CN115441347A - Explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard - Google Patents
Explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard Download PDFInfo
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- CN115441347A CN115441347A CN202211173963.2A CN202211173963A CN115441347A CN 115441347 A CN115441347 A CN 115441347A CN 202211173963 A CN202211173963 A CN 202211173963A CN 115441347 A CN115441347 A CN 115441347A
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- pressure relief
- electromagnet
- push rod
- controller
- plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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Abstract
The application discloses explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard includes: the door panel, the controller and the pressure relief assembly; the pressure relief assembly includes: the outer plate, the inner plate, the push rod, the electromagnet and the spring; the door plate is vertically arranged, and a pressure relief hole penetrating along the horizontal direction is formed in the door plate; the outer plate is matched with the pressure relief hole in shape and is sleeved in the pressure relief hole in a sliding manner along the horizontal direction; the inner plate is fixed on the inner side of the door panel; the two ends of the push rod are respectively connected with the outer plate and the inner plate; the electromagnet is sleeved on the push rod and used for driving the push rod to stretch; the spring is sleeved on the push rod, one end of the spring is connected with the electromagnet, and the other end of the spring is connected with the inner plate; the controller is electrically connected with the electromagnet and is used for controlling the electromagnet to be switched on or off. When door plant internal pressure was too big, can drive the push rod through the electro-magnet and stretch and make pressure release hole and outside intercommunication carry out the pressure release to can realize through the spring that the planking resets to the state with pressure release hole sealing connection after the pressure release at every turn.
Description
Technical Field
The application relates to the technical field of pressure relief devices, in particular to an explosion-proof pressure relief device of a prefabricated cabin type switch cabinet.
Background
At present, when most 10kV equipment switch cabinets of a transformer substation have short-circuit faults, overhigh temperature, overlarge current or reduced insulation degree of components, air can be heated to expand air due to larger heat released by electric arc instantly; the expanded gas cannot be discharged in time, which can cause the deformation, displacement and even breakage of the high-voltage equipment. If the ventilation effect in the switch cabinet is poor, the switch cabinet can be damaged by heating air through electric arc, and the serious consequences of equipment tripping and bus power failure are caused by protection actions. For this reason, a pressure relief device is generally provided on the switchgear.
The existing switch cabinet pressure relief device is opened to relieve pressure when internal overpressure generally through an openable sealing cover. However, the seal cover cannot be automatically restored after the seal cover is closed, and the seal cover can be used again only by being replaced and fixed again, so that the use process is inconvenient.
Disclosure of Invention
In view of this, the purpose of this application is to provide an explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard for solve the problem that current cubical switchboard pressure relief device is not convenient for used repeatedly.
In order to reach above-mentioned technical purpose, this application provides an explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard, includes: the device comprises a device main body, a door plate, a controller and a pressure relief assembly;
the door plate is vertically arranged on the device main body, and a pressure relief hole penetrating along the horizontal direction is formed in the door plate;
the pressure relief assembly comprises: the device comprises an outer plate, an inner plate, a push rod, an electromagnet and a spring;
the outer plate is arranged in the pressure relief hole in a sliding manner along the horizontal direction;
the inner plate is located inside the device body;
the electromagnet is fixedly connected with the device main body,
the push rod can be sleeved on the electromagnet in a sliding mode, the front end of the push rod is connected with the outer plate, and the rear end of the push rod is connected with the inner plate;
the front end of the push rod is provided with a magnetic pole;
one end of the spring is connected with the electromagnet, and the other end of the spring is connected with the inner plate;
the controller is electrically connected with the electromagnet and used for controlling the electromagnet to be switched on and off;
the electromagnet is used for driving the push rod to move forwards when being electrified, so that the outer plate slides outwards to the pressure relief Kong Kaiqi;
the spring is used for driving the push rod to move backwards when the electromagnet is powered off, so that the outer plate slides inwards to the pressure relief hole to be sealed.
Further, an electric fan is arranged on the inner plate;
the electric fan is electrically connected with the controller.
Further, the device also comprises a pressure sensor;
the pressure sensor is electrically connected with the controller and used for sensing a real-time pressure value in the device main body and then sending the real-time pressure value to the controller;
the controller is used for controlling the electromagnet to be electrified when the real-time pressure value is larger than a preset pressure value, judging whether the real-time pressure value is larger than the preset pressure value or not after the electromagnet is electrified for a preset time, and starting the electric fan if the real-time pressure value is larger than the preset pressure value.
Further, the device also comprises a connecting cylinder;
the connecting cylinder is arranged on the device main body, and a through cavity communicated with the interior of the device main body is arranged in the middle of the connecting cylinder;
the door plate is arranged at the outer end part of the through cavity;
the pressure relief assembly is located in the through cavity.
Further, the door plate is arranged at the outer end part of the through cavity in a sliding mode along the vertical direction.
Furthermore, a magnetic block is arranged on the door plate;
a coil magnet is arranged in the through cavity;
the controller is electrically connected with the coil magnet;
the controller is used for controlling the current direction of the coil magnet to enable the coil magnet to generate attraction force and repulsion force on the magnetic blocks.
Further, the magnetic blocks comprise an upper magnetic block and a lower magnetic block;
the upper magnetic block and the lower magnetic block are respectively arranged at the top and the bottom of the door panel;
the coil magnet comprises an upper coil magnet and a lower coil magnet;
the upper coil magnet and the lower coil magnet are respectively arranged at the top and the bottom of the through cavity.
Further, a toxic gas detector electrically connected with the controller is arranged in the through cavity.
Further, sealing strips are arranged at the top and the bottom of the door panel.
Furthermore, sliding strips are arranged on two sides of the door panel;
a slide rail for the slide bar to slide along the vertical direction is arranged in the through cavity;
the door plate is connected with the sliding strip through a pressure release screw;
and a chain is connected between the door panel and the connecting cylinder.
According to the technical scheme, the application provides an explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard includes: the door panel, the controller and the pressure relief assembly; the pressure relief assembly includes: the outer plate, the inner plate, the push rod, the electromagnet and the spring; the door plate is vertically arranged, and a pressure relief hole penetrating along the horizontal direction is formed in the door plate; the outer plate is matched with the pressure relief hole in shape and is sleeved in the pressure relief hole in a sliding manner along the horizontal direction; the inner plate is fixed on the inner side of the door panel; the two ends of the push rod are respectively connected with the outer plate and the inner plate; the electromagnet is sleeved on the push rod and used for driving the push rod to stretch; the spring is sleeved on the push rod, one end of the spring is connected with the electromagnet, and the other end of the spring is connected with the inner plate; the controller is electrically connected with the electromagnet and used for controlling the electromagnet to be powered on or powered off; the electromagnet is used for driving the push rod to extend when being electrified, so that the outer plate slides to be separated from the pressure relief hole; the spring is used for pulling the push rod to contract when the electromagnet is powered off, so that the outer plate is in sealing connection with the pressure relief hole. When door plant internal pressure was too big, can drive the push rod through the electro-magnet and stretch and make pressure release hole and outside intercommunication carry out the pressure release to can realize through the spring that the planking resets to the state with pressure release hole sealing connection after the pressure release at every turn, solve the problem of current cubical switchboard pressure relief device used repeatedly not convenient for.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic view of a door panel and a pressure relief assembly of an explosion-proof pressure relief device of a prefabricated cabin type switch cabinet according to an embodiment of the present application;
fig. 2 is a schematic diagram of a push rod and an electromagnet of an explosion-proof pressure relief device of a prefabricated cabin type switch cabinet according to an embodiment of the present application;
fig. 3 is a schematic view of a door plate and a connecting cylinder of an explosion-proof pressure relief device of a prefabricated cabin type switch cabinet according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 and fig. 2, an explosion-proof pressure relief device for a prefabricated cabin type switch cabinet provided in an embodiment of the present application includes: a device body (not shown), a door plate 10, a controller and a pressure relief assembly 20.
The door plate 10 is vertically arranged on the device main body and is connected with the device main body in a sealing mode, and a pressure relief hole 11 penetrating through the door plate 10 in the horizontal direction is formed in the door plate. The device main body can be used on equipment such as a switch cabinet. The pressure relief hole 11 communicates with the inside of the apparatus main body.
The pressure relief assembly 20 includes: an outer plate 21, an inner plate 22, a push rod 23, an electromagnet 24 and a spring 25. The outer plate 21 is matched with the pressure relief hole 11 in shape and is arranged in the pressure relief hole 11 in a sliding manner along the horizontal direction; so that when the outer plate 21 is positioned in the pressure relief hole 11, the two are connected in a sealing way; when the outer plate 21 slides out of the pressure relief hole 11, the inside and outside of the pressure relief hole 11 are conducted. The inner panel 22 is located inside the apparatus main body, that is, inside the door panel 10. The front end and the rear end of the push rod 23 are respectively connected with the outer plate 21 and the inner plate 22, and the front end of the push rod 23 is provided with a magnetic pole opposite to the electromagnet 24 after being electrified. The electromagnet 24 is fixedly connected with the device main body, sleeved on the push rod 23, and connected with the push rod 23 in a relatively sliding manner, and is used for driving the push rod 23 to move back and forth. The front end of the push rod 23 may be provided with a magnetic pole opposite to the electromagnet 24 after being electrified, so that the push rod moves forward by magnetic force after the electromagnet 24 is electrified. The spring 25 is sleeved on the push rod 23, and one end of the spring is connected with the electromagnet 24 and the other end is connected with the inner plate 22.
In this embodiment, the controller may be disposed inside the switch cabinet or disposed on the pressure relief assembly 20. The controller is electrically connected with the electromagnet 24 and used for controlling the electromagnet 24 to be powered on or powered off. Specifically, the electromagnet 24 is electrically connected to a power supply, and the controller controls the electromagnet to be turned on or off by controlling the power supply to be turned on or off. Similarly, the power source may be disposed inside the switch cabinet or on the pressure relief assembly 20.
When cubical switchboard internal pressure is too big when needing the pressure release, the controller starts the power and makes electro-magnet 24 circular telegram, and then makes electro-magnet 24 drive the front end of push rod 23 and remove for planking 21 is outwards slided and is switched on to pressure release hole 11 and outside, also promptly pressure release hole 11 opens, conducts the outside through pressure release hole 11 with the inside pressure of cubical switchboard this moment. When the pressure in the device main body is too high, the inner plate can be pushed by pressure to move forwards to open the outer plate 21, and the automatic pressure relief effect is achieved. .
The spring 25 is used for driving the push rod 23 to move backwards when the electromagnet 24 is powered off, so that the outer plate 21 slides backwards to be sealed with the pressure relief hole 11, and the integral automatic resetting of the pressure relief device is realized. When pressure relief is needed next time, the pressure relief valve can be directly used and needs to be reinstalled by a worker.
As a further improvement, an electric fan 30 may also be provided on the inner plate 22; the electric fan 30 is electrically connected to the controller. When the pressure relief hole 11 is opened, the controller can synchronously control the electric fan 30 to start, so that the switch cabinet can be quickly relieved.
In this embodiment, the controller may determine whether to energize the electromagnet 24 and determine whether to activate the electric fan 30 by means of pressure sensors. The pressure sensor can be arranged in the device main body, is electrically connected with the controller and is used for sensing the inner side of the door plate, namely sending a real-time pressure value inside the device main body to the controller. Wherein, the real-time pressure value can be automatically updated in real time along with the time.
The controller is used for controlling the electromagnet 24 to be electrified when the real-time pressure value is larger than the preset pressure value, so that the pressure relief hole 11 is opened, judging whether the real-time pressure value at the moment is larger than the preset pressure value or not after the electromagnet 24 is electrified for a preset time, and starting the electric fan 30 if the real-time pressure value is larger than the preset pressure value.
That is to say, after pressure release hole 11 is opened for a preset time, the controller senses that the pressure inside the device main body is still greater than a preset pressure value through the pressure sensor, then the electric fan is started, and the air draft through electric fan 30 accelerates the pressure release to enable the temperature and humidity in the device main body to return to normal as soon as possible. Among them, the electric fan 30 may be disposed at a central position of the inner plate 22.
In other embodiments, a connector barrel 40; the connecting cylinder 40 is arranged on the device main body, and the middle part of the connecting cylinder 40 is provided with a through cavity 41 communicated with the inside of the device main body; the door plate 10 is arranged at the outer end part of the through cavity 41; the pressure relief assembly 20 is located within the through cavity 41.
The connecting cylinder 40 is a strip, and the internal through cavity 41 can be used as a through channel for the gas inside the device body.
As a further improvement, the door panel 10 may be provided to be slidable in the vertical direction on the through cavity 41. Specifically, the door panel 10, the controller, the fan 30 and the pressure relief assembly 20 constitute a primary pressure relief assembly. In this embodiment, the slidable arrangement of the door panel 10 may be such that the door panel 10 constitutes a secondary pressure relief assembly. When the pressure relief is not needed, the door panel 10 is hermetically connected with the through cavity 41. When the pressure in the device main body is too high, the pressure is firstly released through the pressure releasing component 20 and the fan 30. After when the second is predetermine for a long time, the controller still is greater than predetermineeing the pressure value through the real-time pressure value that pressure sensor sensed in the device main part, then can slide and make logical chamber 41 direct and outside intercommunication through control door plant 10, realizes more quick pressure release. The sliding opening of the door panel 10 may be controlled by connecting the door panel 10 to a linear motor or by pushing a cylinder. The top and bottom of the door panel 10 are provided with sealing strips 13 for sealing connection with the through cavity 41 when pressure relief is not required.
In the present embodiment, referring to fig. 1 and fig. 3, a magnetic block 12 is disposed on a door panel 10; a coil magnet 42 is arranged in the through cavity 41; the controller is electrically connected to the coil magnet 42; the controller is used for controlling the current direction of coil magnet 42 so that coil magnet 42 generates attraction force and repulsion force to magnetic blocks 12.
Specifically, the different current directions on the coil magnet 42 can make the magnetic poles of the coil magnet 42 different, so that attraction force and repulsion force can be respectively generated on the magnetic blocks 12 according to the different current directions, and the sliding control of the door panel 10 is realized through the cooperation of the attraction force and the repulsion force.
Further, the magnetic block 12 may include an upper magnetic block and a lower magnetic block, which are respectively disposed at the top and the bottom of the door panel 10. Accordingly, the coil magnets 42 include an upper coil magnet and a lower coil magnet, which are respectively disposed at the top and the bottom of the through cavity 41.
In application, the upper coil magnet may be located above the upper magnetic block; the lower coil magnet can be arranged below the lower magnetic block. When the door plate 10 needs to slide upwards, the upper coil magnet is controlled to generate attraction force on the upper magnetic block, and the lower coil magnet generates repulsion force on the lower magnetic block, so that the door plate 10 can be driven to slide upwards. When the door plate 10 needs to slide downwards, the current directions of the upper coil magnet and the lower coil magnet can be adjusted correspondingly. When the pressure release is not needed, after the door panel 10 is controlled to slide to a proper position, the current of the upper coil magnet and the lower coil magnet is disconnected or the upper coil magnet and the lower coil magnet respectively provide attraction force for the upper magnetic block and the lower magnetic block. The magnetic force generated by the upper coil magnet and the lower coil magnet can be regulated and controlled according to the current. The influence of gravity can be offset by the cooperation of the upper coil magnet and the lower coil magnet, and the sliding control of the door plate 10 is realized.
In other embodiments, lead to can be provided with the toxic gas detector of being connected with the controller electricity in the chamber 41, can detect and lead to whether there is toxic gas in the chamber 41 to with the data feedback backstage that detects, before the maintenance to pressure relief device, thereby the backstage shows that the inboard gas of pressure release channel whether contains poisonous other suggestion staff whether be fit for the maintenance, prevents that the poisonous and harmful gas that the high pressure produced from causing the injury to maintenance personal.
In other embodiments, a battery and a solar panel may also be included. The battery is used to supply power to various power supply components such as the controller, the electromagnet 24, and the like. The solar cell panel is disposed outside the door panel 10, electrically connected to the battery, and configured to charge the battery through solar energy.
Further, referring to fig. 1, the door panel 10 is provided with sliding strips 14 at two sides; a slide rail (not shown) for the slide bar 41 to slide along the vertical direction is arranged in the through cavity 41; the door plate 10 is connected with the slide bar 14 through a pressure release screw; a chain (not shown) is connected between the door panel 10 and the connecting cylinder 40.
Specifically, the door plate 10, the slide bar 14 and the slide rail may form a three-level pressure relief mechanism. When the internal pressure of the device main body is too high and the pressure cannot be released in time through the primary pressure release mechanism and the secondary pressure release mechanism, the pressure inside the device main body may impact the door panel 10. The pressure release screw can be the screw that the nylon material was made, and its joining force can set up according to actual need. When the door panel 10 is subjected to a pressure greater than the connection force of the pressure release screw, the pressure release screw is separated from the slide bar 14, so that the door panel 10 is separated from the slide bar 14, and the through cavity 41 is opened to accelerate pressure release. It should be noted that the chain can prevent the door panel 10 from flying outward to hurt people when the pressure release screw is disengaged from the slide bar 14. Wherein, the number of the chains may be two, and the chains are respectively disposed at two sides of the door panel 10.
As a further improvement, a stainless steel mesh door can be arranged in the through cavity 41 to prevent high-temperature and high-pressure metal debris in the through cavity 41 from flying out of the through cavity 41 to damage outside personnel, and meanwhile, the dustproof and small animal-proof effects are achieved.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. The utility model provides an explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard which characterized in that includes: the device comprises a device main body, a door plate, a controller and a pressure relief assembly;
the door plate is vertically arranged on the device main body, and a pressure relief hole penetrating along the horizontal direction is formed in the door plate;
the pressure relief assembly comprises: the outer plate, the inner plate, the push rod, the electromagnet and the spring;
the outer plate is arranged in the pressure relief hole in a sliding manner along the horizontal direction;
the inner plate is located inside the device body;
the electromagnet is fixedly connected with the device main body,
the push rod can be sleeved on the electromagnet in a sliding mode, the front end of the push rod is connected with the outer plate, and the rear end of the push rod is connected with the inner plate;
the front end of the push rod is provided with a magnetic pole;
one end of the spring is connected with the electromagnet, and the other end of the spring is connected with the inner plate;
the controller is electrically connected with the electromagnet and used for controlling the electromagnet to be switched on and off;
the electromagnet is used for driving the push rod to move forwards when being electrified, so that the outer plate slides outwards to the pressure relief Kong Kaiqi;
the spring is used for driving the push rod to move backwards when the electromagnet is powered off, so that the outer plate slides inwards to the pressure relief hole to be sealed.
2. The prefabricated cabin type explosion-proof and pressure-relief device of a switch cabinet according to claim 1, wherein an electric fan is arranged on the inner plate;
the electric fan is electrically connected with the controller.
3. The prefabricated capsule type switchgear explosion-proof pressure relief device of claim 2, further comprising a pressure sensor;
the pressure sensor is arranged in the device main body, is electrically connected with the controller, and is used for sensing a real-time pressure value in the device main body and then sending the real-time pressure value to the controller;
the controller is used for controlling the electromagnet to be electrified when the real-time pressure value is larger than a preset pressure value, judging whether the real-time pressure value is larger than the preset pressure value or not after the electromagnet is electrified for a preset time, and starting the electric fan if the real-time pressure value is larger than the preset pressure value.
4. The prefabricated cabin-type switchgear explosion-proof pressure relief device according to claim 1, further comprising a connecting cylinder;
the connecting cylinder is arranged on the device main body, and a through cavity communicated with the interior of the device main body is arranged in the middle of the connecting cylinder;
the door plate is arranged at the outer end part of the through cavity;
the pressure relief assembly is located in the through cavity.
5. The prefabricated cabin type explosion-proof pressure relief device for switch cabinets of claim 4, wherein the door panel is slidably arranged at the outer end of the through cavity along the vertical direction.
6. The explosion-proof pressure relief device of a prefabricated cabin type switch cabinet according to claim 5, wherein a magnet is arranged on the door panel;
a coil magnet is arranged in the through cavity;
the controller is electrically connected with the coil magnet;
the controller is used for controlling the current direction of the coil magnet to enable the coil magnet to generate attraction force and repulsion force on the magnetic blocks.
7. The explosion-proof pressure relief device of prefabricated cabin type switch cabinet of claim 6, wherein the magnet comprises an upper magnet and a lower magnet;
the upper magnetic block and the lower magnetic block are respectively arranged at the top and the bottom of the door panel;
the coil magnet comprises an upper coil magnet and a lower coil magnet;
the upper coil magnet and the lower coil magnet are respectively arranged at the top and the bottom of the through cavity.
8. The prefabricated cabin type switch cabinet explosion-proof pressure relief device according to claim 4, wherein a toxic gas detector electrically connected with the controller is arranged in the through cavity.
9. The prefabricated cabin type explosion-proof pressure relief device of switch cabinet according to claim 5, wherein the top and bottom of the outer plate are provided with sealing strips.
10. The explosion-proof pressure relief device of prefabricated cabin type cubical switchboard of claim 5, characterized in that, the door plant both sides are provided with the draw runner;
a slide rail for the slide bar to slide along the vertical direction is arranged in the through cavity;
the door plate is connected with the sliding strip through a pressure release screw;
and a chain is connected between the door plate and the connecting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211173963.2A CN115441347A (en) | 2022-09-26 | 2022-09-26 | Explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211173963.2A CN115441347A (en) | 2022-09-26 | 2022-09-26 | Explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard |
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| Publication Number | Publication Date |
|---|---|
| CN115441347A true CN115441347A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211173963.2A Pending CN115441347A (en) | 2022-09-26 | 2022-09-26 | Explosion-proof pressure relief device of prefabricated cabin formula cubical switchboard |
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| CN (1) | CN115441347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954789A (en) * | 2023-03-10 | 2023-04-11 | 山东上九电气科技有限公司 | Inflating cabinet |
-
2022
- 2022-09-26 CN CN202211173963.2A patent/CN115441347A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954789A (en) * | 2023-03-10 | 2023-04-11 | 山东上九电气科技有限公司 | Inflating cabinet |
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