Fire hydrant intelligent monitoring device based on the Internet of Things

Abstract

The present invention relates to the technical field of fire hydrants, and specifically to an intelligent fire hydrant monitoring device of the Internet of Things, comprising: a fire hydrant, wherein the side of the fire hydrant is connected to a pressure monitoring port; a monitoring component, wherein the monitoring component is docked and installed with the pressure monitoring port; the monitoring component comprises a measuring piece, wherein the measuring piece is docked and installed with a pressure measuring tube, a piston rod is slidably installed inside the pressure measuring tube, the pressure monitoring port and the pressure measuring tube can be docked, and after docking, the pressure measuring tube is communicated with the interior of the fire hydrant, and a test component for detecting the pressure bearing of the piston rod is installed inside the measuring piece; the ability to monitor the pressure and freezing status of the fire hydrant helps to ensure the normal operation and water supply capacity of the fire hydrant, guarantee the availability of fire water sources, prevent freezing and freezing problems, and provide data support for system maintenance and management.

Description

Technical Field

[0001] The present invention relates to the technical field of fire hydrants, and in particular to an intelligent fire hydrant monitoring device of the Internet of Things. Background Art

[0002] A fire hydrant is a fixed fire-fighting facility whose main function is to control combustible materials, isolate combustible materials, and eliminate ignition sources. It is divided into indoor fire hydrants and outdoor fire hydrants. Outdoor fire hydrants are mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire water supply network to extinguish fires. They can also be directly connected to water hoses and water guns to discharge water for fire extinguishing. Therefore, it is also one of the important fire-fighting facilities for fighting fires. In life, there is no water in the fire hydrant or the water pressure in the fire hydrant is insufficient, resulting in the fire hydrant being unable to be used, affecting precious rescue time. Low pressure will cause the fire hydrant to be unable to provide sufficient water pressure, thereby affecting the water spraying effect and spraying distance, resulting in firefighters being unable to obtain sufficient water in time, delaying the fire extinguishing time, increasing the risk of fire spread, and being unable to effectively extinguish the fire, causing unnecessary fire losses. Summary of the Invention

[0003] The present invention provides an Internet of Things (IoT) fire hydrant intelligent monitoring device capable of timely detecting the water pressure status of fire hydrants.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An intelligent monitoring device for fire hydrants based on the Internet of Things, comprising: a fire hydrant, wherein the side of the fire hydrant is connected to a pressure monitoring port; a monitoring component, which is docked and installed with the pressure monitoring port; the monitoring component includes a measuring piece, which is docked with a pressure measuring tube, and a piston rod is slidably installed inside the pressure measuring tube. The pressure monitoring port and the pressure measuring tube can be docked. After docking, the pressure measuring tube is connected to the interior of the fire hydrant, and a test component for detecting the pressure bearing of the piston rod is installed inside the measuring piece.

[0006] Preferably, the test assembly includes a rotating gear installed in the inner cavity of the measuring piece, the rotating gear is engaged with one end of the piston rod, a pressure spring is arranged between the piston rod and the pressure measuring tube, and a pressure display gauge is installed on the outer wall of the measuring piece, and the pressure display gauge can digitally display the pressure according to the rotation of the rotating gear.

[0007] Preferably, the measuring part also includes a temperature measuring tube arranged on the side, and a temperature monitoring port is provided on the side of the fire hydrant. The temperature measuring tube can be docked and installed on the inner wall of the temperature monitoring port. The temperature measuring tube is communicated with the interior of the fire hydrant. A temperature measuring element is slidably installed inside the temperature measuring tube. A contactable pushing column is provided at one end of the temperature measuring element. The pushing column is engaged with the rotating gear. When the piston rod is moved by water pressure, it drives the rotating gear to rotate, and at the same time, the pushing column pushes the temperature measuring element to move into the temperature monitoring port to perform temperature measurement.

[0008] Preferably, the piston rod also includes a through cavity arranged on the side, an ice detecting cone head is arranged inside the through cavity, a thrust spring is arranged on the outer circumferential surface of the ice detecting cone head, one end of the thrust spring is fixed to the inside of the through cavity, when the internal pressure of the fire hydrant does not cause the piston rod to move, the ice detecting cone head moves due to the release of potential energy of the thrust spring to detect whether the inside of the fire hydrant is in an ice state. When it is in an ice state, the ice detecting cone head moves to a certain position and is blocked by ice and stops moving.

[0009] Preferably, the temperature measuring element also includes a push rod arranged at one end, and a connecting frame is fixed to the end of the ice measuring cone head away from the piston rod, and the push rod is in contact with the connecting frame. When the piston rod is not moved by pressure, the movement of the ice measuring cone head drives the connecting frame to move, and the push rod is pushed by the connecting frame to push the temperature measuring element into the interior of the fire hydrant to measure the temperature and determine whether the interior is in an icing state.

[0010] Preferably, a temperature display screen is fixedly mounted on the outer wall of the measurement, the temperature measuring element is associated with the temperature display screen, a potentiometer is coaxially mounted on the interior of the measuring piece with the rotating gear, the potentiometer can detect the rotation amount of the rotating gear and transmit an electrical signal to the pressure display gauge.

[0011] Preferably, the upper end of the circumferential surface of the piston rod is provided with an upper locking tooth, and the upper locking tooth is engaged with the rotating gear. The lower end of the pushing circumferential surface is provided with a lower locking tooth, and the lower locking tooth is engaged with the rotating gear.

[0012] Preferably, a spiral groove is provided on the outer circumferential surface of the temperature measuring element, and a guide rail cooperating with the spiral groove is provided in the temperature measuring tube. When the temperature measuring element moves, it is guided by the guide rail to perform spiral displacement.

[0013] Preferably, a water outlet valve is installed at the upper end of the fire hydrant, and the water outlet valve is used to control the water outlet. A pressure measuring valve is provided on the pressure monitoring port, and water can enter the pressure measuring tube by opening the pressure measuring valve. A temperature measuring pressure valve is provided on the temperature monitoring port. When measuring, the temperature measuring pressure valve and the pressure measuring valve can be opened in sequence. After the test is completed, the temperature measuring pressure valve and the pressure measuring valve can be closed and the measuring part can be removed.

[0014] The present invention provides an Internet of Things (IoT) fire hydrant intelligent monitoring device, which can monitor the pressure and freezing status of fire hydrants to help ensure the normal operation and water supply capacity of fire hydrants, guarantee the availability of fire water sources, prevent ice and freezing problems, and provide data support for system maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the fire hydrant intelligent monitoring device of the Internet of Things of the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the fire hydrant intelligent monitoring device of the Internet of Things of the present invention;

[0017] Figure 3 This is a schematic diagram of the monitoring component structure of the present invention;

[0018] Figure 4 Schematic diagram of the cross-sectional structure of the monitoring component of the present invention;

[0019] Figure 5 This is a schematic structural diagram of the piston rod and temperature measuring element of the present invention;

[0020] Figure 6 Schematic diagram of the cross-sectional structure of the piston rod and the temperature measuring element of the present invention;

[0021] Figure 7 Schematic diagram of the cross-sectional structure of the measuring element of the present invention;

[0022] Figure 8 This is a schematic cross-sectional structural diagram of the status of the fire hydrant intelligent monitoring device of the Internet of Things of the present invention.

[0023] In the figure: 1. Fire hydrant; 2. Water outlet valve; 3. Pressure measuring tube; 4. Temperature measuring tube; 5. Potentiometer; 8. Temperature monitoring port; 9. Pressure monitoring port; 11. Measurement; 12. Rotating gear; 13. Piston rod; 14. Temperature measuring element; 17. Ice pick head; 18. Connecting frame; 19. Push column; 21. Pressure spring; 22. Thrust spring; 24. Push rod; 26. Temperature; 27. Pressure display gauge. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 8The present invention provides a technical solution: an intelligent monitoring device for fire hydrants of the Internet of Things, comprising: a fire hydrant 1, a pressure monitoring port 9 connected to the side of the fire hydrant 1; a monitoring component, the monitoring component is docked and installed with the pressure monitoring port 9; the monitoring component comprises a measuring piece 11, the measuring piece 11 is docked and installed with a pressure measuring tube 3, a piston rod 13 is slidably installed inside the pressure measuring tube 3, the pressure monitoring port 9 and the pressure measuring tube 3 can be docked, and after docking, the pressure measuring tube 3 is connected to the inside of the fire hydrant 1, and a test component for detecting the pressure bearing of the piston rod 13 is installed inside the measuring piece 11; in life, there is no water in the fire hydrant or the water pressure in the fire hydrant 1 is insufficient, resulting in the fire hydrant 1 being unable to be used, which will affect precious rescue time. Low pressure will cause the fire hydrant 1 to be unable to provide Supply sufficient water pressure, thereby affecting the water spraying effect and spraying distance, resulting in firefighters unable to obtain sufficient water source in time, delaying the fire extinguishing time, increasing the risk of fire spreading, and unable to effectively extinguish the fire. When the pressure inside the fire hydrant 1 is low, it cannot be predicted in advance, which will cause it to be unusable during fire fighting; in this case, a monitoring component can be installed and docked on the fire hydrant 1, and the monitoring component is used to dock with the pressure monitoring port 9. In order to ensure that the inside will not be frozen before the monitoring component is monitored, causing the monitoring component to be unable to operate, the piston rod 13 adopts a piston plus push rod form. When the piston is squeezed by water pressure and moves, the push rod will move accordingly and transmit it to the test component to monitor the internal pressure.

[0026] Specifically, the test assembly includes a rotating gear 12 mounted within the inner cavity of a measuring member 11. The rotating gear 12 meshes with one end of a piston rod 13. A pressure spring 21 is disposed between the piston rod 13 and the pressure measuring tube 3. A pressure display gauge 27 is mounted on the outer wall of the measuring member 11. The pressure display gauge 27 can digitally display the pressure based on the rotation of the rotating gear 12. When it is necessary to test whether the water pressure inside the fire hydrant 1 is stable or meets the standard, the pressure measuring tube 3 and the temperature measuring tube 4 are connected to the temperature monitoring port 8. When the test valve of the fire hydrant 1 is opened, water pressure enters the pressure measuring tube 3, which pushes the piston rod 13 to move. The pressure spring 21 contracts according to its own pressure coefficient. When the piston rod 13 moves, it also drives the rotating gear 12 meshed with it to rotate. As the rotating gear 12 rotates, the pressure value inside the fire hydrant 1 is displayed on the pressure display gauge 27 and by an indicator. At this point, the basic pressure test of the water pressure inside the fire hydrant 1 is completed, thereby achieving early prediction of the internal pressure of the fire hydrant 1 and preventing the fire hydrant from being unusable due to insufficient water pressure in the event of an accident.

[0027] Furthermore, the measuring member 11 also includes a temperature measuring tube 4 arranged on the side, and a temperature monitoring port 8 is provided on the side of the fire hydrant 1. The temperature measuring tube 4 can be docked and installed on the inner wall of the temperature monitoring port 8. The temperature measuring tube 4 is communicated with the inside of the fire hydrant 1. A temperature measuring element 14 is slidably installed inside the temperature measuring tube 4. A contactable pushing column 19 is provided at one end of the temperature measuring element 14. The pushing column 19 is engaged with the rotating gear 12. When the piston rod 13 is moved by water pressure, it drives the rotating gear 12 to rotate. At the same time, the pushing column 19 pushes the temperature measuring element 14 to move into the temperature monitoring port 8 to measure the temperature. In normal weather or general conditions, the water pressure inside the fire hydrant 1 will only be in a high pressure or low pressure state. It is only necessary to judge whether the water pressure meets the standard. However, when the outdoor fire hydrant is in cold weather in winter, the fire hydrant In addition to testing the pressure inside the plug 1, it is also necessary to monitor the status of the internal water. It may be impossible to determine whether the internal water pressure is insufficient or the internal water has frozen. Moreover, the internal state is a mixture of ice and water. At this time, the pressure is small and it may freeze at any time. In this case, it is necessary to judge one by one. First, it is necessary to detect whether the internal water is frozen due to low temperature and cannot be used. Open the test valve when starting to measure. When the piston rod 13 is pushed to monitor the water pressure, the gear 12 is driven by the pressure to rotate. At the same time, the rotation of the gear 12 will cause the push column 19 to push the temperature measuring element 14 into the fire hydrant 1 for temperature measurement. The temperature measuring element 14 measures the inside of the fire hydrant 1 to determine the status of the water inside it. The temperature measurement can know in advance whether the inside of the fire hydrant 1 is frozen, which is convenient for later use.

[0028] Preferably, the piston rod 13 also includes a through cavity provided on the side, an ice-detecting cone head 17 is provided inside the through cavity, a thrust spring 22 is provided on the outer circumference of the ice-detecting cone head 17, one end of the thrust spring 22 is fixed to the inside of the through cavity, when the pressure of the water inside the fire hydrant 1 is not enough to move the piston rod 13, the ice-detecting cone head 17 is released by the thrust spring 22 to extend into the inside of the fire hydrant 1 and move to detect whether the inside of the fire hydrant 1 is in an ice state. When it is in an ice state, the ice-detecting cone head 17 will move forward to a certain position and will be blocked by ice and stop moving; when the outdoor fire hydrant is cold in winter ... In bad weather, the water pipes and sprinkler nozzles may be frozen, resulting in no pressure inside the fire hydrant 1 to squeeze the piston rod 13, and it is impossible to judge whether it is in a low-pressure state or an ice state through the pressure display gauge 27. At this time, when the piston rod 13 has no pressure and remains stationary, the ice-sensing cone head 17 is extended into the fire hydrant 1 by the release of potential energy by the thrust spring 22. When ice is formed inside the fire hydrant 1, the ice-sensing cone head 17 will move to contact the ice and stop. When the fire hydrant is in a low-pressure or water-free state, the ice-sensing cone head 17 will move to the full distance. The ice state can be judged by the displacement distance of the ice-sensing cone head 17.

[0029] More preferably, the temperature measuring element 14 further comprises a push rod 24 provided at one end, and a connecting frame 18 is fixed to the end of the ice measuring cone 17 away from the piston rod 13, and the push rod 24 contacts the connecting frame 18. When the piston rod 13 is not moved by pressure, the ice measuring cone 17 moves and drives the connecting frame 18 to move, and the push rod 24 is pushed by the connecting frame 18 to push the temperature measuring element 14 into the fire hydrant to measure the temperature and determine whether the interior is in an ice state. When the water state inside the fire hydrant is a mixture of ice and water, the ice measuring cone 17 cannot be blocked by ice cubes when entering, and it is impossible to determine whether the interior is in a low pressure state or an ice state. In this case, a secondary judgment is required to determine whether the interior is in a low pressure state or an ice-water mixture. When the ice measuring cone 17 is moved by the potential energy released by the thrust spring 22, the connecting frame 18 moves accordingly and pushes the push rod 24 to enable the temperature measuring element 14 to enter the fire hydrant 1 to measure the temperature. If the measured data result shows no ice, it indicates that the fire hydrant 1 is in a low pressure state. On the contrary, if the measured data result shows an ice state,

[0030] Analysis of the internal state of the fire hydrant 1: The first case is a high-low pressure state, and the data will be displayed on the pressure display gauge 27 through the movement of the piston rod 13; the second case is a low-pressure or frozen state. If the ice cone head 17 encounters ice, it will be inserted halfway and will stop when it touches the ice. At this time, it is frozen. When it is low pressure, the ice cone head 17 will be inserted to the bottom. At this time, it is a low-pressure state; the third state is when ice and water are mixed. At this time, the rising of the ice cone head 1 will drive the movement of the measuring part 11. When the measuring part 11 moves to the inside of the fire hydrant 1, the internal temperature can be measured, and the data is fed back to the temperature display screen 26 to judge the internal situation.

[0031] Specifically, a temperature display 26 is fixedly mounted on the outer wall of the measuring member 11, and the temperature measuring element 14 is associated with the temperature display 26. A potentiometer 5 is coaxially mounted on the interior of the measuring member 11 with the rotating gear 12. The potentiometer 5 can detect the rotation of the rotating gear 12 and transmit an electrical signal to the pressure display 27. When the rotating gear 12 rotates, the potentiometer 5 measures the pressure by the rotation of the rotating gear 12, and intuitively displays the data value on the pressure display 27 through a pointer. At the same time, the temperature measuring element 14 displays the temperature value inside the fire hydrant 1 through the temperature 26. The potentiometer is usually composed of a movable sliding contact and a fixed resistor. When pressure is applied, the resistance of the potentiometer changes. The position of the sliding contact moves with the change of the rotating gear 12, thereby changing the resistance value. By measuring the resistance value corresponding to the position of the sliding contact, the magnitude of the pressure can be deduced.

[0032] More specifically, an upper locking tooth is provided on the upper end of the circumferential surface of the piston rod 13, which meshes with the rotating gear 12, and a lower locking tooth is provided on the lower end of the circumferential surface of the push column 19, which meshes with the rotating gear 12; when the piston rod 13 is moved by water pressure, the rotating gear 12 rotates and meshes with the lower locking tooth at the lower end of the circumferential surface of the push column 19, so that the temperature measuring element 14 enters the interior of the fire hydrant 1 to measure the temperature. When the test is completed, the fire hydrant test valve is closed, the piston rod 13 loses the water pressure restriction and moves back, and the ice cone head 17 hits the valve to compress the thrust spring 22. At the same time, the movement of the piston rod 13 will cause the rotating gear 12 to rotate in the opposite direction, driving the push column 19 to retract.

[0033] Furthermore, a spiral groove is provided on the outer circumference of the temperature measuring element 14, and a guide rail cooperating with the spiral groove is provided in the temperature measuring tube 4. When the temperature measuring element 14 moves, it will be guided by the guide rail to perform spiral displacement, and will be rotated to prevent small ice debris from blocking the freezing state; the temperature measuring element rotates through the cooperation of the spiral groove and the guide rail to achieve short-term rotation, and the screw-in method can better enter the interior of the fire hydrant 1.

[0034] Specifically, a water outlet valve 2 is installed at the upper end of the fire hydrant 1, and the water outlet valve 2 is used to control the water outlet. A pressure measuring valve is provided on the pressure monitoring port 9. Opening the pressure measuring valve can allow water to enter the pressure measuring tube 3. A pressure measuring valve is provided on the temperature monitoring port 8. When it is necessary to test the temperature, when it is necessary to test the water pressure and water temperature, the temperature measuring pressure valve and the pressure measuring valve can be opened in sequence. After the test is completed, the temperature measuring pressure valve and the pressure measuring valve can be closed to remove the measuring part 11.

[0035] Working principle: When the fire hydrant intelligent monitoring device based on the Internet of Things is used, the pressure measuring tube 3 is connected to the pressure monitoring port 9, and the temperature measuring tube 4 is connected to the temperature monitoring port 8. After the pressure measuring valve and the temperature and pressure measuring valve are opened, when the water pressure is not low or ice is formed, the water pressure enters the pressure measuring tube 3 and pushes the piston rod 13. When the piston rod 13 moves, it will drive the rotating gear 12 to rotate. When the rotating gear 12 rotates, the pressure display meter 27 will display the pressure value. At the same time, the rotation of the rotating gear 12 will cause the push column 19 to push the temperature measuring element 14 into the interior of the fire hydrant 1 to measure the temperature; when the water pressure is low or ice is formed, the ice cone head 17 is pushed back by the thrust. The spring 22 releases potential energy and moves. At this time, when ice is formed inside the fire hydrant 1, the ice-sensing cone head 17 will move to contact with the ice and stop. When the inside of the fire hydrant is at low pressure or no water, the ice-sensing cone head 17 will move to the full distance. At this time, no matter whether the inside of the fire hydrant is iced or at low pressure, the connecting frame 18 will move and push the push rod 24 to make the temperature measuring element 14 enter the inside of the fire hydrant 1 to measure the temperature. When the measurement result is that there is no ice, it means that the fire hydrant 1 is at low pressure, otherwise it is iced. When it needs to be dismantled, the piston rod 13 will be squeezed under high pressure, so that the ice-sensing cone head 17 will not be extended. At this time, the pressure measuring valve is closed and the device can be disassembled.

[0036] The present invention utilizes the cooperation of the above-mentioned structure to monitor the pressure and freezing status of fire hydrants, which helps to ensure the normal operation and water supply capacity of fire hydrants, improve fire emergency response capabilities, ensure the availability of fire water sources, prevent ice and freezing problems, and provide data support for system maintenance and management.

[0037] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The fire hydrant intelligent monitoring device based on the Internet of Things is characterized by: include: A fire hydrant (1), wherein a side of the fire hydrant (1) is connected to a pressure monitoring port (9); A monitoring component is connected to the pressure monitoring port (9) and installed; The monitoring assembly includes a measuring piece (11), the measuring piece (11) is docked with a pressure measuring tube (3), a piston rod (13) is slidably installed inside the pressure measuring tube (3), the pressure monitoring port (9) and the pressure measuring tube (3) can be docked, and after docking, the pressure measuring tube (3) is communicated with the interior of the fire hydrant (1), and a test assembly for detecting the pressure bearing of the piston rod (13) is installed inside the measuring piece (11); The test assembly includes a rotating gear (12) installed in the inner cavity of the measuring piece (11), the rotating gear (12) is meshed with one end of the piston rod (13), a pressure spring (21) is provided between the piston rod (13) and the pressure measuring tube (3), a pressure display gauge (27) is installed on the outer wall of the measuring piece (11), and the pressure display gauge (27) can digitally display the pressure according to the rotation of the rotating gear (12); the measuring piece (11) also includes a temperature measuring tube (4) provided on the side, and a temperature monitoring port (8) is provided on the side of the fire hydrant (1). The temperature tube (4) can be docked and installed on the inner wall of the temperature monitoring port (8). The temperature measuring tube (4) is communicated with the interior of the fire hydrant (1). A temperature measuring element (14) is slidably installed inside the temperature measuring tube (4). A contactable pushing column (19) is provided at one end of the temperature measuring element (14). The pushing column (19) is engaged with the rotating gear (12). When the piston rod (13) moves under water pressure, the rotating gear (12) is driven to rotate. At the same time, the pushing column (19) pushes the temperature measuring element (14) to move into the temperature monitoring port (8) to perform temperature measurement. The piston rod (13) further comprises a through cavity arranged on the side, an ice-detecting cone head (17) is arranged inside the through cavity, a thrust spring (22) is arranged on the outer circumference of the ice-detecting cone head (17), one end of the thrust spring (22) is fixed inside the through cavity, when the internal pressure of the fire hydrant (1) does not cause the piston rod (13) to move, the ice-detecting cone head (17) is moved by the potential energy released by the thrust spring (22) to detect whether the inside of the fire hydrant (1) is in an ice state, and when it is in an ice state, the ice-detecting cone head (17) moves to a certain position and is blocked by ice and stops moving.

2. The fire hydrant intelligent monitoring device based on the Internet of Things according to claim 1 is characterized in that: The temperature measuring element (14) further comprises a push rod (24) arranged at one end, a connecting frame (18) is fixed to the end of the ice measuring cone head (17) away from the piston rod (13), and the push rod (24) contacts the connecting frame (18). When the piston rod (13) is not moved by pressure, the ice measuring cone head (17) moves to drive the connecting frame (18) to move, and the push rod (24) is pushed by the connecting frame (18) to push the temperature measuring element (14) into the interior of the fire hydrant to measure the temperature and judge whether the interior is in an icing state.

3. The fire hydrant intelligent monitoring device based on the Internet of Things according to claim 1 is characterized in that: A temperature display screen (26) is fixedly mounted on the outer wall of the measuring member (11), and the temperature measuring element (14) is associated with the temperature display screen (26). A potentiometer (5) is coaxially mounted on the interior of the measuring member (11) and the rotating gear (12). The potentiometer (5) can detect the rotation amount of the rotating gear (12) and transmit an electrical signal to a pressure display gauge (27).

4. The fire hydrant intelligent monitoring device based on the Internet of Things according to claim 1 is characterized in that: The upper end of the circumferential surface of the piston rod (13) is provided with an upper latching tooth, which meshes with the rotating gear (12); the lower end of the circumferential surface of the pushing column (19) is provided with a lower latching tooth, which meshes with the rotating gear (12).

5. The fire hydrant intelligent monitoring device based on the Internet of Things according to claim 3 is characterized by: A spiral groove is provided on the outer circumferential surface of the temperature measuring element (14), and a guide rail matching the spiral groove is provided in the temperature measuring tube (4). When the temperature measuring element (14) moves, it is guided by the guide rail to perform spiral displacement.

6. The fire hydrant intelligent monitoring device based on the Internet of Things according to claim 1 is characterized in that: The water outlet valve (2) is installed at the upper end of the fire hydrant (1), and the water outlet valve (2) is used to control the water outlet. The pressure monitoring port (9) is provided with a pressure measuring valve. When the pressure measuring valve is opened, water can enter the pressure measuring tube (3). The temperature monitoring port (8) is provided with a temperature measuring pressure valve. When measuring, the temperature measuring pressure valve and the pressure measuring valve are opened in sequence. After the test is completed, the temperature measuring pressure valve and the pressure measuring valve are closed and the measuring component (11) can be removed.

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