Fire hydrant backpack and fire hydrant thereof

Abstract

The fire hydrant backpack comprises a shell and an internal assembly, the shell comprises an upper cover and a lower cover which are detachable and arranged in a sealed mode, the upper cover and the lower cover define a containing cavity for containing the internal assembly, the fire hydrant backpack further comprises a connector penetrating through the containing cavity, one end of the connector is electrically connected with the internal assembly, and the other end of the connector is electrically connected with the internal assembly. The other opposite end and the fire hydrant are arranged in a perceptible manner; through the joint arranged at one end of the fire hydrant in a perceptible mode, common features in the fire hydrant can be collected accurately in real time, then wireless communication with the outside is achieved under the combined action of the main board and the antenna of the internal assembly, continuous water pressure detection can be conducted on the fire hydrant, and the detection accuracy is improved. Therefore, intelligent monitoring of the fire hydrant and management of the internet of things are improved, the operation cost is reduced, and meanwhile the safety guarantee degree of life and property of the public and public property is improved.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, specifically relating to a fire hydrant backpack and its fire hydrant. Background Technology

[0002] With rapid economic development and urbanization, fire prevention has become an increasingly challenging task. As a crucial component of public fire-fighting facilities protecting people's lives and property, fire hydrants suffer from outdated infrastructure, inadequate maintenance, and lagging supervision. Currently, fire hydrants are frequently found to be damaged, and prolonged exposure to wind and sun accelerates their aging and shortens their lifespan. This seriously hinders the timely extinguishing of fires and fails to adequately guarantee the safety of people's lives and property.

[0003] Existing fire hydrants have the following shortcomings: 1) They cannot display the water pressure inside the hydrant. Once a fire alarm occurs, it is only after the hydrant is opened that it is known whether there is water or whether the pressure is sufficient, delaying valuable rescue time; 2) When managers inspect fire hydrants, they must go to the site to check the appearance of each one for damage and leaks, and they must open the outlet valve to test the water pressure, wasting a lot of manpower, energy, and resources; 3) If a fire hydrant leaks, is used improperly, or is knocked over, the regulatory department has no way of knowing, which not only wastes resources but also affects the production and life of the masses and local fire rescue, and water fee collection may also cause disputes; 4) Fire hydrants are simply surrounded by iron bars, which can provide some protection against impact, but cannot prevent the theft of fire hydrant parts; 5) Fire hydrants do not have an early warning system. It is only after the fire hydrant has been illegally used or damaged that the problem is discovered. By the time the staff arrives at the scene, the person illegally using water or the person who damaged the hydrant has already left. Criminals are emboldened and become even more brazen, causing property damage and increasing the probability of serious incidents; 6) There is no good centralized monitoring and management system for fire hydrants, resulting in frequent fire safety hazards, inadequate supervision, and delayed fire rescue, which cannot meet the requirements of the current severe fire protection situation.

[0004] To address these issues, engineers proposed the concept of smart fire hydrants: intelligent fire hydrants capable of detecting hydrant status and integrating with the Internet of Things (IoT) to replace existing non-intelligent fire hydrants. However, due to the limited number of fire hydrants, replacement requires substantial financial investment and time-consuming operations, posing a significant challenge to public safety and the security of public property. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a fire hydrant backpack that can be quickly modified based on existing fire hydrants. It supports wireless communication and positioning functions, and can continuously monitor the water pressure of fire hydrants, enabling automatic alarms for high and low pressure exceeding limits. This improves the intelligent monitoring and IoT management of fire hydrants, reduces operating costs, and enhances the safety of public life and property.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] A fire hydrant backpack includes a shell and internal components. The shell includes a detachable and sealed upper cover and a lower cover, which together form a storage cavity for the internal components. It also includes a connector penetrating the storage cavity, one end of which is electrically connected to the internal components, and the other end, opposite to the fire hydrant, is connected to the fire hydrant. The internal components include a battery, a bracket, a main board, and an antenna. The battery is fixed within the internal cavity of the lower cover by the bracket. The main board and antenna are detachably fixed within the internal cavity of the lower cover and electrically connected to the battery. Through the connector connected to the fire hydrant, common characteristics of the fire hydrant can be collected in real time and accurately. Then, with the combined action of the main board and antenna of the internal components, wireless communication with the outside is achieved. This enables continuous water pressure detection of the fire hydrant, automatic alarm for high and low pressure exceeding limits, thereby improving intelligent monitoring and IoT management of the fire hydrant, reducing operating costs, and enhancing the safety of public life and property.

[0008] Furthermore, it also includes a sensor installed between the lower cover and the fire hydrant. One end of the sensor passes through the lower cover and is electrically connected to the internal components, while the other end is connected to the internal sensing device of the fire hydrant.

[0009] Furthermore, the lower cover includes a side plate and a bottom plate. The side plate is a storage cavity formed by connecting the ends of the plates together. The bottom plate is located inside the cavity of the side plate and is sealed to the side plate.

[0010] Furthermore, it also includes a skirt that is provided at the connection end between the side plate and the bottom plate and extends in a direction away from the bottom plate.

[0011] Furthermore, the two ends of the short side of the skirt are processed into concave arc surfaces, while the two ends of the long side of the skirt are kept straight.

[0012] Furthermore, the lower cover also includes a label built into the side panel and moving in tandem with the side panel.

[0013] Furthermore, the bracket includes a body, at least two limiting plates and a fixing seat, wherein the limiting plates and the fixing seat are branches formed by bending the remaining parts after cutting from both ends of the body; the limiting plates located at both ends of the body together with the body form an internal cavity for accommodating the battery; the fixing seats are located at both ends of the body and extend in a direction away from the body.

[0014] Furthermore, after the limiting plate is cut from the main body, the remaining part is bent upward to form a branch extending in a direction perpendicular to the main body; after the fixing seat is cut from both ends of the main body, the remaining part is bent downward to form a branch that is spaced apart from the main body and extends parallel to the horizontal plane of the main body in a direction away from the main body.

[0015] Furthermore, it also includes a waterproof button located on the sensor end side, between the bracket and the lower cover.

[0016] On the other hand, this utility model also provides a fire hydrant, including any of the above-mentioned fire hydrant backpacks; the fire hydrant backpack is integrally formed with or separately disposed from the outer shell of the fire hydrant (100).

[0017] The fire hydrant backpack and its fire hydrant provided in the above embodiments, with corresponding openings and paired second through holes, facilitate the fixing and disassembly of the fire hydrant. Fixing straps such as chains, cable ties, and clamps pass through the second through holes for detachable fixing to the fire hydrant. This extremely conveniently achieves the binding of the fire hydrant to the existing fire hydrant, enabling IoT connectivity for the existing fire hydrant without modification. This allows for wireless communication and positioning functions, thereby improving intelligent monitoring and IoT management of the fire hydrant, reducing operating costs, and enhancing the safety of public life and property. The fire hydrant is further enhanced by opening a second through hole on the side plate away from the connector. The second transparent cover allows for identification and reading of labels built into the side panel without disassembly; it enables one-to-one traceability of each hydrant through digital barcode recognition; a sensor located between the lower cover and the fire hydrant can monitor the fixation status of the fire backpack, triggering an alarm mechanism and sending a notification to the cloud platform if the backpack becomes loose or is maliciously disassembled; or, through the built-in modes of the sensor, different functions can be achieved, such as automatically alarming upon impact based on tilt angle and frequency of external force tapping, and initiating Bluetooth interaction upon regular tapping, with Bluetooth interaction functions including, but not limited to, parameter adjustment, firmware upgrade, and installation status self-learning. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a fire hydrant backpack;

[0019] Figure 2 Another schematic diagram of the fire hydrant backpack structure;

[0020] Figure 3 Another schematic diagram of the fire hydrant backpack structure;

[0021] Figure 4 The structure is designed for a support frame suitable for fire hydrant backpacks;

[0022] Figure 5 A schematic diagram of the installation structure of a fire hydrant backpack;

[0023] Figure 6 This is a schematic diagram of another installation structure for a fire hydrant backpack. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that if any directional indication, such as up, down, left, right, front, back, etc., is involved in the embodiments of this utility model, such directional indication is only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. Furthermore, if any description involving "first," "second," "S1," "S2," "step one," "step two," etc., is involved in the embodiments of this utility model, such description is only for descriptive purposes and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the execution order of the method. Those skilled in the art will understand that anything that does not violate the essential points of the utility model within the scope of its inventive concept should be included within the protection scope of this utility model.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, a fire hydrant backpack according to a partial exemplary embodiment includes a shell and internal components. The shell includes a detachable and sealed upper cover 10 and a lower cover 20, which enclose a storage cavity for storing the internal components. The backpack also includes a connector 40 that passes through the storage cavity. One end of the connector 40 is electrically connected to the internal components, and the other end is connected to the fire hydrant 100 in a perceptible manner.

[0027] The internal components include a battery 31, a bracket 32, a motherboard 34, and an antenna 35. The battery 31 is fixed in the internal cavity of the lower cover 20 by the bracket 32. The motherboard 34 and the antenna 35 are detachably fixed in the internal cavity of the lower cover 20 and are electrically connected to the battery 31.

[0028] Therefore, the fire hydrant backpack provided in this application embodiment can collect common features of fire hydrants in real time and accurately through a connector that can be sensed at one end of the fire hydrant. Then, with the joint action of the motherboard and antenna of the internal components, wireless communication with the outside can be realized. It can continuously detect the water pressure of the fire hydrant and realize automatic alarm for high and low pressure exceeding the limit, thereby improving the intelligent monitoring and Internet of Things management of fire hydrants, reducing operating costs, and improving the safety of public life and property.

[0029] Optionally, such as Figure 2 and Figure 3 As shown, to facilitate monitoring of the fixed status between the fire backpack and the fire hydrant 100, a sensor 50 is also included, positioned between the lower cover 20 and the fire hydrant 100. One end of the sensor 50 passes through the lower cover 20 and is electrically connected to the internal components, while the other end is connected to the internal sensing device of the fire hydrant 100. Thus, by using the sensor positioned between the lower cover and the fire hydrant, the fixed status of the fire backpack can be monitored. If the fire backpack becomes loose or is maliciously disassembled, the sensor can trigger an alarm mechanism and send an alert to the cloud platform. Alternatively, different functions can be achieved through the sensor's built-in modes, such as automatically triggering an alarm upon impact based on tilt angle and frequency of external impact, and activating Bluetooth interaction upon regular tapping. Bluetooth interaction functions include, but are not limited to, parameter adjustment, firmware upgrades, and self-learning of installation status.

[0030] Optionally, such as Figure 1 As shown, the upper cover 10 is a shell with one open end. Preferably, the upper cover 10 is detachably connected to the lower cover 20 by bolts. In order to facilitate the inspection of the operating conditions of the components in the internal cavity formed by the upper cover 10 and the lower cover 20, a first transparent cover 11 is also provided on the top surface of the upper cover 10. The first transparent cover 11 extends through the upper cover 10 and extends along the length direction of the upper cover 10.

[0031] Optionally, such as Figure 2As shown, the lower cover 20 is a shell with one open end. Specifically, it includes a side plate 21 and a bottom plate 22. The side plate 21 is a cavity formed by connecting the ends of the plates. The bottom plate 22 is located inside the cavity of the side plate 21 and is sealed to the side plate 21. Preferably, to ensure convenient, reliable, and stable fixing to the fire hydrant 100, a skirt 23 is also included, which is provided on the end side where the side plate 21 and the bottom plate 22 are connected and extends away from the bottom plate 22. Further, the end side of the skirt 23 away from the bottom plate 22 is machined with an arc surface. Thus, by machining the arc surface on the end side of the skirt 23, it is possible to conveniently fix it to the fire hydrant 100. Specifically, the arc surface on the end side of the skirt 23 is a concave arc surface. Preferably, the two ends of the short side of the skirt 23 are machined into concave arc surfaces, and the two ends of the long side of the skirt 23 are kept straight. Therefore, by processing the two ends of the short side of the skirt into concave arc surfaces, it can fit snugly to the outer periphery of the fire hydrant 100, making it easier and more secure to fix to the fire hydrant 100.

[0032] Optionally, in order to improve the stability and reliability of fixing to the fire hydrant 100, at least one reinforcing rib 24 is also provided between the base plate 22 and the skirt 23, and the reinforcing rib 24 is provided at intervals along the edge connecting the base plate 22 and the skirt 23.

[0033] Optionally, to facilitate the installation and fixing of internal parts, a first through hole 25 is also provided on the base plate 22. The first through hole 25 penetrates the base plate 22 and is connected to the storage cavity formed by the upper cover 10 and the lower cover 20. In this application, after the sensor 50 passes through the first through hole 25, one end is electrically connected to the internal components, and the other end is connected to the internal sensing of the fire hydrant 100.

[0034] Optionally, the lower cover 20 is further provided with at least two second through holes 26, which penetrate the lower cover 20 and are spaced apart along its periphery. Preferably, the second through holes 26 penetrate the skirt 23 and are spaced apart on the periphery of the skirt 23. Further, the second through holes 26 are in pairs, with the openings corresponding to each other on the periphery of the long side of the skirt 23. Thus, the paired second through holes, with their corresponding openings, facilitate the fixing and disassembly of the fire hydrant. For example, by using fixing chains, cable ties, clamps, or other fixing straps to pass through the second through holes, the fire hydrant can be detachably fixed, making it extremely convenient to bind the fire backpack to the existing fire hydrant. This allows for the Internet of Things (IoT) integration of the existing fire hydrant without requiring modifications to the hydrant, enabling wireless communication and positioning functions, thereby improving the intelligent monitoring and IoT management of the fire hydrant, reducing operating costs, and enhancing the safety of public life and property.

[0035] Optionally, to facilitate the supervision and management of fire backpacks and enable traceability of individual fire backpacks, the lower cover 20 also includes a label 27 built into the side panel 21 and moving together with the side panel 21. Specifically, the label 27 is built into the side surface of the side panel 21 away from the connector 40. Preferably, a second transparent cover 28 is provided on the side surface of the side panel 21 away from the connector 40, and the second transparent cover 28 is detachable and sealed from the side panel 21. Thus, the label built into the side panel can be identified and read without disassembly through the second transparent cover on the side surface of the side panel away from the connector.

[0036] In addition, regarding the form of label 27, it includes patterns that are not limited to product QR codes, product barcodes, or RFID tags, and can achieve one-to-one traceability through digital barcode identification.

[0037] In summary, the lower cover provided in this application, with its paired second through holes corresponding to each other, facilitates the fixing and disassembly of the fire hydrant. After the fixing straps such as chains, cable ties, and clamps pass through the second through holes, it is detachably fixed to the fire hydrant, extremely conveniently enabling the binding of the fire backpack to the existing fire hydrant. This allows for the Internet of Things (IoT) integration of the existing fire hydrant without requiring modifications, enabling wireless communication and positioning functions. This improves the intelligent monitoring and IoT management of the fire hydrant, reduces operating costs, and enhances the safety of public life and property. Furthermore, the second transparent cover located on the side panel away from the connector allows for the identification and reading of labels built into the side panel without disassembly. Digital barcode identification enables one-to-one traceability for each fire hydrant.

[0038] In the embodiments of this application, such as Figure 3 and Figure 4 As shown, for convenient near-field communication, the motherboard 34 and antenna 35 are located at opposite ends of the lower cover 20, respectively. Preferably, the battery 32 is detachably fixed to the bracket 32 ​​by bolts. Specifically, the bracket 32 ​​is made of sheet metal by cutting and bending, and includes a body 321, at least two limiting plates 322, and a fixing seat 323. The limiting plates 322 and the fixing seat 323 are branches formed by bending the remaining parts after cutting from both ends of the body 321. The limiting plates 322 located at both ends of the body 321 together with the body 321 form an internal cavity for accommodating the battery 31. The fixing seats 323 are located at both ends of the body 321 and extend in a direction away from the body 321.

[0039] Optionally, after the limiting plate 322 is cut from the body 321, the remaining portion is bent upward to form a branch extending in a direction perpendicular to the body 321; after the fixing seat 323 is cut from both ends of the body 321, the remaining portion is bent downward to form a branch spaced apart from the body 321 and extending parallel to the horizontal plane of the body 321 in a direction away from the body 321; furthermore, in order to achieve stable fixing of the battery 31, a bolt is rotatably provided at the end of the limiting plate 322 away from the body 321. Thus, by providing a bolt at the end of the limiting plate away from the body, the battery placed in the storage space between the limiting plate and the body is restricted and fixed, thereby reliably fixing the battery to the bracket.

[0040] To facilitate the fixing of the bracket 32 ​​and the lower cover 20, the end of the fixing base 323 away from the body 321 is machined with a fixing hole 324 for easy bolt fixing. Preferably, for ease of installation and maintenance, the fixing hole 324 is a U-shaped hole with an opening at the end away from the body 321.

[0041] Optionally, to ensure the watertightness of the storage cavity formed by the upper cover 10 and the lower cover 20, and to ensure the normal operation and service life of the internal electronic components, a waterproof button 33 is also provided on the end side of the sensor 50. The waterproof button 33 is located between the bracket 32 ​​and the lower cover 20. Thus, through the tight connection between the bracket 32 ​​and the lower cover 20, the waterproof button 33 is ensured to abut against the inside of the storage cavity formed by the upper cover 10 and the lower cover 20 of the sensor 50, thereby preventing the possibility of water accidentally entering through the gap between the sensor 50 and the lower cover 20.

[0042] In the embodiments of this application, such as Figure 5 As shown, a method for installing a fire hydrant backpack is provided. The fire hydrant backpack 200 is installed with the fire hydrant 100 through fixing chains, cable ties, clamps, etc. One end of the connecting pipe 300 is connected to the connector 40, and the other end is connected to the internal sensing connection of the fire hydrant 100 through the transmitter 400. Thus, the fixed status of the fire hydrant backpack 200 can be monitored by the sensor 50 installed between the lower cover 20 and the fire hydrant 100. Once the fire hydrant backpack is loosened or maliciously disassembled, the sensor can trigger an alarm mechanism and send an alarm to the cloud platform. The transmitter 400 can record relevant parameters inside the fire hydrant 100 in real time and convert them into electrical signals. Then, through internal components, it can be networked to realize the Internet of Things transformation of the traditional fire hydrant 100.

[0043] Preferably, the transmitter 400 is one or a combination of pressure transmitter, flow sensor and temperature sensor; thus, the combination of sensors can realize the collection and monitoring of different parameters inside the fire hydrant.

[0044] In another embodiment of this application, such as Figure 6 As shown, the difference from the above embodiment is that the lower cover 20 is integrally formed with the shell of the fire hydrant 100. Therefore, the existing fire hydrant 100 can be modified simply by replacing the shell of the fire hydrant 100.

[0045] Furthermore, the mainboard in this application may consist of a PLC, an encoder, etc.

[0046] Furthermore, the heater mentioned above is preferably an electromagnetic heater, which enables automated and intelligent control of the heating effect.

[0047] In addition, it includes a control system electrically connected to each sensor, as well as cables and other auxiliary equipment for connection. For example, control switches, etc., should be readily conceived by those skilled in the art, and will not be described further here.

[0048] The multi-functional fire extinguisher provided in the above embodiments of this application has at least the following characteristics:

[0049] The multi-functional fire extinguisher provided in this embodiment features paired second through holes that correspond to each other, facilitating the fixing and disassembly of the fire hydrant. Fixing chains, cable ties, clamps, or other fasteners pass through these second through holes, allowing for detachable fixing to the fire hydrant. This extremely convenient method of binding the fire extinguisher backpack to existing fire hydrants achieves IoT connectivity without requiring modifications to the existing hydrant, enabling wireless communication and positioning functions. This enhances intelligent monitoring and IoT management of the fire hydrant, reduces operating costs, and improves the safety of public life and property. The extinguisher is further enhanced by having holes located on the side of the side plate away from the connector. The second transparent cover allows for identification and reading of labels built into the side panel without disassembly; it enables traceability of each hydrant through digital barcode recognition; a sensor positioned between the lower cover and the fire hydrant can monitor the fixation status of the fire backpack, triggering an alarm mechanism and sending a notification to the cloud platform if the backpack becomes loose or is maliciously disassembled; or, through the built-in sensor modes, it can achieve different functions, such as automatically alarming upon impact based on tilt angle and frequency of external force taps, and initiating Bluetooth interaction upon regular taps. Bluetooth interaction functions include, but are not limited to, parameter adjustment, firmware upgrades, and self-learning of installation status.

[0050] The above description is merely a specific embodiment of this utility model. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should all be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hydrant backpack, characterized by, The application relates to a fire hydrant backpack, which comprises a shell and an internal component, the shell comprises a detachable and sealed upper cover (10) and a lower cover (20), the upper cover (10) and the lower cover (20) are closed to form a receiving cavity for accommodating the internal component, and a connector (40) is arranged through the receiving cavity, one end of the connector (40) is electrically connected with the internal component, and the other end is arranged in a perceivable manner with a fire hydrant (100). The internal component comprises a battery (31), a support (32), a mainboard (34) and an antenna (35), wherein the battery (31) is fixed in an internal cavity of the lower cover (20) through the support (32); the mainboard (34) and the antenna (35) are detachably fixed in the internal cavity of the lower cover (20) and are electrically connected with the battery (31).

2. The hydrant backpack of claim 1, wherein, The application further comprises a sensor (50) arranged between the lower cover (20) and the fire hydrant (100), one end of the sensor (50) penetrates through the lower cover (20) and is electrically connected with the internal component, and the other end is arranged in an internal sensing manner with the fire hydrant (100).

3. The hydrant backpack of claim 1, wherein, The lower cover (20) comprises a side plate (21) and a bottom plate (22), the side plate (21) is a receiving cavity formed by connecting the head and tail of a plate material, and the bottom plate (22) is arranged in the cavity of the side plate (21) and is sealingly connected with the side plate (21).

4. The hydrant backpack of claim 3, wherein, The application further comprises a skirt (23) arranged at the connecting end side of the side plate (21) and the bottom plate (22) and extending away from the bottom plate (22).

5. The hydrant backpack of claim 4, wherein, The short sides of the skirt (23) are processed into concave arc surfaces, and the long sides of the skirt (23) are arranged in a straight line.

6. The hydrant backpack of claim 5, wherein, The lower cover (20) further comprises a label (27) arranged in the side plate (21) and moving together with the side plate (21).

7. The hydrant backpack of claim 3, wherein, The support (32) comprises a body (321), at least two limiting plates (322) and a fixing seat (323), wherein the limiting plates (322) and the fixing seat (323) are branches formed by bending the residual parts after cutting the two end sides of the body (321); the limiting plates (322) arranged at the two end sides of the body (321) together with the body (321) form an internal cavity for accommodating the battery (31); and the fixing seat (323) is arranged at the two ends of the body (321) and extends away from the body (321).

8. The hydrant backpack of claim 7, wherein, The limiting plates (322) are branches extending in a direction perpendicular to the body (321) by bending the residual parts upward after cutting the body (321); and the fixing seat (323) is a branch arranged in a spaced manner with the body (321) and extending in a direction away from the body (321) and parallel to the horizontal plane of the body (321) by bending the residual parts downward after cutting the two end sides of the body (321).

9. The hydrant backpack of claim 2, wherein, The application further comprises a waterproof button (33) arranged at the end side of the sensor (50), and the waterproof button (33) is located between the support (32) and the lower cover (20).

10. A hydrant characterized by, The application further comprises the fire hydrant backpack according to any one of claims 1-9, and the fire hydrant backpack is integrally formed with the shell of the fire hydrant (100) or is arranged in a separate manner.

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