An environmentally friendly gas ring main unit sealing structure

Abstract

The present application relates to a sealing structure for an environmentally friendly gas ring network cabinet, and relates to the technical field of ring network cabinets. The structure includes a cabinet door structure, which includes a cabinet door frame and a cabinet door panel. A folding sealing tube is provided on the surface of the cabinet door frame in the circumferential direction. The folding sealing tube is corrugated, and at least two telescopic outer tubes are provided at one end of the folding sealing tube. A rotating pin is slidably connected to the inside of the telescopic outer tube. The rotating pin extends out of the end of the telescopic outer tube and is rotatably connected to a hinge. The hinge is connected to the cabinet door panel, and a locking mechanism for fixing the two is provided between the telescopic outer tube and the rotating pin; a plurality of magnetic sheets are provided on the side of the cabinet door panel facing the cabinet door frame, and an abutment sheet is provided on the side of the folding sealing tube away from the frame door cabinet. A clearance groove for the magnetic sheet to be inserted is provided on the surface of the abutment sheet, and the magnetic sheet is magnetically attracted to the inner wall of the clearance groove. The present application has the effect of improving the sealing performance of the environmentally friendly gas ring network cabinet and reducing the probability of leakage of environmentally friendly gas.

Description

Technical Field

[0001] The present application relates to the technical field of ring main unit (RMU), and in particular to a sealing structure of an environmentally friendly gas RMU. Background Art

[0002] The environmentally friendly gas ring main unit (RMU) is a new type of high-voltage switchgear that uses protective insulating gas instead of traditional sulfur hexafluoride gas. It is mainly used in the ring network power supply system of urban distribution networks. With the global attention paid to environmental protection and greenhouse gas emission reduction, the environmentally friendly gas RMU has gradually become an important direction for distribution network equipment upgrades due to its low-carbon and environmentally friendly characteristics. The cabinet door of the existing environmentally friendly gas RMU is mainly connected to the cabinet body by hinges and lacks a sealing structure. Therefore, the gas inside the RMU gas chamber is prone to leakage, which shortens the service life of the RMU and requires frequent replenishment of environmentally friendly gas, resulting in low economic benefits. Therefore, there is room for improvement. Summary of the Invention

[0003] In order to improve the sealing performance of an environmentally friendly gas ring main unit and reduce the probability of environmentally friendly gas leakage, the present application provides a sealing structure for an environmentally friendly gas ring main unit.

[0004] The present application provides an environmentally friendly gas ring network cabinet sealing structure that adopts the following technical solutions:

[0005] A sealing structure for an environmentally friendly gas ring network cabinet comprises a cabinet door structure, wherein the cabinet door structure comprises a cabinet door frame and a cabinet door panel, wherein the cabinet door frame is arranged outside the air chamber of the environmentally friendly gas ring network cabinet, and a folding sealing tube is provided on the surface of the cabinet door frame in a circumferential direction, wherein the folding sealing tube is corrugated, and at least two telescopic outer tubes are provided at one end of the folding sealing tube, wherein a rotating pin is slidably connected to the inside of the telescopic outer tube, and the end of the rotating pin extending out of the telescopic outer tube is rotatably connected to a hinge, wherein the hinge is connected to the cabinet door panel, and a locking mechanism for fixing the two is provided between the telescopic outer tube and the rotating pin; a plurality of magnetic sheets are provided on the side of the cabinet door panel facing the cabinet door frame, and an abutment sheet is provided on the side of the folding sealing tube away from the frame door cabinet, and a clearance groove for the magnetic sheet to be pressed into the surface of the abutment sheet, and the magnetic sheet is magnetically attracted to the inner wall of the clearance groove.

[0006] By adopting the above technical solution, when the cabinet door panel and the cabinet door frame are closed, the cabinet door panel is pushed along the direction of the telescopic outer tube so that the locking mechanism fixes the cabinet door panel and the cabinet door frame. At this time, the folding sealing tube is compressed under the pressure of the cabinet door panel. Since the folding sealing tube is located between the cabinet door panel and the cabinet door frame, it will be able to block the gap between the cabinet door panel and the cabinet door frame to prevent the gas inside the air chamber from leaking. At the same time, since the cabinet door panel is provided with a magnetic sheet, it will be magnetically attracted to the inner wall of the give way groove, thereby effectively improving the stability between the cabinet door panel and the cabinet door body, preventing the cabinet door panel from loosening relative to the cabinet door frame, so as to ensure the folding state of the sealing folding tube and improve the overall sealing performance.

[0007] Preferably, a sealing gasket is provided in the folding sealing tube, and the end of the sealing gasket away from the cabinet door frame is wavy. A wavy protrusion is provided on the inner wall of the folding sealing tube away from the cabinet door frame, and the wavy protrusion is staggered with the wavy structure of the sealing gasket.

[0008] By adopting the above-mentioned technical solution, a sealing gasket and a wave protrusion are set up, and when the folding sealing tube is damaged, the sealing inside the folding sealing tube can be improved by the wave-like structure and the wave protrusion, as well as the pressure against the inner wall of the folding sealing tube, thereby reducing the probability of leakage of environmental protection gas.

[0009] Preferably, the locking mechanism includes a locking ring, two first locking rods, two second locking rods and two first return torsion springs, the first locking rod, the second locking rod and the first return torsion spring corresponding to each other one by one; the locking ring is arranged on an end wall of the rotating pin close to the bottom wall of the telescopic outer tube, the two first locking rods are both arranged on the bottom wall of the telescopic outer tube, the two first locking rods are arranged with one end away from the bottom wall of the telescopic outer tube and are inclined in a direction approaching each other, the second locking rod is rotatably connected to the end of the corresponding first locking rod away from the bottom wall of the telescopic outer tube, the second locking rod is arranged with one end away from the first locking rod and is inclined towards the bottom wall of the telescopic outer tube, the two second locking rods are abutted against one end away from their respective first locking rods, the first return torsion spring is arranged at the corresponding first locking rod and second locking rod rotation connection, the first return torsion spring enables the second locking rod to maintain a rotation tendency in the direction away from the bottom wall of the telescopic outer tube, and the outer wall of the telescopic outer tube is provided with an unlocking mechanism for separating the locking ring and the second locking rod.

[0010] By adopting the above technical solution, after closing the cabinet door frame and the cabinet door panel, pushing the cabinet door panel along the direction of the telescopic outer tube, thereby causing the rotating pin to slide along the direction of the telescopic outer tube, the locking ring will abut against the two second locking rods and drive the second locking rods to rotate until one end of the locking ring passes through the second locking rod. Under the action of the first return torsion spring, the second locking rod returns after losing the abutment of the locking ring. Thus, the two second locking rods after closing will be sleeved with the locking ring, realizing the locking of the rotating pin and the cabinet door panel. The structure is simple, the operation is convenient, and it has high practicability.

[0011] Preferably, a limit baffle is provided at one end of the first locking rod close to the second locking rod, and the limit baffle is located on the side of the second locking rod away from the bottom wall of the telescopic outer tube.

[0012] By adopting the above technical solution, setting the limit baffle can limit the maximum rotation amplitude of the second locking rod, thereby preventing the two second locking rods from being misaligned under the action of the first return torsion spring.

[0013] Preferably, the unlocking mechanism includes an unlocking push rod, an unlocking rack, an unlocking gear, a transmission shaft and an unlocking cam. An unlocking groove for the unlocking push rod to insert and slide is provided on the outer wall of the telescopic outer tube. An unlocking cavity is provided in the bottom wall of the telescopic outer tube. The unlocking groove communicates with the unlocking cavity. The unlocking rack is arranged at one end of the unlocking push rod located in the unlocking cavity. The unlocking gear is rotatably connected to the inner wall of the unlocking cavity. The unlocking gear meshes with the unlocking rack. The transmission shaft is coaxially arranged with the unlocking gear. The unlocking cam is sleeved on the peripheral wall of the transmission shaft. Two rotating grooves are provided on the bottom wall of the telescopic outer tube. The first locking rod is rotatably connected in the rotating groove. A second return torsion spring is provided at the rotating connection of the first locking rod and the rotating groove. The second return torsion spring drives the two first locking rods to rotate in the direction away from each other. A contact rod is provided at the bottom end of the first locking rod. The contact rod abuts against the outer wall of the unlocking cam.

[0014] By adopting the above technical solution, when unlocking is required, press the unlocking push rod so that the unlocking push rod moves along the unlocking groove, thereby driving the unlocking rack to move. Through the meshing relationship between the unlocking rack and the unlocking gear, and then by the transmission shaft, the unlocking cam is driven to rotate. When the diameter end of the longer end of the unlocking cam abuts against the contact rod, the two first locking rods remain in a state of approaching each other. When the unlocking cam rotates so that the diameter end of its shorter end abuts against the contact rod, under the action of the second return torsion spring, the two first locking rods move away from each other. At this time, the two second locking rods also move away from each other following the corresponding first locking rods. At this time, the locking ring can be disengaged from between the two second locking rods on both sides, thereby realizing the unlocking function.

[0015] Preferably, a synchronizing piece for connecting the two unlocking push rods is arranged on the end wall of the telescopic outer tube where the two unlocking push rods are located.

[0016] By adopting the above technical solution, the setting of the synchronizing piece facilitates the simultaneous activation of the upper and lower unlocking mechanisms, thereby improving the convenience of disassembling the cabinet door panel and the cabinet door frame.

[0017] Preferably, a sealing ring sleeve is arranged on the peripheral wall of the rotating pin. The sealing ring sleeve abuts against the inner wall of the telescopic outer tube. A wedge-shaped block is arranged on the outer wall of the sealing ring sleeve. A wedge-shaped groove for the wedge-shaped block to be embedded and slide in is arranged on the inner wall of the telescopic outer tube along the depth direction.

[0018] By adopting the above technical solution, the setting of the sealing ring sleeve can prevent gas from entering the telescopic outer tube and then leaking through the telescopic outer tube. The setting of the wedge-shaped block can ensure the sliding track of the rotating pin and ensure the stable locking of the locking mechanism.

[0019] Preferably, the size of the cabinet door panel is larger than that of the cabinet door frame. A plurality of fastening suction cups are arranged on the part of the cabinet door panel that extends beyond the cabinet door frame.

[0020] By adopting the above technical solution, the setting of the fastening suction cups can improve the stability of the cabinet door panel in the closed state, thereby effectively improving the sealing performance between the cabinet door panel and the cabinet door frame.

[0021] Preferably, a first sealing groove is arranged on the surface of the cabinet door panel facing the cabinet door frame along the circumferential direction. A second sealing groove is arranged on the peripheral wall of the cabinet door frame along the circumferential direction. A first sealing airbag and a second sealing airbag are respectively arranged in the first sealing groove and the second sealing groove. An inflating member for filling gas into the first sealing airbag and the second sealing airbag is arranged on the outer wall of the cabinet door panel and the cabinet door frame.

[0022] By adopting the above technical solution, after the cabinet door panel and the cabinet door frame are closed, the inflating member can inflate the first sealing airbag and the second sealing airbag, so as to fill the gap between the cabinet door panel and the cabinet door frame, and effectively improve the sealing performance of the sealing structure of the present application.

[0023] Preferably, after being inflated, the first sealing airbag is located around the second sealing airbag. An embedding groove for the top of the second sealing airbag to abut against is arranged on the surface of the first sealing airbag facing the second sealing airbag.

[0024] By adopting the above technical solution, arranging the embedding groove at the bottom of the first sealing airbag can effectively improve the matching tightness between the first sealing airbag and the second sealing airbag, thereby further improving the sealing performance between the cabinet door panel and the cabinet door frame and reducing gas leakage.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the cabinet door panel and the cabinet door frame are closed, the cabinet door panel is pushed in the direction of the telescopic outer tube so that the locking mechanism fixes the cabinet door panel and the cabinet door frame. At this time, the folding sealing tube is compressed under the pressure of the cabinet door panel. Since the folding sealing tube is located between the cabinet door panel and the cabinet door frame, it will be able to block the gap between the cabinet door panel and the cabinet door frame to prevent the gas inside the air chamber from leaking out. At the same time, since the cabinet door panel is provided with a magnetic attraction piece, it will be magnetically attracted to the inner wall of the give way groove, thereby effectively improving the stability between the cabinet door panel and the cabinet door body, preventing the cabinet door panel from loosening relative to the cabinet door frame, thereby ensuring the folding state of the sealing folding tube and improving the overall sealing performance;

[0027] 2. The sealing gasket and the wave protrusion are set up to improve the sealing inside the folding sealing tube through the wave-like structure and the wave protrusion, as well as the pressure against the inner wall of the folding sealing tube when the folding sealing tube is damaged, thereby reducing the probability of leakage of environmental protection gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of an environmentally friendly gas ring network cabinet sealing structure in an embodiment of the present application.

[0029] Figure 2 It is a schematic structural diagram of the folding sealing tube of an embodiment of the present application.

[0030] Figure 3 It is a schematic structural diagram of the telescopic outer tube of an embodiment of the present application.

[0031] Figure 4 It is a schematic diagram of the structure inside the telescopic outer tube of an embodiment of the present application.

[0032] Figure 5 It is a structural schematic diagram of the locking mechanism of an embodiment of the present application.

[0033] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.

[0034] Figure 7 It is a cross-sectional view of the first sealing airbag and the second sealing airbag of an embodiment of the present application.

[0035] Explanation of reference numerals: 1. cabinet door structure; 2. cabinet door frame; 21. second sealing groove; 22. second sealing airbag; 3. cabinet door panel; 31. magnetic sheet; 32. fastening suction cup; 33. first sealing groove; 34. first sealing airbag; 341. fitting groove; 35. inflatable member; 4. folding sealing tube; 41. sealing pad; 42. wave protrusion; 5. telescopic outer tube; 51. unlocking groove; 52. unlocking cavity; 53. rotation groove; 54. wedge-shaped groove; 6. rotation pin; 61. Sealing ring sleeve; 62. Wedge block; 7. Hinge; 8. Locking mechanism; 81. Locking ring; 82. First locking rod; 821. Limit baffle; 822. Abutment rod; 83. Second locking rod; 84. First return torsion spring; 85. Second return torsion spring; 86. Synchronizing plate; 9. Abutment plate; 91. Giving groove; 10. Unlocking mechanism; 101. Unlocking push rod; 102. Unlocking rack; 103. Unlocking gear; 104. Transmission shaft; 105. Unlocking cam. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-7 This application is described in further detail.

[0037] The embodiment of the present application discloses a sealing structure of an environmentally friendly gas ring network cabinet. Figure 1 and Figure 2 , including a cabinet door structure 1, the cabinet door structure 1 includes a cabinet door frame 2 and a cabinet door panel 3, the cabinet door frame 2 is arranged outside the air chamber of the protective gas ring network cabinet, and a folding sealing tube 4 is provided along the circumferential direction on the side wall of the cabinet door frame 2 away from the ring network cabinet. In this embodiment, the folding sealing tube 4 is made of rubber, and the cross-section of the folding sealing tube 4 is a corrugated tube. Under external pressure, the folding sealing tube 4 can be folded toward the direction of the ring network cabinet; the folding sealing tube 4 is filled with a sealing gasket 41, and the side of the sealing gasket 41 away from the cabinet door frame 2 is a wavy structure, and the inner wall of the folding sealing tube 4 away from the cabinet door frame 2 is formed with a wavy protrusion 42, and the wavy protrusion 42 is staggered with the wavy structure of the sealing gasket 41. When the folding sealing tube 4 is squeezed, the wavy protrusion 42 will be embedded with the wavy structure to prevent the outer wall of the folding sealing tube 4 from being damaged and the gas leakage inside the air chamber, further improving the sealing performance of the folding sealing tube 4.

[0038] Reference Figure 1 , Figure 3 and Figure 4, at least two notches are provided on the vertical side of one side of the folding and sealing tube 4, and a telescopic outer tube 5 is arranged in each notch. In this embodiment, the telescopic outer tube 5 is square, but its internal is provided with a cylindrical hole. A rotating pin 6 is slidably connected inside the telescopic outer tube 5. One end of the rotating pin 6 away from the bottom wall of the telescopic outer tube 5 is rotatably connected to a hinge 7. The hinge 7 is L-shaped. One end of the hinge 7 located outside the telescopic outer tube 5 is connected to the cabinet door panel 3. When the rotating pin 6 is completely located inside the telescopic outer tube 5, the rotation of the cabinet door panel 3 relative to the cabinet door frame body 2 will be restricted. A locking mechanism 8 is arranged inside the telescopic outer tube 5 for fixing the rotating pin 6 and the telescopic outer tube 5. To further improve the sealing performance, the length of the telescopic outer tube 5 is less than the thickness of the folding and sealing tube 4. Therefore, a rubber cushion block is arranged in the gap between the outer wall of the telescopic outer tube 5 and the cabinet door panel 3 to improve the sealing performance and facilitate stretching and folding at the same time.

[0039] Referring to Figure 4 , Figure 5 and Figure 6 , the locking mechanism 8 includes a locking ring 81, two first locking rods 82, two second locking rods 83 and two first return torsion springs 84. Among them, the first locking rod 82, the second locking rod 83 and the first return torsion spring 84 are arranged in one-to-one correspondence; the locking ring 81 is arranged on the end wall of one end of the rotating pin 6 close to the bottom wall of the telescopic outer tube 5. The two first locking rods 82 are both arranged on the bottom wall of the telescopic outer tube 5. The two first locking rods 82 are symmetrically arranged with respect to the locking ring 81. One end of the two first locking rods 82 away from the bottom wall of the telescopic outer tube 5 is inclined towards the direction of approaching each other. The second locking rod 83 is rotatably connected to one end of the corresponding first locking rod 82 away from the bottom wall of the telescopic outer tube 5. In the initial state, the other end of the second telescopic rod is arranged towards the bottom wall of the telescopic outer tube 5. The first return torsion spring 84 is arranged at the rotating connection of the first locking rod 82 and the second locking rod 83. Under the action of the first return torsion spring 84, both of the two second locking rods 83 maintain a movement trend towards the direction away from the bottom wall of the telescopic outer tube 5, and the ends of the two second locking rods 83 are in contact with each other. A limit baffle 821 is arranged at the end of the first locking rod 82 close to the second locking rod 83. The limit baffle 821 is located on the side of the second locking rod 83 away from the bottom wall of the telescopic outer tube 5 for restricting the rotation angle of the second locking rod 83; in this embodiment, a ring-shaped structure is formed on the peripheral wall of the rotating pin 6, and a spring is arranged between the ring-shaped structure and the bottom wall of the telescopic outer tube 5. Under the action of the spring, the rotating pin 6 always maintains a movement trend towards the outside of the telescopic outer tube 5.

[0040] Referring to Figure 4 , Figure 5 and Figure 6, unlocking mechanisms 10 are provided on both of the two telescopic outer tubes 5 for releasing the sleeved relationship between the locking ring 81 and the two second locking rods 83. The unlocking mechanism 10 includes an unlocking push rod 101, an unlocking rack 102, an unlocking gear 103, a transmission shaft 104, and an unlocking cam 105. An unlocking groove 51 for inserting and sliding the unlocking push rod 101 is formed on the outer wall of the telescopic outer tube 5, and an unlocking cavity 52 is formed at the bottom of the telescopic outer tube 5. The unlocking cavity 52 communicates with the unlocking groove 51. One end of the unlocking push rod 101 is inserted into the unlocking cavity 52, and the unlocking rack 102 is formed at one end of the unlocking push rod 101 located in the unlocking cavity 52. The unlocking gear 103 is rotatably connected to the inner wall of the unlocking cavity 52, and the unlocking rack 102 meshes with the unlocking gear 103. The transmission shaft 104 is coaxially arranged with the unlocking gear 103, and the unlocking cam 105 is sleeved on the peripheral wall of the transmission shaft 104 to rotate synchronously with the unlocking gear 103.

[0041] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , two rotating grooves 53 are formed on the bottom wall of the telescopic outer tube 5. The rotating grooves 53 communicate with the unlocking cavity 52. One end of each of the first locking rods 82 is rotatably connected to the inner wall of the rotating groove 53. A second return torsion spring 85 is provided at the rotating connection between the first locking rod 82 and the inner wall of the rotating groove 53. Under the action of the second return torsion spring 85, the two first locking rods 82 maintain a tendency to move away from each other. An abutting rod 822 is provided at one end of the first locking rod 82 located in the unlocking cavity 52. The abutting rod 822 abuts against the outer wall of the unlocking cam 105. When the abutting position is at the end with a longer diameter of the unlocking cam 105, the unlocking cam 105 causes the two first locking rods 82 to move closer. When the unlocking cam 105 rotates, the abutting position changes to the end with a shorter diameter of the unlocking cam 105. Under the action of the second return torsion spring 85, the two first locking rods 82 move away from each other, driving the second locking rods 83 to move away from each other, so as to release the sleeved relationship between the locking ring 81 and the second locking rod 83. In this embodiment, a synchronizing piece 86 is provided at one end of the two unlocking push rods 101 located outside the telescopic outer tube 5. The synchronizing piece 86 is used to connect the two unlocking push rods 101 to keep the movement states of the two unlocking push rods 101 synchronized.

[0042] Refer to Figure 4 , a sealing ring sleeve 61 is sleeved on the peripheral wall of the rotating pin 6. The sealing ring sleeve 61 abuts against the inner wall of the telescopic outer tube 5. A wedge-shaped block 62 is formed on the outer wall of the sealing ring sleeve 61. A wedge-shaped groove 54 for embedding the wedge-shaped block 62 is formed on the inner wall of the telescopic outer tube 5, so as to facilitate the sliding of the sealing ring sleeve 61, thereby isolating the environmental protection gas from entering the telescopic sleeve, and at the same time, it can also limit the sliding direction of the rotating pin 6, and further realize the stable locking of the locking mechanism 8.

[0043] Refer to Figure 1 andFigure 2 , a plurality of magnetic sheets 31 are provided on the side of the cabinet door panel 3 facing the cabinet door frame 2, and a contact sheet 9 is provided on the side of the folding sealing tube 4 facing the cabinet door panel 3. A clearance groove 91 for the magnetic sheet 31 to be pressed into the surface of the contact sheet 9 is opened, and the magnetic sheet 31 is magnetically attracted to the bottom wall of the clearance groove 91. In this embodiment, the magnetic sheet 31 adopts a magnet, thereby improving the stability of the cabinet door panel 3 and the cabinet door frame 2 after being locked; the size of the cabinet door panel 3 is larger than the size of the cabinet door frame 2, and a plurality of fastening suction cups 32 are provided on the cabinet door panel 3 for fixing it to the outer wall of the ring network cabinet, thereby further improving the stability and sealing.

[0044] Reference Figure 1 and Figure 7 A first sealing groove 33 is provided on a side of the cabinet door panel 3 facing the cabinet door frame 2 along the circumferential direction, and a second sealing groove 21 is provided on the peripheral wall of the cabinet door frame 2 along the circumferential direction. A first sealing airbag 34 and a second sealing airbag 22 are respectively provided in the first sealing groove 33 and the second sealing groove 21. An inflatable member 35 is respectively provided on the outer wall of the cabinet door panel 3 and the cabinet door frame 2. In this embodiment, the inflatable member 35 adopts an air compressor to inflate the first sealing airbag 34 and the second sealing airbag 22; after the first sealing airbag 34 is inflated, it will be located around the second sealing airbag 22, and an interlocking groove 341 is provided on the end of the first sealing airbag 34 facing the second sealing airbag 22, so that the second sealing airbag 22 can extend out of the second sealing groove 21 and press into it; in this embodiment, a groove body for the synchronization plate 86 to be set is also required to be reserved inside the first sealing airbag 34.

[0045] The implementation principle of the sealing structure of an environmentally friendly gas ring network cabinet in the embodiment of the present application is as follows: the cabinet door panel 3 is rotated so that the magnetic sheet 31 can enter the clearance groove 91. After the magnetic sheet 31 is magnetically attracted to the inner wall of the clearance groove 91, the cabinet door panel 3 is pushed along the direction of the telescopic outer tube 5, so that the folding sealing tube 4 is compressed, and the wavy structure on the sealing gasket 41 inside the folding sealing tube 4 is engaged with the wavy protrusion 42 to achieve sealing; in the process of pushing the cabinet door panel 3, the rotating pin 6 is rotated along the telescopic outer tube 5. The retractable outer tube 5 slides in the length direction so that the locking ring 81 and the second locking rod 83 engage with each other to complete the locking of the cabinet door panel 3 and the cabinet door frame 2. When the locking pin completely enters the retractable outer tube 5, the rotation of the hinge 7 can be restricted; the inflatable component 35 is started to inflate the second sealing airbag 22 and the first sealing airbag 34 in turn to further seal the gap between the cabinet door panel 3 and the cabinet door frame 2. Only after the cabinet door structure 1 is closed can environmentally friendly gas be introduced into the air chamber.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An environmentally friendly gas ring main unit sealing structure, characterized in that: The locket is configured to lock the locket, wherein the locking cam is secured to the locking cam by a spring, and the locking cam is secured to the locking cam by a spring. The cam is secured to the bottom of the tube and is adapted to engage the locking cam of the locking lever, wherein the locking cam is secured to the bottom of the tube and is adapted to engage the locking cam of the locking lever when the cam is in engagement with the locking cam.

2. The sealed structure of an environmentally friendly gas ring main unit according to claim 1, characterized in that: A sealing gasket is provided in the folding sealing tube, and the end of the sealing gasket away from the cabinet door frame is wavy. A wavy protrusion is provided on the inner wall of the folding sealing tube away from the cabinet door frame, and the wavy protrusion is staggered with the wavy structure of the sealing gasket.

3. The sealed structure of an environmentally friendly gas ring main unit according to claim 1, wherein: The unlocking mechanism includes an unlocking push rod, an unlocking rack, an unlocking gear, a transmission shaft and an unlocking cam. An unlocking groove for the insertion and sliding of the unlocking push rod is formed in the outer wall of the telescopic outer tube. An unlocking cavity is formed in the bottom wall of the telescopic outer tube. The unlocking groove communicates with the unlocking cavity. The unlocking rack is arranged at one end of the unlocking push rod located in the unlocking cavity. The unlocking gear is rotatably connected to the inner wall of the unlocking cavity. The unlocking gear meshes with the unlocking rack. The transmission shaft is coaxially arranged with the unlocking gear. The unlocking cam is sleeved on the circumferential wall of the transmission shaft. Two rotating grooves are formed in the bottom wall of the telescopic outer tube. The first locking rod is rotatably connected in the rotating groove. A second return torsion spring is arranged at the rotating connection of the first locking rod and the rotating groove. The second return torsion spring drives the two first locking rods to rotate away from each other. An abutting rod is arranged at the bottom end of the first locking rod. The abutting rod abuts against the outer wall of the unlocking cam.

4. The environmentally friendly gas ring main unit sealing structure according to claim 3, wherein: Synchronizing pieces for connecting the two unlocking push rods are arranged on the end walls of the telescopic outer tube where the two unlocking push rods are located.

5. The sealed structure of an environmentally friendly gas ring main unit according to claim 1, wherein: A sealing ring sleeve is arranged on the circumferential wall of the rotating pin. The sealing ring sleeve abuts against the inner wall of the telescopic outer tube. A wedge-shaped block is arranged on the outer wall of the sealing ring sleeve. A wedge-shaped groove for the insertion and sliding of the wedge-shaped block is formed in the inner wall of the telescopic outer tube along the depth direction.

6. The sealed structure of an environmentally friendly gas ring main unit according to claim 1, characterized in that: The size of the cabinet door panel is larger than that of the cabinet door frame body. A plurality of fastening suction cups are arranged on the part of the cabinet door panel that extends beyond the cabinet door frame body.

7. An environmentally friendly gas ring main unit sealing structure according to claim 6, characterized in that: A first sealing groove is formed in the surface of the cabinet door panel facing the cabinet door frame body along the circumferential direction. A second sealing groove is formed in the circumferential wall of the cabinet door frame body along the circumferential direction. A first sealing airbag and a second sealing airbag are respectively arranged in the first sealing groove and the second sealing groove. An inflating member for filling gas into the first sealing airbag and the second sealing airbag is arranged on the outer wall of the cabinet door panel and the cabinet door frame body.

8. The sealed structure of an environmentally friendly gas ring main unit according to claim 7, characterized in that: After being inflated, the first sealing airbag is located around the second sealing airbag. A fitting groove for the top of the second sealing airbag to abut against is formed in the surface of the first sealing airbag facing the second sealing airbag.

Images