CN107910215B - A kind of explosion-proof tank for capableing of door opening electrical outage - Google Patents
A kind of explosion-proof tank for capableing of door opening electrical outage Download PDFInfo
- Publication number
- CN107910215B CN107910215B CN201810020743.3A CN201810020743A CN107910215B CN 107910215 B CN107910215 B CN 107910215B CN 201810020743 A CN201810020743 A CN 201810020743A CN 107910215 B CN107910215 B CN 107910215B
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- plate
- door
- switch
- slot
- outside
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0221—Locks; Latches
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Casings For Electric Apparatus (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses the explosion-proof tanks that one kind is capable of door opening electrical outage, the cabinet of opening is equipped with including front, side be open equipped with doorframe, the hinged door-plate in the other side, the extension door-plate of connection and doorframe sealing cooperation on the outside of door-plate, extend and connects the first rack gear on the inside of door-plate, oil cylinder is connected on the inside of doorframe, the second rack gear that oil cylinder connection is correspondingly arranged with the first rack gear, first switch corresponding with door-plate is extended is equipped on the inside of doorframe, second switch is installed, first switch and second switch are connected in same control loop on the outside of cabinet；It is equipped with L-type on the outside of articulated shaft and seals push plate, mounting bracket on the outside of cabinet, the breaker device and thrust device of connection and L-type sealing push plate compression fit on bracket.Advantages of the present invention: present apparatus knot opens the door and shutdown is all made of interlocking mechanism, easy to operate, securely and reliably, when door is opened, it can guarantee safety, at closing time in the state of power-off in explosion-proof tank, after door-plate and door frame contact, door is not easy to loosen by automatically lock.
Description
Technical field
The present invention relates to explosion-proof tank technical fields, more particularly to a kind of explosion-proof tank for capableing of door opening electrical outage.
Background technique
Flammable explosion hazard gases or powder are often generated in the production process of the industrial departments such as petroleum, coal, weaving, chemistry
Dirt, the surrounding air of this kind of production unit often have explosivity because being contaminated with flammable explosion hazard gases or dust, once it is bright
Fire, which is lighted, to be occurred heavy explosion and causes a serious accident.Appliance working equipment in above-mentioned environment produces in the process of running
Raw electric spark is the one of the major reasons for causing this kind of accident, because extraneous explosive gases are often through electrical equipment
Housing slot is deep into the inside of electrical equipment；Superheating phenomenon can occur in the process of running for electrical equipment, can also set from electric appliance
Flammable explosion hazard gases is decomposed to give off in insulating oil or other organic insulation substrates in standby；So, once electrical equipment generates
The flammable explosion hazard gases of spark, interior of shell may be ignited and explode, while it is also possible to ignite in exterior space
Flammable explosion hazard gases and cause a serious accident.
For the generation for avoiding above-mentioned accident, the electric appliance to work in flammable explosive atmosphere is usually put into a sealing
Flameproof cabinet in, to completely cut off flammable explosion hazard gases with the contact of electric appliance, therefore work must be powered off when opening the door, in explosion-proof tank
Industry, at closing time, it is also desirable to which good seal performance cannot allow flammable explosion hazard gases or dust to enter in cabinet, otherwise two kinds of situations
All have the risk exploded.And used explosion-proof tank needs to power off manually when opening the door at this stage, it cannot be from dynamic circuit breaker
Electricity, this there is this great risk, and at closing time, common way is that gasket is arranged between the door-plate for the distribution box,
Preferable sealing is implemented to cabinet, is then achieved the purpose that explosion-proof.But the door-plate of such most distribution box and close at doorframe
It is not ideal enough to seal effect, easily voluntarily loosens, then causes some potential safety problems.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the one kind proposed is capable of door opening electrical outage
Explosion-proof tank.
To achieve the goals above, present invention employs following technical solutions:
A kind of explosion-proof tank for capableing of door opening electrical outage, including cabinet are equipped with opening in the front of cabinet, it is characterised in that:
The side of opening is equipped with doorframe, the first slot is equipped in doorframe, in the other side of opening by hinged axis connection door-plate, in door
The outside of plate is equipped with the second slot, and door-plate extends door-plate by the connection of the second slot；
Extend door-plate side be equipped with first sliding groove, the centre of first sliding groove be equipped with the first plate, the first plate with
The side wall of first sliding groove is arranged in parallel, and the first plate and the first slot are mating, the first sliding groove difference of the first plate two sides
It is corresponding mating with the doorframe side wall of corresponding first slot two sides；
It is equipped with second sliding slot in the other side for extending door-plate, is equipped with the second plate, the second plate in the centre of second sliding slot
It is arranged in parallel with the side wall of second sliding slot, the second plate and the second slot are mating, the second sliding slot point of the second plate two sides
It is corresponding not mating with the door-plate side wall of corresponding second slot two sides；
It is fixedly connected with the first rack gear on the inside of door-plate extending, oil cylinder, oil cylinder are connected by fixed plate in the inside of doorframe
Piston rod on connect the second rack gear, the first rack gear is correspondingly arranged with the second rack gear, be equipped with first switch in the inside of doorframe, the
One switch and extension door-plate corresponding matching install second switch in the outside of cabinet, and first switch and second switch are connected to together
In one control loop；
L-type is equipped in the outside of articulated shaft and seals push plate, and L-type sealing push plate is connected to the outer of cabinet and door-plate hinged place
Side connects breaker device on bracket and thrust device, breaker device and thrust device is pressed in the outside mounting bracket of cabinet
It is a tight fit in the outside of L-type sealing push plate；
Breaker device includes the fixed cylinder of side opening, in the open-mouth mating connection end cap of fixed cylinder, in fixed cylinder
Mating connection slide plate and push rod, the upside of push rod pass through end cap and stretch out outside fixed cylinder, inlay the first ball in the end of push rod, the
One ball contacts L-type and seals push plate, and baffle ring is equipped on push rod, and baffle ring is arranged in fixed cylinder, is equipped with the in the upside of slide plate
One spring is equipped with second spring in the downside of slide plate, is socketed on push rod on the first spring, also installs third in the upside of slide plate
Switch, the bottom corresponding matching of third switch and push rod, third switch on the main road for the power supply circuit being connected in explosion-proof tank；
Thrust device includes fixes sleeve, and a slide cartridge that can be slided is socketed in fixes sleeve, is equipped in slide cartridge
Spring and the second ball, spring are in compressive state, and one end holds out against bracket, the other end holds out against the second ball, and the second ball connects
It touches L-type and seals push plate；
It is equipped with fixture block in the L-type sealing push plate end of door-plate side, card slot is equipped in the outside of door-plate, in door plate opening
When, fixture block and card slot are corresponded to and are engaged by clamping, and the 4th switch and electromagnet are installed in card slot, the 5th is also installed on door-plate and opens
It closes, the 4th switch and the 5th switch are connected on electromagnet power-on circuit.
Preferably, it is respectively mounted a L-type snap-gauge in the inner side and outer side of the door-plate, L-type snap-gauge forms U-shaped with door-plate
The opening direction of slot, U-type groove is arranged to the extension door-plate, is equipped with a card slot in each L-type snap-gauge, is clamped bullet in card slot
Spring pressing plate, spring bearer plate and extension door-plate corresponding matching are equipped with one group of protrusion in the inner side and outer side for extending door-plate.
Preferably, the card slot is opening slot structure, is equipped with a U-shaped card slot in the two sides of card slot, spring bearer plate is
The two sides correspondence of arc panel, spring bearer plate is connected in corresponding U-shaped card slot.
Preferably, knob is connected in the outside for extending door-plate.
Preferably, backing plate, the fixed fixed plate of backing plate support are fixedly connected on the inside of the extension door-plate.
Preferably, the outer corners of the L-type sealing push plate are arcuate structure.
The present invention has the advantages that present apparatus structure is simple, opens the door and shutdown is all made of interlocking mechanism, easy to operate, peace
It is complete reliable, when door is opened, it can guarantee safety in the state of power-off in explosion-proof tank, at closing time, when door-plate and door frame contact
Afterwards, door is by automatically lock, and door-plate is not easy to loosen, at low cost.
Detailed description of the invention
Fig. 1 is basic structure schematic diagram of the invention；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
Fig. 3 is the portion the B enlarged drawing of Fig. 1；
Fig. 4 is the portion the C enlarged drawing of Fig. 1.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, one kind provided by the invention is capable of the explosion-proof tank of door opening electrical outage, including cabinet
1, it is equipped with opening in the front of cabinet 1, doorframe 4 is equipped in the side of opening, the first slot 5 is equipped in doorframe 4, in opening
The other side connects door-plate 3 by articulated shaft 2, is equipped with the second slot 6 in the outside of door-plate 3, door-plate 3 is connected by the second slot 6
Extend door-plate 7.
It is equipped with first sliding groove 8 in the side for extending door-plate 7, is equipped with the first plate 9 in the centre of first sliding groove 8, first inserts
Plate 9 and the side wall of first sliding groove 8 are arranged in parallel, and the first plate 9 and the first slot 5 are mating, and the first of 9 two sides of the first plate
Sliding slot 8 is corresponding mating with 4 side wall of doorframe of corresponding first slot, 5 two sides respectively.
It is equipped with second sliding slot 10 in the other side for extending door-plate 7, is equipped with the second plate 11 in the centre of second sliding slot 10, the
Two plates 11 and the side wall of second sliding slot 10 are arranged in parallel, and the second plate 11 and the second slot 6 are mating, the second 11 liang of plate
The second sliding slot 10 of side is corresponding mating with 3 side wall of door-plate of corresponding second slot, 6 two sides respectively.
It is fixedly connected with the first rack gear 16 in the inside for extending door-plate 7, oil cylinder is connected by fixed plate 13 in the inside of doorframe 4
14, backing plate 44, the fixed fixed plate 13 of the support of backing plate 44 are fixedly connected in the inside for extending door-plate 7.The piston rod of oil cylinder 14
The second rack gear 17 of upper connection, the first rack gear 16 are correspondingly arranged with the second rack gear 17, are equipped with first switch 18 in the inside of doorframe 4,
First switch 18 and extension 7 corresponding matching of door-plate install second switch 19 in the outside of cabinet 1, and first switch 18 is opened with second
19 are closed to be connected in same control loop.First switch 18 is contacted at closing time, extending door-plate 7, first switch 18 is closed oil cylinder
14 it is electric, the first rack gear 16 is released forward and engages securing elongated door-plate 7 with the second rack gear 17, when needing to open the door, presses the
The power-off of two switches 19,14 power loss of oil cylinder, piston rod are withdrawn, and the first rack gear 16 is detached from the second rack gear 17, push extension door-plate open manually
7。
It is respectively mounted a L-type snap-gauge 20 in the inner side and outer side of the door-plate 3, L-type snap-gauge 20 and door-plate 3 form U-type groove,
The opening direction of U-type groove is arranged to the extension door-plate 7, a card slot 20.1 is equipped in each L-type snap-gauge 20, in card slot
20.1 clamping spring bearer plates 22, spring bearer plate 22 and extension 7 corresponding matching of door-plate, are all provided in the inner side and outer side for extending door-plate 7
There is one group of protrusion 23.The card slot 20.1 is opening slot structure, is equipped with a U-shaped card slot, spring in the two sides of card slot 20.1
Pressing plate 22 is arc panel, and the two sides correspondence of spring bearer plate 22 is connected in corresponding U-shaped card slot.Extend the outer of door-plate 7 described
Side connection knob 45.
L-type is equipped in the outside of articulated shaft 2 and seals push plate 25, and the outer corners that L-type seals push plate 25 are arcuate structure, L
Type sealing push plate 25 is connected to the outside of 3 hinged place of cabinet 1 and door-plate, in the outside mounting bracket 26 of cabinet 1, on bracket 26
Breaker device 12 and thrust device 21, breaker device 12 and the equal compression fit of thrust device 21 are connected in L-type sealing push plate 25
Outside.
The fixed cylinder 31 of breaker device 12 including side opening, in the open-mouth mating connection end cap 36 of fixed cylinder 31,
Mating connection slide plate 38 and push rod 32 in fixed cylinder 31, the upside of push rod 32 passes through end cap 36 and stretches out outside fixed cylinder 31, in push rod
The first ball 37 is inlayed in 32 end, and the first ball 37 contacts L-type and seals push plate 25, and baffle ring 33, baffle ring are equipped on push rod 32
33 are arranged in fixed cylinder 31, are equipped with the first spring 34 in the upside of slide plate 38, are equipped with second spring 39 in the downside of slide plate 38,
It is socketed on push rod 32 on first spring 34, third switch 35, third switch 35 and push rod 32 is also installed in the upside of slide plate 38
Bottom corresponding matching, third switch 35 is connected on the main road of the power supply circuit in explosion-proof tank.
Thrust device 21 includes fixes sleeve 40, a slide cartridge 41 that can be slided is socketed in fixes sleeve 40, in cunning
Spring 42 and the second ball 43 are equipped in cylinder 41, spring 42 is in compressive state, and one end holds out against bracket 26, the other end holds out against the
Two balls 43, the second ball 43 contact L-type and seal push plate 25.
It is equipped with fixture block 27 in L-type sealing 25 end of push plate of 3 side of door-plate, fixture block 27 uses iron block, in the outside of door-plate 3
Equipped with card slot 28, when door-plate 3 opens the door, the 4th switch 29 is installed in fixture block 27 and the corresponding clamping engagement of card slot 28 in card slot 28
With electromagnet 30, the 5th switch 24 is also installed on door-plate 3, the 4th switch 29 and the 5th switch 24 are connected to the energization of electromagnet 30
On circuit.
When enabling, by pulling knob 45 to be turned out door-plate 3 around articulated shaft 2, when door-plate 3 is turned out, door
Plate 3 pushes L-type sealing push plate 25 to be displaced outwardly, and L-type sealing push plate 25 is rotated centered on its top point, and push rod 32 compresses third
Switch 35, so that the down circuitry in explosion-proof tank, when door-plate 3 fully opens, fixture block 27 is connected in card slot 28, and fixture block 27 is pressed
Tight 4th switch 29, so that door-plate 3 is fixed, is constantly in it and is opened so that electromagnet 30 obtains electric and adsorbs fixture block 27
State, when need at closing time, press the 5th switch 24 make 30 power loss of electromagnet be detached from fixture block 27, rotate door-plate 3 closed
Door.
Claims (1)
1. one kind is capable of the explosion-proof tank of door opening electrical outage, including cabinet (1), it is equipped with opening in the front of cabinet (1), feature exists
In: doorframe (4) are equipped in the side of opening, are equipped with the first slot (5) in doorframe (4), are passed through in the other side of opening hinged
Axis (2) connects door-plate (3), is equipped with the second slot (6) in the outside of door-plate (3), door-plate (3) is prolonged by the second slot (6) connection
Stretch door-plate (7)；
First sliding groove (8) are equipped in the side for extending door-plate (7), are equipped with the first plate (9) in the centre of first sliding groove (8), the
One plate (9) and the side wall of first sliding groove (8) are arranged in parallel, and the first plate (9) and the first slot (5) are mating, and first inserts
The first sliding groove (8) of plate (9) two sides is corresponding mating with doorframe (4) side wall of corresponding first slot (5) two sides respectively；
Second sliding slot (10) are equipped in the other side for extending door-plate (7), are equipped with the second plate in the centre of second sliding slot (10)
(11), the second plate (11) and the side wall of second sliding slot (10) are arranged in parallel, and the second plate (11) is matched with the second slot (6) grafting
It closes, the second sliding slot (10) of the second plate (11) two sides is corresponding with door-plate (3) side wall of corresponding second slot (6) two sides respectively to insert
Connect cooperation；
The first rack gear (16) are fixedly connected on the inside of door-plate (7) extending, are connected in the inside of doorframe (4) by fixed plate (13)
Oil cylinder (14) connects the second rack gear (17) on the piston rod of oil cylinder (14), and the first rack gear (16) is corresponding with the second rack gear (17) to be set
It sets, is equipped with first switch (18) in the inside of doorframe (4), first switch (18) and extension door-plate (7) corresponding matching, in cabinet
(1) second switch (19) are installed in outside, and first switch (18) and second switch (19) are connected in same control loop；
It is equipped with L-type sealing push plate (25) in the outside of articulated shaft (2), L-type sealing push plate (25) is connected to cabinet (1) and door-plate
(3) outside of hinged place connects breaker device (12) and is pushed away on bracket (26) in the outside mounting bracket (26) of cabinet (1)
Power device (21), breaker device (12) and thrust device (21) compression fit are in the outside of L-type sealing push plate (25)；
Breaker device (12) includes the fixed cylinder (31) of side opening, in the open-mouth mating connection end cap of fixed cylinder (31)
(36), in the interior mating connection slide plate (38) of fixed cylinder (31) and push rod (32), the upside of push rod (32) is stretched out across end cap (36)
Fixed cylinder (31) outside, is inlayed the first ball (37) in the end of push rod (32), and the first ball (37) contacts L-type and seals push plate
(25), baffle ring (33) are equipped on push rod (32), baffle ring (33) setting is equipped in fixed cylinder (31) in the upside of slide plate (38)
First spring (34) is equipped with second spring (39) in the downside of slide plate (38), is socketed on push rod (32) on the first spring (34),
Third switch (35) is also installed in the upside of slide plate (38), third switchs the bottom corresponding matching of (35) and push rod (32), third
Switch (35) is connected on the main road of the power supply circuit in explosion-proof tank；
Thrust device (21) includes fixes sleeve (40), and a slide cartridge (41) that can be slided is socketed in fixes sleeve (40),
Spring (42) and the second ball (43) are equipped in slide cartridge (41), spring (42) is in compressive state, and one end holds out against bracket
(26), the other end is held out against the second ball (43), and the second ball (43) contacts L-type sealing push plate (25)；
Fixture block (27) are equipped in L-type sealing push plate (25) end of door-plate (3) side, are equipped with card slot in the outside of door-plate (3)
(28), when door-plate (3) open the door, fixture block (27) and the corresponding clamping engagement of card slot (28), the 4th switch of installation in card slot (28)
(29) and electromagnet (30) the 5th switch (24), is also installed on door-plate (3), the 4th switch (29) and the 5th switch (24) connect
On electromagnet (30) power-on circuit；
It is respectively mounted a L-type snap-gauge (20) in the inner side and outer side of the door-plate (3), L-type snap-gauge (20) and door-plate (3) form U
The opening direction of type groove, U-type groove is arranged to the extension door-plate (7), is equipped with a card slot in each L-type snap-gauge (20)
(20.1), spring bearer plate (22) are clamped in card slot (20.1), spring bearer plate (22) and extension door-plate (7) corresponding matching are extending
The inner side and outer side of door-plate (7) is equipped with one group raised (23)；
The card slot (20.1) is opening slot structure, is equipped with a U-shaped card slot, spring bearer plate in the two sides of card slot (20.1)
It (22) is arc panel, the two sides correspondence of spring bearer plate (22) is connected in corresponding U-shaped card slot；
In the outside connection knob (45) for extending door-plate (7)；
It is fixedly connected backing plate (44) on the inside of the extension door-plate (7), the fixed fixed plate (13) of backing plate (44) support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020743.3A CN107910215B (en) | 2018-01-10 | 2018-01-10 | A kind of explosion-proof tank for capableing of door opening electrical outage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020743.3A CN107910215B (en) | 2018-01-10 | 2018-01-10 | A kind of explosion-proof tank for capableing of door opening electrical outage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107910215A CN107910215A (en) | 2018-04-13 |
| CN107910215B true CN107910215B (en) | 2019-03-15 |
Family
ID=61871042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810020743.3A Active CN107910215B (en) | 2018-01-10 | 2018-01-10 | A kind of explosion-proof tank for capableing of door opening electrical outage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107910215B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108848632B (en) * | 2018-07-01 | 2020-09-11 | 南施西 | Electric power cabinet with synchronous structure |
| CN111769463B (en) * | 2020-07-10 | 2021-11-30 | 江西明正变电设备有限公司 | Outdoor high-voltage metering box protection device and use method thereof |
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|---|---|---|---|---|
| US4031340A (en) * | 1975-11-07 | 1977-06-21 | Appleton Electric Company | Defeater for mechanical safety interlock for covers of explosion-proof electrical housing |
| CN2107054U (en) * | 1991-08-03 | 1992-06-10 | 苏州电气控制设备厂 | Door-opened breaking arrangement for electrical boxes |
| CN201853948U (en) * | 2010-11-11 | 2011-06-01 | 中国石油化工集团公司 | Operating mechanism of explosion-proof box |
| CN201946457U (en) * | 2011-02-01 | 2011-08-24 | 孟庆海 | Pre-cover-opening power-off device |
| CN202977198U (en) * | 2012-11-05 | 2013-06-05 | 青岛信澳利制冷设备有限公司 | Door opening power-off device |
| CN203746697U (en) * | 2014-03-21 | 2014-07-30 | 徐州工程学院 | Power-off device outside underground explosion-insulating power supply box |
| CN203746696U (en) * | 2013-12-20 | 2014-07-30 | 济南新云鹏电气设备有限公司 | Flame-proof casing uncovering power-off device |
| CN204332715U (en) * | 2014-12-24 | 2015-05-13 | 徐州博轩自动化科技有限公司 | Mine explosion-suppression power supply uncovering power-off device |
| CN207800413U (en) * | 2018-01-10 | 2018-08-31 | 二工防爆科技股份有限公司 | A kind of explosion-proof tank for capableing of door opening electrical outage |
-
2018
- 2018-01-10 CN CN201810020743.3A patent/CN107910215B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4031340A (en) * | 1975-11-07 | 1977-06-21 | Appleton Electric Company | Defeater for mechanical safety interlock for covers of explosion-proof electrical housing |
| CN2107054U (en) * | 1991-08-03 | 1992-06-10 | 苏州电气控制设备厂 | Door-opened breaking arrangement for electrical boxes |
| CN201853948U (en) * | 2010-11-11 | 2011-06-01 | 中国石油化工集团公司 | Operating mechanism of explosion-proof box |
| CN201946457U (en) * | 2011-02-01 | 2011-08-24 | 孟庆海 | Pre-cover-opening power-off device |
| CN202977198U (en) * | 2012-11-05 | 2013-06-05 | 青岛信澳利制冷设备有限公司 | Door opening power-off device |
| CN203746696U (en) * | 2013-12-20 | 2014-07-30 | 济南新云鹏电气设备有限公司 | Flame-proof casing uncovering power-off device |
| CN203746697U (en) * | 2014-03-21 | 2014-07-30 | 徐州工程学院 | Power-off device outside underground explosion-insulating power supply box |
| CN204332715U (en) * | 2014-12-24 | 2015-05-13 | 徐州博轩自动化科技有限公司 | Mine explosion-suppression power supply uncovering power-off device |
| CN207800413U (en) * | 2018-01-10 | 2018-08-31 | 二工防爆科技股份有限公司 | A kind of explosion-proof tank for capableing of door opening electrical outage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107910215A (en) | 2018-04-13 |
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