阅读说明：本技术 一种紧急潜水避难所 (Emergency diving shelter ) 是由 金星 于 2021-07-22 设计创作，主要内容包括：本发明提出了一种紧急潜水避难所,涉及避难装置领域。一种紧急潜水避难所,包括潜水避难单元,上述潜水避难单元包括潜水方仓,上述潜水方仓具有密闭式内腔,上述密闭式内腔用于避难人员进行避难,上述潜水方仓设置有调节方仓,上述调节方仓具有蓄水腔,上述调节方仓设置有用于调节其蓄水腔水位的水泵系统；避难所主体,上述避难所主体由多个上述潜水避难单元可拆卸连接组成。本发明中潜水方仓的密闭式内腔可供避难人员避难,且和调节方仓配合,使避难人员进入到水下,使得避难所具有水下避难的功能；避难所主体由多个上述潜水避难单元可拆卸连接组成,可为避难人员提供及时、便捷的临时性或长期避险救生保障。(The invention provides an emergency diving shelter, and relates to the field of shelter devices. An emergency diving shelter comprises a diving shelter unit, wherein the diving shelter unit comprises a diving square bin, the diving square bin is provided with a closed inner cavity, the closed inner cavity is used for sheltering people, the diving square bin is provided with an adjusting square bin, the adjusting square bin is provided with a water storage cavity, and the adjusting square bin is provided with a water pump system used for adjusting the water level of the water storage cavity; the refuge main body is formed by detachably connecting a plurality of the diving refuge units. The closed inner cavity of the diving square bin can be used for refuge by refugees, and is matched with the adjusting square bin to enable the refugees to enter underwater, so that the refuge station has the function of underwater refuge; the refuge main body is formed by detachably connecting a plurality of the diving refuge units, and can provide timely, convenient and fast temporary or long-term refuge and life-saving guarantee for refugees.)

1. An emergency diving shelter, comprising:

the underwater refuge unit comprises an underwater square bin, the underwater square bin is provided with a closed inner cavity, the closed inner cavity is used for refugees to carry out refuge, the underwater square bin is provided with an adjusting square bin, the adjusting square bin is provided with a water storage cavity, and the adjusting square bin is provided with a water pump system used for adjusting the water level of the water storage cavity;

the refuge main body is formed by detachably connecting a plurality of the diving refuge units.

2. An emergency diving shelter as claimed in claim 1, wherein the diving shelter has cylindrical shape, and the four sides of the diving shelter are provided with connecting pipes, and the diving shelter is arranged in series from four sides to form the shelter body.

3. An emergency diving shelter according to claim 2, wherein said diving shelter is provided with connecting tubes on all four sides, and adjacent diving shelters are formed by abutting their opposing connecting tubes.

4. An emergency diving shelter as claimed in claim 3, wherein the connecting tube is connected with the inner cavity of the diving square cabin, and a waterproof sealing plate for sealing the tube opening is detachably arranged in the connecting tube.

5. An emergency diving shelter according to claim 2, further comprising a load-bearing floor, said load-bearing floor being disposed at the bottom of the inner chamber of said diving shelter.

6. An emergency diving shelter as claimed in claim 5, wherein the number of said square adjustment cabins is two, and two of said square adjustment cabins are symmetrically disposed on both sides of said square diving cabin.

7. An emergency diving shelter according to claim 1, wherein the underside of the unit is provided with running gear.

8. An emergency diving shelter as claimed in claim 1, further comprising a seawater desalination vessel, said seawater desalination vessel being disposed in the interior chamber of said diving party.

9. An emergency diving shelter as claimed in claim 1, wherein the water pump system comprises a drain pump for draining the conditioning shelter, and further comprises an inlet pump for filling the conditioning shelter with water.

10. An emergency diving shelter as claimed in claim 1, wherein said diving square and said adjusting square are fiberglass square.

Technical Field

The invention relates to the technical field of refuge devices, in particular to an emergency diving shelter.

Background

In recent years, disasters (geological disasters such as flood, fire, earthquake and the like) around the world frequently occur, and the lives and properties of people are seriously threatened. Due to the sudden nature and complexity of disasters and strong destructive power during disaster outbreak, people are difficult to escape, and a large number of casualties are easy to cause in a short time. One effective method for dealing with the disaster is to arrange some fixed shelters in underground facilities and civil defense projects for people in danger to enter the shelters to reduce the casualty degree of the people.

However, the conventional refuges (some fixed refuges in underground facilities and civil defense works) mainly have the following problems:

1. refuges can only be installed on land, and have the problem of large limitation.

2. Most refuges are public refuges, but the people are difficult to quench thirst when the people go far away from water, and a family and business fire refuge which is mutually complemented with the public refuge is needed to be researched so as to provide a timely, convenient and temporary refuge and lifesaving guarantee for people.

In summary, an emergency diving shelter is provided to solve the technical problems.

Disclosure of Invention

The invention aims to provide an emergency diving shelter, which not only has the function of underwater shelter, but also provides timely, convenient and fast temporary or long-term refuge and life-saving guarantee.

The embodiment of the invention is realized by the following steps:

the embodiment of the application provides an emergency diving shelter, including:

the underwater refuge unit comprises an underwater square bin, the underwater square bin is provided with a closed inner cavity, the closed inner cavity is used for refugees to carry out refuge, the underwater square bin is provided with an adjusting square bin, the adjusting square bin is provided with a water storage cavity, and the adjusting square bin is provided with a water pump system used for adjusting the water level of the water storage cavity;

the refuge main body is formed by detachably connecting a plurality of the diving refuge units.

In some embodiments of the invention, the diving square cabin of the diving refuge unit is cylindrical, connecting pipes are arranged on four sides of the diving square cabin, and the diving refuge unit is continuously arranged in four directions to form the refuge main body.

In some embodiments of the present invention, the diving square cabins are provided with connecting pipes on four sides, and adjacent diving square cabins are formed by abutting opposite connecting pipes.

In some embodiments of the present invention, the connecting pipe is communicated with the inner cavity of the diving square cabin, and a waterproof sealing plate for sealing the pipe orifice of the connecting pipe is detachably disposed in the connecting pipe.

In some embodiments of the present invention, the diving shelter further comprises a bearing bottom plate, and the bearing bottom plate is disposed at the bottom of the inner cavity of the diving square cabin.

In some embodiments of the present invention, the number of the adjusting square cabins is two, and the two adjusting square cabins are symmetrically disposed on two sides of the diving square cabin.

In some embodiments of the invention, the bottom side of the diving shelter unit is provided with a walking mechanism.

In some embodiments of the present invention, the submersible vehicle further comprises a seawater desalination device, and the seawater desalination device is disposed in an inner cavity of the submersible party.

In some embodiments of the present invention, the water pump system includes a drain pump for draining the conditioning cube, and further includes a water inlet pump for filling the conditioning cube.

In some embodiments of the present invention, the diving square cabin and the adjusting square cabin are both glass fiber reinforced plastic square cabins.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

an emergency diving shelter comprises a diving shelter unit, wherein the diving shelter unit comprises a diving square bin, the diving square bin is provided with a closed inner cavity, the closed inner cavity is used for sheltering people, the diving square bin is provided with an adjusting square bin, the adjusting square bin is provided with a water storage cavity, and the adjusting square bin is provided with a water pump system used for adjusting the water level of the water storage cavity; the refuge main body is formed by detachably connecting a plurality of the diving refuge units.

In the invention, when severe disasters (geological disasters such as flood, fire, earthquake and the like) occur, a plurality of diving refuge units are assembled into a refuge main body, the refuge main body is placed in water, and refugees enter a diving square cabin, and in an initial state, the diving square cabin belongs to a sealed inner cavity, the adjusting square cabin is provided with a sealed water storage cavity, so that the refuge main body has certain buoyancy, and the gravity of the refugees in the diving square cabin is far smaller than the buoyancy of the refuge main body. The water pump system is adjusted to fill the adjusting square bin, when too much water is filled in the adjusting square bin, the gravity of the refuge main body is far larger than the buoyancy of the refuge main body, and the refuge main body sinks to the bottom of the water for refugees to refuge. On the contrary, when the refuge is finished, the water pump system is adjusted to enable the water pump system to discharge the water quantity in the adjusting square bin, the buoyancy of the adjusting square bin is increased, the buoyancy of the refuge main body is increased, when the buoyancy of the refuge main body is larger than the self gravity of the refuge main body, the refuge main body floats to the water surface, refuge personnel can leave the refuge system, and all the diving refuge units are detached and recovered. In the process, the closed inner cavity of the diving square bin can be used for refuge by refugees, and is matched with the adjusting square bin to enable the refugees to enter the water, so that the refuge station has the function of underwater refuge. The refuge main body is formed by detachably connecting a plurality of the diving refuge units, can provide timely, convenient and fast temporary or long-term refuge and lifesaving guarantee for refugees, can be purchased according to family conditions, is convenient to popularize, enables all families to independently refuge, and changes the traditional public refuge mode (refugees need to refuge in a public area).

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a first schematic structural diagram of an emergency shelter according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of an emergency shelter according to an embodiment of the present invention;

fig. 3 is a sectional view of a diving shelter in accordance with an embodiment of the present invention.

Icon: 1-adjusting square bin, 2-diving square bin, 3-connecting pipe, 4-running gear, 5-waterproof sealing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if 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 or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.

Examples

Referring to fig. 1-3, an emergency diving shelter comprises:

the underwater refuge unit comprises an underwater square bin 2, the underwater square bin 2 is provided with a closed inner cavity, the closed inner cavity is used for refugees to refuge, the underwater square bin 2 is provided with an adjusting square bin 1, the adjusting square bin 1 is provided with a water storage cavity, and the adjusting square bin 1 is provided with a water pump system for adjusting the water level of the water storage cavity;

the refuge main body is formed by detachably connecting a plurality of the diving refuge units.

In the invention, when severe disasters (geological disasters such as flood, fire, earthquake and the like) occur, a plurality of diving refuge units are assembled into a refuge main body, the refuge main body is placed in water, and refugees enter a diving square cabin 2, and in an initial state, because the diving square cabin 2 belongs to a sealed inner cavity, an adjusting square cabin 1 is provided with a sealed water storage cavity, the refuge main body has certain buoyancy, and the gravity of the refugees in the diving square cabin 2 is far smaller than the buoyancy of the refuge main body. The adjusting square bin 1 is filled with water through the adjusting water pump system, when the adjusting square bin 1 is filled with too much water, the gravity of the refuge main body is far larger than the buoyancy of the refuge main body, and the refuge main body sinks to the bottom of the water for refugees. On the contrary, after refuge is finished, the water pump system is adjusted to enable the water pump system to discharge the water quantity in the adjusting square cabin 1, the buoyancy of the adjusting square cabin 1 is increased, the buoyancy of the refuge main body is increased, when the buoyancy of the refuge main body is larger than the self gravity of the refuge main body, the refuge main body floats to the water surface, refuge personnel can leave the refuge system, and then all the diving refuge units are detached and recovered. In the process, the closed inner cavity of the diving square bin 2 can be used for refuge by refugees, and is matched with the adjusting square bin 1 to enable the refugees to enter the water, so that the refuge station has the function of underwater refuge. The refuge main body is formed by detachably connecting a plurality of the diving refuge units, can provide timely, convenient and fast temporary or long-term refuge and lifesaving guarantee for refugees, can be purchased according to family conditions, is convenient to popularize, enables all families to independently refuge, and changes the traditional public refuge mode (refugees need to refuge in a public area).

It is worth to say that the refuge main body is connected with an external vent pipe for water surface air intake, the refuge main body has a water body constant temperature protection effect and a defense effect, the refuge main body can be further provided with a power generation cabin, a power generation system is arranged in the power generation cabin, the power generation system can be used for supplying power to a sealed inner cavity of the diving square cabin 2, and when the diving square cabin 2 is provided with electrical equipment, the power supply system supplies power to the electrical equipment, so that the daily life of refugees in the diving square cabin 2 is facilitated. An oxygen supply system is arranged in the diving square cabin 2 and used for supplying oxygen to refugees in the diving square cabin 2, the diving square cabin 2 can also be provided with a power cabin which can be used for pushing the refuge main body to advance in water, and the power cabin can be a spiral propeller. The water pump system can be used for controlling and adjusting the water quantity in the square cabin 1, so that the overall weight of the main body of the refuge is controlled. The invention has the function of long-term refuge, such as serious natural disasters like nuclear wars, gamma ray explosion, abnormal high-temperature climate, abnormal low-temperature climate, ice river period and the like.

During actual manufacturing and processing, the water storage cavity of the adjusting square bin 1 is ensured to be large enough, and the whole refuge main body is far larger than the buoyancy of the whole body after the strip secondary square bin is filled with water, so that the refuge main body can sink to the bottom of the water, and the design is carried out according to actual conditions.

In some embodiments of the present invention, the diving shelter 2 of the diving shelter unit is cylindrical, the connecting pipes 3 are arranged on four sides of the diving shelter 2, and the diving shelter unit is arranged in four directions to form the shelter body.

In the above embodiment, the cylindrical diving square cabin 2 is transversely arranged, the connecting pipes 3 are arranged on the upper side, the lower side, the left side and the right side of the diving square cabin 2, the diving refuge units are arranged in a four-way continuous manner, that is, four sides of a single diving refuge unit are respectively and independently connected with the same type of diving refuge unit, and the remaining sides of the connected diving refuge units can still be connected with the same type of diving units, and are connected in sequence as described above, namely, the four-way continuous arrangement of the diving refuge units is formed. When the refuge main body is actually produced, the connection number of the plurality of diving refuge units can be selected according to the actual situation, so that the use flexibility of the refuge system is improved, and the problems that the refuge main body is insufficient or the space of the refuge main body is wasted due to the fact that too many or too few refuge personnel exist are avoided.

In some embodiments of the present invention, the diving square chamber 2 is provided with connecting pipes 3 on four sides, and adjacent diving square chambers 2 are formed by abutting the opposite connecting pipes 3.

In the above embodiment, for the diving square cabins 2 adjacent to each other and connected with the refuge main body, the two diving square cabins 2 are connected through the connecting pipe 3, the two opposite connecting pipes 3 are detachably connected through the bolts, the bolt connection mode has the advantage of quick disassembly or assembly, so that the diving refuge unit has the advantage of quick assembly, the number of bolts in the circumferential direction along the connecting pipes 3 is multiple, and the stability of connection of the two connecting pipes 3 is improved. The waterproof gasket is arranged at the connecting pipes 3 which are in butt joint, so that the butt joint tightness of the two connecting pipes 3 is better, the risk of water leakage at the gap between the two connecting pipes 3 is reduced, and the refuge safety of refugees in the inner cavity of the diving square cabin 2 is improved.

Dive square storehouse 2 and connecting pipe 3 adopt integrated into one piece processing mode for connecting pipe 3 is more stable with being connected of dive square storehouse 2, and sealing performance is also better.

In some embodiments of the present invention, the connecting tube 3 is communicated with the inner cavity of the diving square chamber 2, and a waterproof sealing plate 5 for sealing the tube opening is detachably disposed in the connecting tube 3.

In the above embodiment, the connecting pipes 3 are communicated with the inner cavities of the diving square cabins 2, and for the connecting pipes 3 which are adjacently butted with each other in the refuge main body, the two connecting pipes 3 are not internally provided with the waterproof sealing plates 5, so that the adjacent diving square cabins 2 are communicated, and refugees can walk in a plurality of diving premises. For the diving square bin 2 at the outer side of the shelter, the diving square bin 2 is provided with a connecting pipe 3 which is not butted, and the connecting pipe 3 is provided with a water drainage sealing plate, so that the aim of sealing the main body of the shelter can be fulfilled, and water is prevented from flowing into the diving square bin 2.

Waterproof sealing plate 5 sets up in connecting pipe 3 inboard, and connecting pipe 3 is cylindricly, and waterproof sealing plate 5's the outside is provided with the external screw thread, is provided with the internal thread in the connecting pipe 3, and waterproof sealing plate 5's external screw thread and connecting pipe 3's internal thread engagement to realize connecting pipe 3 and waterproof sealing plate 5 can dismantle and be connected. Connecting pipe 3 passes through threaded connection with waterproof sealing plate 5 for connecting pipe 3 is connected more fast with dismantling of waterproof sealing plate 5. The inboard and the outside of waterproof sealing plate 5 all are provided with the adjustable ring, can be used to the dismantlement installation of waterproof sealing plate 5.

In some embodiments of the present invention, the present invention further comprises a bearing bottom plate, wherein the bearing bottom plate is arranged at the bottom of the inner cavity of the diving square cabin 2.

In the above embodiment, the bearing bottom plate is arranged at the bottom of the diving square cabin 2, the diving square cabin 2 is cylindrical, the inner side is arc-shaped, and refugees cannot stand on the inner side of the diving square cabin 2 easily. The bearing bottom plate is a flat plate and is horizontally arranged in the inner cavity of the diving square cabin 2, and refugees can stand on the bearing bottom plate, so that the refuge device has the advantage of convenience in refuge. The bearing bottom plate is made of glass fiber reinforced plastic and is adhered to the bottom of the diving square cabin 2.

In some embodiments of the present invention, the number of the adjusting square cabins 1 is two, and two of the adjusting square cabins 1 are symmetrically disposed on two sides of the diving square cabin 2.

In the above embodiment, the adjusting square bins 1 are arranged at two sides of the diving square bin 2, and when the two adjusting square bins 1 are arranged at two sides of the diving square bin 2, the center of the diving square bin 2 is still located on the longitudinal central axis thereof, so that the balance of the diving square bin 2 cannot be affected by the two adjusting square bins 1. The adjusting square cabin 1 is cylindrical, and the adjusting square cabin 1 is also transversely arranged, namely the adjusting direction is the same as the orientation arrangement of the diving square cabin 2. It should be noted here that the number of the adjusting square bins 1 is two, which is only one implementation manner of the embodiment of the present invention, and the number of the adjusting square bins 1 is not limited, and in other embodiments, the number of the adjusting square bins 1 may be other numbers, and detailed description thereof is omitted.

In some embodiments of the invention, the bottom side of the diving shelter unit is provided with a running gear 4.

In the above embodiment, the running mechanism 4 is a four-wheel running mechanism to ensure the stable running of the diving shelter unit, and the four-wheel running mechanism 4 is composed of four universal wheels (mean wheels), which are conventional wheel rotating shaft wheels parallel to a plurality of roller circumferential wheels and roller plates on a plane and are at 45 degrees of rotation axis. The castor is capable of moving in any direction using standard chassis shapes. Universal wheels (Mecanum wheels) it can move in any direction.

In some embodiments of the present invention, the submersible vehicle further comprises a seawater desalination device, and the seawater desalination device is disposed in an inner cavity of the submersible party.

In the embodiment, the seawater desalination device can convert seawater into fresh water for refugees to eat, and when the invention is applied to seawater, the function of self-supply water can be realized. The invention can also be equipped with a reverse osmosis water purifier.

In some embodiments of the present invention, the water pump system includes a drain pump for draining the conditioning square bin 1, and further includes a water inlet pump for filling the conditioning square bin 1 with water.

In the above embodiment, when the adjusting square cabin 1 is filled with water, the water inlet pump is started to fill the adjusting square cabin 1 with water, so as to adjust the increase of the overall gravity of the refuge main body, and when the gravity of the refuge main body is increased to a certain value (greater than the self buoyancy of the diving refuge), the refuge main body sinks; when the adjusting square cabin 1 drains water, the drainage pump is started to pump out the water in the adjusting square cabin 1 so as to adjust the reduction of the overall gravity of the refuge main body, and when the gravity of the refuge main body is reduced to a certain value (smaller than the self buoyancy of the diving refuge), the refuge main body floats upwards.

In some embodiments of the present invention, the diving square cabin 2 and the adjusting square cabin 1 are both glass fiber reinforced plastic square cabins.

In the above embodiments, the glass Fiber Reinforced Plastic (FRP), also called GFRP, is a fiber reinforced plastic, which generally refers to a reinforced plastic using glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix, and glass fiber or its product as a reinforcing material, and is called glass fiber reinforced plastic, or glass fiber reinforced plastic, and is different from tempered glass. The glass fiber reinforced plastic square bin has the advantages of light weight, high strength (the relative density is between 1.5 and 2.0, only the carbon steel is 1/4 to 1/5, but the tensile strength is close to or even exceeds the carbon steel, and the specific strength can be compared with high-grade alloy steel.

In summary, the embodiments of the present invention provide an emergency diving shelter, which has at least the following technical effects:

in the invention, when severe disasters (geological disasters such as flood, fire, earthquake and the like) occur, a plurality of diving refuge units are assembled into a refuge main body, the refuge main body is placed in water, and refugees enter a diving square cabin 2, and in an initial state, because the diving square cabin 2 belongs to a sealed inner cavity, an adjusting square cabin 1 is provided with a sealed water storage cavity, the refuge main body has certain buoyancy, and the gravity of the refugees in the diving square cabin 2 is far smaller than the buoyancy of the refuge main body. The adjusting square bin 1 is filled with water through the adjusting water pump system, when the adjusting square bin 1 is filled with too much water, the gravity of the refuge main body is far larger than the buoyancy of the refuge main body, and the refuge main body sinks to the bottom of the water for refugees. On the contrary, after refuge is finished, the water pump system is adjusted to enable the water pump system to discharge the water quantity in the adjusting square cabin 1, the buoyancy of the adjusting square cabin 1 is increased, the buoyancy of the refuge main body is increased, when the buoyancy of the refuge main body is larger than the self gravity of the refuge main body, the refuge main body floats to the water surface, refuge personnel can leave the refuge system, and then all the diving refuge units are detached and recovered. In the process, the closed inner cavity of the diving square bin 2 can be used for refuge by refugees, and is matched with the adjusting square bin 1 to enable the refugees to enter the water, so that the refuge station has the function of underwater refuge. The refuge main body is formed by detachably connecting a plurality of the diving refuge units, can provide timely, convenient and fast temporary or long-term refuge and lifesaving guarantee for refugees, can be purchased according to family conditions, is convenient to popularize, enables all families to independently refuge, and changes the traditional public refuge mode (refugees need to refuge in a public area).

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.