CN104722404B - Electric dust collector and electric field manhole door safety device for same - Google Patents
Electric dust collector and electric field manhole door safety device for same Download PDFInfo
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- CN104722404B CN104722404B CN201510108585.3A CN201510108585A CN104722404B CN 104722404 B CN104722404 B CN 104722404B CN 201510108585 A CN201510108585 A CN 201510108585A CN 104722404 B CN104722404 B CN 104722404B
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Abstract
The invention discloses an electric field manhole door safety device for an electric dust collector. The electric field manhole door safety device comprises a manhole door lock for controlling the electric field manhole door to be locked or opened, a plurality of manhole door keys matched with a manhole door lock, a main electric lock for controlling the on-off of a main circuit of an electric field and a main electric lock key matched with the main electric lock; and the electric field manhole door safety device also comprises an interlock disc, the interlock disc is provided with a main lock cylinder matched with the main electric lock key and branch lock cylinders matched with each manhole door key, and when any branch lock cylinder is separated from the manhole door key, the main electric lock controls the main circuit to be switched off. By adopting the electric field manhole door safety device, the occurrence rate of safety accidents can be further reduced, and the safety performance of the electric field can be improved. The invention also discloses an electric dust collector comprising the electric field manhole door safety device.
Description
Technical field
The present invention relates to technical field of dust removal equipment, more particularly to a kind of electric field manhole door safety dress for electric cleaner
Put.
Background technology
With economic fast development, the increasingly raising of living standards of the people, country requires air quality control more next
It is tighter, while also putting forward higher requirement to the performance and reliability of cleaner.
For convenience of electric field inside anode and cathode overhaul of the equipments, manhole need to be set in the electric field region of each in electric dust removal system
Door；But electric field region is high voltage discharge field, and voltage can reach thousands of volts, extremely hazardous.The manhole door electric field of traditional electric cleaner
Manhole door safety device is usually to arrange corresponding switch elements between each electric field high voltage control cabinet and electric cleaner circuit
Switching system, the system being opened or being closed by key controller switching value contact, and respective electric field circuit is obstructed when key is extracted, maintenance
Personnel can overhaul into electric cleaner, and maintenance finishes and inserts a key into switch and make circuit turn-on, electric cleaner put into operation.But,
Field service personnel often controls to disconnect with operation operator Jing, at the scene during maintainer's electric field internal overhaul, it is unclear that electricity
Whether field high voltage rectification equipment runs, and operator are in remote operation high voltage rectification equipment for operation, also whether do not know scene
There is maintainer, once field service personnel electric field is entered accidentally when electric field runs, or operation operator internally examine
Threshold electric field when repairing, can cause casualties, and consequence is hardly imaginable.
In order to prevent the generation of above-mentioned condition, interlocking switch can be made on the basis of above-mentioned installation to use same with manhole door
Key, when key is extracted from interlocking switch, respective electric field circuit is obstructed, and maintainer can just open manhole door and remove into electricity
Dirt device is overhauled, and maintenance is finished extracts key from manhole door and inserting interlocking switch makes circuit turn-on, electric cleaner just can put into operation.
But, the electric field region of electric cleaner may be formed by the electric field of multiple connections, and electric field region is likely to be set in all directions
Put multiple manhole doors；And in above-mentioned electric field manhole door safety device, each interlocking switch only controls the high-tension circuit of an electric field,
When one of manhole door is opened, the interlocking switch of other electric fields is likely to be at the state of conducting；Or it is possible to electric interlock
The switch contact of switch is damaged, no matter key can be caused either with or without extracting from interlocking switch, circuit is all normal open, and these all make
There is the danger of high pressure electric shock during maintenance.
Therefore, how to avoid further preventing the generation of security incident, improve the security performance of electric field, just become this area
The problem of technical staff's urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of electric field manhole door safety device for electric cleaner, it is by multiple manhole doors
Key be integrated on inter-locking panel, and make inter-locking panel with control main circuit folding main electric locking use it is same pairing key
Spoon, with key and the pairing key linkage of each one hole door of season, when only the key in each manhole door is inserted on inter-locking panel,
Pairing key can be pulled up from inter-locking panel, so as to keep away the incidence rate that reduce further security incident, improve electric field
Security performance.
To solve above-mentioned technical problem, the present invention provides a kind of electric field manhole door safety device for electric cleaner, bag
The locking of control electric field manhole door or opener hole door lock, some manhole door keies matched with the manhole door lock are included, with
And the main electric lock of the main circuit break-make of control electric field, and the main electric lock key matched with the main electric lock；Also include inter-locking panel, institute
State and the main lock core matched with the main electric lock key offered on inter-locking panel, and with each manhole door key match one by one point
Lock core, when arbitrary described point of lock core is in separable state with the manhole door key, the main electric lock controls the main circuit
Disconnect.
Preferably, when the main circuit is in channel status, each described point of lock core is in lock with the manhole door key
Determine state.
Preferably, the main electric lock includes first base, and is arranged at the first base and in the main electric lock key
The first lock core being rotated by, first lock core is connected with the first expansion link, first lock core by the first rocking arm
First expansion link is driven to stretch out or retract relative to the first base during rotation.
Preferably, the manhole door lock includes second base, and is arranged at the second base and in the manhole door key
Second lock core being rotated by of spoon, when second lock core turns to precalculated position, the manhole door lock and the manhole
Door key is separable.
Preferably, the inter-locking panel includes offering the guide rod of some grooves, the second rocking arm is provided with the guide rod, respectively
The telescopic block of described point of lock core is oppositely arranged with the groove, and second rocking arm is fixedly connected with the main lock core.
The present invention also provides a kind of electric cleaner, pacifies including the manhole door for being arranged on electric field higher-pressure region, and electric field manhole door
Full device, the electric field manhole door safety device is electric field manhole door safety device as above.
Electric field manhole door safety device provided by the present invention is used for electric cleaner, and the electric field manhole door safety device includes
The locking of control electric field manhole door or opener hole door lock, some manhole door keies matched with the manhole door lock, and
The main electric lock of the main circuit break-make of control electric field, and the main electric lock key matched with the main electric lock；Also include inter-locking panel, it is described
The main lock core matched with the main electric lock key, and point lock matched one by one with each manhole door key are offered on inter-locking panel
Core, when arbitrary described point of lock core is in separable state with the manhole door key, the main electric lock controls the main circuit and breaks
Open.
It is if arbitrary point of lock core can be separated with manhole door key, i.e., separable with this in the electric cleaner course of work
The corresponding manhole door of manhole door key in can opening when, main electric lock control main circuit disconnects；That is, only working as institute
When somebody hole door is in the state that cannot be opened, main power source can be connected, and electric field can be powered；So, the manhole
Door safety device is integrated in the key of multiple manhole doors on inter-locking panel, and makes the main electric lock of inter-locking panel and control main circuit folding
Device, pairing key, is linked, only in each manhole door using same with the key and the pairing key of each one hole door of season
When key is inserted on inter-locking panel, pairing key can be pulled up from inter-locking panel, so as to reduce further security incident
Incidence rate, improves the security performance of electric field.
In a preferred embodiment, main electric lock provided by the present invention includes first base, and is arranged at first
Base and in first lock core being rotated by of the main electric lock key, the first lock core is connected with first by the first rocking arm
Expansion link, the first lock core drives the first expansion link to stretch out relative to first base or retract when rotating；When main electric lock key is inserted
When entering the first lock core and driving the first lock core to rotate, the first rocking arm just can drive the first expansion link to stretch out or retraction shell, when the
When one expansion link stretches out shell, the first expansion link blocks main power switch so as to can not close energization, now manhole door key
Can extract；When the first expansion link is retracted, the first expansion link will not block main power switch so as to can open energization；Pass through
Above-mentioned main electric lock realizes the break-make simple structure of main power source, and can preferably realize main power source break-make with main electric lock key action
Linkage, reliability is higher.
In another preferred embodiment, inter-locking panel provided by the present invention includes offering leading for some grooves
Bar, is provided with the second rocking arm on guide rod, telescopic block and the groove of each point of lock core are oppositely arranged, and the second rocking arm is fixed with main lock core and connected
Connect；When the telescopic block of arbitrary point of lock core is stretched out, the corresponding manhole door key of this point of lock core can be pulled out, corresponding manhole door
Can open, telescopic block is stretched out and into the groove on guide rod, and the motion of guide rod axial direction is limited by the telescopic block that this stretches out,
Guide rod cannot be moved, then the rocking arm for being driven by guide rod cannot be moved, and the main lock core being connected with rocking arm cannot rotate and extract main electricity
Lock key, main circuit power-off；Only when the telescopic block of all points of lock cores is in retracted mode, i.e., the equal nothing of arbitrary manhole door key
Method is extracted, and when all manhole doors are in lock-out state, the groove of guide rod is no longer influenced by the restriction of telescopic block, and guide rod can be moved
And band motion rocker arm drives main lock core to rotate and extract main electric lock key, could be powered with its main electric lock of opening；What the structure was realized
Main lock core is higher with the linkage structure reliability of point lock core, and mechanical linkage fundamentally avoids the misconnection of main circuit and leads to, and improves
The security performance of electric cleaner.
Description of the drawings
Fig. 1 is that a kind of structure of specific embodiment of main electric lock is shown in electric field manhole door safety device provided by the present invention
It is intended to；
Fig. 2 is a kind of structural representation of specific embodiment of disk that links in electric field manhole door safety device shown in Fig. 1.
Specific embodiment
The core of the present invention is to provide a kind of electric field manhole door safety device for electric cleaner, and it is by multiple manhole doors
Key be integrated on inter-locking panel, and make inter-locking panel with control main circuit folding main electric locking use it is same pairing key
Spoon, with key and the pairing key linkage of each one hole door of season, when only the key in each manhole door is inserted on inter-locking panel,
Pairing key can be pulled up from inter-locking panel, so as to keep away the incidence rate that reduce further security incident, improve electric field
Security performance.
In order that those skilled in the art more fully understand technical scheme, it is below in conjunction with the accompanying drawings and concrete real
The present invention is described in further detail to apply mode.
Refer to Fig. 1 and Fig. 2, Fig. 1 is that main electric lock is a kind of concrete in electric field manhole door safety device provided by the present invention
The structural representation of embodiment；Fig. 2 is a kind of specific embodiment of disk that links in electric field manhole door safety device shown in Fig. 1
Structural representation.
In a kind of specific embodiment, electric field manhole door safety device provided by the present invention is used for electric cleaner, should
Electric field manhole door safety device includes the locking of control electric field manhole door or opener hole door lock, some with the manhole door lock
The manhole door key of matching, and the main electric lock 1 of the main circuit break-make of control electric field, and the main electricity matched with the main electric lock 1
Lock key；Also include inter-locking panel 2, offer the main lock core 21 matched with the main electric lock key on the inter-locking panel 2, and with it is each
Point lock core 22 that the manhole door key is matched one by one, arbitrary described point of lock core 22 is in separable shape with the manhole door key
During state, the main electric lock 1 controls the main circuit and disconnects.
It should be understood that the number of above-mentioned manhole door lock should be equal with the number of manhole door key, each manhole door
Lock is corresponding to be equipped with one manhole door key；The concrete setting number of manhole door lock should determine according to actually used situation, can be with every
Individual manhole door is equipped with one manhole door lock, it is also possible to which each manhole door is equipped with many manhole door lock.
Further, when above-mentioned main circuit is in channel status, each point lock core 22 is located with the manhole door key
In lock-out state, to ensure the strict linkage of main lock core 21 and point lock core 22, security performance is further improved.
It is if arbitrary point of lock core 22 can be separated with manhole door key, i.e., separable with this in the electric cleaner course of work
The corresponding manhole door of manhole door key in can opening when, the control main circuit of main electric lock 1 disconnects；That is, only
When all of manhole door is in the state that cannot be opened, main power source can be connected, and electric field can be powered；So, should
Manhole door safety device is integrated in the key of multiple manhole doors on inter-locking panel 2, and makes inter-locking panel 2 with control main circuit folding
Main electric lock 1, pairing key, is linked, only in each manhole door using same with the key and the pairing key of each one hole door of season
Key when being inserted on inter-locking panel 2, pairing key can be pulled up from inter-locking panel 2, so as to reduce further safe thing
Therefore incidence rate, improve the security performance of electric field.
Preferably, above-mentioned main electric lock 1 includes first base 11, and is arranged at first base 11 and in the main electric lock key
First lock core 12 being rotated by of spoon, the first lock core 12 is connected with the first expansion link 14, the first lock by the first rocking arm 13
Core 12 drives the first expansion link 14 to stretch out or retract relative to first base 11 when rotating；When main electric lock key insertion first is locked
Core 12 and when driving the first lock core 12 to rotate, the first rocking arm 13 just can drive the first expansion link 14 to stretch out or retraction shell, when the
When one expansion link 14 stretches out shell, the first expansion link 14 blocks main power switch so as to can not close energization, now manhole door key
Spoon just can be extracted；When the first expansion link 14 is retracted, the first expansion link 14 will not block main power switch so as to can open logical
Electricity；The break-make simple structure of main power source is realized by above-mentioned main electric lock 1, and can preferably realize main power source break-make with main electric lock
The linkage of key action, reliability is higher.
To realize the linkage between main electric lock 1 and main circuit, above-mentioned specific implementation is also not limited to, is theoretically come
Say, it would however also be possible to employ automatic control mode is realized.Specifically, the lock-out state of main electric lock 1 is detected, and status signal is reached into control
Element processed, control element judges the state of main electric lock 1, and when main electric lock 1 is in the lock state, control element control main circuit breaks
Open, when main electric lock 1 is in opening, control element control main circuit is powered.
In above-mentioned specific embodiment, manhole door lock provided by the present invention includes second base, and is arranged at described
Second base and in second lock core being rotated by of the manhole door key, second lock core turns to precalculated position
When, the manhole door lock is separable with the manhole door key；By the auto-lock function of manhole door lock, it is ensured that manhole door key
Only can pull up at predetermined position, it is ensured that the safe opening of manhole door.
Preferably, above-mentioned inter-locking panel 2 includes offering the guide rod 24 of some grooves 23, and the second rocking arm is provided with guide rod 24
25, telescopic block and the groove 23 of each point of lock core 22 are oppositely arranged, and the second rocking arm 25 is fixedly connected with main lock core 21；When arbitrary point of lock
When the telescopic block of core 22 is stretched out, the corresponding manhole door key of this point of lock core 22 can be pulled out, and corresponding manhole door can be opened,
Telescopic block is stretched out and into the groove 23 on guide rod 24, and the motion of the axial direction of guide rod 24 is limited by the telescopic block that this stretches out, led
Bar 24 cannot be moved, then the rocking arm for being driven by guide rod 24 cannot be moved, and the main lock core 21 being connected with rocking arm cannot be rotated and extracted
Main electric lock key, main circuit power-off；Only when the telescopic block of all points of lock cores 22 is in retracted mode, i.e., arbitrary manhole door key
Spoon cannot be extracted, and when all manhole doors are in lock-out state, the groove 23 of guide rod 24 is no longer influenced by the restriction of telescopic block, leads
Bar 24 can be moved and band motion rocker arm drives main lock core 21 to rotate and extract main electric lock key, could be led to its main electric lock 1 of opening
Electricity；The main lock core 21 that the structure is realized is higher with the linkage structure reliability of point lock core 22, and mechanical linkage is fundamentally avoided
The misconnection of main circuit is led to, and improves the security performance of electric cleaner.
It is pointed out that the ordinal number such as " first, second " described in text is to distinguish the different structure of same names,
Merely to description is convenient, certain order is not indicated that, more should not be construed as any restriction.
Except above-mentioned electric field manhole door safety device, the present invention also provides a kind of including above-mentioned electric field manhole door safety device
Electric cleaner, other Each parts of the electric cleaner refer to prior art, will not be described here.
Above to a kind of electric cleaner provided by the present invention and its electric field manhole door safety device and safety detection method
It is described in detail.Specific case used herein is set forth to the principle and embodiment of the present invention, above reality
The explanation for applying example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention,
These are improved and modification is also fallen in the protection domain of the claims in the present invention.
Claims (3)
1. a kind of locking of electric field manhole door safety device for electric cleaner, including control electric field manhole door or opener
Hole door lock, some manhole door keies matched with the manhole door lock, and the main electric lock of the main circuit break-make of control electric field
(1) the main electric lock key for, and with the main electric lock (1) matching；Characterized in that, also including inter-locking panel (2), the inter-locking panel
(2) offer the main lock core (21) matched with the main electric lock key on, and with each manhole door key match one by one point
Lock core (22), when arbitrary described point of lock core (22) is in separable state with the manhole door key, main electric lock (1) control
The main circuit disconnects；
The main electric lock (1) is including first base (11), and is arranged at the first base (11) and in the main electric lock key
The first lock core (12) being rotated by, first lock core (12) is connected with the first expansion link by the first rocking arm (13)
(14) drive first expansion link (14) to stretch out relative to the first base (11) when, first lock core (12) rotates or
Person retracts.
2. electric field manhole door safety device according to claim 1, it is characterised in that the manhole door lock includes the second bottom
Seat, and it is arranged at the second base and in second lock core being rotated by of the manhole door key, second lock core
When turning to precalculated position, the manhole door lock is separable with the manhole door key.
3. electric field manhole door safety device according to claim 1 and 2, it is characterised in that the inter-locking panel (2) is including opening
The guide rod (24) of some grooves (23) is provided with, the second rocking arm (25), each described point of lock core (22) are installed on the guide rod (24)
Telescopic block be oppositely arranged with the groove (23), second rocking arm (25) is fixedly connected with the main lock core (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510108585.3A CN104722404B (en) | 2014-03-12 | 2015-03-12 | Electric dust collector and electric field manhole door safety device for same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014100906228 | 2014-03-12 | ||
| CN201410090622.8A CN103878067A (en) | 2014-03-12 | 2014-03-12 | Electric-bag dust remover and electric field manhole door safety device |
| CN201510108585.3A CN104722404B (en) | 2014-03-12 | 2015-03-12 | Electric dust collector and electric field manhole door safety device for same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104722404A CN104722404A (en) | 2015-06-24 |
| CN104722404B true CN104722404B (en) | 2017-04-12 |
Family
ID=50947386
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410090622.8A Pending CN103878067A (en) | 2014-03-12 | 2014-03-12 | Electric-bag dust remover and electric field manhole door safety device |
| CN201510108585.3A Active CN104722404B (en) | 2014-03-12 | 2015-03-12 | Electric dust collector and electric field manhole door safety device for same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410090622.8A Pending CN103878067A (en) | 2014-03-12 | 2014-03-12 | Electric-bag dust remover and electric field manhole door safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103878067A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878067A (en) * | 2014-03-12 | 2014-06-25 | 福建龙净环保股份有限公司 | Electric-bag dust remover and electric field manhole door safety device |
| CN110485830B (en) * | 2019-08-06 | 2021-02-19 | 中国电建集团华东勘测设计研究院有限公司 | Safety lock system suitable for offshore converter station valve hall |
| CN111774182A (en) * | 2020-07-29 | 2020-10-16 | 青岛鼎信工业安全设备有限公司 | Electric precipitator overhauls safety interlock system |
| CN115178377B (en) * | 2022-06-28 | 2024-07-05 | 武汉钢铁有限公司 | Gas electrostatic dust-removing safety interlocking system and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201375930Y (en) * | 2009-01-20 | 2010-01-06 | 清华同方(鞍山)环保设备股份有限公司 | Safety interlock control system device for electrostatic precipitator |
| CN102606008A (en) * | 2012-03-19 | 2012-07-25 | 深圳市禾望电气有限公司 | Cabinet type device door lock system and control method thereof |
| CN202497943U (en) * | 2012-01-31 | 2012-10-24 | 安徽恒意环保科技有限公司 | Novel double-layer manhole door |
| CN103551006A (en) * | 2013-11-13 | 2014-02-05 | 福建龙净环保股份有限公司 | Electric-bag dust collector, electric field manhole door safety device for same and safety detection method |
| CN103878067A (en) * | 2014-03-12 | 2014-06-25 | 福建龙净环保股份有限公司 | Electric-bag dust remover and electric field manhole door safety device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009062127A (en) * | 2007-09-05 | 2009-03-26 | Toshiba Elevator Co Ltd | Emergency elevator control system |
| KR101167979B1 (en) * | 2012-01-30 | 2012-07-23 | 동영전기 주식회사 | A safe switch-gear built-in an automatic compulsory power cut work induction function |
-
2014
- 2014-03-12 CN CN201410090622.8A patent/CN103878067A/en active Pending
-
2015
- 2015-03-12 CN CN201510108585.3A patent/CN104722404B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201375930Y (en) * | 2009-01-20 | 2010-01-06 | 清华同方(鞍山)环保设备股份有限公司 | Safety interlock control system device for electrostatic precipitator |
| CN202497943U (en) * | 2012-01-31 | 2012-10-24 | 安徽恒意环保科技有限公司 | Novel double-layer manhole door |
| CN102606008A (en) * | 2012-03-19 | 2012-07-25 | 深圳市禾望电气有限公司 | Cabinet type device door lock system and control method thereof |
| CN103551006A (en) * | 2013-11-13 | 2014-02-05 | 福建龙净环保股份有限公司 | Electric-bag dust collector, electric field manhole door safety device for same and safety detection method |
| CN103878067A (en) * | 2014-03-12 | 2014-06-25 | 福建龙净环保股份有限公司 | Electric-bag dust remover and electric field manhole door safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103878067A (en) | 2014-06-25 |
| CN104722404A (en) | 2015-06-24 |
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