CN210608172U - Safe type explosion-proof block terminal - Google Patents
Safe type explosion-proof block terminal Download PDFInfo
- Publication number
- CN210608172U CN210608172U CN201922071255.8U CN201922071255U CN210608172U CN 210608172 U CN210608172 U CN 210608172U CN 201922071255 U CN201922071255 U CN 201922071255U CN 210608172 U CN210608172 U CN 210608172U
- Authority
- CN
- China
- Prior art keywords
- box
- fixedly connected
- plate
- box body
- fixed connection
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Casings For Electric Apparatus (AREA)
Abstract
The utility model discloses a safe explosion-proof distribution box, which comprises a box body, a gas protection unit and a locking unit, wherein the front end of the box body is fixedly connected with a flange plate, the front side surface of the flange plate is fixedly connected with a hinged support of a hinge, the other hinged support of the hinge is fixedly connected with a box door, the front side surface of the flange plate is fixedly connected with a sealing gasket, the front side surface of the sealing gasket is contacted with the outer edge of the rear side surface of the box door, the flange plate, the sealing gasket and the box door are fixedly connected through bolts, the gas protection unit is arranged at the right end of the box body, the locking unit is arranged at the front end of the right side plate of the box body, the safe explosion-proof distribution box also comprises a PLC controller, the PLC controller is fixedly connected with the inner side surface of the right side plate of the box body, the safe explosion-proof distribution box can effectively isolate external flammable gas, the safety factor is high.
Description
Technical Field
The utility model relates to a block terminal technical field specifically is an explosion-proof block terminal of safe type.
Background
The distribution box is used for reasonably distributing electric energy and facilitating the opening and closing operation of a circuit, and has higher safety protection level and can visually display the conduction state of the circuit, so that the distribution box is convenient to manage and is favorable for maintenance when a circuit fault occurs, therefore, the distribution box is commonly used in the field of electric power, switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or on a screen according to the electric wiring requirement to form a low-voltage distribution device, the circuit can be switched on or off by a manual or automatic switch in normal operation, the circuit is switched off by the protective electrical appliances in fault or abnormal operation, various parameters in operation can be displayed by the measuring instruments, certain electric parameters can be adjusted, a prompt or a signal can be sent for deviating from the normal working state, and special gas can be easily volatilized in areas such as chemical plants, oil fields and the like, these gases are liable to contact the distribution box, causing it to explode, causing unnecessary risks, for which we propose a safety explosion-proof distribution box solving the above mentioned drawbacks.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide an explosion-proof block terminal of safe type, can effectively keep apart outside combustible gas, eliminate the potential safety hazard that the explosion takes place, can prevent simultaneously that the operation personnel from opening the chamber door operation and causing danger under the higher condition of combustible gas content on every side, factor of safety is high, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a safety explosion-proof distribution box comprises a box body, a gas protection unit and a locking unit;
a box body: the front side of the box body is fixedly connected with a flange plate, the front side of the flange plate is fixedly connected with a hinged support of a hinge, the other hinged support of the hinge is fixedly connected with a box door, the front side of the flange plate is fixedly connected with a sealing gasket, the front side of the sealing gasket is contacted with the outer edge of the rear side of the box door, and the flange plate, the sealing gasket and the box door are fixedly connected through bolts;
a gas protection unit: the gas protection unit is arranged at the right end of the box body;
a locking unit: the locking unit is arranged at the front end of the right side plate of the box body;
wherein: the device also comprises a PLC (programmable logic controller), the PLC is fixedly connected to the inner side surface of the right side plate of the box body, the input end of the PLC is electrically connected with an external power supply, the flange plate, the sealing gasket and the box door are fixedly connected through bolts to keep the box body in a sealed state, the PLC starts the vacuum pump, the vacuum pump pumps out air in the box body through the exhaust pipe, the pressure sensor detects the air pressure in the box body and transmits signals to the PLC, when the box body is in a vacuum state, the PLC closes the vacuum pump and controls the control solenoid valve to be opened, nitrogen is filled into the box body from the air inlet pipe through external equipment, the pressure in the box body is slightly higher than the external atmospheric pressure, external air is prevented from permeating into the box body, electrical elements in the box body are isolated from combustible gas, potential safety hazards are eliminated, the combustible gas detector detects the content of the, when the combustible gas content is higher than the safety standard, the PLC controller controls the electromagnet to be powered off, the electromagnet loses magnetism after being powered off and does not adsorb a metal plate, the elastic force of the spring pushes the connecting plate to move downwards, the connecting plate drives the bolt to move downwards to be inserted into the round holes in the middle parts of the inserting plate and the fixing plate, the box door is locked, the danger caused by the fact that an operator opens and maintains the box door under the condition that the combustible gas content is higher is prevented, the observation window is convenient for observing the running condition of an internal electrical element, the frequency of opening the box door by the operator is reduced, the display screen is convenient to observe the gas pressure inside the box body and the content of external combustible gas, and the on.
Further, the gas protection unit includes vacuum pump, blast pipe, intake pipe and solenoid valve, vacuum pump fixed connection is in the right flank lower extreme of box, blast pipe fixed connection is in the gas outlet department of box right side board lower extreme, the vacuum pump is established ties in the middle part of blast pipe, intake pipe fixed connection is in the gas inlet department of box right side board upper end, the solenoid valve is established ties in the middle part of intake pipe, the output of PLC controller is connected to the equal electricity of input of vacuum pump and solenoid valve, fills nitrogen gas to the box inside, avoids inside electrical component and outside combustible gas contact.
Furthermore, the locking unit comprises an electromagnet, a metal plate, a limiting ring, a spring, a bolt, a connecting plate, an inserting plate and a fixing plate, wherein the electromagnet, the limiting ring and the fixing plate are fixedly connected to the front end of the inner right side surface of the box body, the limiting ring is positioned below the electromagnet, two fixing plates are arranged below the limiting ring in an up-down symmetrical mode, the inserting plate is fixedly connected to the right end of the rear side surface of the box door, the inserting plate is positioned between the two fixing plates, the bolt is respectively in sliding connection with the inner surfaces of through holes formed in the middle parts of the limiting ring, the inserting plate and the fixing plate, the connecting plate is fixedly connected to the outer arc surface of the bolt, the connecting plate is in contact with the upper surface of the upper fixing plate, the upper end of the spring is fixedly connected with the lower surface of the limiting ring, the lower end of the spring is fixedly connected with, the metal plate is located above the limiting ring and corresponds to the electromagnet, the input end of the electromagnet is electrically connected with the output end of the PLC, the box door is automatically locked when the content of the external combustible gas is high, the situation that the external gas enters the box body due to the fact that an operator opens the box door is prevented, and potential safety hazards are eliminated.
Further, still include observation window, explosion-proof glass and handle, the observation window sets up in the middle part of chamber door, explosion-proof glass fixed connection is in the inside front end of observation window, handle fixed connection is in the lateral surface right-hand member of chamber door, and the observation window is convenient for observe the electric elements operational aspect of inside, reduces the number of times that the chamber door was opened to the operation personnel.
Further, still include display screen, combustible gas detector and pressure sensor, display screen fixed connection is in the inside rear end of observation window, combustible gas detector fixed connection is in the upper surface of box, pressure sensor fixed connection is in the inside right flank of box, the output of PLC controller is connected to the input electricity of display screen, PLC controller 14's input is connected to the equal electricity of output of combustible gas detector and pressure sensor, and the display screen is convenient observes the inside gas pressure of box and outside combustible gas content, does benefit to in time to know the site conditions.
Compared with the prior art, the beneficial effects of the utility model are that: this explosion-proof block terminal of safe type has following benefit:
1. the flange board, sealed pad and chamber door pass through bolt fixed connection and make the box keep encapsulated situation, the PLC controller starts the vacuum pump, the vacuum pump is taken out the inside air of box through the blast pipe, pressure sensor detects the inside atmospheric pressure of box and gives the PLC controller with the signal transmission, when the box is inside for vacuum state, the PLC controller closes the vacuum pump and controls the control solenoid valve and open, fill nitrogen gas to the box is inside from the intake pipe through external equipment, make the inside pressure of box be a little higher than outside atmospheric pressure, prevent inside outside air infiltration box, make the isolated combustible gas of the electrical components of box inside, eliminate the potential safety hazard.
2. The combustible gas detector detects the outside combustible gas content of box in real time and gives the PLC controller with signal transmission, when the combustible gas content is higher than the safety standard, the PLC controller control electro-magnet outage, lose magnetism behind the electro-magnet outage and be not adsorbing the metal sheet, the elasticity of spring promotes the connecting plate and moves down, the connecting plate drives the bolt and moves down and pegs graft in the round hole at plugboard and fixed plate middle part, lock the chamber door, prevent that the operation personnel from opening the chamber door under the higher condition of combustible gas content and maintaining and cause danger.
3. The observation window is convenient for observe the electric elements operational aspect of inside, reduces the number of times that the operation personnel opened the chamber door, and the display screen is convenient observes the gas pressure and the outside combustible gas content of box inside, does benefit to in time to know the site conditions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic left-side sectional view of the present invention;
fig. 3 is an enlarged schematic view of the a position of the present invention.
In the figure: the device comprises a box body 1, a box door 2, a hinge 3, a display screen 4, an observation window 5, explosion-proof glass 6, a handle 7, a gas protection unit 8, a vacuum pump 81, an exhaust pipe 82, an air inlet pipe 83, an electromagnetic valve 84, a locking unit 9, an electromagnet 91, a metal plate 92, a spacing ring 93, a spring 94, a bolt 95, a connecting plate 96, a plug-in board 97, a fixing plate 98, a combustible gas detector 10, a pressure sensor 11, a sealing gasket 12, a flange plate 13 and a PLC (programmable logic controller) 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a safety explosion-proof distribution box comprises a box body 1, a gas protection unit 8 and a locking unit 9;
a box body 1: the front end of the box body 1 is fixedly connected with a flange plate 13, the front side surface of the flange plate 13 is fixedly connected with a hinged support of the hinge 3, the other hinged support of the hinge 3 is fixedly connected with the box door 2, the front side surface of the flange plate 13 is fixedly connected with a sealing gasket 12, the front side surface of the sealing gasket 12 is contacted with the outer edge of the rear side surface of the box door 2, and the flange plate 13, the sealing gasket 12 and the box door 2 are fixedly connected through bolts to keep the sealing property of the interior of the box body 1;
gas protection unit 8: the gas protection unit 8 comprises a vacuum pump 81, an exhaust pipe 82, an air inlet pipe 83 and an electromagnetic valve 84, the vacuum pump 81 is fixedly connected to the lower end of the right side surface of the box body 1, the exhaust pipe 82 is fixedly connected to an air outlet at the lower end of the right side plate of the box body 1, the vacuum pump 81 is connected in series to the middle of the exhaust pipe 82, the air inlet pipe 83 is fixedly connected to an air inlet at the upper end of the right side plate of the box body 1, the electromagnetic valve 84 is connected in series to the middle of the air inlet pipe 83, input ends of the vacuum pump 81 and the electromagnetic valve 84 are electrically connected with an output end of the PLC 14, the PLC 14 starts the vacuum pump 81, the vacuum pump 81 pumps out air in the box body 1 through the exhaust pipe 82, the pressure sensor 11 detects air pressure in the box body 1 and transmits a signal to the PLC 14, when the interior of the box, the pressure in the box body 1 is slightly higher than the external atmospheric pressure, so that external air is prevented from permeating into the box body 1, electrical components in the box body 1 are isolated from combustible gas, and potential safety hazards are eliminated;
the locking unit 9: the locking unit 9 comprises an electromagnet 91, a metal plate 92, a limiting ring 93, a spring 94, a bolt 95, a connecting plate 96, an inserting plate 97 and a fixing plate 98, wherein the electromagnet 91, the limiting ring 93 and the fixing plate 98 are fixedly connected to the front end of the right side surface in the box body 1, the limiting ring 93 is positioned below the electromagnet 91, the fixing plates 98 are provided with two fixing plates which are vertically symmetrically arranged below the limiting ring 93, the inserting plate 97 is fixedly connected to the right end of the rear side surface of the box door 2, the inserting plate 97 is positioned between the two fixing plates 98, the bolt 95 is respectively in sliding connection with the limiting ring 93, the inserting plate 97 and the inner surfaces of through holes arranged in the middle of the fixing plates 98, the connecting plate 96 is fixedly connected to the outer arc surface of the bolt 95, the connecting plate 96 is in contact with the upper surface of the fixing plate 98 above, the upper end of the spring 94 is fixedly, the metal plate 92 is fixedly connected to the upper surface of the bolt 95, the metal plate 92 is located above the limiting ring 93, the metal plate 92 and the electromagnet 91 are correspondingly arranged, the input end of the electromagnet 91 is electrically connected with the output end of the PLC 14, the combustible gas detector 10 detects the combustible gas content outside the box body 1 in real time and transmits a signal to the PLC 14, when the combustible gas content is higher than the safety standard, the PLC 14 controls the electromagnet 91 to be powered off, the electromagnet 91 loses magnetism and does not adsorb the metal plate 92 after being powered off, the elastic force of the spring 94 pushes the connecting plate 96 to move downwards, the connecting plate 96 drives the bolt 95 to move downwards to be inserted into circular holes in the middle parts of the inserting plate 97 and the fixing plate 98, the box door 2 is locked, and the danger caused by the fact that an operator opens and maintains the box door 2 under;
wherein: the box door is characterized by further comprising an observation window 5, explosion-proof glass 6, a handle 7, a display screen 4, a combustible gas detector 10 and a pressure sensor 11, wherein the observation window 5 is arranged in the middle of the box door 2, the explosion-proof glass 6 is fixedly connected to the front end inside the observation window 5, the handle 7 is fixedly connected to the right end of the outer side face of the box door 2, the display screen 4 is fixedly connected to the rear end inside the observation window 5, the combustible gas detector 10 is fixedly connected to the upper surface of the box body 1, the pressure sensor 11 is fixedly connected to the right side face inside the box body 1, the input end of the display screen 4 is electrically connected with the output end of the PLC 14, the output ends of the combustible gas detector 10 and the pressure sensor 11 are electrically connected with the input end of the PLC 14, the observation window 5 is convenient for observing the running condition of internal electrical elements, the times of opening the box door 2 by operators are reduced, and, is beneficial to knowing the field situation in time.
Wherein: still include PLC controller 14, PLC controller 14 fixed connection is in the right side inboard face of box 1, and external power source is connected to PLC controller 14's input electricity.
When in use: the flange plate 13, the sealing gasket 12 and the box door 2 are fixedly connected through bolts to keep the box body 1 in a sealed state, the PLC controller 14 starts the vacuum pump 81, the vacuum pump 81 pumps air inside the box body 1 through the exhaust pipe 82, the pressure sensor 11 detects the air pressure inside the box body 1 and transmits a signal to the PLC controller 14, when the inside of the box body 1 is in a vacuum state, the PLC controller 14 closes the vacuum pump 81 and controls the control solenoid valve 84 to be opened, nitrogen is filled into the box body 1 from the air inlet pipe 83 through external equipment, the pressure inside the box body 1 is slightly higher than the external atmospheric pressure, external air is prevented from permeating into the box body 1, electrical components inside the box body 1 are isolated from combustible gas, the combustible gas detector 10 detects the combustible gas content outside the box body 1 in real time and transmits the signal to the PLC controller 14, when the combustible gas content is higher than the safety standard, the PLC controller, lose magnetism after the electro-magnet 91 outage and be not adsorbing metal sheet 92, spring 94's elasticity promotes connecting plate 96 downstream, connecting plate 96 drives bolt 95 downstream and pegs graft in the round hole at plugboard 97 and fixed plate 98 middle part, carry out the locking to chamber door 2, prevent that the operation personnel from opening to maintain chamber door 2 under the higher condition of combustible gas content and causing danger, observation window 5 is convenient for observe the electric elements operational aspect of inside, reduce the number of times that the operation personnel opened chamber door 2, display screen 4 conveniently observes 1 inside gas pressure of box and outside combustible gas content, do benefit to in time to know the site conditions.
It is to be noted that the specific type of the output end of the PLC controller 14 disclosed in this embodiment is siemens S7-200, the display screen 4, the vacuum pump 81, the electromagnetic valve 84, the electromagnet 91, the combustible gas detector 10, and the pressure sensor 11 may be freely configured according to an actual application scenario, the vacuum pump 81 may be an HP-0200V oil-free silent vacuum pump available from leno electromechanical technologies ltd, of eastern guan, the combustible gas detector 10 may be a GC510 detection robbery type combustible gas detector available from henan galloping electric utilities ltd, and the PLC controller 14 controls the display screen 4, the vacuum pump 81, the electromagnetic valve 84, the electromagnet 91, the combustible gas detector 10, and the pressure sensor 11 to operate by a method commonly used in the prior art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an explosion-proof block terminal of safe type which characterized in that: comprises a box body (1), a gas protection unit (8) and a locking unit (9);
case (1): the front end of the box body (1) is fixedly connected with a flange plate (13), the front side face of the flange plate (13) is fixedly connected with a hinged support of the hinge (3), the other hinged support of the hinge (3) is fixedly connected with the box door (2), the front side face of the flange plate (13) is fixedly connected with a sealing gasket (12), the front side face of the sealing gasket (12) is in contact with the outer edge of the rear side face of the box door (2), and the flange plate (13), the sealing gasket (12) and the box door (2) are fixedly connected through bolts;
gas protection unit (8): the gas protection unit (8) is arranged at the right end of the box body (1);
locking unit (9): the locking unit (9) is arranged at the front end of the right side plate of the box body (1);
wherein: still include PLC controller (14), PLC controller (14) fixed connection is in the right side inboard face of box (1), external power source is connected to the input electricity of PLC controller (14).
2. A safety explosion-proof electrical box according to claim 1, wherein: gas protection unit (8) include vacuum pump (81), blast pipe (82), intake pipe (83) and solenoid valve (84), vacuum pump (81) fixed connection is in the right flank lower extreme of box (1), blast pipe (82) fixed connection is in the gas outlet department of box (1) right side board lower extreme, vacuum pump (81) are established ties in the middle part of blast pipe (82), intake pipe (83) fixed connection is in the gas inlet department of box (1) right side board upper end, solenoid valve (84) are established ties in the middle part of intake pipe (83), the output of PLC controller (14) is connected to the equal electricity of input of vacuum pump (81) and solenoid valve (84).
3. A safety explosion-proof electrical box according to claim 1, wherein: the locking unit (9) comprises an electromagnet (91), a metal plate (92), a limiting ring (93), a spring (94), a bolt (95), a connecting plate (96), an inserting plate (97) and a fixing plate (98), wherein the electromagnet (91), the limiting ring (93) and the fixing plate (98) are fixedly connected to the front end of the right side face in the box body (1), the limiting ring (93) is positioned below the electromagnet (91), the two fixing plates (98) are vertically and symmetrically arranged below the limiting ring (93), the inserting plate (97) is fixedly connected to the right end of the rear side face of the box door (2), the inserting plate (97) is positioned between the two fixing plates (98), the bolt (95) is respectively in sliding connection with the inner surfaces of through holes formed in the middles of the limiting ring (93), the inserting plate (97) and the fixing plate (98), and the connecting plate (96) is fixedly connected to the outer arc face of the bolt (95), fixed plate (98) upper surface contact of connecting plate (96) and top, the upper end of spring (94) and the lower fixed surface of spacing ring (93) are connected, the lower extreme of spring (94) and the upper fixed surface of connecting plate (96) are connected, metal sheet (92) fixed connection is in the upper surface of bolt (95), metal sheet (92) are located the top of spacing ring (93), metal sheet (92) correspond the setting with electro-magnet (91), the output of PLC controller (14) is connected to the input electricity of electro-magnet (91).
4. A safety explosion-proof electrical box according to claim 1, wherein: still include observation window (5), explosion-proof glass (6) and handle (7), observation window (5) set up in the middle part of chamber door (2), explosion-proof glass (6) fixed connection is in the inside front end of observation window (5), handle (7) fixed connection is in the lateral surface right-hand member of chamber door (2).
5. A safety explosion-proof distribution box according to claim 4, characterized in that: still include display screen (4), combustible gas detector (10) and pressure sensor (11), display screen (4) fixed connection is in the inside rear end of observation window (5), combustible gas detector (10) fixed connection is in the upper surface of box (1), pressure sensor (11) fixed connection is in the inside right flank of box (1), the output of PLC controller (14) is connected to the input electricity of display screen (4), the input of PLC controller (14) is connected to the equal electricity of output of combustible gas detector (10) and pressure sensor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922071255.8U CN210608172U (en) | 2019-11-27 | 2019-11-27 | Safe type explosion-proof block terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922071255.8U CN210608172U (en) | 2019-11-27 | 2019-11-27 | Safe type explosion-proof block terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210608172U true CN210608172U (en) | 2020-05-22 |
Family
ID=70695880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922071255.8U Active CN210608172U (en) | 2019-11-27 | 2019-11-27 | Safe type explosion-proof block terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210608172U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555159A (en) * | 2020-05-25 | 2020-08-18 | 河南豫丰电力工程有限公司 | Electric power control device |
| CN111712091A (en) * | 2020-05-26 | 2020-09-25 | 常州市盛和电子有限公司 | Positive pressure explosion-proof box |
| CN112247098A (en) * | 2020-09-21 | 2021-01-22 | 蚌埠隆华压铸机有限公司 | Explosion-proof anti-pinch device of die casting machine |
| CN113314994A (en) * | 2021-06-02 | 2021-08-27 | 徐州三创电子科技有限公司 | Power-off compensation type controller for electrical equipment |
-
2019
- 2019-11-27 CN CN201922071255.8U patent/CN210608172U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555159A (en) * | 2020-05-25 | 2020-08-18 | 河南豫丰电力工程有限公司 | Electric power control device |
| CN111712091A (en) * | 2020-05-26 | 2020-09-25 | 常州市盛和电子有限公司 | Positive pressure explosion-proof box |
| CN111712091B (en) * | 2020-05-26 | 2023-12-29 | 常州市盛和电子有限公司 | Positive pressure explosion-proof box |
| CN112247098A (en) * | 2020-09-21 | 2021-01-22 | 蚌埠隆华压铸机有限公司 | Explosion-proof anti-pinch device of die casting machine |
| CN113314994A (en) * | 2021-06-02 | 2021-08-27 | 徐州三创电子科技有限公司 | Power-off compensation type controller for electrical equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210608172U (en) | Safe type explosion-proof block terminal | |
| CN210723891U (en) | 10KV intelligence fixed cabinet with explosion-proof function | |
| CN205335738U (en) | Totally enclosed miniaturized cubical switchboard of gaseous all insulation of environmental protection | |
| CN209298595U (en) | A kind of combined type solid-state insulated switchgear tank bracket | |
| CN209133924U (en) | A kind of explosion-proof flame-retardant distribution box | |
| CN208284397U (en) | A kind of ring network cabinet anti-misoperation sign device | |
| CN103763876B (en) | Multifunctional positive pressure explosion prevention controls splicing cabinet | |
| CN214379325U (en) | High stable fire prevention type safety switch cabinet | |
| CN214044373U (en) | Explosion-proof distribution box | |
| CN107895664A (en) | A kind of door opening electrical outage explosion-proof tank | |
| CN211320753U (en) | Aerify cabinet and keep apart grounding box and control circuit thereof | |
| CN203193175U (en) | Lightning-protection double-case environmentally friendly gas-insulated metal-enclosed switchgear | |
| CN207664512U (en) | A kind of environmental protection gas insulation switch cabinet | |
| CN212259514U (en) | Explosion-proof electronic and electrical appliance control box for chemical industry | |
| CN218124044U (en) | Improved switch cabinet | |
| CN212676755U (en) | GCK low pressure pull-out type cubical switchboard with fire prevention explosion-proof function | |
| CN215870353U (en) | Anti-misoperation explosion-proof distribution box | |
| CN109888623B (en) | Safe and reliable's measurement cabinet | |
| CN109768491A (en) | A kind of 10kV metering cabinet of hermetically sealed all insulation | |
| CN217956383U (en) | Switch cabinet overhauling structure | |
| CN221041965U (en) | Sealing sliding door of high-low voltage power distribution cabinet | |
| CN210183707U (en) | Sewage treatment electrical apparatus switch board convenient to equipment | |
| CN216121273U (en) | Outdoor fire prevention switch board | |
| CN221102742U (en) | Fireproof isolation type high-low voltage switch cabinet | |
| CN211455610U (en) | High-voltage vacuum switch fastened and connected by bolts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |