Water consumption monitoring structure and method for underground fire hydrant

Abstract

The invention discloses a water consumption monitoring structure and method for an underground fire hydrant. The water consumption monitoring structure comprises an adapter, an electromagnetic water meter and a tooth buckle adapter. One end of the adapter is coaxially and fixedly connected with the water outlet I of the fire hydrant main body, and the other end of the adapter is coaxially and fixedly connected with one end of the electromagnetic water meter; one end of the tooth buckle adapter is coaxially and fixedly connected with the electromagnetic water meter, and the other end is fixedly connected with the blank cap; the electromagnetic water meter can be used for monitoring the pressure and the water outlet flow of the underground fire hydrant and acquiring the pressure data and the water outlet flow data I of the water outlet I; a communication module is arranged in the electromagnetic water meter and is used for communicating the electromagnetic water meter with an external background integrated management system; the electromagnetic water meter can transmit pressure data and water outlet flow data I to the background comprehensive management system through the communication module. The device can be directly installed on the underground fire hydrant, monitoring of water consumption of the underground fire hydrant is achieved, and the large-area updating efficiency of the intelligent fire hydrant is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire safety, and in particular relates to a water use monitoring structure and method for underground fire hydrants. Background Art

[0002] Urban safety is an important development goal and concept in our country. Fire safety is an important part of urban safety. As an important part of urban fire safety, the reliability of fire hydrants directly affects the efficiency of fire rescue. Therefore, it is necessary to monitor the fire hydrants in the city and understand the water usage of fire hydrants in time to prevent it from affecting rescue and wasting water resources.

[0003] In southern my country, fire hydrants are mostly installed on the ground, which makes it easy to replace them with smart fire hydrants. However, in northern my country, in order to prevent fire hydrants from being damaged by impact and cracking in winter, fire hydrants are generally installed in underground wells. The lower part of the fire hydrant is buried underground, leaving only the upper water connection. Replacing all underground fire hydrants with smart fire hydrants will affect traffic and cause large-scale water outages. On the other hand, it is not convenient for construction, and the cost is high and the efficiency is low. Summary of the invention

[0004] In view of this, the present invention provides a water usage monitoring structure for underground fire hydrants, which can be directly installed on underground fire hydrants to monitor the water usage of underground fire hydrants and improve the large-area renewal efficiency of fire hydrants.

[0005] The present invention is achieved through the following technical solutions:

[0006] A water monitoring structure for an underground fire hydrant, the underground fire hydrant comprising a fire hydrant body, a threaded joint and a blind cover; the fire hydrant body is provided with a water outlet I; the threaded joint is provided at the water outlet I of the fire hydrant body, and the blind cover is threadedly connected with the threaded joint;

[0007] The water use monitoring structure includes an adapter, an electromagnetic water meter and a threaded adapter;

[0008] One end of the adapter is coaxially fixedly connected to the water outlet I of the fire hydrant body, and the other end is coaxially fixedly connected to one end of the electromagnetic water meter; one end of the threaded buckle adapter is coaxially fixedly connected to the electromagnetic water meter, and the other end is fixedly connected to the blind cover;

[0009] The electromagnetic water meter can monitor the pressure and water flow of underground fire hydrants and obtain the pressure data and water flow data of outlet Ⅰ;

[0010] The electromagnetic water meter is provided with a communication module for communicating with the external background integrated management system;

[0011] The electromagnetic water meter can transmit the pressure data and water flow data I to the background integrated management system through the communication module.

[0012] A water use monitoring method for underground fire hydrants, based on a water use monitoring structure for underground fire hydrants, wherein the electromagnetic water meter is also provided with a central processing module, a pressure acquisition module, a flow acquisition module and an abnormal alarm module;

[0013] The pressure acquisition module, flow acquisition module, abnormal alarm module and communication module can communicate with the central processing module respectively;

[0014] The pressure acquisition module collects the aforementioned pressure data of the water outlet I and transmits it to the central processing module;

[0015] The flow collection module collects the aforementioned water outflow data I flowing out of the underground fire hydrant from the water outlet I, and transmits it to the central processing module;

[0016] The central processing module transmits the pressure data and water flow data I to the external background integrated management system through the communication module;

[0017] The central processing module also determines the operating status of the fire hydrant based on the pressure data and water flow data.

[0018] When the operation status is normal, the central processing module transmits the normal operation status data to the external background integrated management system through the communication module;

[0019] When the operating status is abnormal, the central processing module transmits a control signal to the abnormal alarm module, and the abnormal alarm module alarms; at the same time, the central processing module also transmits the abnormal operating status data to the external background integrated management system.

[0020] Beneficial effects:

[0021] (1) The present invention can be directly installed at the outlet of an existing underground fire hydrant to monitor the pressure and water flow of the underground fire hydrant and transmit the information to the background integrated management system, so as to quickly monitor the water use of the underground fire hydrant, improve the large-scale intelligent monitoring and updating efficiency of fire hydrants, and avoid the impact on production and life such as transportation.

[0022] (2) The split antenna of the present invention extends upward from the bottom of the underground well and is fixedly arranged at the wellhead to ensure smooth and reliable communication of the electromagnetic water meter.

[0023] (3) The electromagnetic water meter of the present invention is provided with a positioning module, which facilitates the clear distribution and positioning of fire hydrants.

[0024] (4) The water use monitoring structure provided by the present invention utilizes the threaded joint of an underground fire hydrant. After the water use monitoring structure is assembled, it can be screwed into the fire hydrant body using a thread, thereby improving the installation efficiency of the water use monitoring structure.

[0025] (5) The present invention provides a water use monitoring structure, which connects the adapter and the electromagnetic water meter through a clamp I, and connects the threaded adapter and the electromagnetic water meter through a clamp II; it can realize the rapid assembly of the water use monitoring structure and further improve the installation efficiency of the water use monitoring structure.

[0026] (6) The water use monitoring structure provided by the present invention utilizes an adapter to replace the threaded joint on the underground fire hydrant, which can minimize the size of the water use monitoring structure to prevent the water use monitoring structure from being too long. In cold areas, water inside the water use monitoring structure may freeze, thereby affecting rescue efficiency.

[0027] (7) The present invention provides a method for monitoring water use of underground fire hydrants. The electromagnetic water meter is also provided with a central processing module, an abnormal alarm module, and a positioning module. The central processing module can determine the operating status of the fire hydrant based on the pressure data and the water flow data. The abnormal alarm module can alarm when the water flow of the fire hydrant is abnormal, so as to facilitate timely troubleshooting of the fire hydrant and ensure fire safety.

[0028] (8) Underground fire hydrants in the north are generally provided with two water outlets. The present invention provides a water usage monitoring method for underground fire hydrants. Only a water usage and pressure monitoring device is provided on one water outlet of the fire hydrant. The flow rate of all water outlets of the fire hydrant can be monitored. There is no need to provide monitoring water meters at all water outlets of the fire hydrant, which can save costs and improve the updating efficiency of smart fire hydrants.

[0029] (9) Underground fire hydrants in the north are generally provided with two water outlets. The present invention provides a water usage monitoring method for underground fire hydrants. Only a water usage and pressure monitoring device is provided on one water outlet of the fire hydrant. The status of all water outlets of the fire hydrant can be monitored. There is no need to provide monitoring water meters at all water outlets of the fire hydrant, which can save costs and improve the updating efficiency of smart fire hydrants. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the structural diagram of underground fire hydrant;

[0031] Figure 2 A schematic diagram of an underground fire hydrant equipped with a water use monitoring structure installed in an underground well;

[0032] Figure 3 This is an axonometric view of an underground fire hydrant equipped with water consumption monitoring structure I;

[0033] Figure 4It is a front view of an underground fire hydrant equipped with water use monitoring structure Ⅰ;

[0034] Figure 5 It is a side view of an underground fire hydrant equipped with water use monitoring structure I;

[0035] Figure 6 This is the axonometric drawing of the underground fire hydrant equipped with water consumption monitoring structure II;

[0036] Figure 7 It is a front view of an underground fire hydrant equipped with a water use monitoring structure II;

[0037] Figure 8 It is a side view of an underground fire hydrant equipped with a water use monitoring structure II;

[0038] Fig. 9 This is the axonometric drawing of the underground fire hydrant equipped with water monitoring structure III;

[0039] Fig.10 It is a front view of an underground fire hydrant equipped with water use monitoring structure III;

[0040] Fig.11 It is a side view of an underground fire hydrant equipped with a water usage monitoring structure III.

[0041] Among them, 01-fire hydrant body, 02-threaded joint, 03-cover, 04-valve, 05-water supply branch pipe, 06-water outlet Ⅰ, 07-water outlet Ⅱ;

[0042] 1-water use monitoring structure Ⅰ, 11-adapter Ⅰ, 12-electromagnetic water meter Ⅰ, 13-threaded adapter Ⅰ;

[0043] 2-water use monitoring structure II, 21-adapter II, 22-electromagnetic water meter II, 23-threaded adapter II, 24-clamp I, 25-clamp II;

[0044] 3-water use monitoring structure III, 31-adapter III, 32-electromagnetic water meter III, 33-threaded adapter III, 34-clamp III, 35-clamp IV;

[0045] 4-Split antenna. DETAILED DESCRIPTION

[0046] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0047] Example 1

[0048] This embodiment provides a water use monitoring structure for underground fire hydrants, which is installed at the water outlet of the underground fire hydrant; see the attached Figure 1-3 The underground fire hydrant includes a fire hydrant body 01, a threaded joint 02 and a cover 03;

[0049] The bottom of the fire hydrant body 01 is connected to the water supply branch pipe 05 through a valve 04. A water outlet Ⅰ06 is provided on the top of the fire hydrant body 01. A threaded joint 02 is provided at the water outlet Ⅰ06 of the fire hydrant body 01 for connecting a fire hose or other equipment. A threaded joint 02 is provided inside. When the underground fire hydrant is not in use, the cover 03 is threadedly connected to the threaded joint 02 for sealing the water outlet Ⅰ06 of the underground fire hydrant.

[0050] The water use monitoring structure includes an adapter, an electromagnetic water meter and a threaded adapter;

[0051] One end of the adapter is coaxially fixedly connected to the water outlet Ⅰ06 of the fire hydrant body 01, and the other end is coaxially fixedly connected to one end of the electromagnetic water meter; one end of the threaded buckle adapter is coaxially fixedly connected to the electromagnetic water meter, and the other end is fixedly connected to the blind cover 03;

[0052] The electromagnetic water meter can monitor the pressure and water flow of underground fire hydrants, obtain the pressure data and water flow data of outlet Ⅰ06, and transmit the pressure data and water flow data to the background integrated management system.

[0053] The present embodiment provides a water usage monitoring structure that can be directly installed at the outlet of an existing underground fire hydrant to monitor the pressure, flow and status of the underground fire hydrant, so as to quickly monitor the water usage of the underground fire hydrant, improve the efficiency of large-scale urban renewal of smart fire hydrants, and avoid the impact on production and life such as transportation.

[0054] In one embodiment, see the attached Figure 2 A communication module is provided in the electromagnetic water meter for communicating with an external background integrated management system. The communication module also includes a split antenna 4 arranged outside the electromagnetic water meter. The split antenna 4 extends upward from the bottom of the underground well and is fixed at the wellhead to ensure smooth and reliable communication of the electromagnetic water meter.

[0055] In one embodiment, a positioning module is provided in the electromagnetic water meter, and the positioning module collects positioning information data of underground fire hydrants. The electromagnetic water meter can transmit the positioning information data to the background integrated management system.

[0056] It should be noted that the electromagnetic water meter can be directly modified in structure based on the electromagnetic water meter on the market with pressure monitoring function, flow monitoring function and communication function.

[0057] Working principle:

[0058] A water use monitoring structure is installed between the blind cover 03 and the fire hydrant body 01 of the underground fire hydrant. The adapter at one end of the water use monitoring structure is connected to the water outlet Ⅰ06. An electromagnetic water meter is provided in the middle, and the threaded adapter at the other end is connected to the blind cover 03. The electromagnetic water meter is used to monitor the pressure and flow of the underground fire hydrant, and the relevant data is transmitted to the background integrated management system.

[0059] The water use monitoring structure is easy to install, can improve the efficiency of large-scale renewal of fire hydrants, and avoid the impact on production and life such as transportation.

[0060] Example 2

[0061] This embodiment proposes a specific embodiment of a water use monitoring structure based on embodiment 1, such as Figures 3 to 5 As shown, the water use monitoring structure is water use monitoring structure Ⅰ1, the adapter is adapter Ⅰ11, the electromagnetic water meter is electromagnetic water meter Ⅰ12, and the threaded buckle adapter is threaded buckle adapter Ⅰ13;

[0062] One end of the adapter Ⅰ11 is provided with an external thread, which is threadedly connected to the threaded joint 02 of the fire hydrant body 01, and the other end is provided with a flange; both ends of the electromagnetic water meter Ⅰ12 are provided with flanges; one end of the threaded joint adapter Ⅰ13 is provided with a flange, and the other end is provided with an internal thread and a threaded joint;

[0063] The adapter Ⅰ11 is connected to one end of the electromagnetic water meter Ⅰ12 through a flange; the threaded buckle adapter Ⅰ13 is connected to the other end of the electromagnetic water meter Ⅰ12 through a flange; the cover 03 is threadedly connected to the threaded buckle adapter Ⅰ13; the threaded buckle on the threaded buckle adapter Ⅰ13 is used to connect a fire hose or other equipment.

[0064] The present embodiment provides a water use monitoring structure, which utilizes the threaded joint 02 of an underground fire hydrant. After the water use monitoring structure Ⅰ1 is assembled, it can be screwed into the fire hydrant body 01 using threads, thereby improving the installation efficiency of the water use monitoring structure.

[0065] Example 3

[0066] This embodiment proposes a specific embodiment of a water use monitoring structure based on embodiment 1, such as Figures 6 to 8 As shown, the water use monitoring structure is the water use monitoring structure II2, the adapter is the adapter II21, the electromagnetic water meter is the electromagnetic water meter II22, and the threaded buckle adapter is the threaded buckle adapter II23;

[0067] One end of the adapter II 21 is provided with an external thread, which is threadedly connected to the threaded joint 02 of the fire hydrant body 01; the other end of the adapter II 21 is provided with an outward-turned edge;

[0068] Both ends of the electromagnetic water meter II 22 are provided with outward-turned edges; one end of the threaded buckle adapter II 23 is provided with an outward-turned edge, and the other end is provided with an internal thread and a threaded buckle;

[0069] The outward-turned edge of the adapter II 21 is coaxially opposite to the outward-turned edge of one end of the electromagnetic water meter II 22, and is fixedly connected by a clamp I 24; the outward-turned edge of the threaded buckle adapter II 23 is coaxially opposite to the outward-turned edge of the other end of the electromagnetic water meter II 22, and is fixedly connected by a clamp II 25; the blind cover 03 is threadedly connected to the threaded buckle adapter II 23; the threaded buckle on the threaded buckle adapter II 23 is used to connect a fire hose or other equipment.

[0070] The present embodiment provides a water use monitoring structure, which connects the adapter II 21 and the electromagnetic water meter II 22 via a clamp I 24, and connects the threaded adapter II 23 and the electromagnetic water meter II 22 via a clamp II 25; it can realize the rapid assembly of the water use monitoring structure II 2, and further improve the installation efficiency of the water use monitoring structure.

[0071] Example 4

[0072] This embodiment proposes a specific embodiment of a water use monitoring structure based on embodiment 1, such as Figures 9-11 As shown, the water use monitoring structure is the water use monitoring structure III3, the adapter is the adapter III31, the electromagnetic water meter is the electromagnetic water meter III32, and the threaded buckle adapter is the threaded buckle adapter III33;

[0073] The adapter III 31 replaces the threaded joint 02 and is coaxially fixedly arranged at the water outlet I 06 of the fire hydrant body 01. The fixed arrangement can be welded or snap-fitted.

[0074] The adapter III31 is provided with an outward-turned edge, and both ends of the electromagnetic water meter III32 are provided with outward-turned edges; one end of the threaded buckle adapter III33 is provided with an outward-turned edge, and the other end is provided with an internal thread and a threaded buckle;

[0075] The outward-turned edge of the adapter III31 is coaxially opposite to the outward-turned edge of one end of the electromagnetic water meter III32, and is fixedly connected by a clamp III34; the outward-turned edge of the threaded buckle adapter III33 is coaxially opposite to the outward-turned edge of the other end of the electromagnetic water meter III32, and is fixedly connected by a clamp IV35; the blind cover 03 is threadedly connected to the threaded buckle adapter III33; the threaded buckle on the threaded buckle adapter III33 is used to connect a fire hose or other equipment.

[0076] This embodiment uses an adapter III 31 to replace the threaded joint 02 on the underground fire hydrant, which can minimize the size of the water use monitoring structure to prevent the water use monitoring structure from being too long. In cold areas, water in the water use monitoring structure freezes and affects rescue efficiency.

[0077] Example 5

[0078] This embodiment provides a method for monitoring water usage of underground fire hydrants based on any one of the embodiments 1-4. The method is as follows:

[0079] The electromagnetic water meter is also equipped with a central processing module, a pressure collection module, a flow collection module and an abnormal alarm module;

[0080] The pressure acquisition module, flow acquisition module, abnormal alarm module, positioning module and communication module can communicate with the central processing module respectively;

[0081] The pressure acquisition module collects the aforementioned pressure data of the water outlet Ⅰ06 and transmits it to the central processing module;

[0082] The flow collection module collects the aforementioned water outflow flow data flowing out of the underground fire hydrant from the water outlet Ⅰ06, and makes the water outflow flow data be the water outflow flow data Ⅰ, and transmits it to the central processing module;

[0083] The positioning module collects the positioning information data of the underground fire hydrant and transmits it to the central processing module;

[0084] The central processing module transmits the pressure data, water flow data and positioning information data to the external background integrated management system through the communication module;

[0085] The central processing module also determines the operating status of the fire hydrant based on the pressure data and water flow data. When the operating status is normal, the central processing module transmits the normal operating status data to the external background integrated management system through the communication module; when the operating status is abnormal, the central processing module transmits the control signal to the abnormal alarm module, and the abnormal alarm module alarms; at the same time, the central processing module also transmits the abnormal operating status data to the external background integrated management system.

[0086] In this embodiment, the electromagnetic water meter is also provided with a central processing module, an abnormal alarm module, and a positioning module. The central processing module can determine the operating status of the fire hydrant based on the pressure data and the water flow data. The abnormal alarm module can alarm when the water flow from the fire hydrant is abnormal. The positioning module can locate the position of the fire hydrant in time, so as to facilitate timely troubleshooting of the fire hydrant and ensure fire safety.

[0087] Furthermore, the central processing module can also calculate other water outlets on the fire hydrant (such as attached Figure 1 The specific method is that the central processing module calculates the approximate water output as the water output flow data II according to the starting pressure data value at the time of water output and the pressure change value and change speed during the process of flow stabilization, combined with the pressure change time, and transmits the water output flow data II to the background integrated management system through the communication module.

[0088] Furthermore, a model for establishing the correlation between pressure change and flow rate based on big data analysis can be preset in the central processing module, and the water flow rate data II can be calculated based on the model.

[0089] The present embodiment provides a method for monitoring water use and status of underground fire hydrants with dual water outlets in the north. By setting a water use and pressure monitoring device on only one water outlet of the fire hydrant, the flow rate of all water outlets of the fire hydrant can be monitored. There is no need to set monitoring water meters at all water outlets of the fire hydrant, which can save costs and improve the update efficiency of smart fire hydrants.

[0090] Furthermore, the method by which the central processing module determines the operating status of the fire hydrant according to the pressure data and the water flow data I is:

[0091] The central processing module compares the received pressure data with the preset threshold:

[0092] When the pressure data is not less than the threshold value and the water flow data is equal to zero, the central processing module determines that the operation status of the fire hydrant is normal;

[0093] Except for the period of time when a fire occurs and the normal use state is in progress, when the pressure data is less than the threshold value and the water flow data is greater than zero, the central processing module determines that water is flowing out of the water outlet Ⅰ06, and the central processing module determines that the operation state of the fire hydrant is abnormal;

[0094] Except for the period of time when a fire occurs and the water flow rate is equal to zero, other water outlets on the fire hydrant may discharge water, such as the attached Figure 1 The water outlet Ⅱ07 in the fire hydrant, or there is a problem with the water supply to the fire hydrant, at this time the central processing module determines that the operating status of the fire hydrant is abnormal.

[0095] In this embodiment, only one water outlet of the fire hydrant needs to be provided with a water use monitoring structure, so that the status of all water outlets of the fire hydrant can be monitored. The water outlet status of the corresponding water outlet can be positively judged, and whether other water outlets are abnormal can be judged. There is no need to set monitoring water meters at all water outlets of the fire hydrant, which can save costs and improve the update efficiency of the smart fire hydrant.

[0096] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water use monitoring structure for an underground fire hydrant, the underground fire hydrant comprising a fire hydrant body, a threaded joint and a blind cover; the fire hydrant body is provided with a water outlet I; the threaded joint is provided at the water outlet I of the fire hydrant body, and the blind cover is threadedly connected with the threaded joint; It is characterized in that The water use monitoring structure includes an adapter, an electromagnetic water meter and a threaded adapter; One end of the adapter is coaxially fixedly connected to the water outlet I of the fire hydrant body, and the other end is coaxially fixedly connected to one end of the electromagnetic water meter; one end of the threaded buckle adapter is coaxially fixedly connected to the electromagnetic water meter, and the other end is fixedly connected to the blind cover; The electromagnetic water meter can monitor the pressure and water flow of underground fire hydrants and obtain the pressure data and water flow data of outlet Ⅰ; The electromagnetic water meter is provided with a communication module for communicating with the external background integrated management system; The electromagnetic water meter can transmit the pressure data and water flow data I to the background integrated management system through the communication module.

2. A water use monitoring structure for underground fire hydrants as claimed in claim 1, characterized in that: The communication module also includes a split antenna arranged outside the electromagnetic water meter. The split antenna extends upward from the bottom of the underground well and is fixedly arranged at the wellhead.

3. A water use monitoring structure for underground fire hydrants as claimed in claim 1, characterized in that: The electromagnetic water meter is equipped with a positioning module, which collects the positioning information data of the underground fire hydrant. The electromagnetic water meter can transmit the positioning information data to the background integrated management system.

4. A water use monitoring structure for underground fire hydrants as claimed in any one of claims 1 to 3, characterized in that: One end of the adapter is provided with an external thread, which is threadedly connected to the threaded joint of the fire hydrant body, and the other end is provided with a flange; both ends of the electromagnetic water meter are provided with flanges; one end of the threaded adapter is provided with a flange, and the other end is provided with an internal thread and a threaded joint; The adapter is connected to one end of the electromagnetic water meter through a flange; the threaded buckle adapter is connected to the other end of the electromagnetic water meter through a flange; and the blind cover is threadedly connected to the threaded buckle adapter.

5. A water use monitoring structure for underground fire hydrants as claimed in any one of claims 1 to 3, characterized in that: One end of the adapter is provided with an external thread, which is threadedly connected to the threaded joint of the fire hydrant body; the other end of the adapter is provided with an outward-turned edge; Both ends of the electromagnetic water meter are provided with outward-turned edges; one end of the threaded buckle adapter is provided with an outward-turned edge, and the other end is provided with an internal thread and a threaded buckle; The outward-turned edge of the adapter is coaxially opposite to the outward-turned edge of one end of the electromagnetic water meter, and is fixedly connected by clamp I; the outward-turned edge of the threaded buckle adapter is coaxially opposite to the outward-turned edge of the other end of the electromagnetic water meter, and is fixedly connected by clamp II; the blind cover is threadedly connected to the threaded buckle adapter.

6. A water use monitoring structure for underground fire hydrants as claimed in any one of claims 1 to 3, characterized in that: The adapter replaces the threaded joint and is coaxially fixed at the water outlet I of the fire hydrant body; The adapter is provided with an outward-turned edge, and both ends of the electromagnetic water meter are provided with outward-turned edges; one end of the threaded buckle adapter is provided with an outward-turned edge, and the other end is provided with an internal thread and a threaded buckle; The outward-turned edge of the adapter is coaxially opposite to the outward-turned edge of one end of the electromagnetic water meter, and is fixedly connected by a clamp; the outward-turned edge of the threaded buckle adapter is coaxially opposite to the outward-turned edge of the other end of the electromagnetic water meter, and is fixedly connected by a clamp IV; the blind cover is threadedly connected to the threaded buckle adapter.

7. A method for monitoring water use of underground fire hydrants, based on a water use monitoring structure for underground fire hydrants according to any one of claims 1 to 6, characterized in that: The electromagnetic water meter is also equipped with a central processing module, a pressure collection module, a flow collection module and an abnormal alarm module; The pressure acquisition module, flow acquisition module, abnormal alarm module and communication module can communicate with the central processing module respectively; The pressure acquisition module collects the aforementioned pressure data of the water outlet I and transmits it to the central processing module; The flow collection module collects the aforementioned water outflow data I flowing out of the underground fire hydrant from the water outlet I, and transmits it to the central processing module; The central processing module transmits the pressure data and water flow data I to the external background integrated management system through the communication module; The central processing module also determines the operating status of the fire hydrant based on the pressure data and water flow data. When the operation status is normal, the central processing module transmits the normal operation status data to the external background integrated management system through the communication module; When the operating status is abnormal, the central processing module transmits a control signal to the abnormal alarm module, and the abnormal alarm module alarms; at the same time, the central processing module also transmits the abnormal operating status data to the external background integrated management system.

8. A method for monitoring water usage of underground fire hydrants as claimed in claim 7, characterized in that: The central processing module calculates the approximate water output as water output flow data II based on the initial pressure data value at the time of water output, the pressure change value and change speed during the process of flow stabilization, and the duration of pressure change, and transmits the water output flow data II to the background integrated management system through the communication module.

9. A method for monitoring water usage of underground fire hydrants as claimed in claim 8, characterized in that: A model for establishing the correlation between pressure change and flow rate based on big data analysis can be preset in the central processing module, and the water flow rate data II can be calculated based on the model.

10. A method for monitoring water usage of underground fire hydrants as claimed in claim 7, characterized in that: The method by which the central processing module determines the operating status of the fire hydrant based on the pressure data and the water flow data I is: The central processing module compares the received pressure data with the preset threshold: When the pressure data is not less than the threshold value and the water flow data I is equal to zero, the central processing module determines that the operation status of the fire hydrant is normal; Except for the period of time when a fire occurs and the normal use state is in progress, when the pressure data is less than the threshold value and the water flow data I is greater than zero, the central processing module determines that water is flowing out of the water outlet I, and the central processing module determines that the operation state of the fire hydrant is abnormal; Except for the period of normal use when a fire occurs, when the pressure data is less than the threshold and the water flow data I is equal to zero, the central processing module determines that the operation status of the fire hydrant is abnormal.

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