Portable fire-fighting water meter and manufacturing method thereof

Abstract

The invention relates to a portable fire-fighting water meter and a manufacturing method thereof and relates to the technical field of fire-fighting water meters, the fire-fighting water meter comprises a flow guide pipe, one end of the flow guide pipe is coaxially connected with a fire-fighting quick-connection male head, and the other end of the flow guide pipe is coaxially connected with a fire-fighting quick-connection female head; the electromagnetic sensor is arranged on the flow guide pipe; the pressure sensor is arranged on the flow guide pipe, and the pressure sensor is used for detecting the pressure in the flow guide pipe; the converter comprises a control part and a rechargeable battery, the rechargeable battery is electrically connected with the control part, and the rechargeable battery is used for supplying power; the pressure sensor and the electromagnetic sensor are both electrically connected with the control part, and the control part is used for receiving signals sent by the pressure sensor and controlling the electromagnetic sensor to be turned on or turned off according to the signals sent by the pressure sensor. When the fire-fighting water meter is used for fire-fighting operation, the stability of the fire-fighting operation can be improved, and the possibility of fire-fighting operation interruption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fire water meters, and in particular to a portable fire water meter and a manufacturing method thereof. Background Art

[0002] Electromagnetic water meter is a device that uses the principle of electromagnetic induction to measure water flow. It has high precision, long life and remote monitoring capabilities, so it has been widely used in the construction of smart cities and the promotion of digital water resource management. Since electromagnetic water meters can automatically detect water flow, some existing fire water meters also use electromagnetic water meters. When using fire water meters, connect the fire water meters to the corresponding fire hydrants or fire trucks, and the fire water meters can measure water consumption in real time.

[0003] At present, common electromagnetic water meters mainly include a flow guide tube, an electromagnetic sensor and a converter. The flow guide tube serves as a channel for water to flow through and ensures a smooth water flow. Flanges are provided at both ends of the flow guide tube in the length direction, so that the electromagnetic water meter can be connected to other equipment through flanges. The electromagnetic sensor includes an excitation coil and a measuring electrode. The excitation coil is used to generate a magnetic field, while the measuring electrode is used to detect the induced electromotive force generated by the water flow to realize the flow detection function. The converter includes a signal processor, a microprocessor and a display, etc., which are mainly responsible for processing electromagnetic sensor signals, calculating flow, and providing data display and output functions.

[0004] Existing ordinary electromagnetic water meters are often connected to other equipment through flanges. The flange connection method can ensure the stability of the installation of the electromagnetic water meter, but it also makes the disassembly and assembly of the electromagnetic water meter more difficult. During the firefighting operation, since the firefighting water meter needs to be used for a long time, when the electromagnetic water meter is low on power, it is difficult to replace the electromagnetic water meter in time, which easily leads to the interruption of the firefighting operation. Summary of the invention

[0005] The present application provides a portable fire water meter and a method for making the same, the purpose of which is to extend the service life of the fire water meter, increase the convenience of disassembly and assembly of the fire water meter, ensure that the fire water meter can be quickly replaced when the fire water meter is low on power, reduce the possibility of interruption of firefighting operations, and improve the stability of firefighting operations.

[0006] In the first aspect, the portable fire water meter provided in the present application adopts the following technical solution: A portable fire water meter comprises a flow guide tube, one end of which is coaxially connected to a fire quick-connect male connector, and the other end of which is coaxially connected to a fire quick-connect female connector; an electromagnetic sensor, which is arranged on the flow guide tube; a pressure sensor, which is arranged on the flow guide tube and is used to detect the internal pressure of the flow guide tube; a converter, which comprises a control component and a rechargeable battery, which is electrically connected to the control component and is used to supply power; the pressure sensor and the electromagnetic sensor are both electrically connected to the control component, and the control component is used to receive a signal sent by the pressure sensor and control the opening or closing of the electromagnetic sensor according to the signal sent by the pressure sensor.

[0007] By adopting the above technical solution, through the setting of the guide pipe, electromagnetic sensor and converter, when there is water flowing through the guide pipe, the electromagnetic sensor realizes flow detection, the converter obtains the detection information of the electromagnetic sensor and processes it, and finally obtains the flow data in the guide pipe, which can meet the flow detection function of the fire water meter.

[0008] On this basis, a fire quick-connect male connector and a fire quick-connect female connector are respectively set at both ends of the diversion pipe, which facilitates the quick connection and quick disassembly of the diversion pipe and other fire-fighting equipment, thereby ensuring that the fire water meter can be quickly replaced when the fire water meter is low on power, thereby ensuring that the firefighting operation can be carried out stably.

[0009] Due to the setting of the pressure sensor, the pressure sensor can detect the pressure change inside the guide pipe, so the pressure sensor can be used as a switch to start the electromagnetic sensor. When water flows in the guide pipe, the pressure sensor detects the pressure change inside the guide pipe, and the pressure sensor sends a signal to the control component. The control component starts the electromagnetic sensor to realize the flow detection function, which makes it unnecessary to turn on the electromagnetic sensor in real time, which can greatly reduce the power consumption of the fire water meter when it is in standby state, thereby extending the working time of the fire water meter during the fire operation time, which ensures that the fire operation can be carried out stably.

[0010] Therefore, through the cooperation of the fire quick-connect male connector, the fire quick-connect female connector, the pressure sensor and the converter, when the fire water meter is used for firefighting operations, the possibility of interruption of firefighting operations can be reduced and the stability of firefighting operations can be improved.

[0011] Optionally, the electromagnetic sensor includes an excitation coil, a magnetic yoke plate and two electrodes, the excitation coil is attached to the outside of the guide tube; the magnetic yoke plate is located on the side of the excitation coil away from the guide tube, both ends of the magnetic yoke plate in the length direction are bent toward the direction of the guide tube to form a bending portion, and the excitation coil is located between the two bending portions; the two electrodes are arranged on the guide tube at intervals along the length direction of the magnetic yoke plate, the two electrodes are located between the two bending portions, and the excitation coil is located between the two electrodes.

[0012] By adopting the above technical solution, the setting of the excitation coil can introduce a magnetic field into the guide tube. The magnetic yoke plate can guide the magnetic field inside the guide tube out through the cooperation of the two bent parts, and then guide the magnetic field back to the excitation coil. Therefore, through the setting of the excitation coil and the magnetic yoke plate, a stable magnetic field can be formed at a position of the guide tube close to the excitation coil. Due to the existence of the stable magnetic field, when water flows through the guide tube, the potential difference can be detected between the two electrodes, thereby realizing the detection of the flow rate and flow velocity in the guide tube. Since a single excitation coil is used, the magnetic field in the guide tube is close to the excitation coil, which makes the detection result of the electromagnetic sensor more accurate when the flow rate in the guide tube is larger.

[0013] Optionally, the electromagnetic sensor further includes a pole shoe plate, which is located on a side of the excitation coil facing the flow guide tube, the pole shoe plate is attached to the outer side of the flow guide tube, and the excitation coil is in contact with the pole shoe plate.

[0014] By adopting the above technical solution and setting the pole shoe plate, the magnetic field generated by the excitation coil can be guided toward the inside of the flow guide tube, which can optimize the magnetic field distribution.

[0015] Optionally, the electrode and the excitation coil are arranged at intervals.

[0016] By adopting the above technical solution, the electrode and the excitation coil are arranged at a distance, thereby ensuring the accuracy of the electrode detection result.

[0017] Optionally, a protective shell is provided on the outer wall of the guide tube, and the opening of the protective shell is located on the side of the protective shell away from the guide tube; the electromagnetic sensor, the pressure sensor and the converter are all located in the protective shell; a sealing cover is provided on the protective shell, the sealing cover is detachably connected to the protective shell, and the sealing cover closes the opening of the protective shell.

[0018] By adopting the above technical solution, the provision of the protective housing provides installation space and protection for the electromagnetic sensor, the pressure sensor and the converter, while the provision of the sealing cover facilitates the disassembly and assembly of the electromagnetic sensor, the pressure sensor and the converter.

[0019] Optionally, a visual port is formed through the sealing cover, and a transparent plate is provided on the sealing cover, and the transparent plate closes the visual port.

[0020] By adopting the above technical solution, the cooperation between the viewing port and the transparent plate facilitates the information transmission between the converter and the external device, and also facilitates the observation of the internal situation of the protective shell.

[0021] Optionally, a handle is provided on the sealing cover.

[0022] By adopting the above technical solution and setting the handle, when the sealing cover is connected to the protective shell, the handle facilitates the movement of the fire water meter; when the sealing cover and the protective shell are disassembled, the handle facilitates the separation of the sealing cover and the protective shell.

[0023] Optionally, the converter further includes a magnetic charging seat, which is disposed on the sealing cover and is electrically connected to the control component.

[0024] By adopting the above technical solution and providing a magnetic charging stand, it is convenient to charge the rechargeable battery, thereby improving the convenience of charging the fire water meter.

[0025] Optionally, the outer wall of the flow guide pipe is further provided with a base, the base is fixedly connected to the outer wall of the flow guide pipe, and a plurality of weight-reducing grooves are formed on the base.

[0026] By adopting the above technical solution and setting the base, when the fire water meter is placed on the ground, the base can provide stable support for the fire water meter. The weight reduction groove can reduce the weight of the base, thereby reducing the weight of the entire fire water meter, which is convenient for carrying and disassembling the fire water meter.

[0027] In the second aspect, the present application provides a method for manufacturing a portable fire water meter using the following technical solution: A method for making a portable fire water meter, which is used for making the above-mentioned portable fire water meter, comprises the following steps: S1, making a guide tube, a base, a protective shell, a sealing cover, a fire quick-connect male head and a fire quick-connect female head; S2, installing a pressure sensor and an electromagnetic sensor in the protective shell; S3, installing a converter in the protective shell, and connecting the pressure sensor, the electromagnetic sensor and the converter through a wire; S4, assembling the sealing cover, the fire quick-connect male head and the fire quick-connect female head.

[0028] By adopting the above technical solution, the production and assembly of fire water meters can be realized.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can improve the convenience of disassembly and assembly of the fire water meter by setting up the fire quick-connect male head and the fire quick-connect female head; the present application can reduce the power consumption of the fire water meter in the standby state by cooperating with the pressure sensor and the converter, thereby extending the use time of the fire water meter; therefore, by cooperating with the fire quick-connect male head, the fire quick-connect female head, the pressure sensor and the converter, when the fire water meter is used for firefighting operations, the possibility of interruption of firefighting operations can be reduced and the stability of firefighting operations can be improved.

[0030] 2. This application, through the setting of an electromagnetic sensor and the coordination of a single excitation coil, a magnetic yoke plate and a pole shoe plate, can reduce the weight of the electromagnetic sensor while satisfying the functions of the electromagnetic sensor, making the fire water meter lighter and easier to disassemble, assemble and carry.

[0031] 3. This application can protect the electromagnetic sensor, pressure sensor and converter through the coordinated setting of the protective shell and the sealing cover, thereby improving the anti-fall and waterproof capabilities of the fire water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the fire water meter of Example 1 of the present application.

[0033] Figure 2 It is a schematic diagram of the cross-sectional structure of the fire water meter of Example 1 of the present application.

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of the fire water meter in another position of Example 1 of the present application.

[0035] Figure 4 It is a schematic diagram of the explosion structure of the electromagnetic sensor of Example 1 of the present application.

[0036] Figure 5 It is a schematic diagram of the overall structure of the fire water meter of Example 2 of the present application.

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the fire water meter of Example 2 of the present application.

[0038] Figure 7 It is a schematic diagram of the overall structure of the module shell of Example 2 of the present application.

[0039] Figure 8 It is a schematic diagram of the internal structure of the protective shell of Example 2 of the present application.

[0040] In the figure, 1, flow guide tube; 11, inner lining layer; 12, third hole; 13, pressure measuring hole; 2, electromagnetic sensor; 21, excitation coil; 22, pole shoe plate; 221, first hole; 23, magnetic choke plate; 231, second hole; 232, bending part; 24, electrode; 25, mounting bolt; 3, converter; 31, rechargeable battery; 32, control unit; 33, magnetic charging stand; 4, fire fast connector male head; 5, fire fast connector female head; 6, base; 61, weight reduction groove; 7, protective shell; 71, installation space; 711, first space; 712, second space; 72, sealing cover; 721, visual port; 722, transparent plate; 73, handle; 8, pressure sensor; 9, module shell; 91, module space; 92, battery box; 93, battery socket; 94, sealing plate; 10, positioning assembly; 101, positioning column; 102, positioning slot; 20, secondary seal; 201, partition plate; 202, mounting ring; 30, quick-connect assembly; 301, first interface; 302, second interface. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0042] Example 1: A portable fire water meter, referring to Figure 1 and Figure 2 , including a flow guide tube 1, an electromagnetic sensor 2 and a converter 3, wherein the electromagnetic sensor 2 and the converter 3 are both arranged outside the flow guide tube 1, and the electromagnetic sensor 2 is electrically connected to the converter 3. When water flows through the flow guide tube 1, the electromagnetic sensor 2 detects the flow rate, and the converter 3 obtains and processes the detection information of the electromagnetic sensor 2, and finally obtains the flow rate data in the flow guide tube 1.

[0043] Reference Figure 2 The inner wall of the flow guide tube 1 is sprayed with an inner lining layer 11, which is formed by spraying nylon or Teflon material, and the thickness of the inner lining layer 11 is about 0.5 mm. The spraying of the inner lining layer 11 makes the inner wall of the flow guide tube 1 have good insulation, wear resistance and corrosion resistance.

[0044] Reference Figure 1 and Figure 2 One end of the guide pipe 1 is coaxially connected to a fire quick-connect male connector 4, and the other end is coaxially connected to a fire quick-connect female connector 5. Both the fire quick-connect male connector 4 and the fire quick-connect female connector 5 are sleeved on the outside of the guide pipe 1, and both the fire quick-connect male connector 4 and the fire quick-connect female connector 5 are threadedly connected to the guide pipe 1. Through the coordinated arrangement of the fire quick-connect male connector 4 and the fire quick-connect female connector 5, the guide pipe 1 can be quickly connected and quickly disassembled with other fire water supply equipment.

[0045] Reference Figure 1 and Figure 3 The outer wall of the flow guide pipe 1 is also provided with a base 6, which is arranged opposite to the converter 3 along the radial direction of the flow guide pipe 1, and the base 6 is fixedly connected to the outer wall of the flow guide pipe 1, and a weight reduction groove 61 is provided on the side of the base 6 away from the flow guide pipe 1. The provision of the weight reduction groove 61 can reduce the weight of the entire fire water meter, and the provision of the base 6 ensures that the fire base 6 can be stably placed.

[0046] Reference Figure 1 and Figure 3 A protective shell 7 is also provided on the outer wall of the flow guide tube 1. The protective shell 7 is fixedly connected to the outer wall of the flow guide tube 1. The protective shell 7 and the base 6 are arranged opposite to each other along the radial direction of the flow guide tube 1. A sealing cover 72 is provided on the side of the protective shell 7 away from the flow guide tube 1. The sealing cover 72 is connected to the protective shell 7 by bolts. An installation space 71 is formed in the protective shell 7. The opening of the protective shell 7 is located on the side of the protective shell 7 facing the sealing cover 72. The sealing cover 72 closes the opening of the protective shell 7. The electromagnetic sensor 2 and the converter 3 are both located in the installation space 71.

[0047] The setting of the protective housing 7 provides an installation space 71 for the installation of the electromagnetic sensor 2 and the converter 3, thereby protecting the electromagnetic sensor 2 and the converter 3. The setting of the sealing cover 72 realizes the sealing of the installation space 71; since the sealing cover 72 is connected to the protective housing 7 by bolts, it is convenient to disassemble the sealing cover 72, thereby facilitating the disassembly and maintenance of the electromagnetic sensor 2 and the converter 3 in the protective housing 7.

[0048] Reference Figure 1 and Figure 2 The sealing cover 72 is provided with a viewing port 721, which is connected to the installation space 71, and a transparent plate 722 is provided in the viewing port 721. In this embodiment, the transparent plate 722 is a transparent acrylic plate or a tempered glass plate. Through the viewing port 721, signal transmission can be achieved, and the converter 3 located in the installation space 71 can be viewed, so that the data of the fire water meter can be read.

[0049] Reference Figure 1 and Figure 2 The sealing cover 72 is provided with a handle 73, which is located on the side of the sealing cover 72 away from the flow guide pipe 1. The setting of the handle 73, on the one hand, facilitates lifting the entire fire water meter, thereby improving the convenience of the fire water meter and facilitating the movement of the fire water meter; on the other hand, after the sealing cover 72 is disassembled, the setting of the handle 73 facilitates the removal of the sealing cover 72.

[0050] In this embodiment, refer to Figure 1 and Figure 2The guide pipe 1, the base 6, the sealing cover 72, the handle 73, the fire quick-connect female connector 5 and the fire quick-connect male connector 4 are all made of aluminum alloy material, and are all machined or die-casted. This can improve the strength of the fire water meter, ensure the fall resistance of the fire water meter, and reduce the weight of the fire water meter, making the fire water meter easy to carry and transport, and can be used in harsh environments.

[0051] Reference Figure 3 and Figure 4 The electromagnetic sensor 2 includes an excitation coil 21, which is saddle-shaped, and the length direction of the excitation coil 21 is arranged along the circumference of the flow guide tube 1, and the excitation coil 21 is attached to the outer wall of the flow guide tube 1. The arrangement of the excitation coil 21 can establish a stable magnetic field.

[0052] Reference Figure 3 and Figure 4 The electromagnetic sensor 2 further includes a pole shoe plate 22, which is located between the excitation coil 21 and the outer wall of the flow guide tube 1. The excitation coil 21 contacts the pole shoe plate 22, and the pole shoe plate 22 fits the outer wall of the flow guide tube 1. The area of ​​the pole shoe plate 22 is the same as that of the excitation coil 21. Due to the arrangement of the pole shoe plate 22, the magnetic field generated by the excitation coil 21 can be guided toward the inside of the flow guide tube 1, which can optimize the magnetic field distribution.

[0053] Reference Figure 3 and Figure 4 The electromagnetic sensor 2 also includes a magnetic yoke plate 23, which is arranged along the circumference of the flow guide tube 1 in the length direction, and is located on the side of the excitation coil 21 away from the flow guide tube 1, and the magnetic yoke plate 23 is in conflict with the excitation coil 21. Both ends of the magnetic yoke plate 23 in the length direction extend beyond the side walls corresponding to the excitation coil 21, and both ends of the magnetic yoke plate 23 in the length direction are bent toward the direction of the flow guide tube 1 to form a bent portion 232, and the bent portion 232 is close to or in contact with the outer wall of the flow guide tube 1. The arrangement of the magnetic yoke plate 23 can guide the magnetic field inside the flow guide tube 1 out through the two bent portions 232 on the magnetic yoke plate 23, and then guide the magnetic field back to the excitation coil 21.

[0054] Therefore, refer to Figure 3 and Figure 4 By cooperating with the excitation coil 21 , the magnetic yoke plate 23 and the magnetic shoe, a stable magnetic field can be formed at a position of the flow guide tube 1 close to the excitation coil 21 .

[0055] Reference Figure 3 and Figure 4The electromagnetic sensor 2 further includes two electrodes 24, both of which are arranged on the outer wall of the flow guide tube 1, and the two electrodes 24 are arranged at intervals along the circumference of the flow guide tube 1, and the electrodes 24 are arranged toward the central axis of the flow guide tube 1, and the two electrodes 24 are located between the two bending portions 232, and the excitation coil 21 is located between the two electrodes 24, and the locking nut on the electrode 24 contacts the excitation coil 21, and the electrode 24 is arranged at intervals from the excitation coil 21. The arrangement of the electrode 24 realizes the detection function.

[0056] Reference Figure 3 and Figure 4 The electromagnetic sensor 2 establishes a stable magnetic field in the flow guide tube 1 through the coordinated arrangement of the excitation coil 21, the pole shoe plate 22 and the magnetic yoke plate 23, which can form a potential difference in the medium passing through the flow guide tube 1. Since the medium passing through the flow guide tube 1 forms a potential difference, the flow velocity and flow rate of the medium in the flow guide tube 1 can be detected by measuring through the electrodes 24 on both sides of the excitation coil 21. Since a single excitation coil 21 is used, the magnetic field in the flow guide tube 1 is close to the excitation coil 21, which makes the detection result of the electromagnetic sensor 2 more accurate when the flow rate in the flow guide tube 1 is larger.

[0057] Reference Figure 2 and Figure 4 The electromagnetic sensor 2 also includes a mounting bolt 25, which is coaxially arranged with the excitation coil 21 and is located inside the excitation coil 21. A first hole 221 is provided on the pole shoe plate 22, a second hole 231 is provided on the magnetic yoke plate 23, and a third hole 12 is provided on the outer wall of the flow guide tube 1. The first hole 221, the second hole 231 and the third hole 12 are all coaxially arranged, and the mounting bolt 25 is simultaneously plugged and matched with the first hole 221, the second hole 231 and the third hole 12, and the mounting bolt 25 is connected to the inner wall of the third hole 12 by threads. The excitation coil 21, the magnetic yoke plate 23 and the pole shoe plate 22 are fixed as a modular component by the mounting bolt 25, so that the excitation coil 21, the magnetic yoke plate 23 and the pole shoe plate 22 can be easily installed on the flow guide tube 1.

[0058] Reference Figure 2 The flow guide tube 1 is also provided with a pressure sensor 8, and the pressure sensor 8 is located in the installation space 71. A pressure measuring hole 13 is provided through the outer wall of the flow guide tube 1, and the pressure sensor 8 is plugged and matched with the pressure measuring hole 13, and the pressure sensor 8 is connected to the pressure measuring hole 13 by a thread. An O-ring or a flat gasket is provided between the pressure sensor 8 and the outer wall of the flow guide tube 1 for sealing. The pressure sensor 8 is electrically connected to the converter 3.

[0059] When the medium is introduced into the flow guide tube 1, the internal pressure of the flow guide tube 1 rises. At this time, when the pressure sensor 8 detects that the internal pressure of the flow guide tube 1 exceeds the preset value, the pressure sensor 8 transmits a signal to the converter 3, and the converter 3 starts the electromagnetic sensor 2 according to the signal of the pressure sensor 8. Therefore, the pressure sensor 8 can be used as a switch of the electromagnetic sensor 2, and then the electromagnetic sensor 2 is powered on when the electromagnetic sensor 2 needs to work, otherwise the electromagnetic sensor 2 is not powered on, which can reduce power consumption.

[0060] Reference Figure 2 and Figure 3 The converter 3 includes a rechargeable battery 31, a control component 32 and a magnetic charging seat 33. The battery capacity of the rechargeable battery 31 is not less than 20000mAh. The rechargeable battery 31 is adhered to the inner wall of the protective shell 7 by PVC double-sided tape, and the PVC double-sided tape achieves the fixation and shock absorption effect of the rechargeable battery 31. The magnetic charging seat 33 is set on the transparent plate 722, and the charging line can be connected through the magnetic charging seat 33 to realize the charging function. The control component 32 includes a circuit board, and the circuit board is fixed to the sealing cover 72 by screws, and the rechargeable battery 31, the magnetic charging seat 33, the pressure sensor 8, and the electromagnetic sensor 2 are all electrically connected to the circuit board, which can realize the charging of the rechargeable battery 31, the signal transmission of the pressure sensor 8, and the power supply and signal transmission of the electromagnetic sensor 2.

[0061] Reference Figure 2 and Figure 3 At least a measuring module, a remote transmission module, a positioning module and a display screen module are arranged on the circuit board. The measuring module collects the signal of the electromagnetic sensor 2 and the signal of the pressure sensor 8, and amplifies, filters, converts and processes them into flow data and pressure data, and uploads them to the platform through the remote transmission module; the positioning module can accurately locate the position of the water meter and display the exact position of the fire water meter on the platform; the display screen module can display the flow and pressure values, and is equipped with power and communication status indicator lights, which can be displayed to users more intuitively.

[0062] The implementation principle of the embodiment of the present application is: when using the fire water meter, the fire water meter is moved to the working position by the handle 73, and the fire quick-connect female connector 5 and the fire quick-connect male connector 4 of the fire water meter are connected to the corresponding fire equipment, and the fire water meter can work at this time. When the fire water meter is not in use, only the pressure sensor 8 is in the power-on state, and the electromagnetic sensor 2 is in the dormant state. When the fire water meter is used, the pressure sensor 8 detects the pressure change inside the guide tube 1, and the converter 3 starts the electromagnetic sensor 2, and the electromagnetic sensor 2 starts to work, performs flow detection, and displays the detection data on the display module.

[0063] The actual water capacity of the fire-fighting equipment and the low water level alarm value are preset in the converter 3. After the fire water meter has been used for a period of time, the converter 3 records the cumulative flow value and determines the remaining water volume by the difference between the actual water capacity and the cumulative flow value. When the remaining water volume is less than the low water level alarm value, the display module alarms, which makes it easy to monitor the remaining water volume in the fire-fighting equipment and to replenish the fire-fighting water in time.

[0064] This embodiment also discloses a method for manufacturing a portable fire water meter, comprising the following steps: S1. Manufacturing the flow guide tube 1, the base 6, the protective shell 7, the sealing cover 72, the fire-fighting quick-connect male connector 4 and the fire-fighting quick-connect female connector 5. Specifically, the flow guide tube 1, the base 6, the protective shell 7, the sealing cover 72, the fire-fighting quick-connect male connector 4 and the fire-fighting quick-connect female connector 5 are all machined or die-casted.

[0065] S2. Install the pressure sensor 8 and the electromagnetic sensor 2 into the protective housing 7.

[0066] S3. Install the converter 3 in the protective housing 7, and connect the pressure sensor 8, the electromagnetic sensor 2 and the converter 3 via wires.

[0067] S4, assemble the sealing cover 72, the fire quick-connect male connector 4 and the fire quick-connect female connector 5.

[0068] The implementation principle of the embodiment of the present application is to realize the production of the above-mentioned fire water meter.

[0069] Example 2: A portable fire water meter, referring to Figure 5 and Figure 6 The difference between this embodiment and the first embodiment is that a module shell 9 is provided on the side of the sealing cover 72 facing the air guide pipe 1 .

[0070] Reference Figure 6 and Figure 7 The module shell 9 is located in the installation space 71, and the module shell 9 is plugged into the inner wall of the protective housing 7. The sealing cover 72 is connected to the module shell 9 by bolts, and a module space 91 is opened in the module shell 9. The opening of the module shell 9 is located on the side of the module shell 9 facing the sealing cover 72, and the sealing cover 72 closes the opening of the module shell 9, and the converter 3 is installed in the module space 91.

[0071] When the converter 3 needs to be replaced or maintained, the several bolts between the sealing cover 72 and the protective housing 7 are removed, and the converter 3 can be directly taken out of the protective housing 7 by lifting the handle 73, which is convenient for the removal of the converter 3; or when the converter 3 needs to be installed, the converter 3 can be directly inserted into the protective housing 7, which is convenient for the installation of the converter 3. Therefore, such a structural setting modularizes the converter 3 through the cooperation of the module shell 9 and the sealing cover 72, which is convenient for the removal of the converter 3.

[0072] Reference Figure 7 and Figure 8 A positioning assembly 10 is provided between the module shell 9 and the inner side wall of the protective shell 7. The positioning assembly 10 includes a plurality of positioning columns 101. The plurality of positioning columns 101 are all provided on the inner side wall of the protective shell 7. The length direction of the positioning columns 101 is provided along the axial direction of the module shell 9, and the plurality of positioning columns 101 are provided at intervals in sequence along the circumferential direction of the module shell 9. A plurality of positioning slots 102 are provided on the outer side wall of the module shell 9. The positioning slots 102 are provided in a one-to-one correspondence with the positioning columns 101. When the module shell 9 is inserted into the protective shell 7, the positioning slots 102 are plugged and matched with the corresponding positioning columns 101, and the positioning columns 101 are slidably connected with the inner side wall of the positioning slots 102.

[0073] When the module shell 9 is inserted into the protective shell 7 , the positioning assembly 10 can position and guide the module shell 9 to prevent the module shell 9 from moving in the protective shell 7 .

[0074] Reference Figure 6 and Figure 8 A secondary seal 20 is provided in the protective housing 7. The secondary seal 20 includes a partition plate 201 and a mounting ring 202. The mounting ring 202 is located in the protective housing 7, and the outer wall of the mounting ring 202 is fixedly connected to the inner wall of the protective housing 7. The partition plate 201 is provided on a side of the mounting ring 202 away from the guide tube 1. The partition plate 201 closes the mounting ring 202, and the partition plate 201 and the mounting ring 202 are connected by bolts.

[0075] Due to the coordinated arrangement of the partition plate 201 and the mounting ring 202 , the mounting space 71 is divided into a first space 711 and a second space 712 , and the first space 711 and the second space 712 are independent of each other and not connected. The electromagnetic sensor 2 and the pressure sensor 8 are both located in the first space 711 , and the module shell 9 is located in the second space 712 .

[0076] Reference Figure 6 and Figure 8 Since the secondary seal 20 divides the installation space 71 into two independent spaces, when water enters the first space 711, the partition plate 201 can reduce the possibility of water entering the second space 712; similarly, when water enters the second space 712, the partition plate 201 can reduce the possibility of water entering the first space 711. This can reduce the possibility of damage to the electromagnetic sensor 2, the pressure sensor 8 and the converter 3 in the protective housing 7 due to water entering at the same time.

[0077] Reference Figure 6The secondary seal 20 further includes a sealing ring, which is located between the partition plate 201 and the mounting ring 202, and one side of the sealing ring in the thickness direction contacts the partition plate 201, and the other side contacts the mounting ring 202. The provision of the sealing ring can improve the sealing effect of the secondary seal 20.

[0078] Reference Figure 7 and Figure 8 A quick-connect assembly 30 is provided between the module shell 9 and the partition plate 201. The quick-connect assembly 30 includes a plurality of first interfaces 301, which are all provided on the side of the partition plate 201 facing the module shell 9, and the pressure sensor 8, the electrode 24 and the excitation coil 21 are provided in one-to-one correspondence with the plurality of first interfaces 301, and the pressure sensor 8, the electrode 24 and the excitation sensor are all electrically connected to the first interfaces 301 through wires. The quick-connect assembly 30 also includes a plurality of second interfaces 302, which are provided on the side of the module shell 9 facing the second partition plate 201, and the plurality of second interfaces 302 are all electrically connected to the converter 3 through wires. The first interface 301 and the second interface 302 are provided in one-to-one correspondence, and the first interface 301 is plugged in and matched with the corresponding second interface 302.

[0079] When the module shell 9 is inserted into the protective housing 7 , the first interface 301 is plugged into and matched with the corresponding second interface 302 , which facilitates the establishment of electrical connection between the converter 3 and the electromagnetic sensor 2 and the pressure sensor 8 .

[0080] Reference Figure 6 A battery box 92 is provided in the module shell 9, and the battery box 92 is electrically connected to the circuit board. The battery box 92 is fixedly connected to the inner wall of the module shell 9, and a battery socket 93 is provided through the module shell 9, and the battery socket 93 is connected to the battery box 92. The rechargeable battery 31 is plugged into the battery socket 93, and the rechargeable battery 31 is slidably connected to the inner wall of the battery box 92. When the rechargeable battery 31 is in place in the battery box 92, the rechargeable battery 31 is electrically connected to the circuit board.

[0081] By providing the battery box 92 , the rechargeable battery 31 can be replaced. When the rechargeable battery 31 is damaged or has problems, the module shell 9 can be pulled out of the protective shell 7 and replaced with a new rechargeable battery 31 .

[0082] Reference Figure 6 and Figure 7 The module shell 9 is provided with a sealing plate 94 on the outside, the sealing plate 94 is engaged with the battery socket 93, and the sealing plate 94 closes the battery socket 93, and the sealing plate 94 contacts the rechargeable battery 31. The setting of the sealing plate 94 can close the battery socket 93, improve the sealing performance of the module shell 9, and improve the stability of the rechargeable battery 31 fixed in the battery box 92.

[0083] The implementation principle of the embodiment of the present application is as follows: since the converter 3 is located in the module shell 9, the module shell 9 is plugged and matched with the protective shell 7, when the sealing cover 72 is removed, the entire converter 3 and the module shell 9 can be taken out of the protective shell 7. Such a structural setting modularizes the entire converter 3, and when the converter 3 is damaged or needs maintenance, it is convenient to replace the converter 3 in time, ensuring that the fire water meter can perform firefighting operations normally. At the same time, the waterproof performance of the fire water meter is improved by the matching setting of the module shell 9 and the partition plate 201.

[0084] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable fire water meter, characterized in that: include: A flow guide pipe (1), wherein one end of the flow guide pipe (1) is coaxially connected to a fire-fighting quick-connect male connector (4), and the other end of the flow guide pipe (1) is coaxially connected to a fire-fighting quick-connect female connector (5); An electromagnetic sensor (2), the electromagnetic sensor (2) being arranged on the flow guide tube (1); a pressure sensor (8), the pressure sensor (8) being arranged on the flow guide tube (1), the pressure sensor (8) being used to detect the internal pressure of the flow guide tube (1); The converter (3) comprises a control component (32) and a rechargeable battery (31), wherein the rechargeable battery (31) is electrically connected to the control component (32), and the rechargeable battery (31) is used for supplying power; the pressure sensor (8) and the electromagnetic sensor (2) are both electrically connected to the control component (32), and the control component (32) is used for receiving a signal sent by the pressure sensor (8), and controlling the electromagnetic sensor (2) to be turned on or off according to the signal sent by the pressure sensor (8).

2. A portable fire water meter according to claim 1, characterized in that: The electromagnetic sensor (2) comprises an excitation coil (21), a magnetic yoke (23) and two electrodes (24); the excitation coil (21) is attached to the outside of the flow guide tube (1); The magnetic yoke plate (23) is located on a side of the excitation coil (21) away from the flow guide tube (1), both ends of the magnetic yoke plate (23) in the length direction are bent towards the direction of the flow guide tube (1) to form a bent portion (232), and the excitation coil (21) is located between the two bent portions (232); The two electrodes (24) are arranged on the flow guide tube (1) at intervals along the length direction of the magnetic yoke plate (23); the two electrodes (24) are both located between the two bent portions (232); and the excitation coil (21) is located between the two electrodes (24).

3. A portable fire water meter according to claim 2, characterized in that: The electromagnetic sensor (2) further comprises a pole shoe plate (22), wherein the pole shoe plate (22) is located on a side of the excitation coil (21) facing the flow guide tube (1), the pole shoe plate (22) is in contact with the outer side of the flow guide tube (1), and the excitation coil (21) is in contact with the pole shoe plate (22).

4. A portable fire water meter according to claim 2, characterized in that: The electrode (24) and the excitation coil (21) are arranged at a distance.

5. A portable fire water meter according to claim 1, characterized in that: The outer side wall of the flow guide tube (1) is provided with a protective shell (7), and the opening of the protective shell (7) is located on a side of the protective shell (7) away from the flow guide tube (1); The electromagnetic sensor (2), the pressure sensor (8) and the converter (3) are all located in the protective housing (7); A sealing cover (72) is provided on the protective shell (7), the sealing cover (72) is detachably connected to the protective shell (7), and the sealing cover (72) closes the opening of the protective shell (7).

6. A portable fire water meter according to claim 5, characterized in that: A visual port (721) is formed through the sealing cover (72), and a transparent plate (722) is provided on the sealing cover (72), wherein the transparent plate (722) seals the visual port (721).

7. A portable fire water meter according to claim 5, characterized in that: The sealing cover (72) is provided with a handle (73).

8. A portable fire water meter according to claim 5, characterized in that: The converter (3) further comprises a magnetic charging seat (33), wherein the magnetic charging seat (33) is arranged on the sealing cover (72), and the magnetic charging seat (33) is electrically connected to the control component (32).

9. A portable fire water meter according to claim 1, characterized in that: The outer wall of the flow guide tube (1) is further provided with a base (6), the base (6) being fixedly connected to the outer wall of the flow guide tube (1), and a plurality of weight-reducing grooves (61) are provided on the base (6).

10. A method for manufacturing a portable fire water meter, used for manufacturing a portable fire water meter according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, manufacturing a flow guide tube (1), a base (6), a protective housing (7), a sealing cover (72), a fire-fighting quick-connect male connector (4), and a fire-fighting quick-connect female connector (5); S2, installing a pressure sensor (8) and an electromagnetic sensor (2) in the protective housing (7); S3, installing the converter (3) in the protective housing (7), and connecting the pressure sensor (8), the electromagnetic sensor (2) and the converter (3) via wires; S4, assemble the sealing cover (72), the fire quick-connect male connector (4), and the fire quick-connect female connector (5).

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