A channel type flowmeter based on double detection technology

Abstract

The present application relates to flow meter technical field, especially a kind of channel type flow meter based on double detection technology, its technical scheme includes: communication mechanism, installation mechanism and cleaning transmission mechanism are installed on the communication mechanism, compensation mechanism and flow metering mechanism are installed on the installation mechanism, the communication mechanism is used to form fluid passage and preliminary barrier impurities;The cleaning transmission mechanism is operated by fluid power, and is used to clean the barrier component of communication mechanism;The compensation mechanism is used to supplement power for cleaning transmission mechanism when fluid flow rate is low, and promote the internal ventilation of installation mechanism;The installation mechanism is used to install fluid parameter detection sensor;The flow metering mechanism is used to measure flow, and compensation mechanism is controlled according to flow work.The present application solves the problem that protective screen is easily blocked, low flow rate cleaning is insufficient and sensor is affected by moisture.

Description

Technical Field

[0001] This invention relates to the field of flow meter technology, specifically to a channel flow meter based on dual detection technology. Background Technology

[0002] In industrial production and fluid transportation, flow meters, as indispensable key metering devices, are widely used in many industries such as petroleum, chemical, and water treatment. Their metering accuracy and stability are directly related to the improvement of production efficiency and the precision of process control. To prevent impurities in the fluid from directly impacting the monitoring ends of pressure, temperature, and other sensors, existing channel flow meters generally have protective meshes installed at the sensor detection ports to block large particles of impurities while ensuring that the fluid can smoothly contact the sensors to transmit pressure and temperature signals. This design has become a standard configuration in the industry.

[0003] However, in practical applications, channel flow meters still face several technical challenges that urgently need to be addressed. On one hand, after prolonged use, the mesh of the protective mesh is easily clogged by fine particles, fibers, and other impurities carried by the fluid. On the other hand, when the fluid flow rate is low, the fluid's own scouring force is insufficient to remove the accumulated impurities on the protective mesh; in fact, insufficient flow rate can accelerate impurity deposition. Furthermore, the sensor mounting cavity is prone to prolonged dampness due to moisture penetration from the fluid or environmental humidity, which not only leads to continuous degradation of sensor performance but can also damage the sensor circuitry in severe cases.

[0004] To address these technical issues, a channel flow meter based on dual detection technology is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a channel flow meter based on dual detection technology, which has the advantages of reducing the accumulation of impurities on the protective mesh, enhancing the cleaning effect at low flow rates, and improving the humid environment of the sensor cavity. It effectively solves the problems of easy clogging of the protective mesh, insufficient cleaning at low flow rates, and sensor being affected by moisture.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a channel flow meter based on dual detection technology, comprising a connecting mechanism, on which an installation mechanism and a cleaning transmission mechanism are mounted; on which a compensation mechanism and a flow metering mechanism are mounted; the connecting mechanism is used to form a fluid channel and initially block impurities; the cleaning transmission mechanism operates with fluid power and is used to clean the impurity-blocking components of the connecting mechanism; the compensation mechanism is used to supplement the power of the cleaning transmission mechanism when the fluid flow rate is low, and to promote internal ventilation of the installation mechanism; the installation mechanism is used to install fluid parameter detection sensors and provide a dry environment; the flow metering mechanism is used to measure the flow rate and controls the operation of the compensation mechanism according to the flow rate.

[0007] Preferably, the connecting mechanism includes a lower pipe section and an upper pipe section, both of which are equipped with clamping frames. A first sealing bearing is installed on the opposite side of the lower and upper pipe sections via the clamping frames, and the opposite side of the lower and upper pipe sections is sealed by a sealing strip.

[0008] When the above technical solution is adopted, the lower pipe section and the upper pipe section are equipped with the first sealing bearing through the clamping frame, and the lower pipe section and the upper pipe section are sealed with the sealing strip, which realizes the stable connection between the lower pipe section and the upper pipe section and the connection with the rotating parts, and has the advantages of ensuring the sealing of the fluid channel and the structural stability.

[0009] Preferably, the inner side of the upper pipe section is provided with an installation groove for installing a debris blocking component, which is a protective mesh sheet. The protective mesh sheet is used to block impurities in the fluid. The top center of the installation groove has an opening and a second sealing bearing is embedded therein. The upper pipe sections on both sides of the second sealing bearing are respectively provided with a first installation hole and a second installation hole.

[0010] When the above technical solution is adopted, the mounting groove on the inner side of the upper pipe section is used to install the protective mesh. The top of the mesh is fitted with a second sealing bearing and has a first mounting hole and a second mounting hole. This achieves the blocking of impurities, the rotation support of the longitudinal shaft, and the installation and positioning of the fluid parameter detection sensor. It has the advantages of clear functional zoning and meeting the assembly requirements of multiple components.

[0011] Preferably, the cleaning transmission mechanism includes a guide fluid and a longitudinal rotating shaft. A first journal is installed at one end of the guide fluid, and a spiral groove is formed on the guide fluid at the installation location of the first journal. The guide fluid can rotate under the impact of the fluid through the spiral groove. A second journal is installed at the other end of the guide fluid through a transverse rotating shaft. The first journal and the second journal are respectively connected to a first sealed bearing. A first bevel gear is installed on the transverse rotating shaft.

[0012] When the above technical solution is adopted, the guide fluid is rotatably installed in the communication mechanism through the first sealed bearing, and a spiral groove is opened at one end of the guide fluid. At the same time, the first bevel gear is installed on the transverse rotating shaft, realizing the conversion of fluid power into rotational power and the establishment of the power transmission foundation. It has the advantage of providing a power source for cleaning action by means of fluid self-drive.

[0013] Preferably, a second bevel gear is installed at the bottom end of the longitudinal rotating shaft, the second bevel gear meshes with the first bevel gear, the top of the longitudinal rotating shaft is rotatably installed with the upper pipe section through a second sealed bearing, the top of the longitudinal rotating shaft passes through the second sealed bearing and is rotatably connected with the mounting mechanism, and a scraper is installed on the longitudinal rotating shaft, the scraper adheres to and cleans the protective mesh as the longitudinal rotating shaft rotates.

[0014] When the above technical solution is adopted, the longitudinal rotating shaft meshes with the first bevel gear of the transverse rotating shaft through the second bevel gear, and its top passes through the second sealed bearing and is rotatably connected to the installation mechanism. At the same time, a scraper is installed on it, realizing the power steering transmission and efficient cleaning of the protective mesh. It has the advantages of stable transmission and ensuring that the mesh on the protective mesh remains unobstructed.

[0015] Preferably, the mounting mechanism includes a housing with a sealing sleeve. The housing is used to mount a fluid parameter detection sensor, which is a temperature sensor body and a pressure sensor body. The detection ends at the bottom of the temperature sensor body and the pressure sensor body pass through the first mounting hole and the second mounting hole, respectively, and extend into the protective mesh on the side opposite to the mounting groove.

[0016] When the above technical solution is adopted, a sealing sleeve is provided on the housing, and the temperature sensor body and pressure sensor body are installed. The detection ends of the temperature sensor body and pressure sensor body pass through the corresponding mounting holes and extend into the designated position, which realizes the stable installation of the fluid parameter detection sensor and effective contact with the fluid. It has the advantages of ensuring the detection accuracy and installation sealing of the fluid parameter detection sensor.

[0017] Preferably, the housing is provided with a first chamber, a second chamber and a third chamber. The second chamber has a first air hole on each side. The second chamber is connected to the first chamber and the third chamber through the first air hole. The second chamber has an opening on one side of its back and is connected to the compensation mechanism. The second chamber is provided with a wind turbine, which is mounted on a longitudinal shaft.

[0018] When the above technical solution is adopted, the shell is divided into three chambers. The second chamber is connected to the other chambers through the first air hole. At the same time, the back of the second chamber is connected to the compensation mechanism and the wind turbine is installed inside the second chamber by means of the longitudinal rotating shaft. This realizes the circulation of air inside the shell and the driving of the wind turbine, which has the advantages of providing an airflow basis for moisture prevention and promoting the regulation of the internal environment.

[0019] Preferably, the first chamber is used for mounting the pressure sensor body, the third chamber is used for mounting the temperature sensor body, both the first chamber and the third chamber are filled with desiccant, the first chamber and the third chamber are respectively provided with a feeding end, and a cover is installed at the feeding end. A second vent is opened on the cover, and the second vent is used for venting the inside of the housing.

[0020] When the above technical solution is adopted, the first chamber and the third chamber are respectively equipped with the corresponding pressure sensor body and temperature sensor body, which are filled with desiccant. The feeding end is equipped with a cover with a second air hole, which realizes the independent installation of the sensing components and the maintenance of the dry environment of the chamber. It has the advantages of targeted moisture protection and convenient desiccant replacement and exhaust.

[0021] Preferably, the compensation mechanism includes a centrifugal fan, the outlet of which is connected to an air duct, and the other end of the air duct is connected to the housing. The airflow introduced into the installation mechanism through the air duct provides power to the wind turbine impeller, and at the same time, the airflow introduced into the air duct can promote ventilation inside the housing.

[0022] When the above technical solution is adopted, the centrifugal fan is fixedly connected to the support frame, and the centrifugal fan is connected to the shell through the air duct. This achieves the effect of providing power to the wind turbine impeller and promoting ventilation inside the shell at low flow rates, and has the advantages of compensating for insufficient fluid power and enhancing the moisture-proof effect.

[0023] Preferably, the flow metering mechanism includes a display, which is provided with a signal source line for connecting the temperature sensor body and the pressure sensor body. A support frame is fixedly installed at the rear end of the display, and the support frame is provided with a cable outlet plug for connecting an external cable.

[0024] When the above technical solution is adopted, the display is connected to the fluid parameter detection sensor through the signal source line. The rear end of the display is fixed with a support frame, and the support frame is equipped with a cable outlet plug. This realizes the display of parameters such as flow rate, the transmission of sensor data, and cable management. It has the advantages of intuitive measurement, stable installation, and neat cable management.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] This invention incorporates a connecting mechanism, a cleaning transmission mechanism, a compensation mechanism, an installation mechanism, and a flow metering mechanism. The connecting mechanism forms a fluid channel and initially blocks impurities through impurity-blocking components. The cleaning transmission mechanism operates with the aid of fluid power to clean the impurity-blocking components of the connecting mechanism, thereby reducing the accumulation of impurities on the protective mesh and achieving the effect of preventing the protective mesh from easily clogging.

[0027] The compensation mechanism provides additional power to the cleaning transmission mechanism when the fluid flow rate is low, enhancing the cleaning effect at low flow rates and solving the problem of insufficient cleaning at low flow rates. At the same time, the compensation mechanism promotes internal ventilation of the mounting mechanism, which provides a dry environment for the fluid parameter detection sensor, improving the humid environment of the sensor cavity and preventing the sensor from being affected by moisture. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the installation structure of the communication mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the cross-sectional installation structure of the communication mechanism of the present invention;

[0031] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0032] Figure 5 This is a front view of the mounting structure of the cleaning transmission mechanism of the present invention;

[0033] Figure 6 This is a schematic diagram of the installation structure of the compensation mechanism of the present invention from one perspective;

[0034] Figure 7 This is a schematic diagram of the installation structure of the compensation mechanism of the present invention from another perspective;

[0035] Figure 8 This is a cross-sectional view of the mounting structure of the mounting mechanism of the present invention.

[0036] Figure 9 This is a cross-sectional view of the mounting structure of the mounting mechanism of the present invention from another perspective;

[0037] Figure 10 This is a schematic diagram of the installation structure of the flow metering mechanism of the present invention.

[0038] In the diagram: 1. Connecting mechanism; 11. Lower pipe section; 12. Upper pipe section; 121. Mounting groove; 122. First mounting hole; 123. Second mounting hole; 13. Clamping frame; 14. First sealed bearing; 15. Sealing strip; 16. Protective mesh; 17. Second sealed bearing; 2. Mounting mechanism; 21. Housing; 211. First chamber; 212. Second chamber; 2121. First vent; 213. Third chamber; 22. Sealing sleeve; 23. Temperature sensor body; 24. Pressure sensor 25. Main body; 25. Cover; 251. Second air vent; 26. Wind turbine impeller; 3. Compensation mechanism; 31. Centrifugal fan; 32. Air duct; 4. Flow metering mechanism; 41. Display; 411. Source cable; 42. Support frame; 421. Outlet plug; 5. Cleaning transmission mechanism; 51. First journal; 52. Fluid guide; 521. Spiral groove; 53. Transverse rotating shaft; 531. First bevel gear; 54. Second journal; 55. Longitudinal rotating shaft; 551. Second bevel gear; 56. Scraper. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: In order to clean the protective mesh and solve the problem of clogging caused by the accumulation of impurities, such as... Figures 1 to 5As shown, one embodiment of the present invention is provided: a channel flow meter based on dual detection technology. The connecting mechanism 1 includes a lower pipe section 11 and an upper pipe section 12, which are fixedly connected by bolts. The opposite sides of the two are sealed by a sealing strip 15. A clamping frame 13 is fixed on the lower pipe section 11 and the upper pipe section 12 respectively. A first sealing bearing 14 is clamped and fixed by the clamping frame 13. An installation groove 121 is provided on the inner side of the upper pipe section 12. A protective mesh 16 is installed in the installation groove 121. The protective mesh 16 is an arc-shaped stainless steel mesh, and its arc is the same as the arc of the inner wall of the upper pipe section 12. It is used to block impurities in the fluid. A second sealing bearing 17 is embedded in a hole opened in the middle of the top of the installation groove 121.

[0041] One end of the guide fluid 52 of the cleaning transmission mechanism 5 is fixedly connected to the first journal 51, and the other end is connected to the second journal 54 through the transverse rotating shaft 53. The first journal 51 and the second journal 54 are respectively rotatably engaged with the two first sealed bearings 14 of the connecting mechanism 1. The first bevel gear 531 is fixedly installed on the transverse rotating shaft 53. A spiral groove 521 is opened on the surface of the guide fluid 52.

[0042] The second bevel gear 551 is fixedly installed at the bottom of the longitudinal rotating shaft 55. The second bevel gear 551 meshes with the first bevel gear 531. The top of the longitudinal rotating shaft 55 passes through the second sealed bearing 17 and is rotatably connected to the mounting mechanism 2. The scraper 56 is fixedly installed on the longitudinal rotating shaft 55. The scraper 56 is made of flexible material and is strip-shaped. The side that contacts the protective mesh 16 is provided with bristles. During rotation, it can adaptively bend and deform with the arc surface of the protective mesh 16, and always maintain full contact with the surface of the arc-shaped protective mesh 16. The wind turbine 26 is sleeved on the part of the longitudinal rotating shaft 55 located inside the mounting mechanism 2.

[0043] When the fluid flows through the connecting mechanism 1, the fluid impacts the guide fluid 52, which rotates through the spiral groove 521. The guide fluid 52 drives the transverse rotating shaft 53 to rotate. The transverse rotating shaft 53 drives the longitudinal rotating shaft 55 to rotate through the meshing of the first bevel gear 531 and the second bevel gear 551. When the longitudinal rotating shaft 55 rotates, the flexible strip scraper 56 rotates synchronously. Through its own bending deformation, the bristles make close contact with the arc-shaped surface of the protective mesh 16 and scrape it, thoroughly removing the impurities accumulated on its surface. Since the particle size of the impurities is larger than the mesh aperture, they will not enter the inner side of the protective mesh 16, thus avoiding mesh blockage and ensuring that the temperature sensor body 23 and pressure sensor body 24 in the installation mechanism 2 can accurately sense the fluid pressure and temperature.

[0044] Example 2: To achieve cleaning power compensation at low flow rates and solve the problem of insufficient self-flushing force of the fluid at low flow rates, thus failing to effectively clean the protective mesh, such as... Figure 1 , Figure 6 , Figure 7 and Figure 10 As shown, in this embodiment, the compensation mechanism 3 includes a centrifugal fan 31, one end of the air duct 32 is connected to the air outlet of the centrifugal fan 31, and the other end is connected to the second chamber 212 of the installation mechanism 2. All the output air force of the centrifugal fan 31 enters the second chamber 212 through the air duct 32.

[0045] The display 41 of the flow metering mechanism 4 is connected to the temperature sensor body 23 and pressure sensor body 24 of the mounting mechanism 2 via the signal source line 411. The support frame 42 is fixedly installed at the rear end of the display 41. The support frame 42 and the housing 21 are detachably connected by bolts. The sealing sleeve 22 is fitted at the connection between the support frame 42 and the housing 21. The outlet screw plug 421 is set on the support frame 42. The display 41 and the centrifugal fan 31 of the compensation mechanism 3 are electrically connected via an external cable passing through the outlet screw plug 421.

[0046] When the flow metering mechanism 4 receives signals from the temperature sensor body 23 and the pressure sensor body 24 through the signal source line 411 and identifies that the current flow rate is low, it indicates that the power generated by the fluid impact of the guide fluid 52 of the cleaning transmission mechanism 5 is insufficient, resulting in a decrease in the rotation speed of the longitudinal rotating shaft 55 and the flexible strip scraper 56. At this time, the flow metering mechanism 4 controls the centrifugal fan 31 to start. All the airflow generated by the centrifugal fan 31 is introduced into the second chamber 212 of the installation mechanism 2 through the air duct 32, impacting the wind turbine 26 and driving the longitudinal rotating shaft 55 to rotate. Then, through the meshing transmission of the first bevel gear 531 and the second bevel gear 551, the guide fluid 52 is pushed to rotate through the transverse rotating shaft 53, supplementing the power of the cleaning transmission mechanism 5, so that the flexible strip scraper 56 maintains a certain rotation speed. Through its own bending deformation, the bristles continuously and tightly scrape along the surface of the arc-shaped protective mesh 16, preventing impurities from being deposited more quickly due to the low flow rate, maintaining the clean state of the protective mesh 16 and the accurate detection of the temperature sensor body 23 and the pressure sensor body 24.

[0047] Example 3: To achieve moisture protection for the sensor mounting cavity and solve the problem of sensor performance degradation or damage due to humid environments, such as... Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, the housing 21 of the mounting mechanism 2 is provided with a sealing sleeve 22. The housing 21 is divided into a first chamber 211, a second chamber 212 and a third chamber 213. The pressure sensor body 24 is installed in the first chamber 211 and the temperature sensor body 23 is installed in the third chamber 213. The detection ends at the bottom of the temperature sensor body 23 and the pressure sensor body 24 pass through the first mounting hole 122 and the second mounting hole 123 of the upper pipe section 12 and extend into the protective mesh 16 on the side opposite to the mounting groove 121.

[0048] The first air vent 2121 is opened on both sides of the second chamber 212. The second chamber 212 is connected to the first chamber 211 and the third chamber 213 through the first air vent 2121. The hole opened on the back of the second chamber 212 is connected to the air duct 32 of the compensation mechanism 3. The wind turbine 26 is sleeved on the longitudinal rotating shaft 55 of the cleaning transmission mechanism 5 and located in the second chamber 212. The desiccant is filled in the first chamber 211 and the third chamber 213. The cover 25 is installed at the feeding end of the first chamber 211 and the third chamber 213. The second air vent 251 is opened on the cover 25.

[0049] When the fluid velocity is high enough, the longitudinal shaft 55 of the cleaning transmission mechanism 5 rotates at high speed under the hydrodynamic drive, driving the wind turbine 26 mounted on it to rotate synchronously, thereby drawing in dry external air through the air duct 32, thereby accelerating the air flow in the second chamber 212, and promoting the air flow with the first chamber 211 and the third chamber 213 through the first air hole 2121.

[0050] When the flow metering mechanism 4 receives signals from the temperature sensor body 23 and the pressure sensor body 24 via the signal source line 411 and detects that the current flow rate is low, the flow metering mechanism 4 controls the centrifugal fan 31 to start. All the airflow generated is introduced into the second chamber 212 through the air duct 32, directly impacting the fan impeller 26 from the side to make it rotate, thereby maintaining airflow efficiency. At the same time, the desiccant in the first chamber 211 and the third chamber 213 adsorbs the water vapor released from the fluid, and the air discharged from the first vent 2121 carries away the water vapor. The second vent 251 of the cover 25 cooperates to exhaust the air, together keeping the chamber dry, protecting the temperature sensor body 23 and the pressure sensor body 24 and preventing damage due to moisture.

[0051] When using this invention, the first step is to prepare for installation by checking the status of all necessary components, ensuring that the protective mesh 16 is undamaged, the bristles of the scraper 56 are intact and the desiccant is sufficient, and at the same time, prepare accessories and tools such as bolts and sealing sleeves 22.

[0052] The first journal 51 and the second journal 54 of the cleaning transmission mechanism 5 are fitted with the first sealed bearing 14 to ensure that the guide fluid 52 and the transverse rotating shaft 53 are stably positioned; then the second sealed bearing 17 is installed, and the protective mesh 16 is inserted into the mounting groove 121 of the upper pipe section 12 to ensure that the arc fits the inner wall.

[0053] Next, install the cleaning transmission mechanism 5 so that the second bevel gear 551 at the bottom of the longitudinal rotating shaft 55 meshes with the first bevel gear 531 of the transverse rotating shaft 53. The top passes through the second sealing bearing 17 and is rotatably connected to the installation mechanism 2. At the same time, fix the scraper 56 to ensure that it fits against the protective mesh 16. Finally, align the lower pipe section 11 with the upper pipe section 12, fix them with bolts and ensure that the sealing strip 15 is well sealed, and fix the first sealing bearing 14 through the clamping bracket 13.

[0054] The installation mechanism 2 requires fixing the housing 21 to the upper pipe section 12, allowing the detection ends of the temperature sensor body 23 and the pressure sensor body 24 to pass through the first mounting hole 122 and the second mounting hole 123 respectively; after filling the first chamber 211 and the third chamber 213 with desiccant, the cover 25 with the second vent 251 is tightly closed.

[0055] The installation of the compensation mechanism 3 involves connecting one end of the air duct 32 to the centrifugal fan 31 and the other end to the second chamber 212 of the housing 21, ensuring a tight connection.

[0056] The installation of the flow metering mechanism 4 requires connecting the display 41 to the housing 21 via the support frame 42, and fitting the sealing sleeve 22 onto the connection point; connecting the display 41 to the temperature sensor body 23 and the pressure sensor body 24 with the signal source line 411, and connecting the display 41 to the centrifugal fan 31 through the outlet screw plug 421 with the external cable.

[0057] During debugging and inspection, manually rotate the guide fluid 52 to confirm that the rotation is smooth and the scraper 56 makes good contact; turn on the power and check whether the circuit connection and signal transmission of each component are normal through the display 41.

[0058] During the startup and operation phase, the fluid delivery system is activated, and the fluid impacts the guide fluid 52, driving the cleaning transmission mechanism 5 to operate. The scraper 56 cleans the protective mesh 16. The flow metering mechanism 4 measures and displays the flow rate in real time. When the flow rate is low, the centrifugal fan 31 is automatically started to supplement the power, while promoting ventilation and moisture prevention of the installation mechanism 2.

[0059] During operation, it is necessary to monitor whether the data on display 41 is stable, and regularly check the cleanliness of the protective mesh 16, the wear of the scraper 56, and the status of the desiccant.

[0060] After shutdown, turn off the fluid system and perform maintenance after the device has come to a complete stop: replace the failed desiccant, clean the residual impurities on the protective mesh 16, and replace the severely worn scraper 56.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A channel flow meter based on dual detection technology, comprising a connecting mechanism (1), wherein an installation mechanism (2) and a cleaning transmission mechanism (5) are mounted on the connecting mechanism (1), and a compensation mechanism (3) and a flow metering mechanism (4) are mounted on the installation mechanism (2), characterized in that: The connecting mechanism (1) is used to form a fluid channel and initially block impurities. The connecting mechanism (1) includes an upper pipe section (12). An installation groove (121) is provided on the inner side of the upper pipe section (12). A protective mesh (16) for blocking impurities in the fluid is installed in the installation groove (121). A first installation hole (122) and a second installation hole (123) are provided on the upper pipe section (12). The cleaning transmission mechanism (5) operates by means of fluid power and is used to clean the obstruction components of the communication mechanism (1). The compensation mechanism (3) is used to supplement the power of the cleaning transmission mechanism (5) when the fluid flow rate is low, and to promote the internal ventilation of the installation mechanism (2); the installation mechanism (2) is used to install the fluid parameter detection sensor; the flow metering mechanism (4) is used to measure the flow rate and control the operation of the compensation mechanism (3) according to the flow rate. The mounting mechanism (2) includes a housing (21), on which a sealing sleeve (22) is provided. The housing (21) is used to install a fluid parameter detection sensor, which is a temperature sensor body (23) and a pressure sensor body (24). The detection ends at the bottom of the temperature sensor body (23) and the pressure sensor body (24) pass through the first mounting hole (122) and the second mounting hole (123) respectively and extend into the protective mesh (16) on the side opposite to the mounting groove (121). The housing (21) is provided with a first chamber (211), a second chamber (212) and a third chamber (213). The second chamber (212) has a first air hole (2121) on each side. The second chamber (212) is connected to the first chamber (211) and the third chamber (213) through the first air hole (2121). The second chamber (212) has an opening on one side of its back and is connected to the compensation mechanism (3). The second chamber (212) is provided with a wind turbine (26), which is mounted on a longitudinal rotating shaft (55). The first chamber (211) is used for the installation of the pressure sensor body (24), and the third chamber (213) is used for the installation of the temperature sensor body (23). Both the first chamber (211) and the third chamber (213) are filled with desiccant. The first chamber (211) and the third chamber (213) are respectively provided with a feeding end, and a cover (25) is installed at the feeding end. The cover (25) is provided with a second vent (251), which is used for venting inside the housing (21).

2. The channel flow meter based on dual detection technology according to claim 1, characterized in that, The connecting mechanism (1) further includes a lower pipe section (11), and a clamping frame (13) is installed on both the lower pipe section (11) and the upper pipe section (12). A first sealing bearing (14) is installed on the opposite side of the lower pipe section (11) and the upper pipe section (12) through the clamping frame (13). The opposite side of the lower pipe section (11) and the upper pipe section (12) is sealed by a sealing strip (15).

3. A channel flow meter based on dual detection technology according to claim 2, characterized in that, The mounting groove (121) has a hole in the middle of the top and a second sealed bearing (17) is embedded therein.

4. A channel flow meter based on dual detection technology according to claim 2, characterized in that, The cleaning transmission mechanism (5) includes a guide fluid (52) and a longitudinal rotating shaft (55). A first journal (51) is installed at one end of the guide fluid (52). A spiral groove (521) is opened on the guide fluid (52) at the installation location of the first journal (51). The guide fluid (52) can rotate under the impact of the fluid through the spiral groove (521). A second journal (54) is installed at the other end of the guide fluid (52) through a transverse rotating shaft (53). The first journal (51) and the second journal (54) are respectively connected to the first sealed bearing (14). A first bevel gear (531) is installed on the transverse rotating shaft (53).

5. A channel flow meter based on dual detection technology according to claim 4, characterized in that, The bottom end of the longitudinal rotating shaft (55) is equipped with a second bevel gear (551), which meshes with the first bevel gear (531). The top of the longitudinal rotating shaft (55) is rotatably installed with the upper pipe section (12) through the second sealed bearing (17). The top of the longitudinal rotating shaft (55) passes through the second sealed bearing (17) and is rotatably connected with the installation mechanism (2). A scraper (56) is installed on the longitudinal rotating shaft (55). The scraper (56) rotates with the longitudinal rotating shaft (55) and adheres to and cleans the protective mesh (16).

6. A channel flow meter based on dual detection technology according to claim 1, characterized in that, The compensation mechanism (3) includes a centrifugal fan (31), the outlet end of the centrifugal fan (31) is connected to a duct (32), the other end of the duct (32) is connected to the housing (21), the airflow introduced into the installation mechanism (2) through the duct (32) provides power to the wind turbine (26), and at the same time the airflow introduced into the duct (32) can promote ventilation inside the housing (21).

7. A channel flow meter based on dual detection technology according to claim 1, characterized in that, The flow metering mechanism (4) includes a display (41), a signal source line (411) on the display (41), the signal source line (411) is used to connect the temperature sensor body (23) and the pressure sensor body (24), a support frame (42) is fixedly installed at the rear end of the display (41), and a cable outlet plug (421) is provided on the support frame (42), the cable outlet plug (421) is used to connect external cables.

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