CN112272490A - Outdoor intelligent terminal box - Google Patents
Outdoor intelligent terminal box Download PDFInfo
- Publication number
- CN112272490A CN112272490A CN202011069583.5A CN202011069583A CN112272490A CN 112272490 A CN112272490 A CN 112272490A CN 202011069583 A CN202011069583 A CN 202011069583A CN 112272490 A CN112272490 A CN 112272490A
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- China
- Prior art keywords
- intelligent terminal
- cooling unit
- rack
- gas
- control switch
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/207—Thermal management, e.g. cabinet temperature control
Abstract
The invention relates to the field of intelligent terminal boxes, and discloses an outdoor intelligent terminal box which comprises a box body, a main cooling unit, an auxiliary cooling unit, a gas tank, a control switch and a driving assembly, wherein intelligent terminal equipment is installed in the box body; the auxiliary cooling unit can be started when the main cooling unit fails so as to cool the intelligent terminal equipment in the box body; when the main cooling unit breaks down, the temperature in the box continues to rise, and the gas in the gas pitcher takes place expend with heat and contract with cold according to the change of temperature in the box, and the gas in the gas pitcher is heated the inflation, makes the atmospheric pressure in the gaseous intracavity increase to promote the second pipe fitting and remove for first pipe fitting, thereby make the control switch action in order to open vice cooling unit, make the intelligent terminal case be in under the suitable temperature environment always, guarantee that the intelligent terminal case can normally work.
Description
Technical Field
The invention relates to the field of intelligent terminal boxes, in particular to an outdoor intelligent terminal box.
Background
With the continuous development of science and technology and the improvement of the service requirements and the technology of the transformer substation, the integration of primary equipment and secondary equipment of the transformer substation is promoted, the functions are developed towards intellectualization, and the change of the configuration and the installation of intelligent terminal equipment is generated, so that the original indoor open type placement is transited to the outdoor closed type placement.
For the closed intelligent terminal, usually, a cabinet is covered outside the intelligent terminal for protection, the normal operation of the intelligent terminal needs proper temperature, under the outdoor non-shielding condition, the temperature inside the cabinet possibly exceeds the allowable range of the equipment due to the heat effect of sunlight radiation and equipment dissipation, the reduction of the performance of element devices can be caused due to overhigh temperature, the fault communication of the protection measurement and control device is interrupted, the equipment is damaged, the stability of the whole system is influenced, and therefore the air conditioner is generally arranged inside the cabinet to cool the cabinet.
However, the current outdoor intelligent terminal box body is only provided with an air conditioner, and the temperature in the box body is lost after the outdoor intelligent terminal box body breaks down.
Disclosure of Invention
The invention aims to provide an outdoor intelligent terminal type, which can enable an intelligent terminal to be always in an appropriate temperature environment and ensure that the intelligent terminal can normally work.
In order to achieve the purpose, the invention adopts the following technical scheme:
an outdoor smart terminal box comprising:
the intelligent terminal equipment is arranged in the box body;
the intelligent terminal device comprises a main cooling unit and an auxiliary cooling unit, wherein the auxiliary cooling unit can be started when the main cooling unit fails so as to cool the intelligent terminal device in the box body;
a gas tank containing gas therein;
the driving assembly comprises a first pipe fitting and a second pipe fitting, one end of the first pipe fitting is closed, the other end of the first pipe fitting and one end of the second pipe fitting are sleeved to form a closed gas cavity in an enclosing mode, and the gas tank is communicated with the gas cavity;
and the gas in the gas tank can expand with heat and contract with cold according to the temperature change in the box body, so that the second pipe fitting can axially move relative to the first pipe fitting to drive the control switch to open and close the auxiliary cooling unit.
Preferably, the control switch is arranged on one side of the driving component;
the drive assembly further includes:
the contact block is arranged right opposite to the control switch;
and the second pipe fitting is connected to the contact block through the linkage unit, so that the contact block is in pressure connection with the control switch to turn on the auxiliary cooling unit, or the contact block is separated from the control switch to turn off the auxiliary cooling unit.
Preferably, the linkage unit includes:
one end of the first rack is connected with one end of the second pipe fitting;
the first rack can drive the second rack to move through the gear transmission assembly so as to drive the contact block to act.
Preferably, the control switch is located on a side of the second rack opposite to the first rack, and the linkage unit further includes:
the movable rod is connected to one side, back to the first rack, of the second rack, and the contact block is connected to the movable rod.
Preferably, the gear transmission assembly comprises a rotating shaft which is rotatably connected to the box body, and a first gear and a second gear which are fixedly arranged on the rotating shaft;
the first gear is engaged with the first rack, and the second gear is engaged with the second rack.
Preferably, the method is characterized in that,
the gas tank comprises a tank body and a piston arranged in the tank body, and a sealing cavity communicated with the gas cavity is formed between the piston and the tank body;
the piston can slide relative to the inner wall of the tank body, so that the volume of the sealed cavity is changed, and the temperature for opening the control switch is adjusted.
Preferably, the method further comprises the following steps:
the bottom of gas pitcher is followed to the one end of regulating part stretches into in the gas pitcher to rotate and connect in the piston, the regulating part with the diapire threaded connection of gas pitcher.
Preferably, a graduated scale is arranged on the inner wall of the box body and used for measuring the moving distance of the piston or the second pipe fitting so as to control the starting temperature of the control switch.
Preferably, the box body is internally provided with a sound wave driver for driving animals in the box body.
Preferably, the sound wave driver is detachably connected with the inner wall of the box body.
The invention has the beneficial effects that: when the main cooling unit breaks down, the temperature in the box lasts and rises, and the gas in the gas pitcher takes place expend with heat and contract with cold according to the change of temperature in the box, and the gas in the gas pitcher is heated and expands, because gas chamber and gas pitcher intercommunication, the atmospheric pressure that gas expansion made in the gas chamber increases to promote the second pipe fitting and remove for first pipe fitting, thereby make the control switch action in order to open vice cooling unit, greatly reduced the damage probability of equipment in the box.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an outdoor intelligent terminal box according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a driving assembly provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a linkage unit provided in an embodiment of the present invention;
fig. 4 is a schematic structural view of a gas tank provided by an embodiment of the present invention;
fig. 5 is an enlarged schematic view at a in fig. 1.
In the figure:
1. a box body; 2. a main cooling unit; 3. a sub-cooling unit;
4. a gas tank; 41. a tank body; 42. a piston; 43. an adjustment member;
5. a control switch;
6. a drive assembly; 61. a first pipe member; 62. a second pipe member; 63. a contact block; 64. a linkage unit; 641. a first rack; 642. a second rack; 643. a movable rod; 644. a gear drive assembly; 6441. a rotating shaft; 6442. a first gear; 6443. a second gear; 645. a connecting rod; 646. a guide bar; 647. a guide sleeve;
7. a graduated scale; 8. an acoustic driver; 9. a pointer; 10. a slide rail; 11. a pin; 12. and (4) a slide bar.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
As shown in fig. 1 and fig. 2, the present embodiment provides an outdoor intelligent terminal box, which includes a box body 1, a main cooling unit 2, an auxiliary cooling unit 3, a gas tank 4, a control switch 5 and a driving assembly 6, wherein an intelligent terminal device is installed in the box body 1; the auxiliary cooling unit 3 can be started when the main cooling unit 2 fails so as to cool the intelligent terminal equipment in the box body 1; the main cooling unit 2 and the sub cooling unit 3 are connected to the inside of the case 1 by wires. The gas tank 4 is filled with gas, and the gas in the gas tank 4 can expand with heat and contract with cold according to the temperature change in the box body 1, so that the driving assembly 6 drives the control switch 5 to act to open and close the auxiliary cooling unit 3. In the present embodiment, the main cooling unit 2 and the sub-cooling unit 3 are both air conditioners.
When the main cooling unit 2 breaks down, the temperature in the box body 1 continuously rises, and the gas in the gas tank 4 expands with heat and contracts with cold according to the temperature change in the box body 1, so that the driving assembly 6 drives the control switch 5 to move so as to open and close the auxiliary cooling unit 3, and the damage probability of the equipment in the box body 1 is greatly reduced.
Further, as shown in fig. 2, the driving assembly 6 includes a first pipe 61 and a second pipe 62, one end of the first pipe 61 is closed, the other end of the first pipe and one end of the second pipe 62 are sleeved to form a closed gas cavity, the gas tank 4 is communicated with the gas cavity, and the second pipe 62 can move axially relative to the first pipe 61 to actuate the control switch 5. In this embodiment, one end of the first pipe 61, which is far away from the second pipe 62, is connected to the gas tank 4 through a connection pipe, so that the gas tank 4 is communicated with the gas chamber.
When the temperature in the box body 1 continuously rises, the gas in the gas tank 4 is heated and expanded, and the gas cavity is communicated with the gas tank 4, so that the gas expansion increases the gas pressure in the gas cavity, the second pipe 62 is pushed to move relative to the first pipe 61, and the control switch 5 is actuated to start the auxiliary cooling unit 3.
Further, as shown in fig. 2 to 3, the control switch 5 is disposed at one side of the driving assembly 6, and in order to enable the control switch 5 to operate when the driving assembly 6 operates, the outdoor intelligent terminal box further includes a contact block 63 and a linkage unit 64, wherein the contact block 63 is disposed opposite to the control switch 5, and when the second pipe 62 moves, the linkage unit 64 can drive the contact block 63 to move, so that the contact block 63 is pressed against the control switch 5 to turn on the sub-cooling unit 3, or the contact block 63 is separated from the control switch 5 to turn off the sub-cooling unit 3.
Further, as shown in fig. 3, the linkage unit 64 includes a first rack 641 and a second rack 642, and one end of the first rack 641 is connected to one end of the second pipe 62; the second rack 642 can move relative to the box 1, and the first rack 641 can move the second rack 642 through the gear assembly 644 to move the contact block 63.
Further, the control switch 5 is located on a side of the second rack 642 opposite to the first rack 641, the linkage unit 64 further includes a movable rod 643, the movable rod 643 is connected to a side of the second rack 642 opposite to the first rack 641, and the contact block 63 is connected to the movable rod 643. Specifically, the upper and lower ends of the movable rod 643 are connected to the upper and lower ends of the second rack 642 by a connecting block 645. By providing the movable rod 643, the second rack 642 is facilitated to press or release the contact block 63 through the movable rod 643.
The gear transmission assembly 644 includes a rotating shaft 6441 rotatably connected to the case 1, and a first gear 6442 and a second gear 6443 fixedly disposed on the rotating shaft 6441; the first gear 6442 is engaged with the first rack 641, and the second gear 6443 is engaged with the second rack 642.
When the second pipe 62 is lifted, the first rack 641 drives the first gear 6442 to rotate, the first gear 6442 drives the rotating shaft 6441 to rotate synchronously, the rotating shaft 6441 drives the second gear 6443 to rotate, the second gear 6443 drives the movable rod 643 to descend through the second rack 642, and the contact block 63 presses the control switch 5 to start the secondary cooling unit 3. On the contrary, when the second pipe 62 contracts, the first gear 6442 and the second gear 6443 rotate, the movable rod 643 is forced to rise, so that the contact block 63 is separated from the control switch 5, and the purpose of closing the secondary cooling unit 3 is achieved.
As shown in fig. 2 to 3, in this embodiment, the linkage unit further includes a guide rod 646 and a guide sleeve 647, wherein the upper and lower ends of the guide rod 646 are connected to the side of the movable rod 643 opposite to the second rack 642 through a connecting rod 645, the guide rod 646 slidably penetrates through the guide sleeve 647, and the guide sleeve 647 is connected to the inner wall of the box body 1. The sliding fit between the guide rod 646 and the guide sleeve 647 guides the movement of the second rack 642 and the movable rod 643, thereby improving the stability of the second rack 642 and the movable rod 643 during movement.
Preferably, there are two guide rods 646, and two guide sleeves 647 are provided for each guide rod 646. In this embodiment, the guide rod 646 is a round rod.
When the connecting rod 645 abuts against the guide sleeve 647 located above, the guide rod 646 and the movable rod 643 do not descend any more, and the control switch 5 is pressed by the contact block 63 to turn on the sub cooling unit 3. With the above arrangement, the contact block 63 can be prevented from pressing the control switch 5 excessively, and the control switch 5 can be protected.
The diameter of the first gear 6442 is three times that of the second gear 6443, so that the resistance applied when the first rack 641 moves can be reduced, the torque of the second gear 6443 can be increased, the moving distance of the movable rod 643 can be reduced, and the precision of the moving distance of the movable rod 643 can be increased.
Further, as shown in fig. 4, the gas tank 4 includes a tank 41 and a piston 42 disposed in the tank 41, and a sealed chamber communicating with the gas chamber is formed between the piston 42 and the tank 41; the piston 42 can slide with respect to the inner wall of the tank 41, causing the volume of the sealed chamber to vary, so as to regulate the temperature at which the control switch 5 is opened. In this embodiment, the gas in the gas tank 4 is hydrogen, and the hydrogen is more significantly contracted or expanded under the influence of temperature than other gases, so that the temperature change in the tank body 1 can be accurately sensed.
Specifically, the outdoor intelligent terminal box further comprises an adjusting member 43, the adjusting member 43 extends along the moving direction of the piston 42, one end of the adjusting member 43 extends into the gas tank 4 from the bottom of the gas tank 4 and is rotatably connected to the piston 42, and the adjusting member 43 is in threaded connection with the bottom wall of the gas tank 4.
The piston 42 can be driven to ascend or descend by the adjusting piece 43 to adjust the volume of a sealed cavity formed by connecting the piston 42 and the tank body 41, when the piston 42 ascends, the volume of the sealed cavity is reduced, hydrogen in the sealed cavity expands, the air pressure in the sealed cavity is increased, the second pipe fitting 62 moves upwards, the contact block 63 is driven to move downwards by the linkage unit 64 to reduce the distance between the contact block 63 and the control switch 5, and the control switch 5 can be triggered to start the auxiliary cooling unit 3 at a lower temperature. When the piston 42 descends, the volume of the sealing cavity is reduced, hydrogen in the sealing cavity shrinks, the air pressure in the sealing cavity is reduced, the second pipe fitting 62 moves downwards, the contact block 63 is driven by the linkage unit 64 to move upwards, the distance between the contact block 63 and the control switch 5 is increased, and the control switch 5 can be triggered to close the auxiliary cooling unit 3 at a high temperature.
The temperature required by the opening of the control switch 5 can be adjusted according to the heat resistance of different devices in the box body 1 through the adjusting piece 43, and the purposes of energy conservation and power saving can be achieved.
Further, as shown in fig. 2 to 3, a graduated scale 7 is disposed on the inner wall of the box 1 for measuring the moving distance of the first pipe 61 to control the opening temperature of the control switch 5. The scale 7 is located between the auxiliary cooling unit 3 and the linkage unit 64, the pointer 9 is arranged on the first rack 641, the pointer 9 points to the scale 7, and the moving distance of the first pipe 61 can be conveniently observed by matching the pointer with the scale 7. In other embodiments, the temperature at which the control switch 5 turns on the secondary cooling unit 3 can be adjusted by measuring the moving distance of the piston 42, or the moving distance of the first rack 641, or the moving distance of the second rack 642 by the scale 7.
Further, as shown in fig. 1, a sound wave driver 8 is arranged in the box body 1 and used for driving the animals in the box body 1. In this embodiment, the acoustic driver 8 is detachably connected to the case 1, which is advantageous for maintenance and replacement of the acoustic driver 8. Specifically, as shown in fig. 5, the inner wall of the box body 1 is provided with a slide rail 10, the acoustic wave driver 8 is provided with a slide bar 12, the slide rail 10 is in sliding fit with the slide bar 12, the slide bar 12 and the slide rail 10 are respectively provided with a one-to-one corresponding limiting hole, and a pin 11 penetrates through the limiting hole on the slide bar 12 and the corresponding limiting hole on the slide rail 10 so as to install the acoustic wave driver 8 on the inner wall of the box body 1. When the acoustic driver 8 is disassembled, the pin 11 is only required to be pulled out, and the acoustic driver 8 is only required to be pulled out.
When some geckos or small animals enter the box body 1, the secondary wiring terminals of the equipment in the box body 1 can be touched to cause direct current grounding, false operation tripping is protected, even short circuit fire is caused, and fire accidents are caused, and the acoustic wave driver 8 is arranged to drive the geckos or the small animals to enable the equipment in the box body 1 to work normally.
As shown in fig. 1 to 4, the process of cooling by using the outdoor smart terminal box provided in this embodiment is as follows:
when the main cooling unit 2 fails and stops working, the temperature in the box body 1 continuously rises, the gas in the gas tank 4 is heated and expanded, the expanded gas enters the gas cavity through the connecting pipe, the second pipe 62 is forced to extend, the second pipe 62 extends to enable the first rack 641 to act, the first rack 641 drives the second rack 642 to move downwards through the gear transmission assembly 644, the movable rod 643 is driven to descend, when the movable rod 643 descends to a certain distance, the contact block 63 is connected with the touch control switch 5 and presses down the control switch 5, the auxiliary cooling unit 3 is started, and the temperature in the box body 1 is reduced. When the temperature in the box 1 is too low, the gas in the gas tank 4 contracts, which causes the second pipe 62 to move downward and contract, the linkage unit 64 will drive the movable rod 643 to move upward, and the contact block 63 moves upward to release the control switch 5, so as to turn off the secondary cooling unit 3.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. An outdoor intelligent terminal box, comprising:
the intelligent terminal box comprises a box body (1), wherein intelligent terminal equipment is installed in the box body (1);
the intelligent terminal device comprises a main cooling unit (2) and an auxiliary cooling unit (3), wherein the auxiliary cooling unit (3) can be started when the main cooling unit (2) breaks down so as to cool the intelligent terminal device in the box body (1);
a gas tank (4), wherein gas is contained in the gas tank (4);
the driving assembly (6) comprises a first pipe fitting (61) and a second pipe fitting (62), one end of the first pipe fitting (61) is closed, the other end of the first pipe fitting and one end of the second pipe fitting (62) are sleeved to form a closed gas cavity in an enclosing mode, and the gas tank (4) is communicated with the gas cavity;
the gas in the gas tank (4) can expand with heat and contract with cold according to the temperature change in the tank body (1), so that the second pipe fitting (62) can move axially relative to the first pipe fitting (61) to drive the control switch (5) to open and close the auxiliary cooling unit (3).
2. Outdoor intelligent terminal box according to claim 1, characterized in that the control switch (5) is arranged on one side of the drive assembly (6);
the drive assembly further includes:
the contact block (63), the contact block (63) is arranged right opposite to the control switch (5);
a linkage unit (64), wherein the second pipe (62) is connected to the contact block (63) through the linkage unit (64), the contact block (63) is pressed against the control switch (5) to turn on the auxiliary cooling unit (3), or the contact block (63) is separated from the control switch (5) to turn off the auxiliary cooling unit (3).
3. Outdoor intelligent terminal box according to claim 2, characterized in that said linkage unit (64) comprises:
a first rack (641), one end of the first rack (641) being connected to one end of the second pipe member (62);
the second rack (642) can move relative to the box body (1), and the first rack (641) can drive the second rack (642) to move through a gear transmission assembly (644) so as to drive the contact block (63) to move.
4. An outdoor smart terminal box according to claim 3, characterized in that the control switch (5) is located on the side of the second rack (642) facing away from the first rack (641), the linkage unit (64) further comprising:
and the movable rod (643) is connected to one side, back to the first rack (641), of the second rack (642), and the contact block (63) is connected to the movable rod (643).
5. Outdoor intelligent terminal box according to claim 4, characterized in that the gear transmission assembly (644) comprises a rotating shaft (6441) rotatably connected to the box (1) and a first gear (6442) and a second gear (6443) fixedly arranged on the rotating shaft (6441);
the first gear (6442) is engaged with the first rack (641), and the second gear (6443) is engaged with the second rack (642).
6. An outdoor intelligent terminal box according to any of claims 1-5, characterized in that the gas tank (4) comprises a tank (41) and a piston (42) arranged in the tank (41), a sealed cavity communicating with the gas cavity is formed between the piston (42) and the tank (41);
the piston (42) can slide relative to the inner wall of the tank body (41) to change the volume of the sealed cavity so as to adjust the temperature for opening the control switch (5).
7. The outdoor smart terminal box of claim 6, further comprising:
the adjusting piece (43), one end of the adjusting piece (43) stretches into the gas tank (4) from the bottom of the gas tank (4) and is rotatably connected to the piston (42), and the adjusting piece (43) is in threaded connection with the bottom wall of the gas tank (4).
8. Outdoor intelligent terminal box according to claim 6, characterized in that a graduated scale (7) is arranged on the inner wall of the box body (1) for measuring the moving distance of the piston (42) or the second tube (62) to control the opening temperature of the control switch (5).
9. Outdoor intelligent terminal box according to any of claims 1-5, characterized in that inside the box (1) there is a sonic driver (8) for driving animals inside the box (1).
10. Outdoor intelligent terminal box according to claim 9, characterized in that the sonic driver (8) is removably connected to the inner wall of the box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069583.5A CN112272490B (en) | 2020-09-30 | 2020-09-30 | Outdoor intelligent terminal box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069583.5A CN112272490B (en) | 2020-09-30 | 2020-09-30 | Outdoor intelligent terminal box |
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| CN112272490A true CN112272490A (en) | 2021-01-26 |
| CN112272490B CN112272490B (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011069583.5A Active CN112272490B (en) | 2020-09-30 | 2020-09-30 | Outdoor intelligent terminal box |
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| CN113054283A (en) * | 2021-03-18 | 2021-06-29 | 潍柴动力股份有限公司 | Battery cooling system and electric automobile |
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| CN112272490B (en) | 2022-07-29 |
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