and be formed with oil pocket, insulating oil is filled with in described oil pocket, its technical essential is: the inside of described oil pocket is provided with first piston and the second piston, oil pocket is separated into upper oil cavitie, middle oil pocket and lower oil cavitie by described first piston and the second piston respectively, side oil pocket is also provided with, described side oil pocket and described lower oil cavitie UNICOM outside described oil pocket; Described first piston is provided with rebound valve and flowing valve, described second piston is provided with compression valve and surge valve; Described iron core to be arranged in upper oil cavitie and to be fixed on described first piston, and the utility model aims to provide a kind of effective elimination mutual inductor inner-core causes vibration voltage transformer (VT) to mutual inductor housing.
Description
Technical field
The utility model relates to a kind of mutual inductor, and more particularly, it relates to a kind of voltage transformer (VT).
Background technology
Voltage transformer (VT) is the transformer of a band iron core.It is primarily of first and second coil, iron core and insulation composition.When applying a voltage U 1 on a winding, in iron core, just producing a magnetic flux φ, according to the law of electromagnetic induction, then in Secondary Winding, just producing a secondary voltage U2.Change once or the number of turn of Secondary Winding, can produce different primary voltages and secondary voltage ratio, this just can form not voltage transformer (VT) on year-on-year basis.Voltage transformer (VT) converts high voltage to low-voltage in proportion, i.e. 100V, and voltage transformer (VT) primary side is connected on primary system, secondary side joint measurement instrument, relay protection etc.; (capacitance type potential transformer is widely used) of mainly electromagnetic type, separately has non electromagnetic, as electronic type, photo-electric.
The basic structure of voltage transformer (VT) is very similar with transformer, and it also has two windings, and one is a winding, and one is Secondary Winding.Two windings are all contained in or around on iron core.Between two windings and have insulation between winding and iron core, make between two windings and have electrical isolation between winding and iron core.
In prior art, be disclose a kind of voltage transformer (VT) damping base in the Chinese utility model patent of CN201320554053.9 at application number, include base plate, base plate is vertically provided with one group of guide pillar, guide pillar can slide up and down vibration proof mounting is installed, be provided with between vibration proof mounting and base plate and organize shock-absorbing spring more, vibration proof mounting is symmetrically installed with grooved tie, base two ends are provided with multiple hanger in vibration proof mounting both sides, this utility model is simple and reasonable, install and use in process locate convenient and swift, adopt the design of vibration proof mounting, can effectively absorb vibratory impulse power, the installation position bottom voltage transformer (VT) and between base is avoided to occur loosening, wear phenomenon, prevent voltage transformer (VT) crooked, effectively ensure that the use safety of voltage transformer (VT).
The vibration damping chassis of this voltage transformer (VT) realizes vibration damping mainly through shock-absorbing spring, but after the winding energising in voltage transformer (VT), iron core self can produce vibration due to the effect of induced field, this vibration continues to apply acting force to mutual inductor housing, and the spring being in outside is difficult to reduce the impact of this vibration on mutual inductor housing, be difficult to the installation position fundamentally solved bottom voltage transformer (VT) and between base and occur loosening, wear phenomenon, and the vibration of described mutual inductor housing also brings larger noise.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of effective elimination mutual inductor inner-core mutual inductor housing to be caused to the voltage transformer (VT) of vibration.
For achieving the above object, the utility model provides following technical scheme: a kind of shockproof noiseproof voltage transformer (VT), comprise housing and be arranged on the iron core of enclosure interior, described iron core is wound with a winding and Secondary Winding, close between described iron core and housing and be formed with oil pocket, insulating oil is filled with in described oil pocket, wherein:
The inside of described oil pocket is provided with first piston and the second piston, and oil pocket is separated into upper oil cavitie, middle oil pocket and lower oil cavitie by described first piston and the second piston respectively, is also provided with side oil pocket outside described oil pocket, described side oil pocket and described lower oil cavitie UNICOM;
Described first piston is provided with rebound valve and flowing valve, described second piston is provided with compression valve and surge valve;
Described iron core to be arranged in upper oil cavitie and to be fixed on described first piston.
By adopting technique scheme, winding energising on described iron core produces vibration, when described iron core produce under effect of vibration move up and down time, described insulating oil is squeezed in the oil pocket of side by the insulating oil in described first piston extruding lower oil cavitie, molecular drag when being moved between each oil pocket by insulating oil alleviates the vibration of iron core to housing effect, the vibration that the described voltage transformer (VT) housing of effective minimizing operationally produces, decreases described voltage transformer (VT) simultaneously and runs the noise produced.
The utility model is set to further: be connected with spring between described iron core and the top of upper oil cavitie.
By adopting technique scheme, iron core held by described spring, and when leaking appears in described oil pocket, described spring can also provide certain effectiveness in vibration suppression to iron core, improves the vibration-isolating effect of described voltage transformer (VT) further.
The utility model is set to further: also comprise oily expander, described in have oily expander and upper oil cavitie UNICOM.
By adopting technique scheme, when described insulating oil temperature rises expansion, described insulating oil can flow in described oily expander, the oil pressure in balance oil pocket, prevents described first piston second piston to lose efficacy because oil pressure is too high, damage.
Compared with prior art, the utility model has the advantage of: by arranging first piston and the second piston in described voltage transformer (VT) inside, and form hydraulic damping mechanism by the insulating oil of voltage transformer (VT) inside, solve from inside and when iron core runs, to produce vibration and the problem that causes voltage transformer (VT) also thereupon to vibrate, avoid the installation position bottom voltage transformer (VT) and between base to occur loosening, wear phenomenon and solve the defect producing noise when described voltage transformer (VT) runs.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the shockproof noiseproof voltage transformer (VT) embodiment of the utility model.
Reference numeral: 1. housing; 2. iron core; 3. upper oil cavitie; 4. lower oil cavitie; 5. side oil pocket; 6. first piston; 7. the second piston; 8. rebound valve; 9. flowing valve; 10. compression valve; 11. surge valves; 12. springs; 13. oily expanders; 14. linked holes.
Embodiment
With reference to Fig. 1, the shockproof noiseproof voltage transformer (VT) embodiment of the utility model is described further.
A kind of shockproof noiseproof voltage transformer (VT), comprise housing 1 and be arranged on the iron core 2 of housing 1 inside, described iron core 2 is wound with a winding and Secondary Winding, close between described iron core 2 and housing 1 and be formed with oil pocket, insulating oil is filled with in described oil pocket, wherein:
The inside of described oil pocket is provided with first piston 6 and the second piston 7, oil pocket is separated into upper oil cavitie 3, middle oil pocket and lower oil cavitie 4 by described first piston 6 and the second piston 7 respectively, also be provided with side oil pocket 5 outside described oil pocket, described side oil pocket 5 and described lower oil cavitie 4 are by linked hole 14 UNICOM;
Described first piston 6 is provided with rebound valve 8 and flowing valve 9, described second piston 7 is provided with compression valve 10 and surge valve 11, described flowing valve 9 and surge valve 11 are general retaining valves, retaining valve is also known as non-return valve or reverse checkvalve, for preventing oil stream reversed flow in hydraulic system, or for preventing pressurized air reverse flow in pneumatic system, its spring 12 is very weak, when the oil pressure acting force on flowing valve 9 and surge valve 11 and spring 12 power in the same way time, flowing valve 9 and surge valve 11 are in closed condition, complete obstructed insulating oil; And when oil pressure acting force and spring 12 power reverse time, as long as there is very little oil pressure, flowing valve 9 and surge valve 11 just can be opened;
Compression valve 10 and rebound valve 8 are unloading valves, and its spring 12 is comparatively strong, and pretightning force is comparatively large, and only have when oil pressure is increased to a certain degree, valve could be opened: and when oil pressure reduces to a certain degree, namely valve cuts out voluntarily.
Described iron core 2 to be arranged in upper oil cavitie 3 and to be fixed on described first piston 6, and is connected with spring 12 between the top of described iron core 2 and upper oil cavitie 3;
Also comprise oily expander, described in have oily expander and upper oil cavitie 3 UNICOM.
The concrete principle of the utility model is as follows, after winding on described iron core 2 switches on power, described iron core 2 produces vibration under the effect of induced field, when described vibration makes described iron core 2 move downward, described first piston 6 moves down, the volume reducing of lower oil cavitie 4, oil pressure raises, insulating oil flows to upper oil cavitie 3 through flowing valve 9, upper oil cavitie 3 be account for a part of space by iron core 2, thus upper oil cavitie 3 increase volume rain cavity of resorption reduce volume, compression valve 10 just pushed open by part insulating oil, flow to side oil pocket 5, these valves form the damping force of iron core 2 vibration to the retardance of oil,
When described iron core 2 moves upward, first piston 6 upwards, the oil pressure of upper oil cavitie 3 raises, flowing valve 9 is closed, and the insulating oil in upper oil cavitie 3 is pushed rebound valve 8 open and flowed into cavity of resorption, and due to the existence of described iron core 2, the insulating oil that described upper oil cavitie 3 flows into is not enough to the volume being full of lower oil cavitie 4 increase, make lower oil cavitie 4 produce certain vacuum tightness, the fluid at this moment in side oil pocket 5 is pushed surge valve 11 open and is flow to cavity of resorption and supplement, and in like manner these valves form to the retardance of oil the damping force that iron core 2 vibrates;
Structure in sum effectively reduces the vibration that described voltage transformer (VT) housing 1 operationally produces, decrease described voltage transformer (VT) simultaneously and run the noise produced, iron core 2 held by described spring 12, when leaking appears in described oil pocket, described spring 12 can also provide certain effectiveness in vibration suppression to iron core 2, improves the vibration-isolating effect of described voltage transformer (VT) further.
Preferably, also comprise oily expander 13, described have oily expander 13 and upper oil cavitie 3 UNICOM, when described insulating oil temperature rises expansion, described insulating oil can flow in described oily expander 13, oil pressure in balance oil pocket, prevents described first piston 6 the second pistons 7 to lose efficacy because oil pressure is too high, damage.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a shockproof noiseproof voltage transformer (VT), comprise housing and be arranged on the iron core of enclosure interior, described iron core is wound with a winding and Secondary Winding, close between described iron core and housing and be formed with oil pocket, be filled with insulating oil in described oil pocket, it is characterized in that:
The inside of described oil pocket is provided with first piston and the second piston, and oil pocket is separated into upper oil cavitie, middle oil pocket and lower oil cavitie by described first piston and the second piston respectively, is also provided with side oil pocket outside described oil pocket, described side oil pocket and described lower oil cavitie UNICOM;
Described first piston is provided with rebound valve and flowing valve, described second piston is provided with compression valve and surge valve;
Described iron core to be arranged in upper oil cavitie and to be fixed on described first piston.
2. shockproof noiseproof voltage transformer (VT) according to claim 1, is characterized in that: be connected with spring between described iron core and the top of upper oil cavitie.
3. shockproof noiseproof voltage transformer (VT) according to claim 2, is characterized in that: also comprise oily expander, described in have oily expander and upper oil cavitie UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457299.9U CN204028192U (en) | 2014-08-13 | 2014-08-13 | A kind of shockproof noiseproof voltage transformer (VT) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457299.9U CN204028192U (en) | 2014-08-13 | 2014-08-13 | A kind of shockproof noiseproof voltage transformer (VT) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028192U true CN204028192U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420457299.9U Expired - Fee Related CN204028192U (en) | 2014-08-13 | 2014-08-13 | A kind of shockproof noiseproof voltage transformer (VT) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109906494A (en) * | 2016-09-09 | 2019-06-18 | Abb瑞士股份有限公司 | Transformer device with shrinkage-compensating |
-
2014
- 2014-08-13 CN CN201420457299.9U patent/CN204028192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109906494A (en) * | 2016-09-09 | 2019-06-18 | Abb瑞士股份有限公司 | Transformer device with shrinkage-compensating |
| CN109906494B (en) * | 2016-09-09 | 2021-04-13 | Abb电网瑞士股份公司 | Transformer assembly with shrinkage compensation |
| US11456104B2 (en) | 2016-09-09 | 2022-09-27 | Hitachi Energy Switzerland Ag | Transformer assembly with shrinkage compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |