CN203071807U - Capacitor bank of mining frequency converter - Google Patents
Capacitor bank of mining frequency converter Download PDFInfo
- Publication number
- CN203071807U CN203071807U CN 201320051655 CN201320051655U CN203071807U CN 203071807 U CN203071807 U CN 203071807U CN 201320051655 CN201320051655 CN 201320051655 CN 201320051655 U CN201320051655 U CN 201320051655U CN 203071807 U CN203071807 U CN 203071807U
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- electric capacity
- busbar
- capacitor
- base plate
- capacitance group
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Abstract
The utility model provides the capacitor bank of a mining frequency converter, which comprises wired busbars, a capacitor bank, and a fixed base plate. The capacitor bank is characterized in that the wired busbars are arranged on the capacitor bank. The capacitor bank consists of a plurality of arrayed capacitors, wherein the bottom of each capacitor is provided with a bolt. The fixed base plate is provided with a plurality of through holes. An insulating pad is arranged between the capacitors and the fixed base plate. The insulating pad is provided with through holes. The bolts at the bottoms of the capacitors pass through the insulating pad and the fixed base plate and then are fixed through nuts. The insulating nuts are reeded and a sealing ring is arranged between each insulating nut and the fixed base plate respectively. The sealing rings are positioned in the grooves of the insulating nuts. The wired busbars comprise a first capacitor busbar, a second capacitor busbar, a first insulating strip and a second insulating strip. The first insulating strip is positioned on the first capacitor busbar and the second insulating strip is positioned between the first capacitor busbar and the second capacitor busbar. The second capacitor busbar is arranged on the electrodes of the capacitor bank. According to the technical scheme of the utility model, the problem in the prior art that existing capacitor banks are high in working voltage, poor in insulating property and low in mounting efficiency is solved. The above capacitor bank can be operated normally even in damp and severe working conditions.
Description
Technical field
The utility model belongs to the converter technology field, is a kind of mine-used frequency-converter capacitance group specifically.
Background technology
Along with the continuous development of technology, often need to use large power supply for satisfying the demand, but oversize power supply is unfavorable for use that therefore be inevitable the power supply miniaturization development trend.Known mine-used frequency-converter capacitor structure is by electrochemical capacitor, the electric capacity busbar, and the metal anchor ear, mounting panel, hold-down screw is formed.When the capacitance group in to prior art in the large power, electrically product-derived is installed, normally the metal anchor ear being fixed on the mounting panel hold-down screw does not tighten earlier, again electrochemical capacitor is inserted in the metal anchor ear according to the connection in series-parallel relation of electric capacity busbar, align electric capacity busbar and electrochemical capacitor both positive and negative polarity this moment, and then the hold-down screw of metal anchor ear tightened, at last with electric capacity busbar and electrochemical capacitor screw-driving.This kind mounting means is directly electrochemical capacitor to be installed on the metallic plate, and the mine-used frequency-converter operating voltage is that 1140V and long-term work are in the down-hole, work under bad environment, be easy to generate the dewfall phenomenon, because the electrochemical capacitor negative pole communicates with shell, though electrochemical capacitor is surrounded by insulating barrier outward, long-term work certainly will influence insulation property under the moist dewfall environment of high pressure, as seen the original structure installation procedure is loaded down with trivial details, and operating efficiency is very low and have a great potential safety hazard.The anchor ear structure itself has bigger limitation, if overtorquing can damage capacitance body, otherwise can't be fixed again, therefore demands urgently improving.Apparent, adopt traditional installation method, its installation procedure is loaded down with trivial details, and man-hour, the long amount of labour was big, and insulation, humidity resistance are poor, and needed bigger installing space.If with its frequency converter capacitance group as the colliery, it is used difficulty and well imagines.
Patent CN 2641790 Y disclose a kind of Capacitor group, comprise electric capacity and fixture thereof, described fixture be casing it comprise the spill underframe that has ventilation hole, the biside plate that has ventilation hole that cooperates with this underframe; Described electric capacity divides two rows to be arranged in the described casing, two rows are provided with dividing plate between the electric capacity, reform do and electric capacity between be provided with the insulation parting bead, the side plate all around of electric capacity and casing also is provided with insulation strip, described casing top is provided with the electric capacity pressing plate of insulation, and the binding post of electric capacity passes described electric capacity pressing plate.This kind capacitance group structure is too complicated, is unfavorable for reducing production costs, and also is not suitable for the colliery frequency converter.Comprehensive deficiency of the prior art is needed badly existing capacitance group mounting structure is improved.
Summary of the invention
Problems such as the purpose of this utility model provides a kind of mine-used frequency-converter capacitance group, has capacitance group operating voltage height now to solve, and insulation property are poor, and installation effectiveness is low still can operate as normal under the moist mal-condition of operational environment.
The purpose of this utility model is achieved in that it comprises line busbar, capacitance group, fixed base plate, is characterized in that: described line busbar is arranged on the capacitance group; Capacitance group is rearranged by the electric capacity that some bottoms are provided with bolt; Fixed base plate is provided with some through holes; Be provided with insulation cushion between electric capacity and the fixed base plate, insulation cushion is provided with through hole; After passing insulation cushion and fixed base plate, fixes by nut by the bolt of electric capacity bottom.
For improving the humidity resistance of capacitance group, described insulation nut is provided with groove, is provided with sealing ring between fixed base plate and the insulation nut, and sealing ring is positioned at the groove of insulation nut.
Described line busbar comprises the first electric capacity busbar, the second electric capacity busbar, first insulating trip and second insulating trip, wherein first insulating trip is positioned on the first electric capacity busbar, second insulating trip is between the first electric capacity busbar and the second electric capacity busbar, and the second electric capacity busbar is arranged on the capacitance group electrode.
For the sealing that improves capacitance group, increase the service life, reduce production costs, described insulation cushion is made by silica gel; Described insulation nut is made by nylon or reinforcement nylon.
For further improving the sealing of electric capacity and fixed base plate, the section of described insulation cushion is convex-shaped.
For preventing the phase mutual interference between the electric capacity, described electric capacity is set up in parallel two rows, is provided with dividing plate between the described electric capacity between two row's electric capacity, is provided with the insulation parting bead between dividing plate and the electric capacity.
Advantage of the present utility model and beneficial effect are as follows: the utility model arranges bolt arrangement in the electric capacity bottom and is fixed on the fixed base plate by nut, has saved anchor ear, has improved the installation strength of capacitance group, and installation process is not yielding; Between electric capacity and fixed base plate, arrange and make gasket structure by silica gel, in sealing, played the effect of insulation, and then the useful life of having improved capacitance group; Insulation cushion is made the convex-shaped structure be convenient to improve sealing effectiveness between itself and electric capacity, the fixed head; Insulating barrier is set between electric capacity, has improved the stability of capacitance group; After adopting the utility model, improved 2 ~ 3 times of the efficiency of assembling of capacitance group, insulation property are reliable, are adapted at long-term work under the moist rugged environment; And after capacitance group installs through inundation test, with capacitance group metal mounting panel with the lower part put into water after 24 hours with its fractionation, find that there is flooded condition insulation nut inside.
Characteristics of the present utility model: electrochemical capacitor is replaced by afterbody strap bolt formula electrochemical capacitor and increases insulation cushion between electrochemical capacitor bottom and metal fixed head, the metal fixed head is sheet metal component, the corresponding pre-processed perforate of satisfying electric clearance in installation site of electrochemical capacitor, insulation cushion adopts the die sinking of high insulating property material to make, once-forming effectively raises the electrochemical capacitor bottom and gets insulation property.Electrochemical capacitor bottom bolted adopts the insulating material nut, and the insulation nut structure is made for the independent design die sinking, and insulation nut inside is provided with groove effectively increases creepage distance.Installation seal washer in the groove effectively stops the dewfall that produces because of humidity, avoids dew directly and electrochemical capacitor housing contacts generation electric leakage, has improved insulation property to greatest extent.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is broken section structural representation sketch of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1-A part;
Fig. 3 is the partial enlarged drawing of Fig. 1-B part.
The symbol description of accompanying drawing major part: 1 metal fixed base plate, 2 strap bolt formula electrochemical capacitors, 3 insulation nuts, 4 insulation cushions, 5 seal washers, 6 first electric capacity busbars, 7 second electric capacity busbars, 8 hold-down screws, 9 first insulating trips, 10 second insulating trips, 11 electric capacity bolts.
Below in conjunction with accompanying drawing and by example utility model is described in further detail; but following example only is the utility model example wherein; do not represent the rights protection scope that the utility model limits, rights protection scope of the present utility model is as the criterion with claim.
Embodiment
According to Fig. 1 to Fig. 3 the utility model is described in detail.A kind of mine-used frequency-converter capacitance group of the present utility model, it comprises line busbar, capacitance group, metal fixed base plate 1, the line busbar is arranged on the capacitance group.Wherein the line busbar comprises: the first electric capacity busbar 6, the second electric capacity busbar 7, first insulating trip 9 and second insulating trip 10, wherein first insulating trip 9 is positioned on the first electric capacity busbar 6, second insulating trip 10 is between the first electric capacity busbar 6 and the second electric capacity busbar 7, and the second electric capacity busbar 7 is arranged on the capacitance group electrode.First, second electric capacity busbar is provided with the wiring otic placode.Fixing by hold-down screw 8 behind first insulating trip, the first electric capacity busbar, second insulating trip, the second electric capacity busbar aligned position.Capacitance group is rearranged by the electric capacity that some bottoms are provided with electric capacity bolt 11, and metal fixed base plate 1 is provided with some through holes.Be provided with insulation cushion 4 between electric capacity and the fixed base plate 1, insulation cushion 4 is provided with through hole.Be provided with O-ring seal 5 between metal fixed base plate 1 and the insulation nut 3, O-ring seal can embed in the groove of insulation nut.The bolt of electric capacity bottom passes insulation cushion, metal fixed base plate 1 back is fixing by insulation nut 3.Made by silica gel for improving sealing effectiveness insulation cushion 4, insulation nut 8 is by nylon or strengthen nylon and make.Wherein the section of insulation cushion 4 is convex-shaped (as shown in Figure 3).
Preferably, electric capacity is set up in parallel two rows, and is being provided with dividing plate between the described electric capacity between two row's electric capacity, be provided with insulation parting bead (not shown) between dividing plate and the electric capacity.
Claims (7)
1. mine-used frequency-converter capacitance group, it comprises line busbar, capacitance group, fixed base plate, it is characterized in that: described line busbar is arranged on the capacitance group; Capacitance group is rearranged by the electric capacity that some bottoms are provided with bolt; Fixed base plate is provided with some through holes; Be provided with insulation cushion between electric capacity and the fixed base plate, insulation cushion is provided with through hole; The bolt of electric capacity bottom is fixed by the insulation nut after passing insulation cushion and fixed base plate.
2. mine-used frequency-converter capacitance group according to claim 1, it is characterized in that: described insulation nut is provided with groove, is provided with sealing ring between fixed base plate and the insulation nut, and sealing ring is positioned at the groove of insulation nut.
3. mine-used frequency-converter capacitance group according to claim 1 and 2, it is characterized in that: described line busbar comprises the first electric capacity busbar, the second electric capacity busbar, first insulating trip and second insulating trip, wherein first insulating trip is positioned on the first electric capacity busbar, second insulating trip is between the first electric capacity busbar and the second electric capacity busbar, and the second electric capacity busbar is arranged on the capacitance group electrode.
4. mine-used frequency-converter capacitance group according to claim 3, it is characterized in that: described insulation cushion is made by silica gel.
5. mine-used frequency-converter capacitance group according to claim 4 is characterized in that: described insulation nut is made by strengthening nylon.
6. mine-used frequency-converter capacitance group according to claim 5, it is characterized in that: the section of described insulation cushion is convex-shaped.
7. mine-used frequency-converter capacitance group according to claim 6, it is characterized in that: described electric capacity is set up in parallel two rows, is provided with dividing plate between the described electric capacity between two row's electric capacity, is provided with the insulation parting bead between dividing plate and the electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051655 CN203071807U (en) | 2013-01-30 | 2013-01-30 | Capacitor bank of mining frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051655 CN203071807U (en) | 2013-01-30 | 2013-01-30 | Capacitor bank of mining frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071807U true CN203071807U (en) | 2013-07-17 |
Family
ID=48770556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320051655 Expired - Fee Related CN203071807U (en) | 2013-01-30 | 2013-01-30 | Capacitor bank of mining frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273256A (en) * | 2018-11-07 | 2019-01-25 | 深圳市英威腾电气股份有限公司 | A kind of capacitance structure and electrical equipment |
| CN110838656A (en) * | 2019-11-29 | 2020-02-25 | 广东美的暖通设备有限公司 | Busbar, frequency converter and centrifugal machine |
-
2013
- 2013-01-30 CN CN 201320051655 patent/CN203071807U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273256A (en) * | 2018-11-07 | 2019-01-25 | 深圳市英威腾电气股份有限公司 | A kind of capacitance structure and electrical equipment |
| CN110838656A (en) * | 2019-11-29 | 2020-02-25 | 广东美的暖通设备有限公司 | Busbar, frequency converter and centrifugal machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20220130 |