CN115733063A - Outdoor looped netowrk cabinet sealing system - Google Patents
Outdoor looped netowrk cabinet sealing system Download PDFInfo
- Publication number
- CN115733063A CN115733063A CN202211612267.7A CN202211612267A CN115733063A CN 115733063 A CN115733063 A CN 115733063A CN 202211612267 A CN202211612267 A CN 202211612267A CN 115733063 A CN115733063 A CN 115733063A
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- sealing
- main unit
- sealing door
- ring
- ring main
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- 238000007789 sealing Methods 0.000 title claims abstract description 169
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000005057 refrigeration Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000007791 dehumidification Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses an outdoor ring main unit sealing system which comprises a ring main unit body and a sealing door, wherein the sealing door is rotatably connected with the ring main unit body, a sealing cavity is arranged in the sealing door, sliding sealing mechanisms which are vertical to four edges of the sealing door are arranged in the sealing cavity respectively, and a driving assembly for pushing the sliding sealing mechanisms to seal is arranged in the middle of the sealing door; the sliding sealing mechanism comprises a fixing ring positioned in the center and push rods uniformly distributed at the periphery of the fixing ring at intervals of 90 degrees, one end of each push rod is hinged with the fixing ring, the other end of each push rod is hinged with a push block in sliding connection with the inner wall of the sealing cavity, a sealing strip is fixed at the end part of each push block, and the push rods are driven to move through the fixing ring.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to an outdoor ring main unit sealing system.
Background
The ring main unit is a group of high-voltage switch equipment which is arranged in a steel plate metal main unit body or is made into an electrical equipment of an assembled interval ring main power supply unit, and is widely applied to power supply and distribution of newly developed industrial enterprises and public institution buildings at present; to the looped netowrk cabinet that needs outdoor use, its waterproof performance that seals requires highly, needs prevent under the user state that rainwater or moisture from getting into the cabinet internally to cause the influence to inside electrical equipment.
The existing outdoor ring main unit adopts a mode that sealing strips are fixed on the periphery of a sealing door to seal the ring main unit, or an independent sealing mechanism is arranged on the sealing door, but the sealing strip is independently installed, so that the sealing door is inconvenient to close, and the conditions of abrasion and the like of the sealing strip can be generated in the operation processes of maintenance and the like of the ring main unit, and personnel needs to be regularly arranged for replacement; and to the form that sets up sealing mechanism alone, all need carry out sealing mechanism's dismouting when overhauing at every turn or maintaining, the operation of being not convenient for to also there is the condition of neglected loading or assembly mistake after personnel overhaul, make looped netowrk cabinet have the safety risk.
Disclosure of Invention
The technical purpose is as follows: the invention discloses an outdoor ring main unit sealing system which is labor-saving in opening and closing and convenient to overhaul and maintain, and aims to overcome the defects that the existing outdoor ring main unit is sealed and waterproof by using a fixed sealing strip or adding a sealing mechanism, and a sealing door is difficult to open and close during overhaul and maintenance, so that the overhaul and maintenance are inconvenient.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides an outdoor looped netowrk cabinet sealing system, includes looped netowrk cabinet body and sealing door, rotate between sealing door and the looped netowrk cabinet body and be connected, be equipped with sealed chamber in the sealing door, be equipped with in sealed chamber and keep vertically sliding seal mechanism respectively with the sealing door four sides, be equipped with in the middle part of the sealing door and be used for promoting sliding seal mechanism and carry out the drive assembly sealed.
Preferably, the sliding sealing mechanism comprises a fixing ring positioned in the center and push rods uniformly distributed at the periphery of the fixing ring at intervals of 90 degrees, one end of each push rod is hinged with the fixing ring, the other end of each push rod is hinged with a push block in sliding connection with the inner wall of the sealing cavity, a sealing strip is fixed at the end part of each push block, and the push blocks are driven to move by the fixing rings to drive the sealing strips to seal the periphery of the sealing door.
Preferably, the fixing ring of the invention adopts a double-layer structure and comprises an outer ring and an inner ring which are rotatably connected, the outer ring is connected with the push rod, the inner ring is in threaded connection with the guide post fixed in the sealing cavity, the driving assembly comprises a rack and a gear, the gear is sleeved on the guide post, the end part of the gear is fixedly connected with the inner ring, the rack is in sliding connection with the sealing door, the gear teeth of the rack are meshed with the gear, and the gear is pushed by the rack to rotate, so that the inner ring of the fixing ring is driven to rotate on the guide post, and the sealing strip is pushed to move.
Preferably, the rack and the gear are positioned at one end of the inner ring close to the outer side of the ring main unit, and the end part of the rack extends out of the side surface of the sealing door; be equipped with on the looped netowrk cabinet body and be used for the gliding logical groove of rack, be equipped with the dog that is used for the rack restriction at logical inslot at the tip that leads to the groove, the dog adopts L type structure, and the face of dog and the surface laminating of looped netowrk cabinet body are equipped with the otic placode in one side that the dog is close to the sealing door, and it is fixed with the relative locking of sealing door through the otic placode.
Preferably, the sealing strip is detachably mounted on the fixing frame, the fixing frame is connected with the push block through an elastic pressing mechanism, the elastic pressing mechanism comprises a guide rod penetrating through the push block and a spring sleeved on the guide rod, and the end part of the guide rod is fixedly connected with the fixing frame.
Preferably, the guide rod of the invention adopts a Y-shaped structure, the main body part of the guide rod is matched and connected with the push block, and the spring abuts against the forked part of the push block and the guide rod.
Preferably, the ring main unit is internally provided with a dehumidification assembly, the dehumidification assembly comprises a micro turbulent fan arranged on the inner side of the ring main unit body and a refrigeration electrode arranged on the inner surface of a sealing door, the sealing door is provided with a diversion trench for diversion of condensate on the lower portion of the refrigeration electrode, the diversion trench is communicated with a water collection trench arranged at the bottom of the ring main unit body, a drain pipe communicated with the outside for draining is arranged at the bottom of the water collection trench, and the drain pipe is provided with a one-way valve.
Preferably, the inner wall of the sealing door of the present invention adopts a slope structure with gradually increasing thickness from top to bottom, and a corrugated structure is adopted in the corresponding area where the refrigeration electrode is arranged.
Has the advantages that: the sealing system of the outdoor ring main unit provided by the invention has the following beneficial effects:
1. the sealing door is provided with the hollow sealing cavity, the sliding sealing mechanism is arranged in the sealing cavity, and the sliding sealing mechanism can be moved out of the sealing cavity after the sealing door is closed to seal a fit gap between the sealing door and the ring main unit body.
2. The sliding sealing mechanism pushes the push rod through the fixing ring positioned in the center, so that the sealing strip fixed on the push block is driven to move, the periphery of the sealing door can be ensured to be synchronously clamped, the operation is convenient, and the sealing difficulty is reduced.
3. The double-layer structure is adopted in the fixing ring, the inner ring is in threaded connection with the guide pillar, and the gear fixed on the inner ring is driven to rotate through the rack, so that the fixing ring can move in the axial direction of the guide pillar, personnel can directly operate from the side edge of the sealing door, and the sliding sealing mechanism can be driven when the sealing door is closed.
4. According to the invention, the ring main unit body is provided with the through groove for guiding the rack in a sliding manner at one end extending out of the sealing door, after the rack driving gear realizes the sealing of the periphery of the sealing door, the end part of the rack is positioned in the through groove, the end part of the rack is fixed through the stop block arranged at the side edge of the through groove, and meanwhile, the stop block and the sealing door are locked and fixed through the lug plate; before sealing door did not realize sealed, the dog can't be locked with sealing door to avoid in the current sealed form because maintainer misoperation, only close sealing door and do not carry out the sealed situation all around of sealing door, promote outdoor looped netowrk cabinet's security.
5. The sealing strip is detachably fixed on the fixing frame, and the fixing frame is connected with the push block through the elastic pressing mechanism, so that machining errors can be compatible, the sealing strip is guaranteed to be tightly attached to the inner wall of the ring main unit body, and the sealing effect is better.
6. The guide rod of the invention adopts a Y-shaped structure, the forked end is connected with the fixing frame, the main body part is connected with the push block in a sliding fit manner, the symmetric stress of the sealing strip is ensured, and the sealing performance of each part is balanced, thereby avoiding local air leakage caused by deflection.
7. The invention also arranges a dehumidifying component in the ring main unit, and dehumidifies the air remained in the main unit after maintenance, thereby keeping the internal environment dry and prolonging the service life of the equipment in the outdoor ring main unit.
8. According to the invention, the miniature turbulent fan is used for performing gas turbulence, so that air flows in the ring main unit body, and when the air passes through the low-temperature refrigeration electrode, water vapor can be condensed and liquefied, so that the gas in the ring main unit is dehumidified, and the internal environment is ensured to be dry.
9. The sealing door of the invention adopts a corrugated structure at the position of the refrigeration electrode, thereby increasing the retention time of gas at a heat exchange position and improving the effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is a view showing the construction of the sliding seal mechanism of the present invention;
FIG. 3 is a view of the end face of the retaining ring of the present invention;
FIG. 4 is a side partial cross-sectional view of the sealing door of the present invention;
the ring main unit comprises a ring main unit body 1, a ring main unit body 2, a sealing door 3, a sealing cavity 4, a sliding sealing mechanism 5, a fixing ring 6, a push rod 7, a push block 8, a sealing strip 9, an outer ring 10, an inner ring 11, a guide post 12, a rack 13, a gear 14, a through groove 14, a stop block 15, an ear plate 16, a guide rod 17, a spring 18, a refrigeration electrode 19, a diversion trench 20 and a fixing frame 21.
Detailed Description
The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the invention to the described embodiment.
As shown in fig. 1-4, the sealing system for the outdoor ring main unit disclosed by the present invention comprises a ring main unit body 1 and a sealing door 2, wherein the sealing door 2 is rotatably connected with the ring main unit body 1, a sealing chamber 3 is arranged in the sealing door 2, sliding sealing mechanisms 4 respectively keeping vertical to four sides of the sealing door 2 are arranged in the sealing chamber 3, and a driving assembly for driving the sliding mechanisms 4 to seal is arranged in the middle of the sealing door 4.
According to the outdoor ring main unit structure, after the sealing door 2 is closed, the sliding sealing mechanism 4 is driven by the driving assembly, so that the sealing strip can move out of the opening formed in the side wall of the sealing door and is abutted against the side wall of the ring main unit body 1, the opening of the ring main unit body 1 is sealed, the opening and closing difficulty of the sealing door is reduced, later-period maintenance is facilitated, and meanwhile, the sealing strip can be prevented from being abraded in the opening and closing process of the sealing door.
Specifically, the sliding sealing mechanism 4 comprises a fixing ring 5 positioned in the center and push rods 6 uniformly distributed at intervals of 90 degrees around the fixing ring 5, one end of each push rod 6 is hinged with the fixing ring 5, the other end of each push rod 6 is hinged with a push block 7 in sliding connection with the inner wall of the sealing cavity 3, a sealing strip 8 is fixed at the end part of each push block 7, and the fixing ring 5 drives the push rods 6 to move, so that the push blocks 7 drive the sealing strips 8 to seal the periphery of the sealing door 2. The fixing ring 5 is of a double-layer structure and comprises an outer ring 9 and an inner ring 10 which are connected in a rotating mode, the outer ring 9 is connected with the push rod 6, the inner ring 10 is in threaded connection with a guide pillar 11 fixed in the sealing cavity 3, the driving assembly comprises a rack 12 and a gear 13, the gear 13 is sleeved on the guide pillar 11, the end portion of the gear 13 is fixedly connected with the inner ring 10, the rack 12 is in sliding connection with the sealing door 2, the gear teeth of the rack 12 are meshed with the gear 13, the gear 13 is pushed to rotate through the rack 12, the inner ring 10 of the fixing ring 5 is driven to rotate on the guide pillar 11, and the sealing strip 2 is pushed to move.
The inner ring 10 is driven to rotate on the guide post 11 through a rack and gear mechanism, so that the axial movement is realized, and the sliding of the push block 7 is pushed; when the gap between the sealing door 2 and the ring main unit body 1 is closed, the sealing door 2 can be directly operated in a closed state, the sealing difficulty is simplified, and quick sealing is realized.
In addition, the rack 12 and the gear 13 are positioned at one end of the inner ring 10 close to the outer side of the ring main unit, and the end part of the rack 12 extends out of the side surface of the sealing door 2; be equipped with on looped netowrk cabinet body 1 and be used for the gliding logical groove 14 of rack 12, be equipped with the dog 15 that is used for restricting rack 12 in logical groove 14 at the tip that leads to groove 14, dog 15 adopts L type structure, and the face of dog 15 and the surface laminating of looped netowrk cabinet body 1 are equipped with otic placode 16 in one side that dog 15 is close to sealing door 2, and is fixed with sealing door 2 relative locking through otic placode 16. The situation that only the sealing door is locked and sealing is forgotten can be avoided, before sealing is not completed, the rack 12 is located outside the through groove 14, locking between the stop block and the sealing door through the lug plate 16 cannot be achieved, reliability of the sealing structure is improved, and people do not need to worry about forgetting the situation.
In order to facilitate the replacement of the sealing strip 8 which is exposed for a long time and generates weathering and the like, and simultaneously ensure the sealing effect, the sealing strip 8 is detachably arranged on a fixed frame 21, the fixed frame 21 is connected with a push block 7 through an elastic pressing mechanism, the elastic pressing mechanism comprises a guide rod 17 penetrating through the push block 7 and a spring 18 sleeved on the guide rod 17, the end part of the guide rod 17 is fixedly connected with the fixed frame and is locked through a small screw on the fixed frame; the guide rod 17 adopts a Y-shaped structure, the main body part of the guide rod 17 is matched and connected with the push block 7, and the spring 18 is abutted against the forked part of the push block 7 and the guide rod 17, so that the stress of the fixing frame 21 is balanced, and the generation of gaps caused by uneven stress is avoided.
The sliding sealing mechanism can keep the sealing performance for a long time when the sealing door is closed, and prevent external water vapor or rainwater and the like from entering the ring main unit body 1; but because when carrying out the looped netowrk cabinet at every turn and opening the door and maintaining, outside air also can get into this internal, though can avoid outside steam to get into through sealing door, but sealed in the gas of outdoor looped netowrk cabinet, if there is moisture, can be along with external environment's change, situations such as production condensation also can influence the performance of electrical equipment in the looped netowrk cabinet.
Therefore, the invention is provided with a dehumidification component in the ring main unit, the dehumidification component comprises a micro turbulent fan arranged at the inner side of the ring main unit body 1 and a refrigeration electrode 19 arranged at the inner surface of the sealing door 2, the sealing door 2 is provided with a diversion trench 20 for diversion of condensate at the lower part of the refrigeration electrode 19, the diversion trench 20 is communicated with a water collecting trench at the bottom of the ring main unit body 1, the bottom of the water collecting trench is provided with a drain pipe communicated with the outside for draining, the drain pipe is provided with a one-way valve, the inner wall of the sealing door 2 adopts an inclined plane structure with gradually increased thickness from top to bottom, and a corresponding area provided with the refrigeration electrode 19 adopts a corrugated structure, so that disturbed air can be blocked, the contact time of the air and a condensation area where the refrigeration electrode 19 is located is prolonged, and the condensation dehumidification effect is improved; and discharge looped netowrk cabinet through guiding gutter 20 and drain pipe, guarantee the drying of outdoor looped netowrk cabinet internal environment, promote electrical equipment's life.
When the outdoor ring main unit sealing system is used, the sealing door 2 is closed in a state that the push rod 16 is retracted, at the moment, the end part of the rack 12 exceeds the side surface of the ring main unit body 1, the stop block 15 and the sealing door 2 cannot be locked, the rack 12 needs to be pushed to move towards a sealing cavity of the sealing inner 2 to drive the gear 13 to rotate, the inner ring 10 can rotate along with the gear 13, the inner ring 10 is in threaded connection with the guide pillar 11 and can slide along the axial direction of the guide pillar 11, the outer ring 9 moves along with the inner ring, and the push rod 6 pushes the push block 7 to slide under the driving of the outer ring 9, so that the sealing strip 8 can be abutted against the inner wall of the ring main unit cup body 1, and the elastic pressing mechanism is compatible with processing errors, and the sealing strip is in elastic contact with the ring main unit body; when the end of the rack enters the edge of the through groove 14, the stopper 15 is rotated, so that the stopper 15 limits the rack 12 in the through groove, and the stopper 15 is locked with the sealing door 2 to complete sealing. After sealing, the micro turbulent fan is started to disturb the airflow inside the ring main unit, so that the gas can flow through the refrigeration electrode 19, water vapor in the gas is pre-cooled and liquefied, enters the water collecting tank from the flow guide groove 19, and is discharged out of the one-way valve through the water discharge pipe, and the drying of the internal environment of the ring main unit body is kept.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides an outdoor looped netowrk cabinet sealing system, its characterized in that, includes looped netowrk cabinet body (1) and sealing door (2), rotate between sealing door (2) and looped netowrk cabinet body (1) and be connected, be equipped with sealed chamber (3) in sealing door (2), be equipped with in sealed chamber (3) and keep vertically sliding seal mechanism (4) respectively with sealing door (2) four sides, be equipped with in sealing door (4) middle part and be used for promoting sliding seal mechanism (4) to carry out the drive assembly sealed.
2. The outdoor ring main unit sealing system according to claim 1, wherein the sliding sealing mechanism (4) comprises a fixing ring (5) located at the center, and push rods (6) evenly distributed along 90 degrees of interval angles around the fixing ring (5), one end of each push rod (6) is hinged to the fixing ring (5), the other end of each push rod is hinged to a push block (7) in sliding connection with the inner wall of the sealing cavity (3), sealing strips (8) are fixed at the end portions of the push blocks (7), the push rods (6) are driven to move through the fixing ring (5), and the push blocks (7) drive the sealing strips (8) to seal the periphery of the sealing door (2).
3. The outdoor ring main unit sealing system according to claim 2, wherein the fixing ring (5) is of a double-layer structure and comprises an outer ring (9) and an inner ring (10) which are rotatably connected, the outer ring (9) is connected with the push rod (6), the inner ring (10) is in threaded connection with a guide post (11) fixed in the sealing cavity (3), the driving assembly comprises a rack (12) and a gear (13), the gear (13) is sleeved on the guide post (11), the end of the gear (13) is fixedly connected with the inner ring (10), the rack (12) is in sliding connection with the sealing door (2), the teeth of the rack (12) are meshed with the gear (13), the gear (13) is pushed to rotate through the rack (12), and the inner ring (10) of the fixing ring (5) is driven to rotate on the guide post (11) to push the sealing strip (2) to move.
4. An outdoor ring main unit sealing system according to claim 3, wherein the rack (12) and the gear (13) are located at one end of the inner ring (10) close to the outside of the ring main unit, and the end of the rack (12) extends out of the side surface of the sealing door (2); be equipped with on looped netowrk cabinet body (1) and be used for gliding logical groove (14) of rack (12), the tip that leads to groove (14) is equipped with dog (15) that are used for restricting rack (12) in leading to groove (14), dog (15) adopt L type structure, the surface of dog (15) and the surface laminating of looped netowrk cabinet body (1), be equipped with otic placode (16) in dog (15) one side near sealing door (2), it fixes to lock relatively through otic placode (16) and sealing door (2).
5. The outdoor ring main unit sealing system according to claim 2, wherein the sealing strip (8) is detachably mounted on a fixing frame (21), the fixing frame (21) is connected with the push block (7) through an elastic pressing mechanism, the elastic pressing mechanism comprises a guide rod (17) penetrating through the push block (7) and a spring (18) sleeved on the guide rod (17), and an end of the guide rod (17) is fixedly connected with the fixing frame.
6. The outdoor ring main unit sealing system according to claim 5, wherein the guide rod (17) adopts a Y-shaped structure, the main body part of the guide rod (17) is in fit connection with the push block (7), and the spring (18) abuts against the branch part of the push block (7) and the guide rod (17).
7. The sealing system of the outdoor ring main unit according to claim 1, wherein a dehumidifying component is arranged in the ring main unit, the dehumidifying component comprises a micro turbulent fan arranged inside the ring main unit body (1) and a refrigerating electrode (19) arranged on the inner surface of the sealing door (2), a guiding gutter (20) for guiding condensate is arranged on the lower portion of the refrigerating electrode (19) of the sealing door (2), the guiding gutter (20) is communicated with a water collecting gutter arranged at the bottom of the ring main unit body (1), a drain pipe communicated with the outside for draining water is arranged at the bottom of the water collecting gutter, and a one-way valve is arranged on the drain pipe.
8. An outdoor ring main unit sealing system according to claim 7, wherein the inner wall of the sealing door (2) adopts a slope structure with gradually increasing thickness from top to bottom, and a corrugated structure is adopted in the corresponding area where the refrigeration electrode (19) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211612267.7A CN115733063A (en) | 2022-12-15 | 2022-12-15 | Outdoor looped netowrk cabinet sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211612267.7A CN115733063A (en) | 2022-12-15 | 2022-12-15 | Outdoor looped netowrk cabinet sealing system |
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| Publication Number | Publication Date |
|---|---|
| CN115733063A true CN115733063A (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211612267.7A Pending CN115733063A (en) | 2022-12-15 | 2022-12-15 | Outdoor looped netowrk cabinet sealing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN115733063A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696923A (en) * | 2016-03-31 | 2016-06-22 | 句容市后白镇福临门木门加工厂 | Sealing wooden door |
| CN110649492A (en) * | 2018-06-27 | 2020-01-03 | 殷文 | Damp-proof communication electric power cabinet |
| CN113833926A (en) * | 2021-11-26 | 2021-12-24 | 中国飞机强度研究所 | Push-pull type heat preservation sealing device for high-low temperature test of airplane |
| CN113851940A (en) * | 2021-09-14 | 2021-12-28 | 湖北省电力装备有限公司 | High protection level sealing mechanism for ring main unit |
| CN218040254U (en) * | 2022-07-26 | 2022-12-13 | 四川红华电气有限公司 | Box-type substation door seal structure |
-
2022
- 2022-12-15 CN CN202211612267.7A patent/CN115733063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696923A (en) * | 2016-03-31 | 2016-06-22 | 句容市后白镇福临门木门加工厂 | Sealing wooden door |
| CN110649492A (en) * | 2018-06-27 | 2020-01-03 | 殷文 | Damp-proof communication electric power cabinet |
| CN113851940A (en) * | 2021-09-14 | 2021-12-28 | 湖北省电力装备有限公司 | High protection level sealing mechanism for ring main unit |
| CN113833926A (en) * | 2021-11-26 | 2021-12-24 | 中国飞机强度研究所 | Push-pull type heat preservation sealing device for high-low temperature test of airplane |
| CN218040254U (en) * | 2022-07-26 | 2022-12-13 | 四川红华电气有限公司 | Box-type substation door seal structure |
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