Non-magnetic NB-IoT (Narrow Band Internet of Things) water meter

Abstract

The utility model relates to the technical field of water meters, in particular to a non-magnetic NB-IoT (Narrow Band Internet of Things) water meter. The water flow detection assembly comprises a water meter shell connected with the peripheral side of the water meter pipe body; the rotating shaft is arranged in the radial direction of the water meter pipe body and rotationally connected with the water meter pipe body, and one axial end of the rotating shaft penetrates through a bottom plate of the water meter shell and then enters a shell cavity of the water meter shell; the pressing contact piece is arranged in a shell cavity of the water meter shell and is connected with the rotating shaft; the supporting frame is arranged in a shell cavity of the water meter shell; the crimping part is connected with the first position of the supporting frame, and when the pressing contact part rotates along with the rotating shaft to be in butt joint with the first position of the supporting frame, the crimping part is triggered by the pressing contact part to generate a detection signal; the impeller is arranged in the shell cavity of the water meter pipe body and connected with the rotating shaft, and the impeller is pushed by water flow to drive the rotating shaft to rotate. According to the non-magnetic NB-IoT water meter provided by the embodiment of the invention, when the crimping part of the water meter breaks down or is damaged, the maintenance operation is very simple and convenient.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of water meter technology, specifically a non-magnetic NB-IoT Internet of Things water meter. Background Art

[0002] A water meter is an instrument that measures water flow, mostly cumulative water flow, and is generally divided into two categories: volumetric water meters and velocity water meters. When selecting a water meter specification, you should first estimate the size and range of the flow rate normally used, and then choose the water meter with the specification that is closest to the value as the first choice.

[0003] The water meter has two measurement methods: pulse measurement and photoelectric induction measurement. The general principle of the pulse measurement method is: the rotation of the impeller is converted into a pulse signal (the specific form of the pulse signal can be varied), and then the number of impeller rotations is determined by the number of pulse signals, and finally the water flow is determined by the number of impeller rotations.

[0004] However, it is difficult to repair the existing pulse metering water meter when the component used to obtain the pulse signal fails or is damaged. Utility Model Content

[0005] In view of the shortcomings of the prior art, the embodiments of this specification propose a non-magnetic NB-IoT Internet of Things water meter that is easy to maintain, including:

[0006] water meter pipe body;

[0007] Water flow detection assembly, including:

[0008] A water meter housing connected to the outer peripheral side of the water meter tube body;

[0009] A rotating shaft is arranged along the radial direction of the water meter tube body and is rotatably connected to the water meter tube body, and one axial end of the rotating shaft passes through the bottom plate of the water meter shell and enters the shell cavity of the water meter shell;

[0010] A pressure contact member is arranged in the shell cavity of the water meter housing and connected to the rotating shaft;

[0011] A support frame is arranged in the shell cavity of the water meter shell;

[0012] A crimping member connected to the first position of the support frame, when the crimping member rotates along with the rotating shaft to dock with the first position of the support frame, the crimping member is triggered by the crimping member to generate a detection signal;

[0013] An impeller is arranged in the shell cavity of the water meter tube body and connected to the rotating shaft. The impeller is driven by the water flow to drive the rotating shaft to rotate;

[0014] A controller is disposed in the housing cavity of the water meter housing and is electrically connected to the crimping piece;

[0015] The NB-IoT communication module is arranged in the shell cavity of the water meter shell, and the controller is wirelessly connected to the monitoring terminal through the NB-IoT communication module.

[0016] Preferably, the water meter body comprises:

[0017] A main pipe section connected to a water flow detection component;

[0018] The water inlet section is connected to the axial first end of the main pipe section, and a connecting thread 1 is provided on the outer peripheral side of the water inlet section;

[0019] The water outlet section is connected to the second axial end of the main pipe section, and a second connecting thread is provided on the outer peripheral side of the water outlet section.

[0020] Preferably, the pressure contact element comprises:

[0021] The pressing plate has one end in the length direction connected to the rotating shaft, and the connection between the vertical side surface of the pressing plate and the bottom surface of the pressing plate is rounded.

[0022] Preferably, the support frame comprises:

[0023] An annular support plate is arranged around the rotating shaft, and the annular support plate is arranged below the pressing plate;

[0024] The support rod has a first axial end connected to the bottom of the annular support plate, and a second axial end of the support rod is detachably connected to the bottom plate of the water meter housing through a first connecting plate.

[0025] Preferably, the crimping member comprises:

[0026] The crimping piece housing is detachably connected to the bottom of the annular support plate via a second connecting plate;

[0027] A pressure sensor is arranged at the inner bottom of the shell cavity of the crimping part housing, and the pressure sensor is electrically connected to the controller;

[0028] The elastic body is partially disposed in the shell cavity of the crimping piece housing, and the first elastic end of the elastic body located in the shell cavity is connected to the pressure sensor;

[0029] The crimping body is connected to the second elastic end of the elastic body protruding from the shell cavity; and the annular support plate is provided with a hole cavity which is connected to the shell cavity of the crimping piece housing and allows the crimping body and part of the elastic body to enter.

[0030] Preferably, the crimping body is arranged in a hemispherical shape.

[0031] Preferably, the impeller comprises:

[0032] A shaft sleeve connected to the rotating shaft;

[0033] The blades are evenly distributed and connected to the outer peripheral side of the shaft sleeve.

[0034] Preferably, each blade is recessed toward the first direction.

[0035] Preferably, the impeller is provided with four blades.

[0036] Preferably, the water flow detection component further comprises:

[0037] A cover plate is arranged in the shell cavity of the water meter housing and is located above the rotating shaft;

[0038] The water flow display screen is connected to the cover plate, and the water flow display screen is electrically connected to the controller.

[0039] Beneficial Effects

[0040] For the non-magnetic NB-IoT Internet of Things water meter in the embodiment of the present specification, when the crimping parts of the water meter fail or are damaged, the maintenance personnel only need to open the shell cover of the water meter body first, and then take out the supporting frame and the crimping parts from the shell cavity of the water meter body, then remove the crimping parts from the supporting frame and replace them with new ones, and then install the supporting frame and the crimping parts back into the shell cavity of the water meter body, and finally close the shell cover of the water meter body, making the entire maintenance operation very simple.

[0041] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the structure of a non-magnetic NB-IoT Internet of Things water meter in the embodiments of this specification;

[0043] Figure 2 This is a schematic diagram of the structure of the water flow detection assembly and other components in the embodiments of this specification;

[0044] Figure 3 It is a schematic diagram of the structure of the crimping parts and other components in the embodiment of this specification;

[0045] Figure 4 It is a schematic diagram of the structure of the pressure contact element and other components in the embodiment of this specification;

[0046] Figure 5 It is a schematic diagram of the structure of the impeller and other components in the embodiments of this specification. DETAILED DESCRIPTION

[0047] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0048] Embodiment 1:

[0049] like Figure 1 , Figure 2 As shown, this embodiment provides a non-magnetic NB-IoT Internet of Things water meter, including: a water meter body 100 and a water flow detection component.

[0050] The water flow detection assembly includes: a water meter housing 200, a rotating shaft 300, a pressure contact member 400, a support frame 500, a pressure contact member 600, an impeller, a controller 700 and an NB-IoT communication module 800.

[0051] The water meter housing 200 is connected to the outer peripheral side of the water meter tube body 100. The water meter housing 200 includes a main housing and a housing cover, and the pressing contact member 400, the supporting frame 500, the pressing member 600 and the like are located in the housing cavity of the main housing.

[0052] The rotating shaft 300 is arranged along the radial direction of the water meter tube body 100 and is rotatably connected to the water meter tube body 100 , and one axial end of the rotating shaft 300 passes through the bottom plate of the water meter housing 200 and enters the housing cavity of the water meter housing 200 .

[0053] The pressure contact member 400 is disposed in the housing cavity of the water meter housing 200 and connected to the rotating shaft 300 .

[0054] The support frame 500 is disposed in the housing cavity of the water meter housing 200 .

[0055] The crimping member 600 is connected to the first position of the support frame 500 . When the pressing member 400 rotates with the rotating shaft 300 to dock with the first position of the support frame 500 , the pressing member 600 is triggered by the pressing member 400 to generate a detection signal.

[0056] The position where the crimping piece 600 is connected to the support frame 500 is the first position of the support frame 500. When the crimping piece 400 rotates to a certain position where it is located just above the first position of the support frame 500, it means that the crimping piece 400 is docked with the first position of the support frame 500, and at this time the crimping piece 400 just touches the crimping piece 600 so that the crimping piece 600 generates a detection signal. Assuming that the crimping piece 600 is a pressure sensor, when the crimping piece 400 touches the crimping piece 600, the crimping piece 600 will obtain a pressure value signal, and the pressure value signal will be used as a detection signal (i.e., a pulse signal). When the crimping piece 400 rotates to other positions, the crimping piece 400 does not contact the crimping piece 600, and the crimping piece 600 will not obtain a detection signal. The pressing member 400 rotates one circle with the rotating shaft 300 and can only dock with the first position of the supporting frame 500 once, and can only contact with the crimping member 600 once, so that the crimping member 600 finally obtains only one detection signal.

[0057] The impeller is disposed in the shell cavity of the water meter tube body 100 and connected to the rotating shaft 300 . The impeller is driven by the water flow to drive the rotating shaft 300 to rotate.

[0058] The controller 700 is disposed in the housing cavity of the water meter housing 200 and is electrically connected to the crimping member 600 .

[0059] The NB-IoT communication module 800 is arranged in the shell cavity of the water meter housing 200, and the controller 700 is wirelessly connected to the monitoring terminal through the NB-IoT communication module 800. Narrow Band Internet of Things (NB-IoT) is an important branch of the Internet of Everything. NB-IoT is built on a cellular network and only consumes about 180kHz of bandwidth. It can be directly deployed on a GSM network, UMTS network or LTE network, which can reduce deployment costs. The water meter of this embodiment is non-magnetic and will not interfere with the NB-IoT communication module 800.

[0060] The working principle of the water meter in this embodiment is:

[0061] When water flows through the water meter tube body 100, the water flow will drive the impeller to rotate; when the impeller rotates, it will drive the rotating shaft 300 to rotate circumferentially; when the rotating shaft 300 rotates circumferentially, it will drive the pressure contact member 400 to rotate synchronously in the circumferential direction; when the pressure contact member 400 rotates to the first position docking with the support frame 500, the pressure contact member 400 touches the crimping member 600 so that the crimping member 600 obtains the detection signal; the controller 700 can count the number of detection signals, and then determine the number of rotations of the impeller, and finally calculate the water flow rate according to the number of rotations of the impeller (specifically how to calculate the water flow rate according to the number of rotations of the impeller directly adopts the existing technology); the controller 700 will send the calculated water flow value to the monitoring terminal.

[0062] After the water meter is used for a long time, the crimping part 600 of the water meter may fail or be damaged. When the crimping part 600 of the water meter fails or is damaged, the maintenance personnel only need to open the shell cover of the water meter housing 200 first, then take out the support frame 500 and the crimping part 600 from the shell cavity of the water meter housing 200, then remove the crimping part 600 from the support frame 500 and replace it with a new crimping part 600, then install the support frame 500 and the crimping part 600 back into the shell cavity of the water meter housing 200, and finally close the shell cover of the water meter housing 200. The entire maintenance operation is very simple.

[0063] Further, such as Figure 2 As shown, the water meter pipe body 100 includes: a main pipe section 110, a water inlet section 120 and a water outlet section 130. The main pipe section 110 is connected to the water flow detection assembly. The water inlet section 120 is connected to the axial first end of the main pipe section 110, and the outer circumference of the water inlet section 120 is provided with a connecting thread 1. The water outlet section 130 is connected to the axial second end of the main pipe section 110, and the outer circumference of the water outlet section 130 is provided with a connecting thread 2.

[0064] When the water meter of this embodiment is installed with a water pipe, it is only necessary to thread the water inlet pipe to the water inlet section 120 of the water meter body 100, and then thread the water outlet pipe to the water outlet section 130 of the water meter body 100. The disassembly and assembly operation of the entire water meter is also very simple.

[0065] Further, such as Figure 3 and Figure 4 As shown, the pressure contact member 400 of this embodiment includes: a pressure plate. One end of the pressure plate in the length direction is connected and fixed to the rotating shaft 300, and the other end in the length direction is suspended. The connection between the two vertical side surfaces in the length direction of the pressure plate and the bottom surface of the pressure plate are both rounded.

[0066] like Figure 3 and Figure 4 As shown, the support frame 500 of this embodiment includes: an annular support plate 510 and a support rod 520 .

[0067] The annular support plate 510 is arranged around the rotating shaft 300, and the annular support plate 510 is arranged below the pressing plate. There is a certain gap between the top plate surface of the annular support plate 510 and the bottom plate surface of the pressing plate, so that the pressing plate will not interfere with the annular support plate 510 when rotating with the rotating shaft 300. The inner ring aperture of the annular support plate 510 needs to be set to a suitable value so that the inner ring hole of the annular support plate 510 can be fitted onto the rotating shaft 300 through the pressing plate.

[0068] The first axial end of the support rod 520 is connected and fixed to the bottom of the annular support plate 510, and the second axial end of the support rod 520 is detachably connected to the bottom plate of the water meter housing 200 through the first connecting plate. The first connecting plate and the support rod 520 are integrally formed, and a first connecting hole is provided on the first connecting plate. The first connecting plate can be connected and fixed to the bottom plate of the water meter housing 200 through a first connecting member (such as a screw). In this real-time example, two support rods 520 are provided on one annular support plate 510.

[0069] When the support frame 500 needs to be taken out from the shell cavity of the water meter housing 200, it is only necessary to first rotate and remove the two first connecting parts from the first connecting plate to separate the support rod 520 from the bottom plate of the water meter housing 200, and then slightly tilt the support frame 500 to remove the support frame 500 from the rotating shaft 300 and the pressure plate, and finally directly take the support frame 500 out of the shell cavity of the water meter housing 200, so that the disassembly and assembly operations of the support frame 500 and the water meter housing 200 are very simple.

[0070] Further, such as Figure 3 As shown, the crimping component 600 of this embodiment includes: a crimping component housing 610 , a pressure sensor 620 , an elastic body 630 and a crimping body 640 .

[0071] The crimping part housing 610 is detachably connected to the bottom of the annular support plate 510 via a second connecting plate. The second connecting plate is integrally formed with the crimping part housing 610, and a second connecting hole is provided on the second connecting plate. The second connecting plate can be connected and fixed to the annular support plate 510 via a second connecting member (such as a screw), thereby connecting and fixing the crimping part housing 610 to the annular support plate 510.

[0072] The pressure sensor 620 is arranged at the inner bottom of the shell cavity of the crimping housing 610, and the pressure sensor 620 is electrically connected to the controller 700. The crimping housing 610 is provided with a plug interface, and a plug connector is plugged into the connection line connected to the controller 700. When the plug connector is connected to the plug interface, the controller 700 is electrically connected to the pressure sensor 620.

[0073] The elastic body 630 is partially disposed in the shell cavity of the crimping housing 610, and the first elastic end of the elastic body 630 located in the shell cavity is connected to the pressure sensor 620. The rest of the elastic body 630 protrudes from the shell cavity of the crimping housing 610. The elastic body 630 can be a spring.

[0074] The crimping body 640 is connected to the second elastic end of the elastic body 630 protruding from the shell cavity. The annular support plate 510 is provided with a hole cavity that docks with the shell cavity of the crimping housing 610 and allows the crimping body 640 and part of the elastic body 630 to enter.

[0075] When the crimping part 600 is not connected to the annular support plate 510, the pressure sensor 620 and most of the elastic body 630 are located in the shell cavity of the crimping part housing 610, and a small part (for example, one fifth) of the elastic body 630 and the crimping body 640 are located outside the shell cavity of the crimping part housing 610. Since the pressure sensor 620 is fixedly connected to the crimping part housing 610, the elastic body 630 is fixedly connected to the pressure sensor 620, and the crimping body 640 is fixedly connected to the elastic body 630, the crimping body 640 and the elastic body 630 will not fall off the crimping part housing 610.

[0076] When the crimping member 600 needs to be connected to the annular support plate 510, it is only necessary to put the crimping body 640 protruding from the shell cavity of the crimping member housing 610 and part of the elastic body 630 into the hole cavity of the annular support plate 510, and then connect and fix the second connecting plate to the annular support plate 510 through the second connecting member. At this time, part of the crimping body 640 protrudes from the hole cavity of the annular support plate 510, that is, part of the crimping body 640 is higher than the top surface of the annular support plate 510.

[0077] When the pressing plate rotates to the first position to dock with the support frame 500, the pressing plate is just opposite to the crimping body 640 and just presses the crimping body 640 back into the cavity of the annular support plate 510. When the crimping body 640 is pressed downward, it will give a downward pressure to the elastic body 630, and then give a downward pressure to the pressure sensor 620. At this time, the pressure sensor 620 will detect a larger pressure value. For example, the pressure value detected by the pressure sensor 620 at this time may be 2V, while the pressure value detected by the pressure sensor 620 at other times may be 0.2V. In short, when the pressure sensor 620 detects a larger pressure value, it means that the crimping part 600 has obtained a detection signal.

[0078] like Figure 3 As shown, the crimping body 640 is arranged in a hemispherical shape. The hemispherical crimping body 640 and the pressing plate arranged in a rounded corner enable the pressing plate to press the crimping body 640 into the hole cavity of the annular support plate 510 very smoothly.

[0079] When the crimping component 600 needs to be removed from the support frame 500, it is only necessary to first detach the plug connector from the plug interface, then rotate and remove the second connecting component from the second connecting plate to separate the crimping component housing 610 from the annular support plate 510, and finally take away the entire crimping component 600, making the disassembly and assembly operations of the crimping component 600 and the support frame 500 also very simple.

[0080] Further, such as Figure 5 As shown, the impeller of this embodiment includes: a sleeve and blades 310.

[0081] The sleeve is connected and fixed to the rotating shaft 300. In this embodiment, the impeller is provided with four blades 310. The four blades 310 are evenly distributed and connected to the outer peripheral side of the sleeve. Each blade 310 is recessed in a first direction. The first direction here can be a clockwise direction around the rotating shaft 300. This setting enables the water flow to push the impeller to rotate in the first direction all the time, thereby making the water flow detection of the water meter more accurate.

[0082] Further, such as Figure 1 As shown, the water flow detection component of this embodiment further includes: a cover plate 210 and a water flow display screen 220.

[0083] The cover plate 210 is disposed in the housing cavity of the water meter housing 200 and is located above the rotating shaft 300. The water flow display screen 220 is connected to the cover plate 210, and the water flow display screen 220 is electrically connected to the controller 700. The housing cover of the water meter housing 200 is partially or completely transparent.

[0084] The water flow value calculated by the controller 700 can be directly displayed on the water flow display screen 220, so that the user can directly view the water consumption through the water meter. The cover plate 210 is detachably connected to the shell cavity of the water meter housing 200. For example, a support surface is provided on the inner circumference of the main shell of the water meter housing 200, and the cover plate 210 is directly placed on the support surface. When the cover plate 210 needs to be removed, it only needs to be moved upward until the cover plate 210 is taken out of the shell cavity, and the operation is still very simple.

[0085] The above embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall within the protection scope of the utility model, and the technical contents of the utility model for protection have been fully recorded in the claims.

Claims

1. A non-magnetic NB-IoT Internet of Things water meter, characterized in that: include: Water meter pipe body (100); Water flow detection assembly, including: A water meter housing (200) connected to the outer peripheral side of the water meter tube body (100); A rotating shaft (300) is arranged along the radial direction of the water meter tube body (100) and is rotatably connected to the water meter tube body (100), and one axial end of the rotating shaft (300) passes through the bottom plate of the water meter housing (200) and enters the housing cavity of the water meter housing (200); A pressure contact member (400) is arranged in the housing cavity of the water meter housing (200) and is connected to the rotating shaft (300); A support frame (500) is arranged in the housing cavity of the water meter housing (200); A crimping member (600) connected to a first position of the support frame (500), when the crimping member (400) rotates along with the rotating shaft (300) to dock with the first position of the support frame (500), the crimping member (600) is triggered by the crimping member (400) to generate a detection signal; an impeller, arranged in the shell cavity of the water meter tube body (100) and connected to the rotating shaft (300), wherein the impeller is driven by the water flow to drive the rotating shaft (300) to rotate; A controller (700) disposed in the housing cavity of the water meter housing (200) and electrically connected to the crimping component (600); The NB-IoT communication module (800) is arranged in the shell cavity of the water meter housing (200), and the controller (700) is wirelessly connected to the monitoring terminal via the NB-IoT communication module (800).

2. A non-magnetic NB-IoT Internet of Things water meter according to claim 1, characterized in that: The water meter tube body (100) comprises: A main pipe section (110) connected to the water flow detection component; A water inlet section (120) connected to the axial first end of the main pipe section (110), and a connecting thread 1 is provided on the outer peripheral side of the water inlet section (120); The water outlet section (130) is connected to the second axial end of the main pipe section (110), and a second connecting thread is provided on the outer peripheral side of the water outlet section (130).

3. The non-magnetic NB-IoT Internet of Things water meter according to claim 1, characterized in that: The pressure contact member (400) comprises: A pressing plate, one end of which in the length direction is connected to the rotating shaft (300), and a connection between the vertical side surface of the pressing plate and the bottom surface of the pressing plate is arranged in a rounded shape.

4. A non-magnetic NB-IoT Internet of Things water meter according to claim 3, characterized in that: The support frame (500) comprises: An annular support plate (510) is arranged around the rotating shaft (300), and the annular support plate (510) is arranged below the pressing plate; A support rod (520) has a first axial end connected to the bottom of the annular support plate (510), and a second axial end of the support rod (520) is detachably connected to the bottom plate of the water meter housing (200) via a first connecting plate.

5. A non-magnetic NB-IoT Internet of Things water meter according to claim 4, characterized in that: The crimping piece (600) comprises: A crimping piece housing (610) is detachably connected to the bottom of the annular support plate (510) via a second connecting plate; A pressure sensor (620) is arranged at the inner bottom of the housing cavity of the crimping component housing (610), and the pressure sensor (620) is electrically connected to the controller (700); An elastic body (630) is partially disposed in the housing cavity of the crimping piece housing (610), and a first elastic end of the elastic body (630) located in the housing cavity is connected to the pressure sensor (620); The crimping body (640) is connected to the second elastic end of the elastic body (630) protruding from the shell cavity; and the annular support plate (510) is provided with a hole cavity that docks with the shell cavity of the crimping piece housing (610) and allows the crimping body (640) and part of the elastic body (630) to enter.

6. The non-magnetic NB-IoT Internet of Things water meter according to claim 5, characterized in that: The crimping body (640) is arranged in a hemispherical shape.

7. The non-magnetic NB-IoT Internet of Things water meter according to claim 1, characterized in that: The impeller comprises: A shaft sleeve connected to the rotating shaft (300); Blades (310), a plurality of blades (310) are evenly distributed and connected to the outer peripheral side of the shaft sleeve.

8. The non-magnetic NB-IoT Internet of Things water meter according to claim 7, characterized in that: Each of the blades (310) is arranged to be recessed towards the first direction.

9. The non-magnetic NB-IoT Internet of Things water meter according to claim 8, characterized in that: The impeller is provided with four blades (310).

10. The non-magnetic NB-IoT Internet of Things water meter according to claim 1, characterized in that: The water flow detection component also includes: A cover plate (210) arranged in the housing cavity of the water meter housing (200) and located above the rotating shaft (300); The water flow display screen (220) is connected to the cover plate (210), and the water flow display screen (220) is electrically connected to the controller (700).

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