CN115457703A - A NB IoT Bluetooth prepaid valve-controlled water meter - Google Patents

Abstract

The present invention relates to the technical field of water control, in particular to a NB IoT Bluetooth prepaid valve-controlled water meter; including a water meter body, a substrate, a main control MCU, a Bluetooth module, a NB‑IOT wireless communication module, a valve control module, a power management module and Water-cooled heat dissipation mechanism, water-cooled heat dissipation mechanism includes heat absorbing plate, heat conduction column, heat dissipation fin, mounting base, water tank, water pump, heat exchange pipeline and semiconductor refrigerator, and uses heat conduction column to transport the heat generated by the electronic components on the substrate To the cooling fins on the heat-absorbing plate, start the semiconductor refrigerator, and after cooling the water in the water tank, start the water pump to transport the cold water in the water tank to the heat exchange pipeline, so that the cold water in the heat exchange pipeline and the heat dissipation The fins fully exchange heat, so that the heat dissipation fins maintain good heat dissipation performance, thereby avoiding the accumulation of heat in the water meter body, causing overheating and damage to the electronic components in the water meter body.

Description

A NB IoT Bluetooth prepaid valve-controlled water meter

technical field

The invention relates to the technical field of water control meters, in particular to an NB IoT Bluetooth prepaid valve-controlled water meter.

Background technique

At present, most of the prepaid water meters in the domestic market use IC cards as media to transmit data to realize the prepaid function. It is extremely inconvenient to require water users to pay at the business place designated by the water sales department.

In order to solve the above problems, the existing public patent (CN210109947U) discloses a prepaid IoT water meter based on Bluetooth payment, including a water meter body, a main control MCU, a Bluetooth module, a NB-IOT wireless communication module, a valve control module and a power management module. Module, the Bluetooth module can receive the payment information sent by the mobile terminal and feedback the payment result; the application of the NB-IOT wireless communication module can send the current information of the water meter to the main station system, and remotely control the water meter; the power management module can detect in real time In the running state of the battery, the main control MCU can open and close the ball valve in the water meter body according to relevant information and instructions. The water meter can not only realize remote control, but also realize Bluetooth payment and realize the opening and closing operation of the ball valve according to its own information or instructions, and the payment is simple and convenient.

When the existing prepaid IoT water meter based on Bluetooth payment is in use, the electronic components in the water meter body will heat up during the working process, and the existing prepaid IoT water meter based on Bluetooth payment is not equipped with a heat dissipation mechanism, which cannot To dissipate heat from the electronic components in the water meter body, the accumulation of heat in the water meter body may cause overheating and damage to the electronic components in the water meter body.

Contents of the invention

The purpose of the present invention is to provide a NB IoT Bluetooth prepaid valve-controlled water meter, which solves the problem that the prepaid IoT water meter based on Bluetooth payment in the prior art does not have a heat dissipation mechanism and cannot dissipate heat from the electronic components in the water meter body , The accumulation of heat in the water meter body may cause overheating and damage to the electronic components in the water meter body.

To achieve the above object, the present invention provides a NB IoT Bluetooth prepaid valve-controlled water meter, including a water meter body, a substrate, a main control MCU, a Bluetooth module, a NB-IOT wireless communication module, a valve control module, a power management module and a water cooling The heat dissipation mechanism, the inside of the water meter body is provided with the substrate, and the substrate is provided with the main control MCU, the Bluetooth module, the NB-IOT wireless communication module, the valve control module and the power supply A management module, the Bluetooth module, the NB-IOT wireless communication module, the valve control module and the power management module are all electrically connected to the main control MCU;

The water-cooling heat dissipation mechanism includes a heat absorbing plate, a heat conduction column, a heat dissipation fin, a mounting seat, a water tank, a water pump, a heat exchange pipeline and a semiconductor refrigerator. The heat absorbing plate is disassembled from the water meter body and is located On the outside of the water meter body, one side of the heat absorbing plate is provided with the heat dissipation fins, and the other side of the heat absorbing plate is provided with the heat conduction column, and the heat conduction column penetrates the shell of the water meter body, The end of the heat-conducting column away from the heat-absorbing plate is in contact with the heat-generating part of the substrate, and the installation base is fixed on the water pipe on which the water meter body is installed, and the water tank and the water tank are arranged on the installation base. The water pump, the water tank is provided with the semiconductor refrigerator, the input end of the water pump is connected to the water outlet pipe of the water tank, the output end of the water pump is provided with the heat exchange pipeline, and the heat exchange pipeline is The heat pipe is embedded between the gaps of the heat dissipation fins.

Wherein, the heat exchange pipeline includes a first connecting pipe, a serpentine coil and a second connecting pipe, one end of the serpentine coil is provided with the first connecting pipe, and the other end of the serpentine coil is The second connecting pipe is provided, the first connecting pipe is detachably connected to the output end of the water pump, and the end of the second connecting pipe away from the serpentine coil corresponds to the return pipe of the water tank.

Wherein, the mounting seat includes a mounting ring and a seat body, the mounting ring is sleeved on the outside of the water pipe on which the water meter body is installed, the seat body is detachably connected with the mounting ring, and is located at the center of the mounting ring. On the outside, the water tank and the water pump are arranged on the base.

Wherein, the installation ring includes a first half ring and a second half ring, the first half ring and the second half ring are respectively located on both sides of the outside of the water pipe where the water meter body is installed, and the first Both ends of the half-ring and the second half-ring are provided with connecting blocks, the connecting block on the first half-ring is bolted to the connecting block on the second half-ring, and the seat The body is detachably connected with the first half-ring, and is located on the side of the first half-ring away from the corresponding water pipe.

Wherein, the number of the heat conduction columns is multiple, each of the heat conduction columns includes a cylinder and silicone grease, the cylinder is arranged in a hollow structure, and the inner wall of the cylinder is coated with the silicone grease.

Wherein, the NB IoT Bluetooth prepaid valve-controlled water meter also includes a protection assembly, the protection assembly includes a dust-proof frame and an exhaust fan, and the dust-proof frame is disassembled and connected to the water tank, and is set on the semiconductor refrigerator The outside of the hot end of the dustproof frame, the exhaust fan is arranged inside the dustproof frame, and the exhaust fan is located at the end of the dustproof frame away from the water tank.

Wherein, the side of the dust-proof frame is provided with a plurality of cooling grooves, and the end of the dust-proof frame far away from the water tank is also provided with a protective cover.

A NB IoT Bluetooth prepaid valve-controlled water meter of the present invention includes a water meter body, a substrate, a main control MCU, a Bluetooth module, a NB-IOT wireless communication module, a valve control module, a power management module, and a water-cooling heat dissipation mechanism. The heat dissipation mechanism includes a heat absorbing plate, a heat conduction column, a heat dissipation fin, a mounting seat, a water tank, a water pump, a heat exchange pipeline and a semiconductor refrigerator, and the heat generated by the electronic components on the substrate is transported to the On the heat dissipation fins on the heat absorbing plate, start the semiconductor refrigerator, and after cooling the water in the water tank, start the water pump to deliver the cold water in the water tank to the heat exchange tube In the road, because the heat exchange pipeline is embedded between the gaps of the heat dissipation fins, the cold water in the heat exchange pipeline can fully exchange heat with the heat dissipation fins, so that the heat dissipation fins keep Good heat dissipation performance, adopting the above structure, can dissipate heat to the electronic components in the water meter body, thereby avoiding heat accumulation in the water meter body, causing overheating damage to the electronic components in the water meter body.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a functional block diagram of the NB IoT Bluetooth prepaid valve-controlled water meter according to the first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the NB IoT Bluetooth prepaid valve-controlled water meter according to the first embodiment of the present invention.

Fig. 3 is an enlarged view of the local structure at A in Fig. 2 provided by the present invention.

Fig. 4 is a schematic structural diagram of the water cooling mechanism in the first embodiment of the present invention.

Fig. 5 is an enlarged view of the partial structure at B of Fig. 4 provided by the present invention.

Fig. 6 is a partial structural schematic diagram of the water cooling mechanism in the second embodiment of the present invention.

FIG. 7 is an enlarged view of the partial structure at point C of FIG. 6 provided by the present invention.

Fig. 8 is a partial structural schematic diagram of the water cooling mechanism in the third embodiment of the present invention.

FIG. 9 is an enlarged view of the partial structure at D of FIG. 8 provided by the present invention.

101-water meter body, 102-substrate, 103-main control MCU, 104-bluetooth module, 105-NB-IOT wireless communication module, 106-valve control module, 107-power management module, 108-heat absorption plate, 109-heat conduction Column, 110-radiating fins, 111-mounting seat, 112-water tank, 113-water pump, 114-heat exchange pipeline, 115-semiconductor refrigerator, 116-first connecting pipe, 117-serpentine coil, 118- The second connecting pipe, 119-installation ring, 120-seat body, 121-first half ring, 122-second half ring, 123-connection block, 124-cylinder, 125-silicon grease, 201-dustproof frame, 202-exhaust fan, 203-radiation slot, 204-protective cover, 301-filter screen, 302-placement groove, 303-pull ring.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

First embodiment:

Please refer to Figures 1 to 5, wherein Figure 1 is a functional block diagram of the NB IoT Bluetooth prepaid valve-controlled water meter in the first embodiment, and Figure 2 is a structural schematic diagram of the NB IoT Bluetooth prepaid valve-controlled water meter in the first embodiment , FIG. 3 is an enlarged view of the local structure at A in FIG. 2 , FIG. 4 is a schematic structural view of the water cooling mechanism in the first embodiment, and FIG. 5 is an enlarged view of the local structure at B in FIG. 4 . The present invention provides a NB IoT Bluetooth prepaid valve-controlled water meter, including a water meter body 101, a substrate 102, a main control MCU 103, a Bluetooth module 104, an NB-IOT wireless communication module 105, a valve control module 106, a power management module 107 and a water cooling A heat dissipation mechanism, the water cooling heat dissipation mechanism includes a heat absorbing plate 108, a heat conducting column 109, a heat dissipation fin 110, a mounting seat 111, a water tank 112, a water pump 113, a heat exchange pipeline 114 and a semiconductor refrigerator 115, and the heat exchange pipeline 114 includes a first connecting pipe 116, a serpentine coil 117 and a second connecting pipe 118, the mounting seat 111 includes a mounting ring 119 and a seat body 120, and the mounting ring 119 includes a first half ring 121 and a second half ring 122.

For this specific embodiment, the inside of the water meter body 101 is provided with the substrate 102, and the substrate 102 is provided with the main control MCU 103, the Bluetooth module 104, the NB-IOT wireless communication module 105, the The valve control module 106 and the power management module 107, the Bluetooth module 104, the NB-IOT wireless communication module 105, the valve control module 106 and the power management module 107 are all electrically connected to the main control MCU103 The Bluetooth module 104 is used to receive the payment information sent by the mobile terminal, and the payment result can be fed back to the mobile terminal at the same time; the current information of the water meter can be sent to the master station system by using the NB-IOT wireless communication module 105, and To remotely control the water meter, the power management module 107 can detect the running state of the battery in the water meter body 101 in real time, and the main control MCU 103 can, according to the running state or detected abnormal information of the water meter or received valve control instructions, The valve control module 106 can open and close the ball valve in the water meter body 101. With the above structure, both remote control and Bluetooth payment can be realized. The information or the received valve control instruction realizes the opening and closing operation of the ball valve in the water meter body 101, and the payment method is simple and convenient.

Wherein, the heat absorbing plate 108 is disassembled and connected with the water meter body 101, and is located outside the water meter body 101, and the heat dissipation fin 110 is arranged on one side of the heat absorbing plate 108, and the heat absorbing plate The other side of 108 is provided with the heat conduction column 109 , the heat conduction column 109 runs through the shell of the water meter body 101 , and the end of the heat conduction column 109 away from the heat absorbing plate 108 and the heating place of the substrate 102 Fitted together, the mounting seat 111 is fixed on the water pipe on which the water meter body 101 is installed, the water tank 112 and the water pump 113 are arranged on the mounting seat 111, and the semiconductor Refrigerator 115, the input end of the water pump 113 is connected to the water outlet pipe of the water tank 112, the output end of the water pump 113 is provided with the heat exchange pipeline 114, and the heat exchange pipeline 114 is embedded in the Between the gaps of the heat dissipation fins 110, the heat generated by the electronic components on the substrate 102 is transferred to the heat dissipation fins 110 on the heat absorption plate 108 by the heat conduction column 109, and the The semiconductor refrigerator 115, after cooling the water in the water tank 112, starts the water pump 113 to deliver the cold water in the water tank 112 to the heat exchange pipeline 114, because the heat exchange pipeline 114 is embedded between the gaps of the heat dissipation fins 110, so that the cold water in the heat exchange pipeline 114 can fully exchange heat with the heat dissipation fins 110, so that the heat dissipation fins 110 maintain good heat dissipation performance, With the above structure, the electronic components in the water meter body 101 can be dissipated, so as to avoid heat accumulation in the water meter body 101 , causing overheating and damage to the electronic components in the water meter body 101 .

Secondly, one end of the serpentine coil 117 is provided with the first connecting pipe 116, and the other end of the serpentine coil 117 is provided with the second connecting pipe 118, and the first connecting pipe 116 and the The output end of the water pump 113 is disassembled and connected. The end of the second connecting pipe 118 away from the serpentine coil 117 corresponds to the return pipe of the water tank 112. The cold water in the water tank 112 passes through the first The connecting pipe 116 is transported to the inside of the serpentine coil 117, and after using the serpentine coil 117 to fully exchange heat with the cooling fins 110, the heat-exchanged water passes through the second connecting pipe 118. The water return pipe is delivered to the inside of the water tank 112, so as to complete cycle refrigeration.

At the same time, the installation ring 119 is sleeved on the outside of the water pipe on which the water meter body 101 is installed, and the seat body 120 is detachably connected with the installation ring 119 and is located outside the installation ring 119. 120 is provided with the water tank 112 and the water pump 113, after the installation ring 119 is sleeved on the outside of the water pipe on which the water meter body 101 is installed, the base body 120 is installed on the installation ring with screws. 119, thereby completing the installation of the mounting seat 111.

In addition, the first half-ring 121 and the second half-ring 122 are respectively located on both sides of the outside of the water pipe on which the water meter body 101 is installed, and the first half-ring 121 and the second half-ring Both ends are provided with connecting blocks 123, the connecting blocks 123 on the first half ring 121 are bolted to the connecting blocks 123 on the second half ring 122, and the seat body 120 is connected to the second half ring 122 by bolts. The half-ring 121 is disassembled and connected, and is located on the side of the first half-ring 121 away from the corresponding water pipe. After the first half-ring 121 and the second half-ring 122 are sleeved on the outside of the corresponding water pipe, The connecting block 123 on the first half ring 121 and the connecting block 123 on the second half ring 122 are fixed by bolts, so as to complete the installation of the installation ring 119 .

Since the number of the heat conduction columns 109 is multiple, each of the heat conduction columns 109 includes a cylinder 124 and a silicone grease 125, the cylinder 124 is arranged in a hollow structure, and the inner wall of the cylinder 124 is coated with There is the silicone grease 125 , and the heat of the electronic components on the substrate 102 is transferred to the heat absorbing plate 108 through the pillars 124 and the silicone grease 125 .

When using a NB IoT Bluetooth prepaid valve-controlled water meter of this embodiment, the Bluetooth module 104 is used to receive the payment information sent by the mobile terminal, and at the same time, the payment result can be fed back to the mobile terminal; the NB-IOT wireless communication is applied The module 105 can send the current information of the water meter to the main station system, and remotely control the water meter. The power management module 107 can detect the running state of the battery in the water meter body 101 in real time, and the main control MCU103 can Or the detected abnormal information of the water meter or the valve control instruction received, the valve control module 106 can open and close the ball valve in the water meter body 101, adopting the above structure, not only can realize remote control, but also realize Bluetooth To pay the fee, realize the opening and closing operation of the ball valve in the water meter body 101 according to the operating state of its own battery or the detected abnormal information of itself or the received valve control command. The heat generated by the electronic components on 102 is transported to the heat dissipation fins 110 on the heat absorbing plate 108, the semiconductor refrigerator 115 is started, and after the water in the water tank 112 is refrigerated, the The water pump 113 transports the cold water in the water tank 112 to the heat exchange pipeline 114. Since the heat exchange pipeline 114 is embedded between the gaps of the heat dissipation fins 110, the heat exchange The cold water in the pipeline 114 fully exchanges heat with the heat dissipation fins 110, so that the heat dissipation fins 110 maintain good heat dissipation performance. The above structure can dissipate heat from the electronic components in the water meter body 101, thereby avoiding The accumulation of heat in the water meter body 101 causes overheating and damage to the electronic components in the water meter body 101 .

Second embodiment:

On the basis of the first embodiment, please refer to FIG. 6 and FIG. 7 , FIG. 6 is a partial structural diagram of the water cooling mechanism in the second embodiment, and FIG. 7 is an enlarged view of a partial structure at point C in FIG. 6 . The present invention provides a NB IoT Bluetooth prepaid valve-controlled water meter which also includes a protection component, which includes a dustproof frame 201 and an exhaust fan 202 .

For this specific embodiment, the dustproof frame 201 is disassembled and connected to the water tank 112, and is covered outside the hot end of the semiconductor refrigerator 115, and the exhaust fan 202 is arranged inside the dustproof frame 201, The exhaust fan 202 is located at the end of the dust-proof frame 201 away from the water tank 112, and the dust-proof frame 201 is provided outside the hot end of the semiconductor refrigerator 115 to prevent dust from accumulating on the semiconductor refrigerator. 115 on the hot end, resulting in poor heat dissipation performance of the hot end of the semiconductor refrigerator 115, which in turn leads to a reduction in the cooling efficiency of the cold end of the semiconductor refrigerator 115, by setting the exhaust fan on the dustproof frame 201 202, using the exhaust fan 202 to take away the heat in the dust-proof frame 201, thereby reducing the temperature of the hot end of the semiconductor cooler 115, and then causing the temperature of the cold end of the semiconductor cooler 115 to decrease accordingly, thereby achieving lower temperature.

Wherein, the side of the dust-proof frame 201 is provided with a plurality of cooling grooves 203, and the end of the dust-proof frame 201 far away from the water tank 112 is also provided with a protective cover 204, through which the cooling groove 203 accelerates the heat dissipation between the outside world and the dust-proof frame 203. The air exchange rate in the dust frame 201, so that the heat in the dust frame 201 can be taken away more quickly by the exhaust fan 202, by setting the protective cover 204 on the dust frame 201, using the The protective cover 204 shields the exhaust fan 202, so as to prevent the user from accidentally touching the exhaust fan 202 and causing injury to the user.

When using a NB IoT Bluetooth prepaid valve-controlled water meter of this embodiment, the dust-proof frame 201 is provided outside the hot end of the semiconductor refrigerator 115 to prevent dust from accumulating on the semiconductor refrigerator 115 On the hot end of the semiconductor cooler 115, the heat dissipation performance of the hot end of the semiconductor cooler 115 is poor, and the cooling efficiency of the cold end of the semiconductor cooler 115 is reduced. By setting the exhaust fan 202 on the dustproof frame 201 , using the exhaust fan 202 to take away the heat in the dust-proof frame 201, thereby reducing the temperature of the hot end of the semiconductor refrigerator 115, and further reducing the temperature of the cold end of the semiconductor refrigerator 115, thereby achieving a higher temperature. The low temperature speeds up the air exchange rate between the outside world and the dust-proof frame 201 through the heat sink 203, so that the exhaust fan 202 can be used to take away the heat in the dust-proof frame 201 more quickly. The protective cover 204 is arranged on the dustproof frame 201, and the exhaust fan 202 is shielded by the protective cover 204, so as to prevent the user from accidentally touching the exhaust fan 202 and causing injury to the user.

Third embodiment:

On the basis of the second embodiment, please refer to Fig. 8 and Fig. 9, Fig. 8 is a partial structural diagram of the water-cooling heat dissipation mechanism in the third embodiment, and Fig. 9 is an enlarged view of the partial structure at D in Fig. 8 . The present invention provides a NB IoT Bluetooth prepaid valve-controlled water meter which also includes a plurality of filter screens 301 .

For this specific embodiment, placement slots 302 are arranged around the heat insulation frame, each placement slot 302 runs through the corresponding heat dissipation slot 203, and each placement slot 302 is provided with a The filter screen 301, by setting the filter screen 301 in the placement groove 302, the dust in the air is filtered by the filter screen 301, and dust is prevented from passing through the heat dissipation groove 203 and accumulating on the dustproof frame 201 The inside of the dust-proof frame 201 affects the hot end of the semiconductor refrigerator 115 .

Wherein, each of the filter screens 301 is provided with a pull ring 303 at one end away from the corresponding placement groove 302, and by setting the pull ring 303 on the filter screen 301, when the filter screen 301 is replaced, More convenient.

When using a NB IoT Bluetooth prepaid valve-controlled water meter of this embodiment, by setting the filter screen 301 in the placement tank 302, the filter screen 301 is used to filter the dust in the air, preventing dust from passing through the The heat sink 203 is accumulated inside the dust-proof frame 201, which affects the hot end of the semiconductor refrigerator 115 in the dust-proof frame 201, and by setting the puller on the filter screen 301 The ring 303 makes it more convenient to replace the filter screen 301.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the process for realizing the above embodiments, and according to the rights of the present invention The equivalent changes required still belong to the scope covered by the invention.

Claims (7)

1. A kind of NB IoT bluetooth prepaid valve-controlled water meter, comprising water meter body, substrate, main control MCU, bluetooth module, NB-IOT wireless communication module, valve control module and power management module, the inside of described water meter body is provided with The substrate, the main control MCU, the Bluetooth module, the NB-IOT wireless communication module, the valve control module and the power management module are arranged on the substrate, the Bluetooth module, the NB -IOT wireless communication module, the valve control module and the power management module are all electrically connected to the main control MCU, characterized in that, It also includes a water cooling mechanism; The water-cooling heat dissipation mechanism includes a heat absorbing plate, a heat conduction column, a heat dissipation fin, a mounting seat, a water tank, a water pump, a heat exchange pipeline and a semiconductor refrigerator. The heat absorbing plate is disassembled from the water meter body and is located On the outside of the water meter body, one side of the heat absorbing plate is provided with the heat dissipation fins, and the other side of the heat absorbing plate is provided with the heat conduction column, and the heat conduction column penetrates the shell of the water meter body, The end of the heat-conducting column away from the heat-absorbing plate is in contact with the heat-generating part of the substrate, and the installation base is fixed on the water pipe on which the water meter body is installed, and the water tank and the water tank are arranged on the installation base. The water pump, the water tank is provided with the semiconductor refrigerator, the input end of the water pump is connected to the water outlet pipe of the water tank, the output end of the water pump is provided with the heat exchange pipeline, and the heat exchange pipeline is The heat pipe is embedded between the gaps of the heat dissipation fins. 2. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 1, characterized in that, The heat exchange pipeline includes a first connecting pipe, a serpentine coil and a second connecting pipe, one end of the serpentine coil is provided with the first connecting pipe, and the other end of the serpentine coil is provided with The second connecting pipe and the first connecting pipe are detachably connected to the output end of the water pump, and the end of the second connecting pipe away from the serpentine coil corresponds to the return pipe of the water tank. 3. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 1, characterized in that, The mounting base includes a mounting ring and a seat body, the mounting ring is sleeved on the outside of the water pipe on which the water meter body is installed, the seat body is detachably connected to the mounting ring, and is located outside the mounting ring, The water tank and the water pump are arranged on the base body. 4. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 3, characterized in that, The installation ring includes a first half ring and a second half ring, the first half ring and the second half ring are respectively located on both sides of the outside of the water pipe on which the water meter body is installed, and the first half ring Both ends of the second half-ring are provided with connecting blocks, the connecting block on the first half-ring is bolted to the connecting block on the second half-ring, and the base and The first half-ring is disassembled and located on a side of the first half-ring away from the corresponding water pipe. 5. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 1, characterized in that, There are multiple heat conduction pillars, and each heat conduction pillar includes a cylinder and silicone grease, the cylinder is arranged in a hollow structure, and the inner wall of the cylinder is coated with the silicone grease. 6. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 1, characterized in that, The NB IoT Bluetooth prepaid valve-controlled water meter also includes a protection assembly, which includes a dust-proof frame and an exhaust fan. The outside of the end, the inside of the dust-proof frame is provided with the exhaust fan, and the exhaust fan is located at the end of the dust-proof frame away from the water tank. 7. The NB IoT Bluetooth prepaid valve-controlled water meter as claimed in claim 6, characterized in that, The side of the dust-proof frame is provided with a plurality of cooling grooves, and the end of the dust-proof frame away from the water tank is also provided with a protective cover.

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