Arc sealing door of middle corridor cooling device

Abstract

The utility model relates to the field of rail transit, aims at solving the problems that in the prior art, a sealing door is poor in sealing performance, rainwater is prone to leaking into a cooling chamber, electrical equipment is large in operation hidden danger, and flow channel resistance is large, and provides an arc sealing door of a middle corridor cooling device. The door frame is provided with a door opening, an annular connecting piece is arranged on the inner side wall of the door opening, and the outer edge of the annular connecting piece is perpendicularly and fixedly connected to the inner side wall of the door opening. A door plate is arranged on the outer side of the door opening and connected to the annular connecting piece through bolts, and a plurality of sealing rubber strips are tightly clamped between the door plate and the annular connecting piece. The beneficial effects of the utility model are that the rainproof effect is good, rainwater is not easy to leak into the cooling chamber, the operation of electrical equipment is safe, and the air resistance of the flow channel is reduced.

Description

Technical Field

[0001] The utility model relates to the field of rail transit, and more specifically, to an arc sealing door of an intermediate corridor cooling device. Background Art

[0002] Currently, the existing sealing doors of diesel locomotives are all rainproof structures on the outside, while the sealing door of the intermediate corridor cooling device requires rainproof on the inside. The existing sealing door structure of diesel locomotives will cause a large amount of rainwater to accumulate inside the sealing door, resulting in rainwater leakage into the cooling chamber, posing a potential safety hazard to the safe operation of other electrical equipment below the cooling device; at the same time, due to the complex structure inside the existing sealing door and the relatively complex air flow channel inside the sealing door, the flow channel resistance is relatively large. Summary of the Utility Model

[0003] The utility model aims to provide an arc sealing door of an intermediate corridor cooling device to solve the problems of poor sealing performance of the sealing door, easy leakage of rainwater into the cooling chamber, large potential safety hazards in the operation of electrical equipment, and relatively large flow channel resistance in the prior art.

[0004] The embodiments of the utility model are implemented as follows:

[0005] The embodiment of the utility model provides an arc sealing door of an intermediate corridor cooling device, which includes a door frame;

[0006] The above-mentioned door frame has a door opening, and an annular connecting piece is provided on the inner side wall of the above-mentioned door opening. The outer edge of the above-mentioned annular connecting piece is vertically fixedly connected to the inner side wall of the above-mentioned door opening;

[0007] A door panel is provided outside the above-mentioned door opening. The above-mentioned door panel is bolted to the above-mentioned annular connecting piece, and a plurality of sealing rubber strips are tightly clamped between the above-mentioned door panel and the above-mentioned annular connecting piece.

[0008] During installation, first, install the above-mentioned annular connecting piece inside the above-mentioned door opening of the above-mentioned door frame, then arrange a plurality of the above-mentioned sealing rubber strips annularly between the above-mentioned annular connecting piece and the above-mentioned door panel, and bolt the above-mentioned door panel to the above-mentioned annular connecting piece by using bolts. By mutually extruding a plurality of the above-mentioned sealing rubber strips through the above-mentioned door panel and the above-mentioned annular connecting piece, the sealing door realizes sealing.

[0009] An arc sealing door of an intermediate corridor cooling device disclosed in this embodiment ensures the smoothness of the air flow path inside the cooling device by fixing the above-mentioned door panel to the above-mentioned annular connecting piece with bolts, reduces the air resistance of the flow path, is beneficial to the exertion of the cooling performance of the cooling device. By arranging a plurality of sealing rubber strips, it is beneficial to the effective sealing of the above-mentioned door panel under negative pressure conditions, the drainage inside is smooth, rainwater will not accumulate, and the rainproof effect is better. Furthermore, an arc sealing door of an intermediate corridor cooling device has beneficial effects of better rainproof effect, difficult leakage of rainwater into the cooling chamber, safe operation of electrical equipment, and reduced air resistance of the flow path.

[0010] Optionally: A plurality of first through holes are provided on the circumference of the above-mentioned annular connecting piece, and a plurality of the above-mentioned first through holes are evenly distributed on the above-mentioned annular connecting piece. A plurality of second through holes are provided on the circumference of the above-mentioned door panel, and a plurality of the above-mentioned second through holes are evenly distributed on the above-mentioned door panel. A plurality of the above-mentioned first through holes correspond to a plurality of the above-mentioned second through holes.

[0011] With such a setting, the arrangement of a plurality of the above-mentioned first through holes and a plurality of the above-mentioned second through holes is beneficial to the detachable connection of the above-mentioned door panel to the above-mentioned annular connecting piece, which is convenient for disassembly and assembly and convenient for the later maintenance and repair of internal equipment.

[0012] Optionally: A screw sleeve is riveted on the circumference of each of the above-mentioned first through holes. One end of the screw sleeve penetrates through the above-mentioned first through hole, and the other end of the screw sleeve abuts against one end of the above-mentioned first through hole close to the above-mentioned door panel.

[0013] With such a setting, the screw sleeve is riveted to the above-mentioned annular connecting piece through a plurality of the above-mentioned first through holes, which is beneficial to the detachable connection of the above-mentioned door panel to the above-mentioned annular connecting piece, with quick disassembly and assembly and convenient for the maintenance and repair of internal equipment.

[0014] Optionally: A plurality of screw rods are provided on the side of the above-mentioned door panel away from the above-mentioned annular connecting piece. One end of each of the above-mentioned screw rods away from the above-mentioned door panel has a nut. One end of each of the above-mentioned screw rods close to the above-mentioned door panel respectively penetrates through a plurality of the above-mentioned second through holes and is threadedly connected to the screw sleeve.

[0015] With such a setting, the installation of the sealing door is realized by connecting the screw sleeve with the above-mentioned screw rod, and the nut not only facilitates the control of the rotation of the above-mentioned screw rod but also limits the depth of the screw rod screwed in, playing a role of limiting.

[0016] Optionally: A gasket is provided between the above-mentioned door panel and the above-mentioned nut. The gasket is sleeved on the above-mentioned screw rod. One side of the gasket is in close contact with the nut, and the other side of the gasket is in close contact with the above-mentioned door panel.

[0017] With such a setting, the gasket can effectively protect the above-mentioned door panel from being worn and extends the service life of the above-mentioned door panel.

[0018] Optionally: Some of the above-mentioned sealant strips have a first annular seal strip and a second annular seal strip. The first annular seal strip is clamped on the inner ring edge of the annular connector and abuts against the door panel, and the second annular seal strip is clamped on the outer edge of the door panel and abuts against the annular connector.

[0019] With such an arrangement, using the above-mentioned first annular seal strip and the second annular seal strip can greatly reduce the number of press-fit bolts and the workload of disassembling and assembling the door panel. At the same time, the sunken space of the door panel is greatly reduced, and a good rain-proof function on both the inner and outer sides of the sealed door can be achieved. After the arc-shaped sealed door is assembled, the air flow path inside the cooling device is ensured to be unobstructed, the air resistance of the flow path is reduced, which is beneficial to the cooling performance of the cooling device.

[0020] Optionally: The above-mentioned first annular seal strip has a first clamping opening and a first elastic tube arranged in a stacked manner, and the first clamping opening and the first elastic tube are integrally formed;

[0021] The inside of the first clamping opening is provided with a first anti-slip strip, the first anti-slip strip is inclined towards the inside of the first clamping opening, the first anti-slip strip extends and closes along the loop line of the first annular seal strip, the first elastic tube has a first compression cavity, the first elastic tube extends and closes along the loop line of the first annular seal strip, the first clamping opening is clamped on the inner ring edge of the annular connector, and the side of the first elastic tube away from the first clamping opening abuts against the door panel.

[0022] With such an arrangement, the above-mentioned first annular seal strip is clamped on the inner ring edge of the annular connector through the first clamping opening. The first anti-slip strip can prevent the first annular seal strip from detaching from the inner ring edge of the annular connector. The first compression cavity of the first elastic tube enables the first elastic tube to have an elastic deformation amount, which is beneficial to the first elastic tube elastically abutting against the door panel, thereby improving the sealing performance between the inner ring edge of the annular connector and the inner side of the door panel.

[0023] Optionally: The above-mentioned second annular seal strip has a second clamping opening and a second elastic tube arranged in a stacked manner, and the second clamping opening and the second elastic tube are integrally formed;

[0024] The inside of the second clamping opening is provided with a second anti-slip strip, the second anti-slip strip is inclined towards the inside of the second clamping opening, the second anti-slip strip extends and closes along the loop line of the second annular seal strip, the second elastic tube has a second compression cavity, the second elastic tube extends and closes along the loop line of the second annular seal strip, the second clamping opening is clamped on the outer edge of the door panel, and the side of the second elastic tube away from the second clamping opening abuts against the annular connector.

[0025] With such a setting, the above-mentioned second annular sealing strip is clamped on the outer edge of the above-mentioned door panel through the above-mentioned second clamping opening. The above-mentioned second anti-slip strip can prevent the above-mentioned second annular sealing strip from detaching from the outer edge of the above-mentioned door panel. The second compression cavity of the above-mentioned second elastic tube enables the above-mentioned second elastic tube to have an elastic deformation amount, which is beneficial for the above-mentioned second elastic tube to elastically abut against the above-mentioned annular connecting piece, thereby improving the sealing performance between the outer side surface of the above-mentioned annular connecting piece and the outer edge of the above-mentioned door panel.

[0026] Optionally: The above-mentioned door frame is formed by bending a thin-walled rectangular steel pipe.

[0027] With such a setting, using a thin-walled rectangular steel pipe to make the above-mentioned door frame reduces the weight and welding workload while ensuring the strength, and avoids welding deformation.

[0028] Optionally: The above-mentioned door frame has a first arc tube and a second arc tube. The above-mentioned first arc tube and the above-mentioned second arc tube are parallel to each other and arranged at intervals. The same ends of the above-mentioned first arc tube and the above-mentioned second arc tube are fixedly connected with a first structural beam. The other ends of the above-mentioned first arc tube and the above-mentioned second arc tube are fixedly connected with a second structural beam. A third structural beam is provided between the above-mentioned first structural beam and the above-mentioned second structural beam. The two ends of the above-mentioned third structural beam are respectively perpendicularly and fixedly connected to the inner sides of the above-mentioned first arc tube and the above-mentioned second arc tube. The above-mentioned door opening is located between the above-mentioned third structural beam and the above-mentioned second structural beam.

[0029] With such a setting, such a setting enables the above-mentioned door frame to be welded to the relevant air duct by abutting alone, and the assembly process is of low difficulty. At the same time, the above-mentioned first arc tube, the above-mentioned second arc tube, the above-mentioned first structural beam, the above-mentioned second structural beam, and the above-mentioned third structural beam of the above-mentioned door frame can be used as the structural support beams of the relevant air duct, so as to improve the structural strength of the relevant air duct, realizing the installation of the sealing door and reducing the weight of the relevant air duct.

[0030] Based on the above description, an arc sealing door of an intermediate corridor cooling device disclosed by the present invention has the beneficial effects of better rainproof effect, difficult leakage of rainwater into the cooling chamber, safe operation of electrical equipment, and reduced air resistance of the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0032] Figure 1Schematic diagram of the first explosion structure of the arc sealing door of an intermediate corridor cooling device in an embodiment of the present utility model;

[0033] Figure 2 Schematic diagram of the second explosion structure of the arc sealing door of an intermediate corridor cooling device in an embodiment of the present utility model;

[0034] Figure 3 Side view of the arc sealing door of an intermediate corridor cooling device in an embodiment of the present utility model;

[0035] Figure 4 In an embodiment of the present utility model Figure 3 Enlarged schematic diagram at position A.

[0036] Reference numerals: 1 - door frame, 2 - door opening, 3 - annular connecting member, 4 - door panel, 5 - sealing strip, 6 - first through hole, 7 - second through hole, 8 - screw sleeve, 9 - screw rod, 10 - nut, 11 - gasket, 12 - first annular sealing strip, 13 - second annular sealing strip, 14 - first clamping port, 15 - first elastic tube, 16 - first anti-slip strip, 17 - first compression chamber, 18 - second clamping port, 19 - second elastic tube, 20 - second anti-slip strip, 21 - second compression chamber, 22 - first arc tube, 23 - second arc tube, 24 - first structural beam, 25 - second structural beam, 26 - third structural beam. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model that is claimed, but is merely representative of selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0039] Embodiment

[0040] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , this embodiment provides an arc sealing door for an intermediate corridor cooling device, including a door frame 1;

[0041] The door frame 1 has a door opening 2, and an annular connecting member 3 is provided on the inner side wall of the door opening 2. The outer edge of the annular connecting member 3 is vertically fixedly connected to the inner side wall of the door opening 2;

[0042] A door panel 4 is provided outside the door opening 2. The door panel 4 is bolted to the annular connecting member 3, and a plurality of sealing rubber strips 5 are tightly clamped between the door panel 4 and the annular connecting member 3.

[0043] During installation, first, install the annular connecting member 3 on the inner side of the door opening 2 of the door frame 1, then arrange a plurality of sealing rubber strips 5 annularly between the annular connecting member 3 and the door panel 4, and bolt the door panel 4 to the annular connecting member 3 by using bolts. By squeezing a plurality of sealing rubber strips 5 between the door panel 4 and the annular connecting member 3, the sealing door is sealed.

[0044] For the arc sealing door of an intermediate corridor cooling device disclosed in this embodiment, since the door panel 4 is fixed to the annular connecting member 3 by bolts, the air flow passage inside the cooling device is ensured to be unobstructed, the air resistance of the flow passage is reduced, which is beneficial to the cooling performance of the cooling device. By arranging a plurality of sealing rubber strips 5, it is beneficial to the effective sealing of the door panel 4 under negative pressure conditions, the drainage inside is unobstructed, rainwater will not accumulate, and the rainproof effect is better. Furthermore, the arc sealing door of an intermediate corridor cooling device has the beneficial effects of better rainproof effect, rainwater is not easily leaked into the cooling chamber, the operation of electrical equipment is safe, and the air resistance of the flow passage is reduced.

[0045] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 On the circumferential direction of the annular connecting member 3, a plurality of first through holes 6 are opened. The plurality of first through holes 6 are evenly distributed on the annular connecting member 3. On the circumferential direction of the door panel 4, a plurality of second through holes 7 are provided. The plurality of second through holes 7 are evenly distributed on the door panel 4. The plurality of first through holes 6 and the plurality of second through holes 7 correspond to each other. The arrangement of the plurality of first through holes 6 and the plurality of second through holes 7 is beneficial to the detachable connection of the door panel 4 to the annular connecting member 3, which is convenient for disassembly and assembly and convenient for the later maintenance and repair of internal equipment.

[0046] On the circumferential direction of each of the plurality of first through holes 6, a screw sleeve 8 is riveted. One end of the screw sleeve 8 passes through the first through hole 6, and the other end of the screw sleeve 8 abuts against one end of the first through hole 6 close to the door panel 4. The screw sleeve 8 is riveted to the annular connecting member 3 through the plurality of first through holes 6, which is beneficial to the detachable connection of the door panel 4 to the annular connecting member 3, with quick disassembly and assembly and convenient for the maintenance and repair of internal equipment.

[0047] A plurality of screw rods 9 are provided on the side of the door panel 4 away from the annular connecting member 3, and a nut 10 is provided on the end of the plurality of screw rods 9 away from the door panel 4. The ends of the plurality of screw rods 9 close to the door panel 4 respectively pass through a plurality of second through holes 7 and are threadedly connected in the threaded sleeves 8. The installation of the sealed door is achieved by connecting the threaded sleeves 8 with the screw rods 9, and the nut 10 not only facilitates the control of the rotation of the screw rod 9, but also limits the depth of the screw rod 9 being screwed in, thus having a limiting function.

[0048] A gasket 11 is provided between the door panel 4 and the nut 10. The gasket 11 is sleeved on the screw 9. One side of the gasket 11 is tightly attached to the nut 10, and the other side of the gasket 11 is tightly attached to the door panel 4. The gasket 11 can effectively protect the door panel 4 from wear and tear, thereby extending the service life of the door panel 4.

[0049] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , several sealing strips 5 include a first annular sealing strip 12 and a second annular sealing strip 13. The first annular sealing strip 12 is clamped at the inner ring edge of the annular connector 3 and abuts against the door panel 4. The second annular sealing strip 13 is clamped at the outer edge of the door panel 4 and abuts against the annular connector 3. The use of the first annular sealing strip 12 and the second annular sealing strip 13 can greatly reduce the number of press-fit bolts and the workload of disassembling and assembling the door panel 4. At the same time, the recessed space of the door panel 4 is greatly reduced, and the good rainproof function inside and outside the sealed door can be well realized. After the arc sealing door is assembled, the unobstructed air flow channel inside the cooling device is guaranteed, the air resistance of the flow channel is reduced, and it is beneficial to the cooling performance of the cooling device.

[0050] The first annular sealing strip 12 has a first clamping opening 14 and a first elastic tube 15 which are arranged in a stacked manner. The first clamping opening 14 and the first elastic tube 15 are integrally formed. A first anti-slip strip 16 is arranged inside the first clamping opening 14. The first anti-slip strip 16 is arranged obliquely toward the inside of the first clamping opening 14. The first anti-slip strip 16 extends and closes along the loop line of the first annular sealing strip 12. The first elastic tube 15 has a first compression chamber 17. The first elastic tube 15 extends and closes along the loop line of the first annular sealing strip 12. The first clamping opening 14 is clamped on the annular connector 3. On the inner ring edge, the side of the first elastic tube 15 away from the first clamping opening 14 is pressed against the door panel 4, the first annular sealing strip 12 is clamped on the inner ring edge of the annular connector 3 through the first clamping opening 14, the first anti-slip strip 16 can prevent the first annular sealing strip 12 from detaching from the inner ring edge of the annular connector 3, and the first compression chamber 17 of the first elastic tube 15 makes the first elastic tube 15 have an elastic deformation amount, which is beneficial for the first elastic tube 15 to elastically press against the door panel 4, thereby improving the sealing between the inner ring edge of the annular connector 3 and the inner side of the door panel 4.

[0051] The second annular sealing strip 13 has a second clamping opening 18 and a second elastic tube 19 which are arranged in a stacked manner. The second clamping opening 18 and the second elastic tube 19 are integrally formed. Inside the second clamping opening 18, there is a second anti-slip strip 20 which is arranged obliquely towards the inside of the second clamping opening 18. The second anti-slip strip 20 extends and closes along the loop of the second annular sealing strip 13. The second elastic tube 19 has a second compression cavity 21 and extends and closes along the loop of the second annular sealing strip 13. The second clamping opening 18 clamps on the outer edge of the door panel 4, and one side of the second elastic tube 19 away from the second clamping opening 18 abuts against the annular connecting piece 3. The second annular sealing strip 13 is clamped on the outer edge of the door panel 4 through the second clamping opening 18. The second anti-slip strip 20 can prevent the second annular sealing strip 13 from detaching from the outer edge of the door panel 4. The second compression cavity 21 of the second elastic tube 19 enables the second elastic tube 19 to have an elastic deformation amount, which is beneficial for the second elastic tube 19 to elastically abut against the annular connecting piece 3, thereby improving the sealing performance between the outer side of the annular connecting piece 3 and the outer edge of the door panel 4.

[0052] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , the door frame 1 is formed by bending a thin-walled rectangular steel pipe. Using a thin-walled rectangular steel pipe to make the door frame 1 reduces the weight and welding workload while ensuring the strength, and avoids welding deformation.

[0053] The door frame 1 has a first arc tube 22 and a second arc tube 23. The first arc tube 22 and the second arc tube 23 are parallel and arranged at intervals. At the same end of the first arc tube 22 and the second arc tube 23, there is a first structural beam 24 fixedly connected. At the other end of the first arc tube 22 and the second arc tube 23, there is a second structural beam 25 fixedly connected. Between the first structural beam 24 and the second structural beam 25, there is a third structural beam 26. The two ends of the third structural beam 26 are respectively vertically and fixedly connected to the inner sides of the first arc tube 22 and the second arc tube 23. The door opening 2 is located between the third structural beam 26 and the second structural beam 25. Such a setting enables the door frame 1 to be separately welded to the relevant air duct in a butting manner, with a low assembly process difficulty. At the same time, the first arc tube 22, the second arc tube 23, the first structural beam 24, the second structural beam 25 and the third structural beam 26 of the door frame 1 can be used as the structural support beams of the relevant air duct, so as to improve the structural strength of the relevant air duct, realizing the installation of the sealing door and reducing the weight of the relevant air duct.

[0054] See Figure 1 , Figure 2 , Figure 3 and Figure 4, in this embodiment, the sealed door adopts a "well"-shaped arc design structure, which can not only be modularly designed and produced itself, but also the door frame 1 of the arc sealed door can be used as a part of the structural support beam of the cooling device, with a good weight reduction effect.

[0055] In this embodiment, the door frame 1 adopts a welding method parallel and close to the air duct, and the assembly is simple.

[0056] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , in this embodiment, the door panel 4 adopts a light material and a bolt pressing method, which is quick to disassemble and assemble, and is convenient for the maintenance and repair of internal equipment.

[0057] In this embodiment, the double sealed door realizes modular, standardized and batch production under the vehicle, and the quality has good control and guarantee.

[0058] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , the specific installation steps of the arc sealed door of an intermediate corridor cooling device in this embodiment: First, the door frame 1 is separately connected to the relevant air duct by a close welding method to form an integral body. The first arc pipe 22, the second arc pipe 23, the first structural beam 24, the second structural beam 25 and the third structural beam 26 of the door frame 1 can be used as the structural support beam of the relevant air duct to improve the structural strength of the relevant air duct and reduce the weight of the relevant air duct. Secondly, a door opening 2 is opened at the corresponding position of the door frame 1, the annular connecting piece 3 is installed inside the door opening 2 of the door frame 1, and then several first screw rods 9 are threadedly connected into the screw sleeve 8, so that the door panel 4 is bolted to the annular connecting piece 3. The sealing adopts the first annular sealing strip 12 and the second annular sealing strip 13 arranged between the annular connecting piece 3 and the door panel 4. In this way, the structure is simple, the sealing is effective, the number of pressing bolts can be greatly reduced, the disassembly and assembly workload of the door panel 4 can be reduced, and at the same time, the good rainproof function on both the inside and outside of the sealed door can be well realized. After the arc sealed door is assembled, the air flow channel inside the air duct is relatively smooth and the flow channel resistance is small.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An arc sealing door for an intermediate corridor cooling device, characterized in that: It includes a door frame (1); The door frame (1) has a door opening (2), and an annular connecting member (3) is provided on the inner side wall of the door opening (2). The outer edge of the annular connecting member (3) is vertically fixedly connected to the inner side wall of the door opening (2); A door panel (4) is provided outside the door opening (2). The door panel (4) is bolted to the annular connecting member (3), and a plurality of sealing rubber strips (5) are tightly clamped between the door panel (4) and the annular connecting member (3).

2. The arc sealing door for an intermediate corridor cooling device according to claim 1, characterized in that: A plurality of first through holes (6) are formed in the circumferential direction of the annular connecting member (3). The plurality of first through holes (6) are evenly distributed on the annular connecting member (3). A plurality of second through holes (7) are provided on the circumferential direction of the door panel (4). The plurality of second through holes (7) are evenly distributed on the door panel (4). The plurality of first through holes (6) correspond to the plurality of second through holes (7).

3. The arc sealing door for an intermediate corridor cooling device according to claim 2, characterized in that: A screw sleeve (8) is riveted on the circumferential direction of each of the plurality of first through holes (6). One end of the screw sleeve (8) penetrates through the first through hole (6), and the other end of the screw sleeve (8) abuts against one end of the first through hole (6) close to the door panel (4).

4. The arc sealing door for an intermediate corridor cooling device according to claim 3, characterized in that: A plurality of screw rods (9) are provided on the side of the door panel (4) away from the annular connecting member (3). One end of each of the plurality of screw rods (9) away from the door panel (4) has a nut (10). One end of each of the plurality of screw rods (9) close to the door panel (4) respectively penetrates through the plurality of second through holes (7) and is threadedly connected to the screw sleeve (8).

5. The arc sealing door for an intermediate corridor cooling device according to claim 4, characterized in that: A gasket (11) is provided between the door panel (4) and the nut (10). The gasket (11) is sleeved on the screw rod (9). One side of the gasket (11) is closely attached to the nut (10), and the other side of the gasket (11) is closely attached to the door panel (4).

6. The arc sealing door for an intermediate corridor cooling device according to claim 1, characterized in that: The plurality of sealing rubber strips (5) have a first annular sealing strip (12) and a second annular sealing strip (13). The first annular sealing strip (12) is clamped on the inner ring edge of the annular connecting member (3) and abuts against the door panel (4). The second annular sealing strip (13) is clamped on the outer edge of the door panel (4) and abuts against the annular connecting member (3).

7. The arc sealing door for an intermediate corridor cooling device according to claim 6, characterized in that: The first annular sealing strip (12) has a first clamping opening (14) and a first elastic tube (15) which are arranged in a stacked manner, and the first clamping opening (14) and the first elastic tube (15) are integrally formed; The inside of the first clamping opening (14) is provided with a first anti-slip strip (16), the first anti-slip strip (16) is arranged obliquely towards the inside of the first clamping opening (14), the first anti-slip strip (16) extends and closes along the loop of the first annular sealing strip (12), the first elastic tube (15) has a first compression cavity (17), the first elastic tube (15) extends and closes along the loop of the first annular sealing strip (12), the first clamping opening (14) is clamped on the inner ring edge of the annular connecting piece (3), and one side of the first elastic tube (15) away from the first clamping opening (14) abuts against the door panel (4).

8. The arc sealing door of the intermediate corridor cooling device according to claim 6, characterized in that: The second annular sealing strip (13) has a second clamping opening (18) and a second elastic tube (19) which are arranged in a stacked manner, and the second clamping opening (18) and the second elastic tube (19) are integrally formed; The inside of the second clamping opening (18) is provided with a second anti-slip strip (20), the second anti-slip strip (20) is arranged obliquely towards the inside of the second clamping opening (18), the second anti-slip strip (20) extends and closes along the loop of the second annular sealing strip (13), the second elastic tube (19) has a second compression cavity (21), the second elastic tube (19) extends and closes along the loop of the second annular sealing strip (13), the second clamping opening (18) is clamped on the outer edge of the door panel (4), and one side of the second elastic tube (19) away from the second clamping opening (18) abuts against the annular connecting piece (3).

9. The arc sealing door of the intermediate corridor cooling device according to claim 1, characterized in that: The door frame (1) is formed by bending a rectangular steel pipe.

10. The arc sealing door of the intermediate corridor cooling device according to claim 9, characterized in that: The door frame (1) has a first arc-shaped tube (22) and a second arc-shaped tube (23), the first arc-shaped tube (22) and the second arc-shaped tube (23) are parallel to each other and arranged at intervals, the same ends of the first arc-shaped tube (22) and the second arc-shaped tube (23) are fixedly connected with a first structural beam (24), the other ends of the first arc-shaped tube (22) and the second arc-shaped tube (23) are fixedly connected with a second structural beam (25), a third structural beam (26) is arranged between the first structural beam (24) and the second structural beam (25), both ends of the third structural beam (26) are vertically and fixedly connected to the inner sides of the first arc-shaped tube (22) and the second arc-shaped tube (23), and the door opening (2) is located between the third structural beam (26) and the second structural beam (25).

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