CN202373487U - Linkage structure of low-pressure connecting box - Google Patents
Linkage structure of low-pressure connecting box Download PDFInfo
- Publication number
- CN202373487U CN202373487U CN2011205701688U CN201120570168U CN202373487U CN 202373487 U CN202373487 U CN 202373487U CN 2011205701688 U CN2011205701688 U CN 2011205701688U CN 201120570168 U CN201120570168 U CN 201120570168U CN 202373487 U CN202373487 U CN 202373487U
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- CN
- China
- Prior art keywords
- lock core
- link box
- chamber door
- lock
- waling stripe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Disclosed is a linkage structure of a low-pressure connecting box. The linkage structure of the low-pressure connecting box comprises an upstream equipment box, a connecting box and a downstream equipment box, wherein the door lock of the upstream equipment box is provided with a lock core C and a key, the door lock of the downstream equipment box is provided with a lock core D and a key, a double lock provided with a lock core A and a lock core B is arranged on the connecting box door, the lock core A and the lock core C of the upstream equipment box have the same structure and are provided with only one key (a), and the lock core B and the lock core D of the downstream equipment box have the same structure and are provided with only one key (b). The lock core A and the lock core B are provided with an eccentric retaining block respectively, and when either of the lock core moves to a locking position, the eccentric retaining block of the lock core blocks the eccentric retaining block of the other lock core to move to the locking position. The linkage structure of the low-pressure connecting box has a plurality of linkage functions and high reliability, and guarantees safety of operators.
Description
Technical field
The utility model belongs to the technical field of mains switch cabinet, is specifically related to a kind of low pressure link box linkage structure that is applicable to that nuclear power station uses.
Background technology
The low pressure link box that nuclear power station uses is installed on the position, middle reaches of electric wiring; Electric energy is come link box from the conveying of upstream equipment case; Be transported to the upstream device case by link box again, link box is provided with killer switch, and whether the energising of the killer switch control upstream device case of link box.
The low pressure link box that nuclear power station uses is a kind of very high controller switching equipment of property safe and reliable to operation that requires; But the operation chain function of existing low pressure link box does not meet the safety requirements of nuclear power station to this kind equipment; The possibility that has misoperation; Under unsafe condition, still can open chamber door, i.e. the charged unpacking operation of possibility, under cover bigger potential safety hazard.
Summary of the invention
The purpose of the utility model is that a kind of low pressure link box linkage structure is provided in order to overcome the problems referred to above, and is not charged when it can guarantee to unpack operation, guarantees operating personnel's personal safety.
For realizing above-mentioned purpose; The low pressure link box linkage structure of the utility model comprises upstream equipment case, link box, upstream device case; Upstream equipment case, link box, upstream device case are respectively equipped with chamber door, and upstream equipment case, upstream device case correspondence are provided with the chamber door lock, and the chamber door lock of upstream equipment case is provided with lock core C and key; The chamber door lock of upstream device case is provided with lock core D and key, and each lock core is provided with the key pulling-preventing mechanism that prevents that key from being pulled away at lockset position of coupler; Be provided with killer switch in the link box, killer switch is provided with operating grip, and operating grip is installed in rotation on the link box chamber door; The upstream equipment case is electrically connected to the killer switch of link box, and the killer switch of link box is electrically connected to the upstream device case; Its main feature is; Operating grip can be connected with killer switch around the waling stripe that self central axis rotates through one; The inner of waling stripe is fixedly connected with the killer switch parts and controls the divide-shut brake of killer switch, and operating grip is provided with square shrinkage pool, and the outer end of waling stripe also is square; When the chamber door of link box was closed, the loose fit ground, square outer end of waling stripe inserted in the operating grip square shrinkage pool; Also one is fixed with eccentric projection in the outer end of waling stripe; On the chamber door of link box, be provided with the eccentric orfice corresponding with the eccentric projection shape; When waling stripe turned to the separating brake position of killer switch, the eccentric orfice on the link box chamber door was aimed at the eccentric projection of waling stripe outer end; On the link box chamber door, also be provided with duplex lock, said duplex lock has lock core A and lock core B; Identical and both the only supporting same key a of the lock core C-structure of lock core A and upstream equipment case, identical and both the only supporting same key b of the lock core D structure of lock core B and upstream device case; Lock core A and lock core B are equipped with eccentric block, and when one of them lock core turned to locked position of coupler, the eccentric block that the eccentric block of this lock core blocks another lock core turned to locked position of coupler;
Lock core A also drives and is connected with a transverse bolt, and lock core A and transverse bolt form following matching relationship: when lock core A turned to locked position of coupler, transverse bolt was promoted by lock core A and protruding; When lock core A turned to lockset position of coupler, transverse bolt was oppositely spurred and inwardly retraction by lock core A;
Waling stripe also is fixedly connected with an interlocking member; Interlocking member and transverse bolt form following matching relationship: when the inside retraction of transverse bolt and interlocking member rotated to the separating brake position in company with operating grip, interlocking member stopped that transverse bolt is protruding.
The utlity model has following advantage and effect:
The utility model chain function is many, and reliability is high, guarantees particularly that link box is only swum above that just to allow to open box door operation when equipment box is in open position; And when guaranteeing that the upstream device case is unpacked door operation, the killer switch of link box is in off-state, realizes not charged unpacking operation, guarantees operating personnel's personal safety.
Description of drawings
Fig. 1 is the electrical connection sketch map of the utility model upstream equipment case, link box, upstream device case.
Fig. 2 is the link box internal structure sketch map of the utility model embodiment.
Fig. 3 is waling stripe among Fig. 2, link box chamber door, operating grip three assembly relation sketch map.
Fig. 4 is an operating grip structural representation among Fig. 3.
Fig. 5 is a waling stripe structural representation among Fig. 3.
Fig. 6 is the schematic side view of structure shown in Figure 5.
Fig. 7 is link box chamber door partial structurtes sketch mapes.
Fig. 8 is that operating grip concerns sketch map in the position of eccentric projection and eccentric orfice when turning to the separating brake position.
Fig. 9 is that operating grip concerns sketch map in the position of eccentric projection and eccentric orfice when turning to closing position.
Figure 10 is two lock core locked position of coupler part cross reference sketch mapes of duplex lock.
Figure 11 is the sketch map that one of them lock core of duplex lock stops another lock core.
Figure 12 is killer switch operating grip and duplex lock matching relationship sketch map when being in "on" position.
Figure 13 is that killer switch is in operating grip and duplex lock matching relationship sketch map when breaking the lock state.
Embodiment
Shown in Figure 1, low pressure link box linkage structure comprises upstream equipment case 2, link box 1, upstream device case 3, and upstream equipment case 2 is provided with chamber door 21; Link box 1 is provided with chamber door 11; Upstream device case 3 is provided with chamber door 31, and upstream equipment case chamber door 21, upstream device case chamber door 31 correspondences are provided with the chamber door lock, and the chamber door lock of upstream equipment case is provided with lock core C and key a; The chamber door lock of upstream device case is provided with lock core D and key b, and each lock core is provided with the key pulling-preventing mechanism that prevents that key from being pulled away at lockset position of coupler.Fig. 1, Figure 10, shown in Figure 11 also are provided with duplex lock 15 on link box chamber door panel, said duplex lock 15 has lock core A and lock core B; Identical and both the only supporting same key a of the lock core C-structure of lock core A and upstream equipment case, identical and both the only supporting same key b of the lock core D structure of lock core B and upstream device case.Fig. 1, Fig. 2, shown in Figure 3 are provided with killer switch 12 in the link box 1, killer switch 12 is provided with operating grip 13, and operating grip 13 is installed in rotation on the link box chamber door 11; Upstream equipment case 2 is electrically connected to the killer switch 12 of link box, and the killer switch 12 of link box is electrically connected to upstream device case 3; Operating grip 13 can be connected with killer switch 12 around the waling stripe 14 that self central axis rotates through one, and the inner of waling stripe 14 is fixedly connected with the killer switch rotatable parts and controls the divide-shut brake of killer switch 12.Fig. 4, Fig. 5, Fig. 8, shown in Figure 9, operating grip 13 are provided with square shrinkage pool 131, and the outer end 141 of waling stripe also is square; When the chamber door 11 of link box is closed; The 141 loose fits ground, square outer end of waling stripe inserts in the operating grip square shrinkage pool 131, because the outer end 141 of waling stripe all is a square with operating grip shrinkage pool 131, therefore when operating grip 13 rotates; Can drive waling stripe 14 rotates; Because the 141 loose fits ground, outer end of waling stripe inserts in the operating grip shrinkage pool 131, therefore when link box chamber door 11 was opened, operating grip 13 can outwards move in company with chamber door 11 again; Waling stripe 14 then is fixed on the killer switch 12 motionless, and both can temporarily separate; Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9 go back one in the outer end 141 of waling stripe and are fixed with eccentric projection 142, on the chamber door 11 of link box, are provided with the eccentric orfice corresponding with the eccentric projection shape 112; Shown in Figure 8, when waling stripe 14 turns to the separating brake position of killer switch, the eccentric projection 142 that the eccentric orfice 112 on the link box chamber door is aimed at the waling stripe outer end, eccentric projection 142 can be passed eccentric orfice 112, so link box chamber door 11 can be opened; Shown in Figure 9, when waling stripe 14 turned to the closing position of killer switch, the eccentric projection 142 of waling stripe outer end staggered with the eccentric orfice 112 on the link box chamber door, and eccentric projection 142 can be passed eccentric orfice 112, so link box chamber door 11 can not be opened.Fig. 1, Figure 10, shown in Figure 11, link box lock core A is provided with eccentric block 161, and lock core B also is provided with eccentric block 162; And the locked position of coupler of the locked position of coupler of the eccentric block 161 of lock core A and the eccentric block 162 of lock core B partly intersects, so both can not be positioned at locked position of coupler simultaneously, as in Figure 10; Lock core A turns to locked position of coupler; Its eccentric block 161 is positioned at locked position of coupler, and the locked position of coupler of the eccentric block 162 of lock core B is shown in dotted line among Figure 10, in Figure 11; When lock core A turns to locked position of coupler; The eccentric block 162 of lock core B is blocked by the eccentric block 161 of lock core A, and the eccentric block 162 of lock core B can't turn to locked position of coupler simultaneously, and promptly lock core B can't locking; Equally, when lock core B turned to locked position of coupler, the eccentric block 161 of lock core A was blocked by the eccentric block 162 of lock core B, and lock core A can't turn to locked position of coupler simultaneously.
Figure 12, shown in Figure 13, lock core A also drive and be connected with a transverse bolt 17, and both form following matching relationship lock core A and transverse bolt 17: when lock core A turned to locked position of coupler, transverse bolt 17 was promoted by lock core A and protruding; When lock core A turned to lockset position of coupler, transverse bolt 17 was oppositely spurred and inwardly retraction by lock core A.Waling stripe 14 also is fixedly connected with a square interlocking member 18; Both form following matching relationship square interlocking member 18 and transverse bolt 17: when transverse bolt 17 inside retractions and interlocking member 18 rotated to the separating brake position in company with operating grip, interlocking member 18 stopped that transverse bolt 17 is protruding.
The foregoing description forms following linkage relationship:
(1). identical and both the only supporting same key a of lock core C and lock core A structure, and also lock core C, lock core A can't extract key when lockset position of coupler, mean that lock core C and lock core A can't be in lockset position of coupler simultaneously; Equally, identical and both the only supporting same key b of lock core D and lock core B structure, and also lock core D, lock core B can't extract key when lockset position of coupler, mean that lock core D and lock core B can't be in lockset position of coupler simultaneously.
(2). Figure 10, shown in Figure 11; The lock core A and the lock core B of link box are equipped with eccentric block; And when one of them lock core turns to locked position of coupler; The eccentric block that the eccentric block of this lock core blocks another lock core turns to locked position of coupler, so lock core A and lock core B can not turn to locked position of coupler simultaneously, and the key a of lock core A, the key b of lock core B can not extract simultaneously; Mean that lock core C and lock core D can't unblank simultaneously, promptly open upstream equipment case chamber door 21 and can not open simultaneously with upstream device case chamber door 31 and operate.
(3). shown in Figure 9; When the operating grip 13 of link box killer switch turns to "on" position; Waling stripe 14 makes killer switch 12 be in "on" position, and the eccentric projection 142 of waling stripe outer end is no longer aimed at eccentric orfice 112 on the chamber door of link box, so link box chamber door 11 is caught on by the eccentric projection 142 of waling stripe outer end; Can not open, mean that can not open chamber door 11 when link box is charged operates; Have only when the operating grip 13 of link box killer switch turns to the separating brake position; Waling stripe 14 turns to the separating brake position in company with operating grip; The eccentric projection 142 of waling stripe outer end just can be aimed at eccentric orfice 112 on the chamber door of link box; Therefore at this moment just allow link box chamber door 11 to open, as shown in Figure 8; Shown in Figure 13; And when the link box chamber door is opened, when operating grip and interlocking member turn to the separating brake position, square interlocking member 18 stops that transverse bolt 17 is protruding, lock core A can only be in lockset position of coupler; Key a is tied down by lock core A; Lock core C can not open, and send electricity so under this kind state, can not open upstream equipment case chamber door to link box, guarantees when link box is unpacked operation not charged.
(4). shown in Figure 12, when operating grip 13 was positioned at closing position, lock core A was in locked position of coupler; Lock core B is in lockset position of coupler, and key b can not extract from lock core B, means that can not hold key b opens chamber door 31 to upstream device case 3; Therefore; When link box 1 closes a floodgate when sending electricity downstream, upstream device case 3 can not be opened chamber door 31, guarantees that this upstream device case 3 just allows open chamber door 31 when only the link box 1 of trip is in disconnected lock state above that and operates.
Claims (1)
1. a low pressure link box linkage structure comprises upstream equipment case, link box, upstream device case; Upstream equipment case, link box, upstream device case are respectively equipped with chamber door; Upstream equipment case, upstream device case correspondence are provided with the chamber door lock; The chamber door lock of upstream equipment case is provided with lock core C and key, and the chamber door lock of upstream device case is provided with lock core D and key, and each lock core is provided with the key pulling-preventing mechanism that prevents that key from being pulled away at lockset position of coupler; Be provided with killer switch in the link box, killer switch is provided with operating grip, and operating grip is installed in rotation on the link box chamber door; The upstream equipment case is electrically connected to the killer switch of link box, and the killer switch of link box is electrically connected to the upstream device case; It is characterized in that: operating grip can be connected with killer switch around the waling stripe that self central axis rotates through one; The inner of waling stripe is fixedly connected with the killer switch parts and controls the divide-shut brake of killer switch; Operating grip is provided with square shrinkage pool; The outer end of waling stripe also is square, and when the chamber door of link box was closed, the loose fit ground, square outer end of waling stripe inserted in the operating grip square shrinkage pool; Also one is fixed with eccentric projection in the outer end of waling stripe; On the chamber door of link box, be provided with the eccentric orfice corresponding with the eccentric projection shape; When waling stripe turned to the separating brake position of killer switch, the eccentric orfice on the link box chamber door was aimed at the eccentric projection of waling stripe outer end; On the link box chamber door, also be provided with duplex lock, said duplex lock has lock core A and lock core B; Identical and both the only supporting same key a of the lock core C-structure of lock core A and upstream equipment case, identical and both the only supporting same key b of the lock core D structure of lock core B and upstream device case; Lock core A and lock core B are equipped with eccentric block, and when one of them lock core turned to locked position of coupler, the eccentric block that the eccentric block of this lock core blocks another lock core turned to locked position of coupler;
Lock core A also drives and is connected with a transverse bolt, and lock core A and transverse bolt form following matching relationship: when lock core A turned to locked position of coupler, transverse bolt was promoted by lock core A and protruding; When lock core A turned to lockset position of coupler, transverse bolt was oppositely spurred and inwardly retraction by lock core A;
Waling stripe also is fixedly connected with an interlocking member; Interlocking member and transverse bolt form following matching relationship: when the inside retraction of transverse bolt and interlocking member rotated to the separating brake position in company with operating grip, interlocking member stopped that transverse bolt is protruding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205701688U CN202373487U (en) | 2011-12-31 | 2011-12-31 | Linkage structure of low-pressure connecting box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205701688U CN202373487U (en) | 2011-12-31 | 2011-12-31 | Linkage structure of low-pressure connecting box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202373487U true CN202373487U (en) | 2012-08-08 |
Family
ID=46597181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205701688U Expired - Lifetime CN202373487U (en) | 2011-12-31 | 2011-12-31 | Linkage structure of low-pressure connecting box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202373487U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154317A (en) * | 2017-06-26 | 2017-09-12 | 北京潞电电气设备有限公司 | A kind of closedown structure and the low voltage liaison net case with it |
| TWI635527B (en) * | 2017-05-09 | 2018-09-11 | 陳錫瑜 | Improved interlocking device used in between circuit breakers |
-
2011
- 2011-12-31 CN CN2011205701688U patent/CN202373487U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI635527B (en) * | 2017-05-09 | 2018-09-11 | 陳錫瑜 | Improved interlocking device used in between circuit breakers |
| CN107154317A (en) * | 2017-06-26 | 2017-09-12 | 北京潞电电气设备有限公司 | A kind of closedown structure and the low voltage liaison net case with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |