Integrated flow measurement fire-fighting device

By installing an integrated flow measurement and fire-fighting device with components such as flow meters and ultrasonic transducers inside the fire hydrant well, the problems of difficult flow measurement in urban water supply networks and unstable fire water flow monitoring have been solved. This has enabled real-time and accurate flow monitoring, reduced renovation costs, and maintained the functional integrity of fire hydrants.

CN224119637UActive Publication Date: 2026-04-14PIPE NETWORK MANAGEMENT BRANCH OF BEIJING WATERWORKS GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PIPE NETWORK MANAGEMENT BRANCH OF BEIJING WATERWORKS GRP CO LTD
Filing Date
2025-04-07
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

The existing urban water supply network has difficulties in flow measurement, increasing the number of flow measurement wells is difficult and costly, fire water flow monitoring affects fire fighting operations and is unstable, and fire hydrant renovation is costly.

Method used

An integrated flow measurement fire-fighting device was designed, including the fire hydrant body and the monitoring body. It uses components such as flow meters, ultrasonic transducers and pressure sensors, and is directly installed in the fire hydrant well to monitor the flow of water supply network and fire water flow, while maintaining the structural integrity of the fire hydrant.

Benefits of technology

It enables real-time monitoring of water supply network volume and fire water flow, ensuring that fire-fighting operations are not affected, reducing renovation costs, improving measurement accuracy and stability, and also taking into account the function of fire hydrants.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model discloses an integrated flow measuring and fire fighting device, and belongs to the technical field of metering equipment. The fire hydrant comprises a fire hydrant main body, the fire hydrant main body comprises a hydrant body, the side face of the hydrant body is provided with a water outlet and a water suction port which are buckled through a blank cap in threaded connection, the middle position of the hydrant body is provided with a valve rod penetrating into the bottom of the hydrant body, the valve rod abuts against a valve clack buckled at a valve seat, and the top of the valve rod is connected with a starting rod arranged outside the hydrant body; the monitoring main body comprises a main body pipe fitting, an elbow connecting seat is arranged on the side surface of the main body pipe fitting, a valve seat of the bolt body is mounted on the elbow connecting seat, a flow meter is arranged in the middle of the main body pipe fitting, a detection end exceeds the bottommost surface of the main body pipe fitting, the flow meter extends upwards out of the main body pipe fitting, and a data connector is arranged at the top of the flow meter. By arranging the lateral monitoring structure, the monitoring structure directly monitors the flow of the water supply pipe, and the purposes that the water volume of the water supply pipe network and the fire-fighting water flow can be monitored in real time, fire-fighting work is not affected, and the overall structure of the fire hydrant is not changed are achieved.
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Description

Technical Field

[0001] This disclosure relates to the field of metering equipment technology, specifically to an integrated flow measurement and fire suppression device. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of this disclosure and is not necessarily an admission or implication in any way that such information constitutes related technology that is already known to those skilled in the art.

[0003] Flow measurement in urban water supply networks is achieved by installing electromagnetic flowmeters in "flow measurement wells." Statistics show that the number of existing "flow measurement wells" is limited (20 wells). Increasing the number of "flow measurement wells" could indeed achieve the goal of network flow measurement. However, increasing the number is not easy; from site selection to completion, it requires a huge investment of manpower and resources.

[0004] To ensure a stable urban water supply, more urban water supply network flow monitoring equipment needs to be installed. However, the existing urban water supply network suffers from several problems, including the inability to determine the flow rate, velocity, and pressure within the pipes. Adding "flow measurement wells" as mentioned above is extremely difficult. Achieving urban water volume measurement, i.e., zoned flow measurement, currently uses insertion electromagnetic flowmeters. However, suitable installation environments are limited, and expanding installation locations is difficult and costly. Furthermore, current fire water flow monitoring typically involves installing the detection equipment at one of the fire hydrant outlets. This design has drawbacks: only one outlet can be used during firefighting operations, and the fire water pressure cannot be accurately monitored, affecting firefighting efforts. Moreover, adding another outlet to an existing fire hydrant for pressure monitoring would also result in unstable monitoring results during firefighting operations, and adding an extra outlet would increase manufacturing costs and potentially fail to meet required standards. Summary of the Invention

[0005] Therefore, this disclosure provides an integrated flow measurement fire suppression device to solve the problems in related technologies, such as the difficulty in measuring the flow of urban water supply networks and the high cost of upgrading existing measurement wells.

[0006] To achieve the goal of obtaining a fire monitoring device capable of real-time monitoring of water supply network volume and fire water flow without affecting fire fighting operations or altering the overall structure of fire hydrants, the embodiments disclosed herein provide the following technical solutions:

[0007] In a first aspect of the embodiments of this disclosure, an integrated flow measurement and fire suppression device is provided, comprising:

[0008] The fire hydrant body includes a hydrant body, on the side of which a water outlet and a water inlet are provided and fastened by a threaded cap. A valve stem is provided in the middle of the hydrant body, extending into the bottom of the hydrant body. The valve stem presses against a valve disc fastened to a valve seat. The top of the valve stem is connected to an actuating rod located outside the hydrant body.

[0009] The monitoring body includes a main pipe fitting, with an elbow connector on the side of the main pipe fitting. The valve seat of the plug is installed on the elbow connector. A flow meter is installed in the middle of the main pipe fitting, with the detection end extending beyond the bottom surface of the main pipe fitting. The flow meter extends upward beyond the outside of the main pipe fitting, and a data connector is installed on the top of the flow meter.

[0010] In another embodiment, the diameter of the top of the main pipe is smaller than the diameter of its bottom, and the flow meter is threaded to the top of the main pipe and is provided with a pressure-bearing sealing ring.

[0011] In another embodiment, an ultrasonic transducer is provided on the elbow connector near the main pipe fitting. The ultrasonic transducer is inclined, with the receiving end of the ultrasonic transducer facing the main pipe fitting.

[0012] In another embodiment, a pressure sensor is provided on the elbow connector near the main pipe, and a data acquisition device is provided on the side of the main pipe. The data acquisition device is connected to the pressure sensor, the ultrasonic transducer and the data connector respectively.

[0013] In another embodiment, the data acquisition device is further provided with a monitoring antenna on its exterior, and the top opening of the main tube extends upward to form a connection port, and the monitoring antenna is threadedly installed at the connection port.

[0014] In another embodiment, the main body of the monitoring antenna is sleeved outside the flow meter, and a pressure balancing cap is provided at the top of the sleeve of the monitoring antenna.

[0015] In another embodiment, the side of the plug body is provided with a drain port, which is correspondingly located on the upper side of the valve disc.

[0016] According to the embodiments of this disclosure, it has the following advantages: It includes a fire hydrant body, comprising a hydrant body with an outlet and an inlet on its side, secured by a threaded cap; a valve stem extending into the bottom of the hydrant body at its center, the valve stem pressing against a valve disc secured to a valve seat; and an actuating rod connected to the top of the valve stem outside the hydrant body. The monitoring body includes a main pipe fitting with an elbow connector on its side; the valve seat of the hydrant body is mounted on the elbow connector; a flow meter is located in the middle of the main pipe fitting, with its detection end extending beyond the bottom surface of the main pipe fitting; the flow meter extends upwards beyond the outside of the main pipe fitting; and a data connector is located at the top of the flow meter. By setting a lateral monitoring structure, the monitoring structure directly monitors the flow rate of the water supply pipe, achieving the purpose of real-time monitoring of the water supply network and fire water flow without affecting firefighting operations or altering the overall structure of the fire hydrant. This device utilizes the fire hydrant well for flow measurement, which is negligible in cost compared to adding a flow measurement well, and is easier to install directly within the fire hydrant well. It can directly perform flow measurement while retaining all the functions of a fire hydrant. Furthermore, it can monitor fire hydrant pressure and water theft, as well as measure water usage. It can also assist flow measurement equipment, ensuring the accuracy of the data under specific conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this disclosure can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effectiveness and purpose that this disclosure can achieve, should still fall within the scope of the technical content disclosed herein.

[0019] Figure 1 This is a perspective view of an integrated flow measurement and fire suppression device according to an exemplary embodiment;

[0020] Figure 2 This is a front view of an integrated flow measurement and fire suppression device according to an exemplary embodiment;

[0021] Figure 3 This is a right view of an integrated flow measurement and fire suppression device according to an exemplary embodiment.

[0022] Figure 4 for Figure 3 Sectional view along line AA;

[0023] Figure 5 This is a front view of the main pipe fittings and elbow connector in the integrated flow measurement and fire suppression device shown in the embodiment.

[0024] Figure 6 for Figure 5 Sectional view along the BB direction;

[0025] Figure 7 This is a perspective view showing the installation and use of an integrated flow measurement and fire suppression device as illustrated in the embodiment.

[0026] In the diagram: 1. Plug body; 2. Outlet and suction port; 3. End cap; 4. Valve stem; 5. Valve seat; 6. Valve disc; 7. Actuating rod; 8. Main pipe fitting; 9. Elbow connector; 10. Flow meter; 11. Data connector; 12. Pressure sealing ring; 13. Ultrasonic transducer; 14. Pressure sensor; 15. Data acquisition unit; 16. Monitoring antenna; 17. Pressure balance cap; 18. Drain port; 19. Water supply pipe. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0028] The terms “upper,” “lower,” “left,” “right,” and “middle” used in this specification are merely for clarity of description and are not intended to limit the scope of this disclosure. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of this disclosure.

[0029] like Figure 1-4The diagram illustrates an integrated flow measurement fire hydrant device according to an embodiment of this disclosure. Specifically, the fire hydrant device includes a fire hydrant body, comprising a hydrant body 1. The side of the hydrant body 1 is provided with an outlet and an inlet 2, which are fastened together by a threaded cap 3. A valve stem 4 is provided in the middle of the hydrant body 1, extending into the bottom of the hydrant body 1. The valve stem 4 abuts against a valve disc 6 fastened to a valve seat 5. The top of the valve stem 4 is connected to an actuating rod 7 located outside the hydrant body 1. The monitoring body includes a main pipe fitting 8. The side of the main pipe fitting 8 is provided with an elbow connector 9. The valve seat 5 of the hydrant body 1 is mounted on the elbow connector. A flow meter 10 is provided in the middle of the main pipe fitting 8, with the detection end extending beyond the bottom surface of the main pipe fitting 8. The flow meter 10 extends upward beyond the outside of the main pipe fitting 8. A data connector 11 is provided on the top of the flow meter 10. The flow meter 10 is an insertion-type electromagnetic flow meter.

[0030] Compared with existing facilities, this integrated flow measurement fire protection device, by setting up a lateral monitoring structure, directly monitors the flow rate of the water supply pipe 19, thereby achieving the purpose of real-time monitoring of the water supply network and fire water flow without affecting fire protection work or changing the overall structure of the fire hydrant fire monitoring device.

[0031] To ensure the stability and sealing of the flow meter 10 installation, such as Figure 5 As shown, the top diameter of the main pipe fitting 8 is smaller than the bottom diameter. The flow meter 10 is connected to the top of the main pipe fitting 8 by a thread and is provided with a pressure-bearing sealing ring 12.

[0032] like Figure 6 As shown, an ultrasonic transducer 13 is provided on the elbow connector 9 near the main pipe fitting 8. The ultrasonic transducer 13 is inclined, and the receiving end of the ultrasonic transducer 13 faces the main pipe fitting 8.

[0033] The ultrasonic transducer 13 is used to monitor the water flow through it. When the fire hydrant is opened, a "water usage alarm" can be reported to the monitoring system, and the water usage can be measured. Additionally, when the fire hydrant outlet is open, backflow occurs in the water supply pipe 19 where the flow meter 10 is located, leading to inaccurate monitoring results from the flow meter 10. Therefore, the ultrasonic transducer 13 is installed near the fire hydrant at the elbow connector 9 of the flow measuring device. This allows for direct identification of water usage during water use, compensating for the flow meter 10's measurement data and improving the accuracy of flow measurement. Furthermore, the ultrasonic transducer 13, installed within the elbow connector 9, allows for more direct measurement of the fire hydrant's flow rate, enabling independent monitoring of the main pipe and the fire hydrant's flow rate, further improving monitoring accuracy.

[0034] In one embodiment, a pressure sensor 14 is provided on the elbow connector 9 near the main pipe 9, and a data acquisition device 15 is provided on the side of the main pipe 8. The data acquisition device 15 is connected to the pressure sensor 14, the ultrasonic transducer 13 and the data connector 11 respectively.

[0035] Pressure sensor 14 is used to monitor the water pressure in water supply pipe 19, to keep track of the pressure in the water supply network in real time, and to ensure the stability of urban water supply. It also monitors the water pressure of fire hydrants in real time, ensuring sufficient water pressure and volume during firefighting operations. Furthermore, it accurately records changes in water pressure when the fire hydrant is in operation, and uses these changes to determine the sealing status when the hydrant is not in operation, preventing leaks. It also works in conjunction with the monitoring data from flow meter 10 to directly correlate changes in flow rate within water supply pipe 19 under both fixed and changing pressure conditions, enabling reverse flow monitoring.

[0036] In another embodiment, the data acquisition unit 15 is further provided with a monitoring antenna 16 and a transmission interface. The top opening of the main tube 8 extends upward to form a connection port, and the monitoring antenna 16 is threadedly installed at the connection port. The monitoring antenna 16 can realize remote wireless transmission of signals, and can directly acquire monitoring data in real time through remote connection without going through a data structure. The monitoring antenna 16 can also be directly set on the data acquisition unit 15.

[0037] Since the flow meter 10 adopts a sleeve-type threaded connection and is connected to the connection port extending from the top of the main pipe 8, in order to avoid slight pressure leakage during operation, the main body of the monitoring antenna 16 is sleeved outside the flow meter 10, and the top of the sleeve of the monitoring antenna 16 is provided with a pressure balance cap 17.

[0038] See also Figure 3 As shown, the side of the throttle body 1 is provided with a drain port 18, which is correspondingly located on the upper side of the valve disc 6. The drain port 18 is used to drain the water remaining in the throttle body 1 after the work is completed.

[0039] like Figure 7 As shown, during use, the main pipe 8 of the fire hydrant device only needs to be connected and fixed to the flange of the water supply pipe 19. The flow meter 10 is directly inserted into the interior of the water supply pipe 19, thereby directly detecting the flow information in the water supply pipe 19. Even when the fire hydrant is working, it will not affect the continuous monitoring of the flow meter 10. Furthermore, the outlet and the flow meter 10 will not interfere with each other, and there is no need to add an outlet or directly install the flow meter 10 on the outlet, thereby realizing real-time flow monitoring and improving the accuracy and stability of monitoring.

[0040] The integrated flow measurement fire suppression device can be directly installed inside underground fire hydrant wells without requiring road surface damage, water outages, pipe connections, or well construction. It monitors the flow rate of the urban water supply network within existing underground fire hydrant wells while simultaneously fulfilling the function of the fire hydrant itself. Under normal circumstances, when the fire hydrant is not in use, the water flow in the supply network is laminar, and the measurement accuracy meets the standards. However, in one situation: when the fire hydrant is open, the water in the supply network will be diverted and flow out from the hydrant outlet, resulting in inaccurate measurement accuracy. To avoid measurement errors, an ultrasonic transducer sensor is installed near the fire hydrant at a bend below the flow measurement device. When water usage is detected, the fire hydrant is determined to be open, and the flow measurement data is marked as "this measurement data is substandard." Conversely, when the fire hydrant is closed, the flow measurement data is accurate, and the system will automatically mark it.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although the present disclosure has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, such modifications or improvements made without departing from the spirit of the present disclosure are all within the scope of protection claimed by the present disclosure.

Claims

1. An integrated current measurement and fire suppression device, characterized in that, include The fire hydrant body includes a hydrant body, on the side of which a water outlet and a water inlet are provided and fastened by a threaded cap. A valve stem is provided in the middle of the hydrant body, extending into the bottom of the hydrant body. The valve stem presses against a valve disc fastened to a valve seat. The top of the valve stem is connected to an actuating rod located outside the hydrant body. The monitoring body includes a main pipe fitting, with an elbow connector on the side of the main pipe fitting. The valve seat of the plug is installed on the elbow connector. A flow meter is installed in the middle of the main pipe fitting, with the detection end extending beyond the bottom surface of the main pipe fitting. The flow meter extends upward beyond the outside of the main pipe fitting, and a data connector is installed on the top of the flow meter.

2. The integrated flow measurement and fire suppression device according to claim 1, characterized in that, The diameter of the top of the main pipe is smaller than the diameter of the bottom. The flow meter is threaded to the top of the main pipe and is equipped with a pressure-bearing sealing ring.

3. The integrated flow measurement and fire suppression device according to claim 2, characterized in that, An ultrasonic transducer is installed on the elbow connector near the main pipe fitting. The ultrasonic transducer is inclined, with the receiving end of the ultrasonic transducer facing the main pipe fitting.

4. The integrated flow measurement and fire suppression device according to claim 3, characterized in that, A pressure sensor is also provided on the elbow connector near the main pipe fitting. A data acquisition device is provided on the side of the main pipe fitting. The data acquisition device is connected to the pressure sensor, the ultrasonic transducer and the data connector respectively.

5. The integrated flow measurement and fire suppression device according to claim 4, characterized in that, The data acquisition device is also equipped with a monitoring antenna on its exterior. The top opening of the main tube extends upward to form a connection port, and the monitoring antenna is threadedly installed at the connection port.

6. The integrated flow measurement and fire suppression device according to claim 5, characterized in that, The main body of the monitoring antenna is sleeved outside the flow meter, and a pressure balance cap is provided at the top of the sleeve of the monitoring antenna.

7. The integrated flow measurement and fire suppression device according to claim 1, characterized in that, The side of the plug body is provided with a drain port, which is located on the upper side of the valve disc.