CN103259398A - Flameproof type frequency conversion box capacitor bank discharging blocking device - Google Patents
Flameproof type frequency conversion box capacitor bank discharging blocking device Download PDFInfo
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- CN103259398A CN103259398A CN2013101329416A CN201310132941A CN103259398A CN 103259398 A CN103259398 A CN 103259398A CN 2013101329416 A CN2013101329416 A CN 2013101329416A CN 201310132941 A CN201310132941 A CN 201310132941A CN 103259398 A CN103259398 A CN 103259398A
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- frequency conversion
- outage
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Abstract
The invention discloses a flameproof type frequency conversion box capacitor bank discharging blocking device which comprises a capacitor bank, a blocking shaft which is arranged on an installing frame and gets in and gets out in a spiral mode and an outage blocking button triggered by the blocking shaft. The outage blocking button controls energizing and outage of a main power supply of a frequency conversion box and deblocking and blocking of a quick opening mechanism. The flameproof type frequency conversion box capacitor bank discharging blocking device is characterized in that the flameproof type frequency conversion box capacitor bank discharging blocking device further comprises a discharging resistor and a magnet switch, wherein the discharging resistor and the magnet switch are connected with the capacitor bank to form a quick discharging circuit; the magnet switch is fixed on the installing frame, the blocking shaft is fixed with a rotating element which synchronously rotates with the blocking shaft, and the rotating element is fixed with a magnetic block used for driving the magnet switch to act to be connected with the qucik discharging circuit. The defect that an existing outage blocking device cannot carry out discharging on a capacitor bank of a frequency conversion box compulsively is overcome, and using safety and reliability of the flameproof type frequency conversion box are greatly improved.
Description
Technical field
The present invention relates to a kind of explosion-proof frequency conversion case safety guard, be specifically related to a kind of explosion-proof frequency conversion case capacitor set discharge locking device.
Background technology
Clearly regulation is arranged in the standard GB 3836.1 " explosive atmosphere part 1: Device-General require ", require to have at explosion-proof frequency conversion case chamber door the caution label 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 outage earlier, 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.Under the situation of discharge naturally, transducer power is more big, and discharge time is more long; Capacitor is more long service life, and the velocity of discharge is more slow; The capacitor discharge time constant of different brands also is not quite similar.Therefore, this way for discharge time of dissimilar frequency converters very big 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 and allow the user under the situation of discharge off not, to open chamber door, in case operating personnel are not according to the rules operation like this, under the situation of discharge off not, open chamber door, have great security risk.
Summary of the invention
The present invention seeks to: 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, improve safety in utilization and the reliability of explosion-proof frequency conversion case greatly.
Technical scheme of the present invention 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; It is characterized in that also comprising discharge resistance and the magnetic switch that connects and composes the repid discharge loop with the capacitor group, described magnetic switch is fixed on the installing rack, on the described latch shaft rotating member that rotates synchronously with it is arranged fixedly simultaneously, fixedly be useful on the described rotating member and drive the magnetic patch that described magnetic switch moves to connect the repid discharge loop.
Further, installing rack described in the present invention 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 fixedly has 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 present invention radially is provided with the jump ring groove, fix in the described jump ring groove 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 present invention 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 present invention by flat head screw and some pad axial lockings.
When the present invention implemented in reality, capacitor group wherein, discharge resistance and magnetic switch series connection constituted 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 made the capacitor group seal in discharge resistance, connected the loop and discharged.
The outage latch buttons that relates among the present invention 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 the same with prior art, during practical operation, if the latch shaft precession does not put in place, then outage earlier, 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 invention 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.
Advantage of the present invention is:
1. the present invention 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, improved safety in utilization and the reliability of explosion-proof frequency conversion case greatly.
2. the present invention 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 present invention is further described:
Fig. 1 is structural front view of the present invention;
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 provided by the invention is the improvement of making on the basis of the explosion-proof frequency conversion case outage locking device of routine, and it specifically is made up 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 drawing among the figure) and these parts of discharge resistance (not drawing among the figure).
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 fixedly have locking axle sleeve 12(locking axle sleeve 12 to 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 (the endoporus essence 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 drawing among the figure) simultaneously.
Latch shaft described in the present embodiment 1 end relative with outage latch buttons 5 radially is provided with the jump ring groove, fix in the described jump ring groove 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 constitute 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, so when latch shaft 1 precession, disk 8 can be with its synchronous rotation.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, when specifically working: 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 position, lining (also being Fig. 1, position shown in Figure 2) most at this moment, makes quick opening mechanism be in the unlocked position, and allows to open chamber door.Namely in the design of 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 loops stroke of latch shaft 1 be C, described A＜C＜B.She Ji purpose 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 among the present invention, voltage withstand class is applicable to that 1140V reaches with low-converter.When magnetic switch 6 actions, the normally opened contact closure, the capacitor group seals in discharge resistance, repid discharge.In the present case, discharge resistance finishes the repid discharge in 2S of direct current capacitor group.
Above embodiment only is the present invention's a kind of execution mode wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention 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; It is characterized in that also comprising discharge resistance and the magnetic switch (6) that connects and composes the repid discharge loop with the capacitor group, described magnetic switch (6) is fixed on the installing rack, described latch shaft (1) goes up simultaneously fixedly the rotating member that rotates synchronously with it, fixedly is useful on the described rotating member to drive 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 fixedly has 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 the jump ring groove, fix in the described jump ring groove 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 or 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 |
|---|---|---|---|
| CN201310132941.6A CN103259398B (en) | 2013-04-17 | 2013-04-17 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132941.6A CN103259398B (en) | 2013-04-17 | 2013-04-17 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103259398A true CN103259398A (en) | 2013-08-21 |
| CN103259398B CN103259398B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310132941.6A Active CN103259398B (en) | 2013-04-17 | 2013-04-17 | Flameproof type frequency conversion box capacitor bank discharging blocking device |
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| CN (1) | CN103259398B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244847A (en) * | 2015-08-28 | 2016-01-13 | 洛阳中重自动化工程有限责任公司 | Multiple safety interlocking protection system and method for explosion-proof frequency converter |
| CN108400039A (en) * | 2018-04-19 | 2018-08-14 | 天地（常州）自动化股份有限公司 | Electric apparatus for explosive atmospheres combines electromechanical blocking device |
| CN109922430A (en) * | 2019-03-20 | 2019-06-21 | 苏州真趣信息科技有限公司 | Restricted clearance operating system and method |
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| CN2218970Y (en) * | 1995-04-27 | 1996-01-31 | 天津本布罗电子有限公司 | Mechanic driving device with explosive isolating equipment of isolator |
| CN200956313Y (en) * | 2006-10-13 | 2007-10-03 | 珠海优特电力科技股份有限公司 | Electronic locking device |
| DE102006054637A1 (en) * | 2006-11-16 | 2008-05-21 | Siemens Ag | Switch gear cabinet for accommodating e.g. relay, has bolt working together with mechanism and locking unit such that opening of door in on-position of gear unit and switching operation from off-position into on-position are prevented |
| CN201122528Y (en) * | 2007-12-05 | 2008-09-24 | 阜新金昊空压机有限公司 | Dynamoelectric association closedown explosion-proof control box |
| US20100140061A1 (en) * | 2008-12-10 | 2010-06-10 | Gibbs Irving A | Neutral draw-out automatic transfer switch assembly and associated method |
| CN202872613U (en) * | 2012-09-11 | 2013-04-10 | 上海伟肯实业有限公司 | A traction frequency conversion equipment structure of a coal cutter |
| CN203205860U (en) * | 2013-04-17 | 2013-09-18 | 上海华欣民福电气科技有限公司 | Discharge blocking device for capacitor bank of flame-proof type frequency conversion box |
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2013
- 2013-04-17 CN CN201310132941.6A patent/CN103259398B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2218970Y (en) * | 1995-04-27 | 1996-01-31 | 天津本布罗电子有限公司 | Mechanic driving device with explosive isolating equipment of isolator |
| CN200956313Y (en) * | 2006-10-13 | 2007-10-03 | 珠海优特电力科技股份有限公司 | Electronic locking device |
| DE102006054637A1 (en) * | 2006-11-16 | 2008-05-21 | Siemens Ag | Switch gear cabinet for accommodating e.g. relay, has bolt working together with mechanism and locking unit such that opening of door in on-position of gear unit and switching operation from off-position into on-position are prevented |
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| CN202872613U (en) * | 2012-09-11 | 2013-04-10 | 上海伟肯实业有限公司 | A traction frequency conversion equipment structure of a coal cutter |
| CN203205860U (en) * | 2013-04-17 | 2013-09-18 | 上海华欣民福电气科技有限公司 | Discharge blocking device for capacitor bank of flame-proof type frequency conversion box |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244847A (en) * | 2015-08-28 | 2016-01-13 | 洛阳中重自动化工程有限责任公司 | Multiple safety interlocking protection system and method for explosion-proof frequency converter |
| CN105244847B (en) * | 2015-08-28 | 2018-11-20 | 洛阳中重自动化工程有限责任公司 | Multiple safety interlocking protection system and method for explosion-proof frequency converter |
| CN108400039A (en) * | 2018-04-19 | 2018-08-14 | 天地（常州）自动化股份有限公司 | Electric apparatus for explosive atmospheres combines electromechanical blocking device |
| CN108400039B (en) * | 2018-04-19 | 2023-11-14 | 天地（常州）自动化股份有限公司 | Combined electromechanical locking device of explosion-proof electrical equipment |
| CN109922430A (en) * | 2019-03-20 | 2019-06-21 | 苏州真趣信息科技有限公司 | Restricted clearance operating system and method |
| CN109922430B (en) * | 2019-03-20 | 2020-12-18 | 苏州真趣信息科技有限公司 | Restricted space operating system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103259398B (en) | 2015-06-03 |
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Effective date of registration: 20180205 Address after: 417100 Lianyuan economic and Technological Development Zone, Loudi, Hunan Patentee after: Hunan Chuangan Flameproof Electricappliances Co.,Ltd. Address before: 200233 Shanghai City, Minhang District Caobao Road No. 1108, Room 202, Shanghai Huaxin Minfu Electric Technology Co Ltd Patentee before: Shanghai Huaxin Minfu Electrical Technology Co., Ltd. |