CN203205860U - Discharge blocking device for capacitor bank of flame-proof type frequency conversion box - Google Patents
Discharge blocking device for capacitor bank of flame-proof type frequency conversion box Download PDFInfo
- Publication number
- CN203205860U CN203205860U CN 201320192668 CN201320192668U CN203205860U CN 203205860 U CN203205860 U CN 203205860U CN 201320192668 CN201320192668 CN 201320192668 CN 201320192668 U CN201320192668 U CN 201320192668U CN 203205860 U CN203205860 U CN 203205860U
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- Prior art keywords
- latch
- frequency conversion
- discharge
- outage
- latch shaft
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Abstract
The utility model discloses a discharge blocking device for the capacitor bank of a flame-proof type frequency conversion box, which comprises a capacitor bank, a blocking shaft arranged on a mounting rack and capable of advancing and retreating spirally, and a power-off blocking button triggered by the blocking shaft. The power-off blocking button controls the power-on/off state of the main power supply of the frequency conversion box and the locking/unlocking state of a quick operating valve mechanism at the same time. The device is characterized by further comprising a discharge resistor and a magnetic switch, wherein the discharge resistor is connected with the capacitor bank to form a quick discharge loop. The magnetic switch is fixed on the mounting rack. Meanwhile, the blocking shaft is fixedly provided with a rotary member capable of rotating synchronously along with the blocking shaft. The rotary member is fixedly provided with a magnetic block used for driving the action of the magnetic switch to turn on the quick discharge loop. According to the technical scheme of the utility model, due to the adoption of the discharge blocking device, the defect in the prior art that existing power-off blocking equipment cannot forcedly discharge the capacitor bank of a frequency conversion box is overcome. Therefore, the application safety and the application reliability of the flame-proof type frequency conversion box are greatly improved.
Description
Technical field
The utility model relates to a kind of explosion-proof frequency conversion case safety guard, is specifically related to a kind of explosion-proof frequency conversion case capacitor set discharge locking device.
Background technology
In the standard GB/T 3836.1 " explosive atmosphere part 1: Device-General require " clear is arranged, require to have at explosion-proof frequency conversion case chamber door the Warning board of " after cutting off the power supply 15 minutes " and " forbid charged uncapping ".For satisfying the GB requirement, traditional explosion-proof frequency conversion case, be provided with the outage locking device at chamber door, this device drives the action of outage latch buttons by the latch shaft of spiral advance and retreat, and the outage latch buttons is then being controlled release and the locking of main power source power on/off and quick opening mechanism simultaneously.When latch shaft was positioned at initial condition, the outage latch buttons was failure to actuate, and main power source does not cut off the power supply, and quick opening mechanism also is in blocking and chamber door can't be opened; Press outage during latch buttons when the latch shaft precession puts in place, primary power source de-energizes, simultaneously the quick opening mechanism lock release make its can open (during practical operation, if precession does not put in place, then first outage, again along with precession deeply untie door lock, have precedence relationship).
The main purpose that " after cutting off the power supply 15 minutes " warning mark is set is to prevent that frequency converter DC circuit capacitor group from not opening chamber door during discharge off, injures equipment and personal safety.But still there are two potential safety hazards in this way.One, in this traditional way, the discharge of the inner dc capacitor of frequency converter belongs to the nature discharge, does not take the forced electric discharge measure.In the situation that naturally discharge, transducer power is larger, and discharge time is longer; Capacitor is longer service life, and the velocity of discharge is slower; The capacitor discharge time constant of different brands also is not quite similar.Therefore, this way for discharge time of dissimilar frequency converter very large uncertainty being arranged, causes the user can't well judge whether discharge off of capacitor group when operation.They are two years old, because present door-opening mechanism all adopts the quick operating valve technology, the time of opening the door was several seconds rank, be actually allow the user in the situation that not discharge off open chamber door, in case operating personnel are not according to the rules operation like this, in the situation that discharge off is not opened chamber door, there is great security risk.
Summary of the invention
The utility model purpose is: can't force defective that the capacitor group of frequency conversion case is discharged for overcoming existing outage locking device, and provide a kind of explosion-proof frequency conversion case capacitor set discharge locking device, it has increased forced electric discharge loop and the associated trigger mechanism of capacitor group on original outage locking device basis, allow the user when the outage release, can carry out repid discharge to the capacitor group, greatly improve safety in utilization and the reliability of explosion-proof frequency conversion case.
The technical solution of the utility model is: a kind of explosion-proof frequency conversion case capacitor set discharge locking device, comprise the capacitor group, be located at the latch shaft of spiral advance and retreat on the installing rack and the outage latch buttons that is triggered by described latch shaft, described outage latch buttons is controlled the power on/off of frequency conversion case main power source and release and the locking of quick opening mechanism simultaneously; Characterized by further comprising the discharge resistance and the magnetic switch that connect and compose the repid discharge loop with the capacitor group, described magnetic switch is fixed on the installing rack, be fixed with simultaneously the rotating member with its synchronous rotary on the described latch shaft, be fixed with on the described rotating member be used to the magnetic patch that drives described magnetic switch and move to connect the repid discharge loop.
Further, installing rack described in the utility model comprises base, support, latch receptacles and locking axle sleeve; Base one end fixed latch seat, and other end fixed support, have axis hole on the described latch receptacles, the end interference fit that described axis hole and base are adjacent is fixed with the locking axle sleeve, described latch shaft is passed described axis hole and is cooperated with the inner hole thread of locking axle sleeve, and described base of while is provided with the perforate corresponding with the endoporus of locking axle sleeve and stretches out for described latch shaft; Described outage latch buttons is fixed on the support, and with an end positioned opposite of described latch shaft protuberate basic unit perforate; Described magnetic switch also is fixed on the described support.
Further, the end relative with the outage latch buttons of latch shaft described in the utility model radially is provided with jump-ring slot, fix in the described jump-ring slot and be useful on the jump ring that latch shaft is carried out axial limiting, and the other end of latch shaft stretches out described latch receptacles and form boss for axial limiting.
Further, rotating member described in the utility model is disk, and described magnetic patch is fixed on the card of disk, and described magnetic switch is positioned at the place ahead of described magnetic patch.
Further, at a described latch shaft end relative with the outage latch buttons, described pad is used for regulating the axial spacing of magnetic patch and magnetic switch to disk described in the utility model by flat head screw and some pad axial lockings.
When the utility model was implemented in reality, capacitor group wherein, discharge resistance and magnetic switch series connection consisted of the repid discharge loop, and its concrete circuit connection is well known to those skilled in the art.What described magnetic switch adopted is conventional normally opened contact formula magnetic switch, is mainly used in controlling the break-make in repid discharge loop, and namely when magnetic switch did not move, the capacitor group did not seal in discharge resistance, can't form the loop discharge.When magnetic patch induced magnetism switch made it to move, the closing of contact so that the capacitor group seals in discharge resistance, was connected the loop and is discharged.
The outage latch buttons that relates in the utility model is prior art, and it is controlling release and the locking of frequency conversion case main power source power on/off and quick opening mechanism simultaneously.And as the prior art, during practical operation, if the latch shaft precession does not put in place, then first outage, there is precedence relationship in the release quick opening mechanism along with going deep into of precession again.In order to ensure before the quick opening mechanism release capacitor group is discharged fully, promote safety in utilization, solution of the present utility model is as follows: the stroke that described latch shaft triggers outage latch buttons action cut-out primary power source de-energizes is A, the stroke that described latch shaft triggers outage latch buttons action release quick opening mechanism is B, and described magnetic patch when driving the magnetic switch action and connecting the repid discharge loop stroke of latch shaft be C, described A≤C＜B.
The utility model has the advantages that:
1. the utility model allows the user can carry out repid discharge to the capacitor group when the outage release, overcome existing outage locking device and can't force defective that the capacitor group of frequency conversion case is discharged, greatly improved safety in utilization and the reliability of explosion-proof frequency conversion case.
The utility model is forced electric discharge loop and the associated trigger mechanism that has increased the capacitor group on original outage locking device basis, and it is convenient to transform, and simple in structure, production cost is low, and is easy and simple to handle, has very high practicality.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is structural front view of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the right view of Fig. 1.
Wherein: 1 latch shaft; 2 latch receptacles; 3 bases; 4 supports; 5 outage latch buttons; 6 magnetic switchs; 7 magnetic patch; 8 disks; 9 flat head screws; 10 pads; 11 jump rings; 12 locking axle sleeves; 13 boss.
Embodiment
Embodiment: in conjunction with Fig. 1 ~ shown in Figure 3, this explosion-proof frequency conversion case capacitor set discharge locking device that the utility model provides is the improvement of making on the basis of the explosion-proof frequency conversion case outage locking device of routine, and it specifically is comprised of latch shaft 1, latch receptacles 2, base 3, support 4, outage latch buttons 5, magnetic switch 6, magnetic patch 7, disk 8, flat head screw 9, pad 10, jump ring 11, locking axle sleeve 12, boss 13, capacitor group (not shown in FIG.) and these parts of discharge resistance (not shown in FIG.).
The 3 one end fixed latch seats 2 of base described in the present embodiment, and other end fixed support 4, have axis hole on the described latch receptacles 2, described axis hole and base 3 adjacent end interference fit are fixed with locking axle sleeve 12(locking axle sleeve 12 and knock in the axis hole), described latch shaft 1 is passed described axis hole and is cooperated with the inner hole thread of locking axle sleeve 12 that (inner hole refined of locking axle sleeve 12 twists out internal thread, and be milled with external screw thread with screw-internal thread fit on the latch shaft 1), described base 3 is provided with the perforate corresponding with the endoporus of locking axle sleeve 12 and stretches out for described latch shaft 1 simultaneously; Described outage latch buttons 5 is fixed on the support 4, and with an end positioned opposite of described latch shaft 1 protuberate basic unit 3 perforates.Namely the same with routine techniques, described latch shaft 1 spiral advance and retreat are in order to trigger outage latch buttons 5, and described outage latch buttons 5 is controlled the power on/off of frequency conversion case main power source and release and the locking of quick opening mechanism (not shown in FIG.) simultaneously.
Latch shaft described in the present embodiment 1 end relative with outage latch buttons 5 radially is provided with jump-ring slot, fix in the described jump-ring slot and be useful on the jump ring 11 that latch shaft 1 is carried out axial limiting, and the other end of latch shaft 1 stretches out described latch receptacles 2 and form boss 13 for axial limiting.Jump ring 11 and boss 13 cooperate the spiral to latch shaft 1 to carry out axial limiting.
Capacitor group, discharge resistance and magnetic switch 6 series connection consist of the repid discharge loop in the present embodiment, and described magnetic switch 6 is conventional normally opened contact formula magnetic switch, and it is fixed on the support 4, is used for the break-make in control repid discharge loop.Disk described in the present embodiment 8 by flat head screw 9 and some pad 10 axial lockings at described latch shaft 1 end relative with the latch buttons 5 of cutting off the power supply, therefore when latch shaft 1 precession, disk 8 can be with its synchronous rotary.As shown in Figure 1 and Figure 2, be fixed for driving the magnetic patch 7 that described magnetic switch 6 moves to connect the repid discharge loop on the left side card of disk 8 (towards the card of outage latch buttons 5) in the present embodiment.Described magnetic switch 6 is positioned at the position on the lower, the place ahead of magnetic patch 7.Described pad 10 is used for regulating the axial spacing of magnetic patch 7 and magnetic switch 6, and its concrete usage quantity is decided according to actual conditions certainly, has used three pads 10 in the present embodiment.
In conjunction with Fig. 1 ~ Fig. 3, during specific works: when latch shaft 1 was rotated counterclockwise on earth, the boss 13 of latch shaft 1 was in outermost position, makes quick opening mechanism be in locked position of coupler.When latch shaft 1 is rotated clockwise to assigned address, 5 actions of outage latch buttons, primary power source de-energizes.When latch shaft 1 further was rotated clockwise to assigned address, 5 actions of outage latch buttons kept, and magnetic patch 7 inductions drive magnetic switch 6 actions, connect discharge resistance, to capacitor group forced electric discharge; Latch shaft 1 further is rotated clockwise to the assigned address stroke and finishes, and the boss 13 of latch shaft 1 is in and leans on inner position (also being Fig. 1, position shown in Figure 2) most at this moment, so that quick opening mechanism is in the unlocked position, allows to open chamber door.Namely in the design of the present embodiment, suppose that it is A that the stroke of primary power source de-energizes is cut off in 5 actions of described latch shaft 1 triggering outage latch buttons, the stroke that described latch shaft 1 triggers outage latch buttons 5 action release quick opening mechanisms is B, and described magnetic patch 7 when driving magnetic switchs 6 actions and connecting the repid discharge loop stroke of latch shaft 1 be C, described A＜C＜B.The purpose of design is in order to ensure before the quick opening mechanism release capacitor group to be discharged fully like this, promotes safety in utilization.
Adopt high voltage withstand class magnetic switch 6 in the utility model, voltage withstand class is applicable to 1140V and reaches with low-converter.When magnetic switch 6 action, normally opened contact is closed, and the capacitor group seals in discharge resistance, repid discharge.In the present case, discharge resistance makes the repid discharge in 2S of direct current capacitor group complete.
Above embodiment only is the utility model a kind of execution mode wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. explosion-proof frequency conversion case capacitor set discharge locking device, comprise the capacitor group, be located at the latch shaft (1) of spiral advance and retreat on the installing rack and the outage latch buttons (5) that is triggered by described latch shaft (1), described outage latch buttons (5) is controlled the power on/off of frequency conversion case main power source and release and the locking of quick opening mechanism simultaneously; Characterized by further comprising the discharge resistance and the magnetic switch (6) that connect and compose the repid discharge loop with the capacitor group, described magnetic switch (6) is fixed on the installing rack, be fixed with simultaneously the rotating member with its synchronous rotary on the described latch shaft (1), be fixed with on the described rotating member be used to driving described magnetic switch (6) action to connect the magnetic patch (7) in repid discharge loop.
2. explosion-proof frequency conversion case capacitor set discharge locking device according to claim 1 is characterized in that described installing rack comprises base (3), support (4), latch receptacles (2) and locking axle sleeve (12); Base (3) one end fixed latch seats (2), and other end fixed support (4), described latch receptacles has axis hole on (2), the end interference fit that described axis hole and base (3) are adjacent is fixed with locking axle sleeve (12), described latch shaft (1) is passed described axis hole and is cooperated with the inner hole thread of locking axle sleeve (12), and described base of while (3) is provided with the perforate corresponding with the endoporus of locking axle sleeve (12) and stretches out for described latch shaft (1); Described outage latch buttons (5) is fixed on the support (4), and with an end positioned opposite of described latch shaft (1) protuberate basic unit (3) perforate; Described magnetic switch (6) also is fixed on the described support (4).
3. explosion-proof frequency conversion case capacitor set discharge locking device according to claim 2, it is characterized in that described latch shaft (a 1) end relative with outage latch buttons (5) radially is provided with jump-ring slot, fix in the described jump-ring slot and be useful on the jump ring (11) that latch shaft (1) is carried out axial limiting, and the other end of latch shaft (1) stretches out described latch receptacles (2) and form boss (13) for axial limiting.
4. explosion-proof frequency conversion case capacitor set discharge locking device according to claim 1, it is characterized in that described rotating member is disk (8), described magnetic patch (7) is fixed on the card of disk (8), and described magnetic switch (6) is positioned at the place ahead of described magnetic patch (7).
5. explosion-proof frequency conversion case capacitor set discharge locking device according to claim 4, it is characterized in that described disk (8) by flat head screw (9) and some pads (10) axial locking at described latch shaft (a 1) end relative with outage latch buttons (5), described pad (10) is for the axial spacing of adjusting magnetic patch (7) and magnetic switch (6).
6. according to claim 1 and 2 or 3 or 4 or 5 described explosion-proof frequency conversion case capacitor set discharge locking devices, it is characterized in that it is A that the stroke of primary power source de-energizes is cut off in described latch shaft (1) triggering outage latch buttons (5) action, the stroke that described latch shaft (1) triggers outage latch buttons (5) action release quick opening mechanism is B, and the stroke of described magnetic patch (7) latch shaft (1) when driving magnetic switch (6) action and connecting the repid discharge loop is C, described A≤C＜B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320192668 CN203205860U (en) | 2013-04-17 | 2013-04-17 | Discharge blocking device for capacitor bank of flame-proof type frequency conversion box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320192668 CN203205860U (en) | 2013-04-17 | 2013-04-17 | Discharge blocking device for capacitor bank of flame-proof type frequency conversion box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205860U true CN203205860U (en) | 2013-09-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320192668 Withdrawn - After Issue CN203205860U (en) | 2013-04-17 | 2013-04-17 | Discharge blocking device for capacitor bank of flame-proof type frequency conversion box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259398A (en) * | 2013-04-17 | 2013-08-21 | 上海华欣民福电气科技有限公司 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
-
2013
- 2013-04-17 CN CN 201320192668 patent/CN203205860U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259398A (en) * | 2013-04-17 | 2013-08-21 | 上海华欣民福电气科技有限公司 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
| CN103259398B (en) * | 2013-04-17 | 2015-06-03 | 上海华欣民福电气科技有限公司 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130918 Effective date of abandoning: 20150603 |
|
| RGAV | Abandon patent right to avoid regrant |