CN205335079U - Can maintain energy -conserving condenser of formula low pressure motor - Google Patents
Can maintain energy -conserving condenser of formula low pressure motor Download PDFInfo
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- CN205335079U CN205335079U CN201520768546.1U CN201520768546U CN205335079U CN 205335079 U CN205335079 U CN 205335079U CN 201520768546 U CN201520768546 U CN 201520768546U CN 205335079 U CN205335079 U CN 205335079U
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Abstract
The utility model discloses a can maintain energy -conserving condenser of formula low pressure motor, including electric vessel shell and the condenser network of setting in electric vessel shell inside, electric vessel shell is equipped with binding post, fixed bolster, ground connection end outward, the discharge resistor of condenser sets up in electric vessel shell outside, and discharge resistor passes through binding post and electric capacity circuit connection, forms complete capacitor discharge circuit. The utility model discloses change externally by built -in power capacitor's discharge resistor, not only guaranteed original function of discharging, reduced the operating temperature of resistor simultaneously, also be convenient for to the change maintenance of resistor, the utility model has the advantages of simple structure, safe and reliable.
Description
Technical field
This utility model relates to field of electrical equipment, and particularly relating to one can maintenance type low voltage motor energy-saving capacitor。
Background technology
Power capacitor, for the capacitor of power system and electrical equipment。The size of condenser capacitance, is determined by the characteristic of dielectric between its physical dimension and two-plate。In order to make power capacitor safe operation, generally install discharge resistance therein, discharge resistance role mainly has following three aspects: (1) discharge residual charge, within its remaining voltage being dropped to safe voltage within the time of regulation after making capacitor depart from power supply, it is ensured that the person and equipment safety；(2) for there being internal fuse protected capacitor, release Internal fuse action produced " trapped charge ", eliminate additional DC voltage produced by " trapped charge "；(3) for DC filter capacitors, parallel discharge resistance in each element segment, except playing its residual charge effect of release, also act as the effect of potentiometer, make the DC voltage in each element segment be uniformly distributed。
Domestic patent database also discloses that the technology of some power capacitors:
As: [title] a kind of power capacitor, [patent No.] CN201420371275.1, [applying date] 2014.07.07, disclose a kind of power capacitor, including housing, lead-in wire sleeve pipe, liquid medium and condenser network, described condenser network is made up of multiple Capacitance parallel connections；Described each electric capacity is in series with a fuse；Described condenser network side is also parallel with discharge resistance；It is characterized in that, described housing is divided into epicoele and cavity of resorption by diaphragm plate；Described liquid medium and condenser network are installed on cavity of resorption；Described epicoele forms two annular seal spaces by midfeather；The diaphragm plate that described two annular seal spaces are corresponding is provided with pressure valve；Described lead-in wire sleeve pipe is installed on case top, connects condenser network respectively by going between on the downside of it；Described lead-in wire is by the electric armour clamp traverse upper and lower both sides of annular seal space。
Electrical machine energy-saving capacitor is the one in power capacitor, and the discharging resistor of current electrical machine energy-saving capacitor is all placed in capacitor internal, and this mounting structure exists many defects:
First, the high temperature of discharge resistance heating and capacitor upper strata oil very easily causes resistance to burn out。It is demonstrated experimentally that the temperature rise of oil can be reached 20 DEG C～30 DEG C by resistor, adding capacitor upper strata oil temperature about 60 DEG C, the operating temperature of resistor is between 80 DEG C～90 DEG C, and under the long term of this temperature, resistor very easily burns out。Secondly, resistance is arranged on inside airtight capacitor casing, and resistor cannot be carried out repair and replacement after damaging, and causes that whole capacitor is scrapped。
Therefore, existing electrical machine energy-saving capacitor technology remains to be further improved。
Summary of the invention
The purpose of this utility model is to solve the resistance that existing power capacitor exists easily to burn, the problem such as cannot keep in repair, it is provided that a kind of safe and reliable can maintenance type low voltage motor energy-saving capacitor。
Of the present utility model can maintenance type low voltage motor energy-saving capacitor, including capacitor casing and be arranged on the condenser network within capacitor casing, capacitor casing is externally provided with binding post, fixed support, ground connection termination；The discharging resistor of capacitor is arranged on capacitor protector external body, and discharging resistor is connected with condenser network by binding post, forms complete capacitor discharging circuit。
Creation design of the present utility model is in that: by the discharging resistor of power capacitor, and built-in by traditional product changes external into, is connected with condenser network by binding post, forms complete capacitor discharging circuit。Improved discharging resistor not only ensure that original discharging function, reduces the operating temperature of resistor simultaneously, also allows for the repair and replacement to resistor。
Further illustrating as the present invention, described discharging resistor includes wiring board, discharge resistance, Copper Foil；Discharge resistance is connected with Copper Foil by going between, and is connected respectively on the binding post of correspondence again through Copper Foil。
Further illustrating as the present invention, described condenser network is composed in parallel by many strips condenser network；After condenser network is connected with external discharging resistor, every strip condenser network is in parallel with corresponding discharge resistance respectively；Each electric capacity is in series with a fuse。
Further illustrating as the present invention, capacitor includes three binding posts, and binding post is arranged on capacitor casing top, by the sub-condenser network connecting correspondence respectively that goes between on the downside of it；Fixed support is evenly provided on capacitor casing surrounding, and quantity is 4-8 so that it is the mounting structure of capacitor is more reasonable, installs more firm；Described binding post adopts fixing U, V, W wiring of copper nut；Described ground connection termination is arranged on bottom capacitor casing, makes electric capacity possess grounding function, use procedure safety and reliability。
Further illustrating as the present invention, described wiring board is glass epoxy printed board, makes discharging resistor have excellent thermostability and anti-flammability, improves useful life；Discharge resistance is welded on glass epoxy printed board, makes resistance install more firm, improves stabilization of equipment performance。
Further illustrating as the present invention, capacitor has internal fuse protected。When circuit has big electric current to pass through, Internal fuse steep temperature rise, temperature exceedes fusion temperature and fuses at once, it is to avoid circuit is impaired。
Of the present utility model can compared with prior art have following progress by maintenance type low voltage motor energy-saving capacitor:
1, not easy burn-out resistance, owing to discharging resistor changes external installation into, it is possible to the operating temperature reducing resistor is down between 40 DEG C～55 DEG C, it is to avoid resistance burns, and maintains discharge performance stable。
2, easy to maintenance, owing to discharging resistor is external, can directly change when resistor damages, save maintenance cost to enterprise and timely restorer runs and brings great benefit。
3, preventing capacitor from exploding, this utility model also reduces the operating temperature of capacitor internal, it is to avoid the internal temperature too high blast caused。
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail。
Fig. 1 is that this utility model can the overall structure schematic diagram of maintenance type low voltage motor energy-saving capacitor。
Fig. 2 is that this utility model can the side schematic view of maintenance type low voltage motor energy-saving capacitor。
Fig. 3 is that this utility model can the catenation principle figure of maintenance type low voltage motor energy-saving capacitor。
Fig. 4 is the structural representation of the external discharging resistor of this utility model。
In figure, 1 binding post；2 fixed supports；3 capacitor casing；4 ground connection terminations；5 wiring boards；6 discharge resistances；7 Copper Foils。
Detailed description of the invention
Embodiment 1: referring to shown in Fig. 1 to Fig. 4, one can maintenance type low voltage motor energy-saving capacitor, including capacitor casing 3 be arranged on the condenser network within capacitor casing, capacitor casing is externally provided with binding post 1, fixed support 2, ground connection termination 4；The discharging resistor of capacitor is arranged on capacitor protector external body, and discharging resistor is connected with condenser network by binding post 1, forms complete capacitor discharging circuit。Binding post 1 had both also served as the incoming end of discharge resistance protector as U, V, W lead end。
As it is shown on figure 3, described condenser network is composed in parallel by many strips condenser network；After condenser network is connected with external discharging resistor, every strip condenser network is in parallel with corresponding discharge resistance 6 respectively。
As shown in Figure 4, described discharging resistor includes wiring board 5, discharge resistance 6, Copper Foil 7；Discharge resistance is connected with Copper Foil by going between, and is connected respectively on the binding post 1 of correspondence again through Copper Foil。
Capacitor includes three binding posts 1, and binding post is arranged on capacitor casing 3 top, by the sub-condenser network connecting correspondence respectively that goes between on the downside of it；Fixed support 2 is evenly provided on capacitor casing 3 surrounding, and quantity is 4-8；Described binding post adopts fixing U, V, W wiring of copper nut；Described ground connection termination 4 is arranged on bottom capacitor casing 3。Described wiring board 5 is glass epoxy printed board, and discharge resistance 6 is welded on glass epoxy printed board。
Embodiment 2: another kind can maintenance type low voltage motor energy-saving capacitor and embodiment 1 uniquely distinguish have at capacitor internal fuse protected。
Discharging resistor in embodiment 1 and embodiment 2 has the effect that and (1) discharges residual charge, within its remaining voltage being dropped to safe voltage within the time of regulation after making capacitor depart from power supply, it is ensured that the person and equipment safety；(2) for there being internal fuse protected capacitor, release Internal fuse action produced " trapped charge ", eliminate additional DC voltage produced by " trapped charge "。
Claims (6)
1. one kind can maintenance type low voltage motor energy-saving capacitor, including capacitor casing (3) be arranged on the condenser network within capacitor casing, capacitor casing is externally provided with binding post (1), fixed support (2), ground connection termination (4)；It is characterized in that: the discharging resistor of capacitor is arranged on capacitor protector external body, discharging resistor is connected with condenser network by binding post (1), forms complete capacitor discharging circuit。
2. according to claim 1 can maintenance type low voltage motor energy-saving capacitor, it is characterised in that: described discharging resistor includes wiring board (5), discharge resistance (6), Copper Foil (7)；Discharge resistance is connected with Copper Foil by going between, and is connected respectively on the binding post (1) of correspondence again through Copper Foil。
3. according to claim 1 can maintenance type low voltage motor energy-saving capacitor, it is characterised in that: described condenser network is composed in parallel by many strips condenser network；After condenser network is connected with external discharging resistor, every strip condenser network is in parallel with corresponding discharge resistance (6) respectively。
4. according to claim 1 can maintenance type low voltage motor energy-saving capacitor, it is characterized in that: capacitor includes three binding posts (1), binding post is arranged on capacitor casing (3) top, by the sub-condenser network connecting correspondence respectively that goes between on the downside of it；Fixed support (2) is evenly provided on capacitor casing (3) surrounding, and quantity is 4-8；Described binding post adopts fixing U, V, W wiring of copper nut；Described ground connection termination (4) is arranged on capacitor casing (3) bottom。
5. according to claim 2 can maintenance type low voltage motor energy-saving capacitor, it is characterised in that: wiring board (5) is glass epoxy printed board, and discharge resistance (6) is welded on glass epoxy printed board。
6. according to claim 1 can maintenance type low voltage motor energy-saving capacitor, it is characterised in that: capacitor has internal fuse protected。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768546.1U CN205335079U (en) | 2015-09-30 | 2015-09-30 | Can maintain energy -conserving condenser of formula low pressure motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768546.1U CN205335079U (en) | 2015-09-30 | 2015-09-30 | Can maintain energy -conserving condenser of formula low pressure motor |
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| Publication Number | Publication Date |
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| CN205335079U true CN205335079U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520768546.1U Active CN205335079U (en) | 2015-09-30 | 2015-09-30 | Can maintain energy -conserving condenser of formula low pressure motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545558A (en) * | 2019-01-15 | 2019-03-29 | 安徽瀚宇电气有限公司 | A kind of high life three-phase low-voltage capacitor |
-
2015
- 2015-09-30 CN CN201520768546.1U patent/CN205335079U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545558A (en) * | 2019-01-15 | 2019-03-29 | 安徽瀚宇电气有限公司 | A kind of high life three-phase low-voltage capacitor |
| CN109545558B (en) * | 2019-01-15 | 2023-12-22 | 安徽瀚宇电气有限公司 | High life three-phase piezoelectric capacitor |
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