Low-power consumption intelligent turbine flowmeter convenient to maintain

Abstract

The present application relates to the technical field of turbine flowmeter, and discloses a low-power intelligent turbine flowmeter convenient to maintain.The present application comprises a pipeline and a shell, a turbine, a magnetic resistance sensor and an annular electromagnet.The turbine adopts a two-section structure, comprising an inner blade section and an outer rotating section.The pipeline is provided with an annular slot corresponding to the outer rotating section, and the outer circle of the pipeline is provided with an annular convex ring corresponding to the annular slot.A mark magnet is embedded on the turbine corresponding to the magnetic resistance sensor.The magnetic resistance sensor senses the position of the mark magnet and outputs an electric signal when the turbine rotates, thereby realizing flow measurement.A plurality of vibrating permanent magnets are embedded on the turbine corresponding to the annular electromagnet.An alternating magnetic field is generated by passing a low-frequency pulse current through the annular electromagnet, and the magnetic field alternately attracts and repels the vibrating permanent magnets, so that the turbine produces small amplitude vibration and dithering, thereby realizing self-cleaning in cooperation with medium flow.The present application solves the problems of inconvenient maintenance and lack of self-cleaning function of the existing flowmeter.

Description

Technical Field

[0001] This invention relates to the field of turbine flow meter technology, and in particular to a low-power intelligent turbine flow meter that is easy to maintain. Background Technology

[0002] Turbine flow meters are widely used flow measurement instruments in petroleum, chemical, water supply and drainage industries. They detect flow by rotating a turbine under the action of fluid, in conjunction with a magnetoelectric sensing element. However, during long-term use, impurities and dirt easily accumulate on the impeller and inner walls of the flow channel in traditional turbine flow meters, leading to increased rotational resistance and decreased measurement accuracy. This typically requires shutdown, disassembly, and cleaning, making maintenance cumbersome.

[0003] Meanwhile, most existing turbine flow meters have an integral housing structure, with the sensor and excitation components encapsulated within a housing that cannot be quickly disassembled. If electronic component failure or impeller wear occurs, the entire housing must be disassembled or even cut, resulting in high maintenance costs and long downtime. Furthermore, existing flow meters require disassembly and maintenance after a considerable period of use, leading to frequent operation and repair due to the short maintenance cycle.

[0004] Therefore, there is an urgent need for an intelligent turbine flow meter that is easy to disassemble and maintain, consumes little power, and has a self-cleaning function. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a low-power intelligent turbine flow meter that is easy to maintain.

[0006] The present invention is achieved by the following technical solution, including a pipe and a shell, a turbine, a magnetoresistive sensor, and an annular electromagnet. The turbine adopts a two-section structure, including an inner blade segment and an outer rotating segment. The outer rotating segment is located between the pipe and the inner blade segment and serves as the rotating component of the turbine impeller. The pipe is provided with an annular groove corresponding to the outer rotating segment, and the outer ring of the pipe is provided with an annular convex ring corresponding to the annular groove. The magnetoresistive sensor is housed within the casing and fitted onto the pipe. A marker magnet is embedded on the turbine corresponding to the magnetoresistive sensor. When the turbine rotates, the magnetoresistive sensor senses the position of the marker magnet and outputs an electrical signal for flow measurement. The annular electromagnet is housed within the casing and fitted onto the pipe. Several vibrating permanent magnets are embedded on the turbine corresponding to the annular electromagnet. By passing a low-frequency pulse current through the annular electromagnet, an alternating magnetic field is generated. The magnetic field alternately attracts and repels the vibrating permanent magnets, causing the turbine to vibrate and shake slightly, thus achieving self-cleaning in conjunction with the flow of the medium.

[0007] Preferably, the outer rotating section is embedded with an annular shielding layer, and the outer rotating section makes rotational contact with the pipeline to realize the rotation of the turbine inside the pipeline; by setting the magnetically shielded outer rotating section, the annular electromagnet and the magnetoresistive sensor are isolated to avoid mutual interference between the two, so as to ensure the normal operation of the metering and self-cleaning functions.

[0008] Preferably, the housing is fixedly fitted onto the pipe. The housing is divided into a receiving part and a sealing part. The receiving part has a side U-shaped cross-section, and the sealing part is disc-shaped and closes the opening of the receiving part. The pipe is divided into a receiving part and a clamping part at the annular groove position. The receiving part is used to receive the outer rotating section, and the clamping part seals against the receiving part and restricts the outer rotating section within the annular groove. The receiving part is fixedly fitted onto the receiving part, and the sealing part is fixedly fitted onto the clamping part. By assembling the two parts of the housing and the two parts of the pipe, the overall turbine flow meter can be assembled. During maintenance, it can be disassembled to repair and replace the magnetoresistive sensor and annular electromagnet inside the housing. At the same time, the turbine inside the pipe can be extracted for repair and replacement.

[0009] Preferably, the sealing part and the receiving part are fixed by several locking structures. The receiving part is surrounded by several positioning posts, and the sealing part has several positioning slots corresponding to these positioning posts. The locking structure includes a base fixed to the sealing part, a quick-release protrusion rotatably mounted on the base, a control handle fixedly mounted on the quick-release protrusion, a limit hook fixedly mounted on the receiving part, and a long U-shaped thin rod corresponding to the limit hook on the quick-release protrusion. The long U-shaped thin rod is hooked onto the limit hook and rotatably connected to the quick-release protrusion. A positioning pin is provided between the control handle and the base. After the long U-shaped thin rod hooks onto the limit hook, it is limited by the quick-release protrusion, quickly achieving a sealing and fixing between the receiving part and the sealing part, providing a clamping effect. The positioning pin is provided for auxiliary fixing, ensuring the overall sealing and fixing stability of the device under long-term working conditions.

[0010] Preferably, a labyrinth seal structure and a sealing ring are provided between the receiving part and the pressing part. Both the receiving part and the pressing part are provided with corresponding sealing rings and receiving grooves that are interference fit with them. When the receiving part and the pressing part are pressed together, the labyrinth seal structure and the sealing ring are used to ensure the contact sealing between the two, thereby avoiding leakage points of the medium due to the structural design of the two parts. At the same time, the rotating structure of the outer ring rotating section placed in the pipeline does not affect the sealing of the pipeline.

[0011] Preferably, the pipeline is further provided with two sets of flow guiding structures, which are respectively arranged on the front and rear sides of the turbine. Each set of flow guiding structures includes several annularly arranged flow guiding vanes. The turbine is provided with a central shaft, and both ends of the central shaft extend and are fixedly connected to several flow guiding vanes. When the medium flows, the several flow guiding vanes are used to guide and conduct the transported medium, so that the medium flows into the turbine smoothly and evenly, reducing the impact of medium disturbance on the turbine rotation.

[0012] Preferably, the inner wall of the annular slot is provided with two annular wear-resistant bushings corresponding to the outer ring rotating section. The outer ring rotating section and the annular wear-resistant bushings are in sliding fit. The annular wear-resistant bushings are detachably embedded in the side wall of the outer ring rotating section and can be removed and replaced as the turbine is disassembled and assembled. The inner wall of the annular wear-resistant bushing is provided with a lubrication groove for storing lubricating medium, reducing frictional loss between the outer ring rotating section and the annular wear-resistant bushings, and extending the service life of the turbine.

[0013] Preferably, the housing is further provided with a low-power control module, which is electrically connected to the magnetoresistive sensor and the ring electromagnet respectively. The low-power control module is provided with a battery power supply module, which is external and adopts a screw-on structure, and can be replaced separately without damaging the housing seal.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a magnetoresistive sensor and a ring electromagnet, along with the marking magnet and permanent magnet embedded in the turbine, flow measurement and self-cleaning functions can be achieved. At the same time, the turbine adopts a two-section structure and is equipped with an outer magnetic shielding layer, which not only ensures smooth rotation but also effectively isolates the ring electromagnet and the magnetoresistive sensor to avoid magnetic field interference. The measurement accuracy and self-cleaning effect do not affect each other.

[0015] To facilitate maintenance and disassembly, the turbine's structure features a split assembly design for both the housing and piping. This design, coupled with a quick-release locking mechanism, allows for rapid disassembly and assembly without the need for specialized tools. This facilitates the inspection and replacement of internal sensors, electromagnets, and the turbine, significantly reducing maintenance difficulty and downtime. Furthermore, the piping sections employ a double-seal structure with a labyrinth seal and sealing ring, ensuring no leakage of high-pressure fluids while maintaining detachability, thus balancing maintainability and sealing reliability.

[0016] The self-cleaning structure adopts a low-frequency pulse driven electromagnetic vibration self-cleaning method, combined with fluid flushing to achieve online turbine descaling without the need for machine shutdown and disassembly, extending the continuous working cycle. It is equipped with a low-power control module and an external screw-top battery compartment, resulting in low overall power consumption. The battery can be replaced independently without damaging the housing seal, improving the instrument's battery life and protection level. Attached Figure Description

[0017] Figure 1This is an overall view of the low-power intelligent turbine flow meter of the present invention, which is easy to maintain; Figure 2 Another perspective view of the low-power intelligent turbine flow meter of the present invention, which is easy to maintain; Figure 3 This is a partial cross-sectional view of the low-power intelligent turbine flow meter of the present invention, which is easy to maintain. Figure 4 This is a disassembled view of the low-power intelligent turbine flow meter of the present invention, which is easy to maintain. Figure 5 An exploded view of the structure of the low-power intelligent turbine flow meter of the present invention, which is easy to maintain; Figure 6 This is a structural diagram showing the sealing section and the sealing section; Figure 7 This is a structural diagram of the turbine; Figure 8 This is a structural diagram illustrating the locking mechanism.

[0018] Explanation of key symbols: 100. Pipe; 200. Housing; 300. Turbine; 400. Magnetoresistive sensor; 500. Ring electromagnet; 600. Low-power control module; 601. Battery-powered module; 101. Receiving part; 102. Pressing part; 103. Guide vane; 104. Sealing ring; 201. Receiving part; 202. Sealing part; 203. Positioning post; 204. Positioning pin; 205. Base; 206. Quick-release protrusion; 207. Control handle; 208. Limiting hook; 209. Long U-shaped thin rod; 301. Inner blade segment; 302. Outer ring rotating section; 303. Central shaft; 304. Ring wear-resistant bushing. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] Please combine Figures 1 to 8 A low-power intelligent turbine flow meter that is easy to maintain includes a pipe 100, a housing 200, a turbine 300, a magnetoresistive sensor 400, and an annular electromagnet 500. It is widely used in flow measurement scenarios for conventional fluids such as tap water, petroleum, and chemicals.

[0021] The turbine 300 adopts a two-section split structure, which is convenient for individual disassembly and maintenance. It includes an inner blade section 301 and an outer rotating section 302. The inner blade section 301 has 9 blades, which are set in a spiral shape to reduce fluid resistance while ensuring flow sensitivity. The outer rotating section 302 is located between the pipe 100 and the inner blade section 301. As the core rotating component of the turbine impeller, it bears the rotational support function of the turbine 300.

[0022] The pipe 100 has an annular groove corresponding to the outer ring rotating section 302, and the outer ring of the pipe 100 has an annular protrusion integrally formed with the corresponding annular groove, which is used to assemble and position the turbine 300 and prevent the turbine 300 from sliding axially in the pipe 100.

[0023] The magnetoresistive sensor 400 is a low-power model, fixedly installed inside the housing 200 and sleeved on one side of the annular convex ring of the pipe 100 with a clamp. A marker magnet is embedded on the turbine 300 at the position corresponding to the magnetoresistive sensor 400. The marker magnet is a neodymium iron boron permanent magnet, flush with the surface of the turbine 300, and does not affect the fluid flow. When the turbine 300 rotates under the push of the fluid, the magnetoresistive sensor 400 senses the position change of the marker magnet in real time and outputs a pulse electrical signal for each rotation. After receiving the pulse signal, the low-power control module 600 calculates the fluid flow rate according to the preset algorithm and can upload it to the terminal device through the built-in communication module to realize real-time flow monitoring.

[0024] The annular electromagnet 500 adopts an annular wound coil structure, fixedly installed inside the housing 200 and sleeved on the pipe 100, symmetrically distributed on both sides of the annular convex ring with the magnetoresistive sensor 400, with a distance of not less than 50mm between them to further avoid magnetic field interference. Four vibrating permanent magnets are evenly embedded on the turbine 300 at positions corresponding to the annular electromagnet 500. The vibrating permanent magnets are made of the same material as the marked magnets and are distributed in a ring on the inner wall of the outer rotating section 302, with the embedding depth consistent with the wall thickness of the outer rotating section 302, without affecting its rotational performance. During operation, the low-power control module 203 controls the annular electromagnet 500 to receive a low-frequency pulse current of 1-5Hz, generating an alternating magnetic field. The magnetic field alternately attracts and repels the vibrating permanent magnets, causing the turbine 300 to produce small vibrations and shaking. Combined with the flow of the medium in the pipe 100, this achieves self-cleaning of the turbine 300 blades and the inner wall of the pipe 100, effectively removing attached scale and impurities, preventing impurity accumulation that could cause turbine rotation jamming and decreased metering accuracy.

[0025] An annular shielding layer is embedded in the outer rotating section 302 and is integrally injection molded with the outer rotating section 302. The outer rotating section 302 makes rotational contact with the annular grooved inner wall of the pipe 100, so as to realize the smooth rotation of the turbine 300 in the pipe 100. By setting the magnetic shielding of the outer rotating section 302, the alternating magnetic field generated by the annular electromagnet 500 can be effectively isolated from the magnetoresistive sensor 400, avoiding mutual interference between the two, ensuring the accuracy of flow measurement and the normal operation of the self-cleaning function. The measurement accuracy is not affected by the self-cleaning action.

[0026] The housing 200 is fixedly sleeved on the pipe 100. The housing 200 is divided into a receiving part 201 and a sealing part 202. The receiving part 201 has a side U-shaped cross-section with the opening facing the abutment part 102, which facilitates the installation of the internal magnetoresistive sensor 400 and annular electromagnet 500. The inner wall of the receiving part 201 is provided with a rubber buffer pad to prevent damage caused by collision between the components and the housing. The sealing part 202 is disc-shaped and matches the size of the open opening of the receiving part 201. It is used to seal the open opening of the receiving part 201. The pipe 100 is divided into annular slots. The receiving part 101 and the clamping part 102 are integrally formed parts of the pipe 100. The inner diameter of the receiving part 101 is the same as the inner diameter of the main body of the pipe 100, and it is used to receive the outer ring rotating section 302. The end of the clamping part 102 is provided with a stepped structure, which seals against the end of the receiving part 101 and restricts the outer ring rotating section 302 in the annular groove to prevent the turbine 300 from moving axially. The sealing part 202 is fixedly sleeved on the receiving part 201 by a locking structure, which also restricts the receiving part 101 and the clamping part 102.

[0027] By assembling the two parts of the housing 200 and the two parts of the pipe 100, the overall turbine flow meter can be assembled quickly. During maintenance, it can be disassembled in reverse without cutting the pipe or damaging the housing. The magnetoresistive sensor 400 and the annular electromagnet 500 inside the housing 200 can be repaired, calibrated or replaced. At the same time, the turbine 300 inside the pipe 100 can be directly extracted for cleaning, repair or replacement, which greatly reduces the difficulty of maintenance and downtime, and improves maintenance efficiency.

[0028] The sealing part 202 and the receiving part 201 are fixed by six sets of evenly surrounding locking structures to ensure uniform fixing force. The receiving part 201 is surrounded by six positioning posts 203, which has a foolproof effect. The sealing part 202 is provided with six positioning slots corresponding to the six positioning posts 203. The size of the positioning slots matches the positioning posts 203. During assembly, the positioning posts 203 are inserted into the positioning slots to achieve quick positioning of the receiving part 201 and the sealing part 202, avoiding misalignment during assembly and affecting the sealing effect.

[0029] The locking structure includes a base 205 fixed to the sealing part 202. A quick-release protrusion 206 is rotatably mounted on the base 205 via a pin. A control handle 207 is integrally formed on the quick-release protrusion 206. The control handle 207 has anti-slip textures for easy gripping and operation. A limit hook 208 is welded and fixed to the receiving part 201. The limit hook 208 is L-shaped. A long U-shaped thin rod 209 is provided on the quick-release protrusion 206 corresponding to the limit hook 208. The long U-shaped thin rod 209 is made of stainless steel. The long U-shaped thin rod 209 is hung on the limit hook 208 and rotatably connected to the quick-release protrusion 206 via a pivot. A positioning pin 204 is provided between the control handle 207 and the base 205 for auxiliary fixation. The positioning pin 204 is an elastic pin that can be quickly inserted and removed.

[0030] During assembly, hook the long U-shaped thin rod 209 onto the limiting hook 208, and turn the control handle 207 to rotate the quick-release protrusion 206 until it fits against the end face of the receiving part 201, achieving a quick seal and fixation between the receiving part 201 and the sealing part 202, providing a good clamping effect. Insert the positioning pin 204 to limit the control handle 207, preventing the quick-release protrusion 206 from loosening and ensuring the sealing and fixing stability of the entire device under long-term working conditions. During disassembly, pull out the positioning pin 204 and turn the control handle 207 in the opposite direction to release the long U-shaped thin rod 209, quickly separating the receiving part 201 and the sealing part 202. No special tools are required, making the operation convenient.

[0031] A labyrinth sealing structure and a sealing ring 104 are provided between the receiving part 101 and the pressing part 102. The labyrinth sealing structure consists of an annular protrusion at the end of the receiving part 101 and an annular groove at the end of the pressing part 102. The annular protrusion and the annular groove interlock to form multiple sealing barriers. Both the receiving part 101 and the pressing part 102 are provided with corresponding sealing rings 104 and have receiving grooves that are interference-fitted with them to ensure that the sealing rings 104 fit tightly without gaps after installation.

[0032] When the receiving part 101 and the pressing part 102 are pressed together, the labyrinth seal structure can block most of the fluid leakage. The sealing ring 104 further seals the remaining gap. The double sealing structure is used to ensure the contact sealing between the two parts, thereby avoiding leakage points of the medium due to the structural design of the two parts. At the same time, the rotating structure of the outer ring rotating section 302 placed in the pipe 100 does not affect the sealing of the pipe 100, ensuring the accuracy of measurement and the safety of use.

[0033] Two sets of flow guiding structures are also installed inside the pipe 100. The two sets of flow guiding structures are respectively set on the front and rear sides of the turbine 300 and welded to the inner wall of the pipe 100. Each set of flow guiding structures includes several annularly evenly arranged flow guiding plates 103. The flow guiding plates 103 are made of stainless steel. The turbine 300 is equipped with a central shaft 303. When the medium flows, the flow guiding plates 103 are used to guide and conduct the transported medium, sort out the turbulent flow field, and make the medium flow into the turbine 300 smoothly and evenly. This reduces the impact of medium disturbance on the rotation of the turbine 300, avoids the turbine 300 from shaking or jamming, ensures the turbine 300 rotates smoothly, and further improves the accuracy of flow measurement.

[0034] Two annular wear-resistant bushings 304 are provided on the inner wall of the annular slot corresponding to the outer ring rotating section 302. The annular wear-resistant bushings 304 are made of polytetrafluoroethylene, which has good wear resistance and self-lubricating properties. The outer ring rotating section 302 and the annular wear-resistant bushings 304 slide in fit with a clearance of 0.1mm to ensure smooth rotation without obvious shaking. The annular wear-resistant bushings 304 are detachably embedded in the side wall of the outer ring rotating section 302 and can be removed and replaced as the turbine 300 is disassembled and assembled. The replacement of the wear-resistant bushings can be completed without disassembling the pipe 100, making maintenance convenient.

[0035] The inner wall of the annular wear-resistant bushing 304 is uniformly provided with several arc-shaped lubrication grooves for storing lubricating media (such as grease), reducing frictional loss between the outer ring rotating section 302 and the annular wear-resistant bushing 304, reducing rotational resistance, and extending the service life of the turbine 300.

[0036] The housing 200 is also equipped with a low-power control module 600. The low-power control module 600 uses a single-chip microcomputer and integrates functions such as flow calculation, electromagnet control, and data communication. The low-power control module 600 is electrically connected to the magnetoresistive sensor 400 and the ring electromagnet 500 through wires. The wires are shielded to further avoid electromagnetic interference. The low-power control module 600 is equipped with a battery power supply module 601, which uses a lithium battery.

[0037] The battery power supply module 601 is externally mounted with a screw cap structure and installed on the side of the housing 200. A sealing gasket is provided between the screw cap and the housing 200 to ensure sealing performance. The battery can be removed and replaced separately without damaging the overall seal of the housing 200. When replacing the battery, there is no need to stop the machine and disassemble the whole machine. The battery can be replaced simply by unscrewing the screw cap. The operation is convenient and avoids problems such as medium leakage and component damage caused by damaging the sealing structure when replacing the battery.

[0038] Working principle In practical use, the present invention first connects and fixes the receiving part 101 of the pipe 100 to the pressing part 102 to ensure that the labyrinth sealing structure and the sealing ring 104 fit tightly without leakage; the turbine 300 is installed in the annular slot, so that the outer ring rotating section 302 slides with the annular wear-resistant bushing 304, and the central shaft 303 is connected and fixed to the bearing on the guide plate 103; then the magnetoresistive sensor 400 and the annular electromagnet 500 are installed in the receiving part 201 of the housing 200, and sleeved on the outside of the annular convex ring of the pipe 100, and the wires are connected to the low power control module 600; finally, the sealing part 202 and the receiving part 201 are fixed by the locking structure, the positioning pin 204 is inserted, and the overall assembly is completed. After installation, it can be connected to the fluid pipeline for flow measurement.

[0039] When the medium flows through the pipe 100, it first passes through the flow guide structure in front of the turbine 300. The flow guide plate 103 guides the medium to stabilize the flow, so that the medium impacts the inner blade segment 301 of the turbine 300 smoothly and evenly, driving the turbine 300 to rotate around the central axis 303. When the turbine 300 rotates, the marked magnet on it periodically passes by the magnetoresistive sensor 400 with the rotation. After sensing the change in magnetic field, the magnetoresistive sensor 400 outputs a pulse electrical signal. The low-power control module 203 receives the pulse signal, calculates the real-time fluid flow rate according to the correspondence between the pulse frequency and the flow rate, and can upload the flow data to the terminal device through the communication module to realize real-time monitoring and recording of the flow rate.

[0040] When dirt or impurities adhere to the blades of turbine 300 or the inner wall of pipe 100, the low-power control module 203 automatically activates the self-cleaning function, controlling the ring electromagnet 500 to pass a low-frequency pulse current to generate an alternating magnetic field. The alternating magnetic field alternately attracts and repels the vibrating permanent magnet on turbine 300, causing turbine 300 to produce small vibrations and shaking. At the same time, the medium in pipe 100 continues to flow. Under the dual action of vibration and fluid scouring, the dirt and impurities attached to the blades of turbine 300 and the inner wall of pipe 100 are peeled off and discharged with the medium, realizing online self-cleaning without stopping disassembly, ensuring smooth rotation of turbine 300 and ensuring stable metering accuracy.

[0041] During the self-cleaning process, the annular shielding layer inside the outer rotating section 302 effectively isolates the alternating magnetic field generated by the annular electromagnet 500, preventing the magnetic field from interfering with the signal acquisition of the magnetoresistive sensor 400, ensuring that the flow metering work proceeds normally and does not affect the metering accuracy.

[0042] When maintenance of this invention is required, first close the medium valve in the pipeline 100 and drain the remaining medium in the pipeline 100 to ensure maintenance safety; then pull out the positioning pin 204 on the locking structure, turn the control handle 207, loosen the connection between the long U-shaped thin rod 209 and the limit hook 208, and separate the sealing part 202 from the receiving part 201. At this time, the magnetoresistive sensor 400 and the annular electromagnet 500 inside the housing 200 can be directly inspected, calibrated or replaced. After replacement, the sealing part 202 and the receiving part 201 are positioned by the positioning pin 203 and the positioning slot, and then fixed by the locking structure. Insert the positioning pin 204.

[0043] When the turbine 300 needs to be repaired or replaced, after separating the sealing part 202 and the receiving part 201, loosen the fixed connection between the receiving part 101 and the clamping part 102, separate the clamping part 102 from the receiving part 101, and the turbine 300 can be directly pulled out from the annular slot for cleaning, repair, or replacement of damaged inner blade segment 301, outer ring rotating section 302, annular wear-resistant bushing 304, etc. After replacement, put the turbine 300 back into the annular slot, align the receiving part 101 and the clamping part 102 to ensure a proper seal, and then reassemble the housing 200 to complete the repair.

[0044] When the battery power module 601 is depleted and needs to be replaced, there is no need to disassemble the housing 200. Simply unscrew the external cap, remove the old battery, replace it with the new battery, and tighten the cap to ensure that the sealing gasket fits tightly. This completes the battery replacement without damaging the sealing structure of the housing 200 or affecting the normal operation of the entire machine.

[0045] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A low-power intelligent turbine flow meter that is easy to maintain, comprising a pipe (100), a housing (200), a turbine (300), a magnetoresistive sensor (400), and an annular electromagnet (500), characterized in that: The turbine (300) adopts a two-section structure, including an inner blade section (301) and an outer ring rotating section (302). The outer ring rotating section (302) is located between the pipe (100) and the inner blade section (301) as a rotating component of the turbine impeller. The pipe (100) is provided with an annular groove corresponding to the outer ring rotating section (302), and the outer ring of the pipe (100) is provided with an annular convex ring corresponding to the annular groove. The magnetoresistive sensor (400) is disposed inside the housing (200) and sleeved on the pipe (100). A marking magnet is embedded on the turbine (300) corresponding to the magnetoresistive sensor (400). When the turbine (300) rotates, the magnetoresistive sensor (400) senses the position of the marking magnet and outputs an electrical signal to measure the flow rate. The annular electromagnet (500) is disposed inside the housing (200) and sleeved on the pipe (100). The turbine (300) is provided with a number of vibrating permanent magnets corresponding to the annular electromagnet (500). By passing a low-frequency pulse current through the annular electromagnet (500), an alternating magnetic field is generated. The magnetic field alternately attracts and repels the vibrating permanent magnets, causing the turbine (300) to vibrate and shake slightly, which, in conjunction with the flow of the medium, achieves self-cleaning.

2. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 1, characterized in that, The outer ring rotating section (302) is embedded with an annular shielding layer, and the outer ring rotating section (302) makes rotational contact with the pipe (100) to realize the rotation of the turbine (300) in the pipe (100); By setting the outer ring rotating section (302) of magnetic shielding, the annular electromagnet (500) and the magnetoresistive sensor (400) are isolated to avoid mutual interference between the two, so as to ensure that the metering and self-cleaning functions can be performed normally.

3. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 1, characterized in that, The housing (200) is fixedly sleeved on the pipe (100). The housing (200) is divided into a receiving part (201) and a sealing part (202). The receiving part (201) has a side U-shaped cross section, and the sealing part (202) is a disc shape and closes the opening of the receiving part (201). The pipe (100) is divided into a receiving part (101) and a pressing part (102) at the annular slot position. The receiving part (101) is used to receive the outer ring rotating section (302). The pressing part (102) seals against the receiving part (101) and restricts the outer ring rotating section (302) within the annular slot. The receiving part (201) is fixedly sleeved on the receiving part (101), and the sealing part (202) is fixedly sleeved on the pressing part (102). By assembling the two parts of the housing (200) and the two parts of the pipe (100), the overall turbine flow meter can be assembled. During maintenance, it can be disassembled to repair and replace the magnetoresistive sensor (400) and the annular electromagnet (500) inside the housing (200). At the same time, the turbine (300) inside the pipe (100) can be extracted for repair and replacement.

4. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 3, characterized in that, The sealing part (202) and the receiving part (201) are fixed together by a number of locking structures. A number of positioning posts (203) are arranged around the receiving part (201), and a number of positioning slots are provided on the sealing part (202) corresponding to the number of positioning posts (203). The locking structure includes a base (205) fixed on the sealing part (202), a quick-release protrusion (206) rotatably disposed on the base (205), a control handle (207) fixedly disposed on the quick-release protrusion (206), a limit hook (208) fixedly disposed on the receiving part (201), a long U-shaped thin rod (209) corresponding to the limit hook (208) disposed on the quick-release protrusion (206), the long U-shaped thin rod (209) is hung on the limit hook (208) and rotatably connected to the quick-release protrusion (206), and a positioning pin (204) is disposed between the control handle (207) and the base (205). After the long U-shaped thin rod (209) hooks onto the limiting hook (208), it is limited by the quick-release protrusion (206), which quickly achieves the sealing and fixing between the receiving part (201) and the sealing part (202), and has a pressing effect; a positioning pin (204) is set to assist in fixing, ensuring the sealing and fixing stability of the whole device under long-term working conditions.

5. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 3, characterized in that, A labyrinth sealing structure and a sealing ring (104) are provided between the receiving part (101) and the pressing part (102). The receiving part (101) and the pressing part (102) are each provided with a corresponding sealing ring (104) and a receiving groove that is interference fit with it. When the receiving part (101) and the pressing part (102) are pressed together, the labyrinth sealing structure and the sealing ring (104) are used to ensure the contact sealing between the two, thereby avoiding leakage points of the medium due to the structural design of the two parts. At the same time, the rotating structure of the outer ring rotating section (302) placed in the pipe (100) does not affect the sealing of the pipe (100).

6. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 1, characterized in that, The pipe (100) is also provided with two sets of flow guiding structures. The two sets of flow guiding structures are respectively set on the front and rear sides of the turbine (300). Each set of flow guiding structures includes several annularly arranged flow guiding vanes (103). The turbine (300) is provided with a central shaft (303). Both ends of the central shaft (303) extend and are fixedly connected to several flow guiding vanes (103). When the medium flows, several guide vanes (103) are used to guide and conduct the medium being transported, so that the medium flows smoothly and evenly into the turbine (300), reducing the impact of medium disturbance on the rotation of the turbine (300).

7. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 2, characterized in that, The inner wall of the annular slot is provided with two annular wear-resistant bushings (304) corresponding to the outer ring rotating section (302). The outer ring rotating section (302) and the annular wear-resistant bushings (304) are in sliding fit. The annular wear-resistant bushings (304) are detachably embedded in the side wall of the outer ring rotating section (302) and can be disassembled and replaced as the turbine (300) is disassembled and assembled. The inner wall of the annular wear-resistant bushing (304) is provided with a lubrication groove for storing lubricating medium, reducing frictional loss between the outer ring rotating section (302) and the annular wear-resistant bushing (304), and extending the service life of the turbine (300).

8. The easy-to-maintain, low-power intelligent turbine flow meter as described in claim 1, characterized in that, The housing (200) is also provided with a low power control module (600), which is electrically connected to the magnetoresistive sensor (400) and the ring electromagnet (500). The low power control module (600) is provided with a battery power supply module (601), which is external and adopts a screw cap structure, and can be replaced separately without damaging the seal of the housing (200).

Images