Metering channel structure and assembly equipment for NB remote ultrasonic gas meter

Abstract

The present application relates to the field of gas measurement, and in particular to a metering flow channel structure and assembly equipment used in NB remote ultrasonic gas meters, including a flow channel body, one end of the flow channel body is provided with an air inlet, and the other end is provided with an air outlet pipe, the flow channel body is provided with an inner cavity for air flow to pass through, the inner cavity connects the air inlet with the air outlet pipe, a transducer flow channel is provided on the side wall of the flow channel body, the transducer flow channel is connected to the inner cavity of the flow channel body, the cross-section of the inner cavity is elliptical, a rectifying mechanism is provided in the inner cavity, the rectifying mechanism is used to adjust the airflow, the present application improves the poor measurement accuracy caused by unstable airflow in traditional methods, can maintain airflow stability, and achieve the effect of improving measurement accuracy.

Description

Technical Field

[0001] The present application relates to the field of gas measurement, and in particular to a metering flow channel structure and assembly equipment used in a NB remote ultrasonic gas meter. Background Art

[0002] NB remote ultrasonic gas meter is a smart gas meter that combines traditional diaphragm gas meter and NB-IOT (narrowband Internet of Things) technology.

[0003] Among them, the ultrasonic sensor is the main component of the ultrasonic gas meter, and its function is to transmit and receive ultrasonic signals. When the gas passes through the pipeline, the ultrasonic signal emitted by the ultrasonic sensor is reflected back by the gas molecules. After the receiver receives the reflected signal, it can calculate the flow rate and flow of the gas by processing the signal.

[0004] The signal processor of the ultrasonic gas meter is an important component for processing the received ultrasonic signal. Its function is to process the ultrasonic signal, convert it into the flow rate and flow of the gas, and then transmit the metering data to the display or data processing system for processing and recording. Ultrasonic gas meters are widely used due to their non-contact working characteristics. Usually, a flow channel cavity with a rectangular or square cross-section is used to accommodate the sensor. This structure is simple and easy to make, but it is easy to cause unstable airflow, which in turn affects the measurement accuracy. Summary of the invention

[0005] In order to maintain the stability of the airflow and thus improve the measurement accuracy, the present application provides a metering flow channel structure and assembly equipment for use in a NB remote ultrasonic gas meter.

[0006] In the first aspect, the present application provides a metering flow channel structure for a NB remote ultrasonic gas meter, which adopts the following technical solution:

[0007] A metering flow channel structure used in a NB remote ultrasonic gas meter includes a flow channel body, one end of the flow channel body is provided with an air inlet, and the other end is provided with an air outlet pipe, the flow channel body is provided with an inner cavity for air flow to pass through, the inner cavity connects the air inlet with the air outlet pipe, a transducer flow channel is provided on the side wall of the flow channel body, the transducer flow channel is connected with the inner cavity of the flow channel body, the cross-section of the inner cavity is elliptical, and a rectifying mechanism is provided in the inner cavity, and the rectifying mechanism is used to adjust the airflow.

[0008] By adopting the above technical solution, the gas is transported from the air inlet to the inner cavity of the flow channel body, so that the gas flow passes through the rectifying mechanism, and the rectifying mechanism cooperates with the elliptical inner cavity cross section to keep the flowing gas flow stable, and the gas flow adjusted by the rectifying mechanism is discharged from the gas outlet pipe. When the gas flow passes through the rectifying mechanism, the external ultrasonic source generates ultrasonic waves into the inner cavity through the energy conversion flow channel, so that the ultrasonic waves carry out the data of the gas flow in the inner cavity after reflection, so as to measure the gas, thereby achieving the improvement of the accuracy of the gas data measurement while maintaining the stability of the gas flow.

[0009] In a specific possible implementation scheme, the rectification mechanism includes rectification pieces, and the rectification pieces include main rectification baffles and rectification steel sheets. The main rectification baffles and rectification steel sheets are both arranged in the inner cavity of the flow channel body, and rectification steel sheets are arranged on both sides of the main rectification baffles.

[0010] By adopting the above technical solution, by arranging a rectifying piece in the inner cavity, the airflow is adjusted by the rectifying piece when it flows through the rectifying piece, so that the airflow after passing through the rectifying piece remains stable, so as to facilitate the measurement of the airflow.

[0011] In a specific possible implementation manner, the cross-sections of the inner top wall and the inner bottom wall in the inner cavity at the area formed between the main flow baffle and the rectifier steel sheet are arc-shaped.

[0012] By adopting the above technical solution, the cross-sections of the inner top wall and the inner bottom wall in the area formed between the main airflow baffle and the rectifier steel sheet in the inner cavity are set to an arc shape, thereby facilitating the passage of airflow, reducing the resistance of airflow, and facilitating the external ultrasonic source to measure the gas.

[0013] In a specific possible implementation manner, a transducer and a transducer gland are provided on the transducer flow channel, and the transducer gland is used to position the transducer on the transducer flow channel.

[0014] By adopting the above technical solution, by arranging a transducer and a transducer gland on the transducer flow channel, it is convenient for the ultrasonic source to transmit ultrasonic waves into the flow channel body through the transducer, thereby realizing the measurement of the gas flow flowing through the flow channel body.

[0015] In the second aspect, the present application provides an assembly device for a metering flow channel structure in a NB remote ultrasonic gas meter, including an assembly frame, on which an assembly station is provided, and an assembly device is installed at the assembly station on the assembly frame, and the assembly device includes a conveying mechanism, a limiting mechanism and a loading mechanism, the conveying mechanism is used to convey the flow channel body, the transducer and the transducer cover, the limiting mechanism is used to limit the flow channel body, and the loading mechanism is used to install the transducer and the transducer cover onto the flow channel body.

[0016] By adopting the above technical solution, the flow channel body, the transducer and the transducer cover are transported by the conveying mechanism, and when the flow channel body is transported to the assembly station, the flow channel body is limited by the limiting mechanism, and the transducer and the transducer cover are installed on the flow channel body by the loading mechanism, thereby completing the assembly of the flow channel structure.

[0017] In a specific possible implementation scheme, the conveying mechanism includes a conveying platform, a transmission component and a loading component. The conveying platform is installed on an assembly frame, the transmission component is installed on the conveying platform, the conveying component is used to convey the flow channel body, the loading component is installed on the assembly platform, and the loading component is connected to the conveying component, and the loading component is used to convey the transducer and the transducer gland.

[0018] By adopting the above technical solution, the flow channel body is transported by the conveying assembly, and the transducer and the transducer gland are transported to the flow channel body at the assembly station by the loading assembly, thereby facilitating the loading mechanism to install the transducer and the transducer gland on the flow channel body.

[0019] In a specific feasible implementation scheme, the limiting mechanism includes a clamping assembly, a lifting assembly and a blocking assembly, the clamping assembly includes a first clamping plate, a second clamping plate, a clamping spring, a support plate and a top plate, the top plate is installed on the conveying platform, and a gap for the flow channel body to pass through is left between the lower end of the top plate and the conveying assembly, and a pushing inclined surface is provided at the lower end of the top plate, the lifting assembly is installed on the conveying platform, the support plate is installed on the lifting assembly, the first clamping plate is installed on the support plate, a mounting plate is also installed on the conveying platform, the mounting plate is located above the support plate, and the support plate and the mounting plate are connected by a connecting piece, a return spring is also installed on the conveying platform, the return spring is connected to the mounting plate, the second clamping plate is slidably installed on the mounting plate, and a space for storing the flow channel body is left between the first clamping plate and the second clamping plate, and the second clamping plate is located close to the top plate, and the upper end of the second clamping plate is used to resist the pushing inclined surface, the clamping spring is installed on the mounting plate, and the clamping spring is also connected to the second clamping plate, the blocking assembly is installed on the conveying platform, and the blocking assembly is used to be connected to the first clamping plate.

[0020] By adopting the above technical solution, when the flow channel body is transported to the assembly station, the flow channel body is limited by the second clamping plate, and then the support plate is lifted by the lifting assembly, so that the support plate is connected to the mounting plate through the connecting piece, so that the flow channel body falls between the first clamping plate and the second clamping plate, and then the support plate and the mounting plate are continued to be driven up by the lifting assembly, so that the upper end of the second clamping plate contacts the push inclined surface, so that the second clamping plate moves toward the direction of the first clamping plate, so that the first clamping plate and the second clamping plate clamp the flow channel body, thereby facilitating subsequent assembly work.

[0021] In a specific feasible implementation scheme, the connecting member includes a connecting block, a locking block and a locking spring, a connecting hole is provided on the mounting plate, the locking block is slidably installed in the connecting hole, the locking spring is also installed in the connecting hole, and one end of the locking spring is also connected to the locking block, a mounting hole is provided on the support plate, the connecting block is installed in the mounting hole, and one end of the connecting block extends upward, and a locking inclined surface for the upper end of the connecting block to abut against is provided on the bottom wall of the end of the locking block, and a locking groove for the locking block to be inserted into is provided on the upper end of the connecting block, and an unlocking member is also installed on the conveying platform, the unlocking member includes an unlocking block, the unlocking block is located below the support plate, and the unlocking block is used to abut against the bottom wall of the locking block through the mounting hole and the connecting hole, and an unlocking hole for the unlocking block to be inserted into is also provided on the locking block.

[0022] By adopting the above technical solution, when the lifting assembly drives the support plate to move upward until the connecting block is inserted into the connecting hole, the upper end of the connecting block contacts the locking inclined surface, thereby pushing the locking block, so that the locking block slides to the side wall of the connecting block and is inserted into the locking groove on the connecting block, thereby connecting the support plate and the mounting plate together, so that when the flow channel body is clamped, the stability between the support plate and the mounting plate is maintained, thereby facilitating the stability of the flow channel body. When the lifting assembly drives the support plate to descend, the support plate drives the mounting plate to descend through the connecting piece, and when the support plate descends until the unlocking block passes through the mounting hole and the connecting hole, the unlocking block contacts the bottom wall of the locking block and is inserted into the unlocking hole, so that the locking block is separated from the connecting block, thereby separating the support plate from the mounting plate, thereby facilitating the resetting of the mounting plate, and allowing the second clamping plate to limit the flow channel body in the conveying assembly again.

[0023] In a specific possible implementation manner, the lifting assembly includes a lifting cylinder, which is vertically mounted on the conveying platform, and a piston rod of the lifting cylinder extends upward to be connected to a support plate.

[0024] By adopting the above technical solution, the support plate is pushed upward by the lifting cylinder, so that the support plate can be conveniently connected to the mounting plate through the connecting piece, so as to facilitate the subsequent clamping of the flow channel body.

[0025] In a specific feasible implementation scheme, the blocking assembly includes a baffle, a connecting rod and a lifting plate, the baffle being installed on the conveying platform, and the baffle being located on the side of the first clamping plate away from the top plate, and a gap is left between the lower end of the baffle and the conveying assembly for the passage of the flow channel body, and the baffle is used to block the movement of the flow channel body, the connecting rod and the lifting plate are both installed on the conveying platform, and one end of the connecting rod is connected to the upper end of the baffle, and the other end extends toward the top plate, the lifting plate is located between the top plate and the baffle, and the upper end of the lifting plate is connected to the other end of the connecting rod, and the lower end of the lifting plate is used to be connected to the first clamping plate.

[0026] By adopting the above technical solution, when the lifting assembly drives the support plate to move upward, the support plate drives the first clamping plate to move upward, so that the first clamping plate pushes the lifting plate, so that the lifting plate drives the connecting rod to rotate, so that the connecting rod drives the baffle plate to move downward, thereby blocking the subsequent flow channel body through the baffle plate, thereby reducing the impact of the subsequent flow channel body on the flow channel body being assembled.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. The present application provides a tidying mechanism in the flow channel body, so as to facilitate adjustment of the gas flowing through the flow channel body through the tidying mechanism to keep the gas stable, and emits ultrasonic waves into the flow channel body through the transducer flow channel, and utilizes the reflection of the ultrasonic waves to measure the gas, so as to maintain the accuracy of the gas measurement.

[0029] 2. The present application provides a detachable flow channel lower cover, thereby facilitating the adjustment of the reflection angle of the ultrasonic wave by replacing the flow channel lower cover of different models, thereby facilitating the adaptation to gas with different concentrations and flows.

[0030] 3. The present application provides a limiting mechanism to facilitate limiting the flow channel body transported to the assembly station through the limiting mechanism, so that the filling mechanism can assemble the flow channel body one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the metering flow channel structure in the NB remote ultrasonic gas meter.

[0032] Figure 2 It is a schematic diagram of the installation of the rectifier in the embodiment of the present application.

[0033] Figure 3 It is a cross-sectional view of the flow channel body in the embodiment of the present application.

[0034] Figure 4 is an exploded view of the transducer and the transducer gland in the embodiment of the present application.

[0035] Figure 5 It is a schematic diagram of the equipment assembled for the metering flow channel structure in the NB remote ultrasonic gas meter.

[0036] Figure 6 It is a structural schematic diagram of the conveying mechanism in an embodiment of the present application.

[0037] Figure 7 It is a schematic diagram of the structure of the limiting mechanism in the embodiment of the present application.

[0038] Figure 8 It is a schematic diagram of the structure of the clamping assembly in an embodiment of the present application.

[0039] Fig. 9 It is a schematic diagram of the lifting assembly lifting the support plate in an embodiment of the present application.

[0040] Fig.10 It is a schematic diagram of the structure of the blocking component in the embodiment of the present application.

[0041] Description of reference numerals:

[0042] 1. Flow channel body; 11. Air inlet; 12. Air outlet pipe; 13. Inner cavity; 14. Reflection port; 2. Rectification mechanism; 21. Rectification sheet; 211. Main ductor baffle; 212. Rectification steel sheet; 3. Transducer flow channel; 4. Transducer; 5. Transducer gland; 6. Flow channel lower cover; 7. Assembly rack; 8. Conveying mechanism; 81. Conveying platform; 82. Conveying assembly; 821. Conveying roller; 822. Conveying chain; 823. Conveying motor; 83. Feeding assembly; 831. First vibration plate; 832. First feeding guide rail; 833. Second vibration plate; 834. Second feeding guide rail; 9. Limiting mechanism; 91. Clamping assembly; 911. First clamping plate; 912. Second clamping plate; 913. Clamping spring Spring; 914, support plate; 9141, mounting hole; 915, top plate; 916, mounting plate; 9161, connecting hole; 917, guide rod; 918, return spring; 919, support plate; 9110, connecting block; 91101, locking groove; 9120, locking block; 91201, slider; 91202, unlocking hole; 9130, locking spring; 9140, unlocking block; 9150, unlocking plate; 92, lifting assembly; 921, lifting cylinder; 93, blocking assembly; 931, baffle; 932, connecting rod; 933, lifting plate; 934, bracket; 935, blocking spring; 936, push plate; 10, loading mechanism; 101, loading robot arm; 102, loading suction cup. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings.

[0044] The present application embodiment discloses a metering flow channel structure for use in a NB remote ultrasonic gas meter, referring to Figure 1 and Figure 2 , including a flow channel body 1, the flow channel body 1 is L-shaped, one end of the flow channel body 1 is provided with an air inlet 11, the air inlet 11 is open, the other end of the flow channel body 1 is provided with an air outlet pipe 12, and the flow channel body 1 is provided with an inner cavity 13 for gas flow to pass through, the cross section of the inner cavity 13 is elliptical, the inner cavity 13 connects the air inlet 11 with the air outlet pipe 12, and a transducer flow channel 3 is fixedly arranged on the side wall of the flow channel body 1, and the transducer flow channel 3 is connected with the inner cavity 13 of the flow channel body 1. By delivering the gas to the air inlet 11 of the flow channel body 1, the gas enters the inner cavity 13 in the flow channel body 1 from the air inlet 11, and then is discharged from the air outlet pipe 12 of the flow channel body 1. When the gas flows through the flow channel body 1, the external ultrasonic source transmits ultrasonic waves to the inner cavity 13 through the transducer flow channel 3, and the gas in the flow channel inner cavity 13 is measured by the reflection of the ultrasonic waves.

[0045] Reference Figure 1 and Figure 2 A rectifying mechanism 2 is also provided in the inner cavity 13 of the flow channel body 1. The rectifying mechanism 2 is used to adjust the airflow entering the flow channel body 1 to keep the airflow stable.

[0046] Reference Figure 1 and Figure 2 The rectifying mechanism 2 includes rectifying pieces 21, and the rectifying pieces 21 include main rectifying baffles 211 and rectifying steel sheets 212. The main rectifying baffles 211 and the rectifying steel sheets 212 are both fixedly installed in the inner cavity 13 of the flow channel body 1, and a plurality of rectifying steel sheets 212 are provided. The main rectifying baffle 211 is provided in the middle part of the inner cavity 13 of the flow channel body 1, and a plurality of rectifying steel sheets 212 are distributed on both sides of the main rectifying baffle 211, and a gap is left between the main rectifying baffle 211 and the rectifying steel sheets 212 for airflow to pass through, and the distance between the rectifying steel sheets 212 on both sides of the main rectifying baffle 211 is equal, and the thickness of the main rectifying baffle 211 is greater than the thickness of the rectifying steel sheets 212. When the gas flows through the rectifying piece 21, the main flow partition 211 and the rectifying piece 21 guide and separate the gas into several thinner streams, which are easy to be detected by ultrasonic waves, so as to improve the accuracy of gas measurement.

[0047] Reference Figure 2 The cross-section of the inner top wall and the inner bottom wall in the area between the main airflow baffle 211 and the rectifying steel sheet 212 in the inner cavity 13 of the flow channel body 1 is arc-shaped, or the inner top wall and the inner bottom wall in the area between the main airflow baffle 211 and the rectifying steel sheet 212 in the inner cavity 13 of the flow channel body 1 are arc-shaped.

[0048] Reference Figure 3 and Figure 4A reflection port 14 is provided on the flow channel body 1 below the rectifying piece 21, and the reflection port 14 is communicated with the inner cavity 13 of the flow channel body 1. A flow channel lower cover 6 is detachably installed at the reflection port 14 of the flow channel body 1. The inner top wall of the flow channel lower cover 6 is used to reflect the airflow, and the reflection angle of the flow channel lower cover 6 to the airflow can be adjusted by replacing the flow channel lower cover 6 of different models, so as to adapt to the gas of different concentrations and flow rates, thereby facilitating the improvement of the accuracy of the test of the gas of different concentrations and flow rates.

[0049] Reference Figure 3 and Figure 4 There are two transducer channels 3, and a "V" shape is formed between the two transducer channels 3. The transducer channels 3 are used to connect to an external ultrasonic source, and one of the transducer channels 3 is a transmitting end, and the other transducer channel 3 is a receiving end. The external ultrasonic source transmits ultrasonic waves to the channel body 1 through the transducer channel 3, so as to detect the gas flowing through the channel body 1. The specific method of ultrasonic wave detection of gas is the prior art in this field, which will not be elaborated here. A transducer 4 and a transducer gland 5 are installed at the end of each transducer channel 3. The transducer 4 is detachably installed in the end of the transducer channel 3, and the transducer gland 5 is detachably installed at the end of the transducer channel 3, and the transducer gland 5 positions the transducer 4 at the end of the transducer channel 3. Two positioning buckles are fixedly installed on the top wall of the transducer gland 5. The two positioning buckles are respectively located at the two ends of the diameter of the transducer gland 5, and one end of the positioning buckle also extends away from the transducer gland 5. A positioning hole is provided on the side wall of the end of the positioning buckle away from the transducer gland 5. A positioning block is fixedly installed on the side wall of the end of the transducer channel 3. The positioning block is used to be plugged into the positioning hole. By installing the transducer 4 to the end of the transducer channel 3, and then by covering the transducer gland 5 on the end of the transducer channel 3, and moving the positioning buckle to the positioning block, and plugging the positioning block into the positioning hole, the transducer gland 5 is positioned on the transducer channel 3, thereby realizing the positioning of the transducer 4.

[0050] The working principle of the embodiment of the present application is as follows: by passing the gas into the flow channel body 1 from the air inlet 11 at one end of the flow channel body 1, the gas passes through the rectifying piece 21, and the gas flow is kept stable by the rectifying piece 21, and the gas is separated into a plurality of gas flows by the main flow baffle 211 and a plurality of rectifying steel sheets 212 in the rectifying piece 21, and then discharged from the flow channel body 1 from the gas outlet pipe 12. In this process, the external ultrasonic source transmits ultrasonic waves into the flow channel body 1 through the transducer 4 in one of the transducer flow channels 3 as the transmitting end, so that the ultrasonic waves follow the flow direction of the gas flow, so that the ultrasonic waves are partially absorbed or reflected by the gas, and the ultrasonic waves are reflected by the flow channel lower cover 6, so that the reflected ultrasonic waves are reflected from the other transducer flow channel 3 out of the flow channel body 1, and the transducer 4 in the transducer flow channel 3 is used as the receiving end, so as to detect the gas data, and then by changing the transmission direction of the ultrasonic waves, the transducer 4 originally used as the receiving end is changed to the transmitting end, The ultrasonic wave is emitted from the transducer flow channel 3 where the transducer 4 is located into the flow channel body 1, and is propagated in the countercurrent in the gas flow. After being absorbed and reflected by the gas flow, the ultrasonic wave is reflected by the flow channel lower cover 6, and is reflected to the transducer flow channel 3 where the transducer 4 originally served as the transmitting end is located. The transducer 4 in the transducer flow channel 3 is used as the receiving end to receive the ultrasonic wave, and the ultrasonic wave is analyzed, so that the flow velocity and flow rate of the gas in the flow channel body 1 are tested by using the principle of the time difference method, thereby facilitating the improvement of the accuracy of gas detection.

[0051] The present application also discloses an assembly device for a metering flow channel structure in a NB remote ultrasonic gas meter, referring to Figure 5 and Figure 6 , including an assembly frame 7, on which an assembly device is installed, the assembly device includes a conveying mechanism 8, a limiting mechanism 9 and a loading mechanism 10, the conveying mechanism 8 is used to convey the flow channel body 1, the transducer 4 and the transducer gland 5, and an assembly station is also provided on the conveying mechanism 8, the limiting mechanism 9 and the loading mechanism 10 are both arranged at the assembly station, and the limiting mechanism 9 is used to limit the flow channel body 1 conveyed in the conveying mechanism 8, and the loading mechanism 10 is used to install the transducer 4 and the transducer gland 5 on the flow channel body 1.

[0052] Reference Figure 6The conveying mechanism 8 includes a conveying platform 81, a conveying component 82 and a loading component 83. The conveying platform 81 is set in the assembly frame 7, and the middle part of the conveying platform 81 is hollow, and the conveying platform 81 is arranged along the length direction of the assembly frame 7. There are two groups of conveying components 82, and the two groups of conveying components 82 are respectively arranged on the side walls on both sides of the conveying platform 81. The conveying component 82 includes a plurality of conveying rollers 821, a conveying chain 822 and a conveying motor 823. The plurality of conveying rollers 821 are rotatably mounted on the conveying platform 81, and the plurality of conveying rollers 821 are arranged along the length direction of the conveying platform 81, and the plurality of conveying rollers 821 are used to convey the flow channel body 1, and the ends of each conveying roller 821 are coaxially mounted with a conveying wheel, the conveying chain 822 connects the conveying wheels on the plurality of conveying rollers, and the conveying motor 823 is fixedly mounted on the side wall of the conveying platform 81, and the output shaft of the conveying motor 823 is coaxially connected to one of the conveying rollers 821.

[0053] Reference Figure 6 The feeding assembly 83 includes a first vibration plate 831, a first feeding guide rail 832, a second vibration plate 833 and a second feeding guide rail 834. The first vibration plate 831 and the second vibration plate 833 are both mounted in the assembly frame 7 and are both located on one side of the length direction of the conveying platform 81 near the assembly station. The first feeding guide rail 832 is mounted in the assembly frame 7, and one end of the first feeding guide rail 832 is connected to the output end of the first vibration plate 831, and the other end of the first feeding guide rail 832 extends to the conveying platform 81, and the first vibration plate 831 is used for screening the transducer 4. The second feeding guide rail 834 is also mounted in the assembly frame 7, and one end of the second feeding guide rail 834 is connected to the output end of the second vibration plate 833, and the other end of the second feeding guide rail 834 extends to the conveying platform 81, and the second vibration plate 833 is used for screening the transducer gland 5.

[0054] Reference Figure 6 The filling mechanism 10 includes a filling robot arm 101 and a filling suction cup 102. The filling robot arm 101 is mounted in the assembly frame 7 and is located on the side of the conveying platform 81 away from the loading component 83. The filling suction cup 102 is fixedly installed on the output end of the filling robot arm 101, and the filling suction cup 102 is used to suck the transducer 4 and the transducer gland 5, and the filling suction cup 102 is used to assemble the transducer 4 and the transducer gland 5 to the flow channel body 1. The specific installation method is the existing technology in the field and will not be elaborated here.

[0055] Reference Figure 6 and Figure 7The limiting mechanism 9 includes a clamping assembly 91, a lifting assembly 92 and a blocking assembly 93. The clamping assembly 91 is arranged on the conveying platform 81 and is located between the two groups of conveying assemblies 82. The clamping assembly 91 includes a first clamping plate 911, a second clamping plate 912, a clamping spring 913, a support plate 914 and a top plate 915. The top plate 915 is mounted on the top wall of the conveying platform 81, and the top plate 915 is located above the conveying roller 821. The distance between the lower end of the top plate 915 and the conveying roller 821 is greater than the height of the flow channel body 1, and a push inclined surface is also provided on the side wall of the lower end of the top plate 915. The lifting assembly 92 is arranged between the two groups of conveying assemblies 82 in the conveying platform 81, the support plate 914 is installed on the lifting assembly 92, and the support plate 914 is located below the conveying roller 821, and the support plate 914 is also located between the two groups of conveying assemblies 82, and the first clamping plate 911 is fixedly installed in the vertical direction on the top wall of the support plate 914 at one end away from the top plate 915, and in the initial state, the upper end of the first clamping plate 911 is located below the conveying roller 821. A mounting plate 916 is slidably installed on the side wall of the conveyor platform 81 in the vertical direction. The mounting plate 916 is an L-shaped plate, and the vertical section of the mounting plate 916 is located at one end of the mounting plate 916 close to the first clamping plate 911. A guide rod 917 is fixedly installed on the side wall of the horizontal section of the mounting plate 916. The guide rod 917 is slidably connected to the side wall of the conveyor platform 81, and the mounting plate 916 is located above the support plate 914, and the mounting plate 916 is used to be connected to the support plate 914 through a connecting piece. A positioning plate is also fixedly installed on the side wall of the conveyor platform 81 below the mounting plate 916, and a reset spring 918 is arranged on the positioning plate, and one end of the reset spring 918 is fixedly connected to the top wall of the positioning plate, and the other end is fixedly connected to the side wall of the guide rod 917.

[0056] Reference Figure 7 and Figure 8 , the second clamping plate 912 is slidably mounted on the top wall of the mounting plate 916, and the second clamping plate 912 is located between the top plate 915 and the first clamping plate 911, and the sliding path of the second clamping plate 912 is consistent with the length direction of the conveying platform 81, and there is a space for storing the flow channel body 1 between the first clamping plate 911 and the second clamping plate 912, and in the initial position, the upper end of the second clamping plate 912 is located above the conveying roller 821, at this time, the reset spring 918 is in a relaxed state. The clamping spring 913 is mounted on the mounting plate 916, and one end of the clamping spring 913 is in contact with the side wall of the vertical section of the mounting plate 916, and the other end is in contact with the side wall of the second clamping plate 912. A support plate 919 is also fixedly mounted on the top wall of the vertical section of the mounting plate 916, and the support plate 919 is located above the clamping spring 913, and the support plate 919 is used to support the middle part of the flow channel body 1, and the cross-section of the outer contour of the middle part of the flow channel body 1 is rectangular.

[0057] Reference Figure 8 and Fig. 9The connecting member includes a connecting block 9110, a locking block 9120 and a locking spring 9130. A connecting hole 9161 is provided on the top wall of the horizontal section of the mounting plate 916. The connecting hole 9161 penetrates the mounting plate 916. The locking block 9120 is slidably installed in the connecting hole 9161 along the horizontal direction. A locking inclined surface is provided on the bottom wall of the locking block 9120 away from the second clamping plate 912. One end of the locking inclined surface is located on the bottom wall of the locking block 9120, and the other end extends obliquely upward to the locking block 9120 away from the second clamping plate 912. A slider 91201 is fixedly installed on the side wall of one end of the second clamping plate 912, and a sliding groove for sliding the slider 91201 is opened on the side wall of the connecting hole 9161 on the mounting plate 916, and a locking spring 9130 is installed in the sliding groove, and one end of the locking spring 9130 is in contact with the inner wall of one end of the vertical section of the sliding groove away from the mounting plate 916, and the other end is in contact with the side wall of the slider 91201, and the elastic force of the locking spring 9130 is smaller than the elastic force of the reset spring 918. A mounting hole 9141 is provided on the top wall of the support plate 914, and the mounting hole 9141 is aligned with the connecting hole 9161. The connecting block 9110 is fixedly installed in the mounting hole 9141, and one end of the connecting block 9110 extends upward from the mounting hole 9141, and the upper end of the connecting block 9110 is used to be inserted into the connecting hole 9161 on the mounting plate 916, and the upper end of the connecting block 9110 is used to contact the locking inclined surface of the locking block 9120, and a locking groove 91101 for inserting the locking block 9120 is provided on the side wall of the connecting block 9110.

[0058] Reference Fig. 9 An unlocking member is also installed on the conveying platform 81, and the unlocking member includes an unlocking block 9140. An unlocking plate 9150 is fixedly installed on the conveying platform 81, and the unlocking plate 9150 is located below the supporting plate 914. The unlocking block 9140 is fixedly installed on the top wall of the unlocking plate 9150 in the vertical direction, and the unlocking block 9140 is used to be inserted into the mounting hole 9141, and an unlocking hole 91202 for inserting the unlocking block 9140 is provided on the top wall of the locking block 9120, and an unlocking inclined surface is also provided on the top wall of the unlocking block 9140, one end of the unlocking inclined surface extends downward from the top wall of the unlocking block 9140 to the side wall of the unlocking block 9140 close to the first clamping plate 911, and the unlocking inclined surface is used to contact the bottom wall of the locking block 9120 located at one end of the unlocking hole 91202 close to the first clamping plate 911.

[0059] Reference Figure 8 and Fig. 9The support plate 914 is lifted upward by the lifting assembly 92, so that the support plate 914 drives the first clamping plate 911 and the connecting block 9110 to move upward to the mounting plate 916, so that the connecting block 9110 is inserted into the connecting hole 9161, and the upper end of the connecting block 9110 contacts the locking inclined surface of the end of the locking block 9120, so that the locking block 9120 is pushed toward the direction of the second clamping plate 912 and the locking spring 9130 is compressed, so that the locking block 9120 is The end slides to the side wall of the connecting block 9110, and as the supporting plate 914 drives the connecting block 9110 to continue to move upward, the locking block 9120 moves to the locking groove 91101 on the connecting block 9110, so that the locking block 9120 is inserted into the locking groove 91101 under the action of the locking spring 9130, and at this time, the top wall of the supporting plate 914 also contacts the bottom wall of the mounting plate 916, so that the mounting plate 916 is positioned on the supporting plate 914.

[0060] Reference Figure 8 and Fig. 9 Then, as the lifting assembly 92 continues to drive the support plate 914 to move upward, the support plate 914 pushes the mounting plate 916 upward and stretches the reset spring 918, so that the first clamping plate 911 and the second clamping plate 912 move upward, so that the upper end of the first clamping plate 911 contacts the push-up inclined surface at the lower end of the top plate 915, thereby pushing the second clamping plate 912 in the direction of the first clamping plate 911 and compressing the clamping spring 913, thereby pushing the flow channel body 1 in the direction of the second clamping plate 912. Then, as the supporting plate 919 on the mounting plate 916 moves upward until it contacts the bottom wall of the flow channel body 1, the supporting plate 919 lifts the flow channel body 1, so that the flow channel body 1 is separated from the conveying assembly 82. At this time, the side walls of the first clamping plate 911 and the side walls of the second clamping plate 912 contact the side walls on both sides of the flow channel body 1 respectively. When the upper end of the second clamping plate 912 continues to move upward, the upper end of the second clamping plate 912 continues to resist the pushing inclined surface at the lower end of the top plate 915, thereby further pushing the second clamping plate 912 in the direction of the first clamping plate 911 and compressing the clamping spring 913, so that the second clamping plate 912 and the first clamping plate 911 clamp the rectangular part in the middle of the flow channel body 1 to facilitate subsequent assembly work.

[0061] Reference Figure 8 and Fig. 9 When the lifting assembly 92 drives the support plate 914 to move downward, the support plate 914 drives the mounting plate 916 to move downward through the connecting block 9110 and the locking block 9120 inserted in the connecting block 9110, thereby driving the flow channel body 1 to descend to the conveying assembly 82 again, and as the mounting plate 916 drives the second clamping plate 912 to descend, the first clamping plate 911 also slides and resets in the direction away from the second clamping plate 912 under the action of the clamping spring 913, thereby loosening the flow channel body 1.

[0062] Reference Figure 8 and Fig. 9 , and then the lifting component 92 continues to drive the support plate 914 to move downward, so that the support plate 914 drives the mounting plate 916 to continue to move downward, so that the mounting plate 916 drives the second clamping plate 912 to move downward until the upper end of the second clamping plate 912 is gradually lower than the plane where the conveying roller 821 is located, thereby releasing the second clamping plate 912 from limiting the flow channel body 1, thereby facilitating the conveying component 82 to transport the flow channel body 1 to the next process. And when the support plate 914 descends to the unlocking block 9140, the reset spring 918 is in a compressed state, the unlocking block 9140 is inserted into the mounting hole 9141, and the unlocking inclined surface at the upper end of the unlocking block 9140 contacts the bottom wall of the unlocking hole 91202 on the locking block 9120, thereby pushing the locking block 9120, so that the locking block 9120 compresses the locking spring 9130, and the locking block 9120 is gradually separated from the connecting block 9110, thereby releasing the limiting effect of the locking block 9120 on the connecting block 9110, so that the mounting plate 916 moves upward and resets under the action of the reset spring 918, so that the upper end of the second clamping plate 912 rises to pass over the conveying roller 821, so that the second clamping plate 912 is conveniently used to limit the flow channel body 1 transported on the conveying assembly 82.

[0063] Reference Figure 8 The lifting assembly 92 includes a lifting cylinder 921, which is fixedly installed in the conveying platform 81 along the vertical direction and is located between the two groups of conveying assemblies 82. The lifting cylinder 921 is located below the mounting plate 916, and the piston rod of the lifting cylinder 921 extends upward, and the support plate 914 is fixedly installed on the piston rod of the lifting cylinder 921.

[0064] Reference Fig. 9 and Fig.10The blocking assembly 93 includes a baffle 931, a connecting rod 932 and a lifting plate 933. A bracket 934 is mounted on the conveying platform 81. The bracket 934 is located on the side of the first clamping plate 911 away from the second clamping plate 912. The baffle 931 is slidably mounted on the bracket 934 along the vertical direction. In the initial position, the baffle 931 is located above the conveying roller 821, and the distance between the lower end of the baffle 931 and the conveying roller 821 is greater than the height of the flow channel body 1. The connecting rod 932 is rotatably mounted in the bracket 934, and the rotating axis of the connecting rod 932 is perpendicular to the axis of the length direction of the conveying platform 81. One end of the connecting rod 932 extends in an obliquely upward direction to the upper end of the baffle 931 and is hinged to the side wall at the upper end of the baffle 931. A waist-shaped groove for sliding the connecting shaft of the hinge baffle 931 is also provided on the side wall of the connecting rod 932 near one end of the baffle 931. The other end of the connecting rod 932 extends in a direction away from the baffle 931. The lifting plate 933 is slidably installed in the bracket 934 along the vertical direction, and the lifting plate 933 is also hinged to the other end of the connecting rod 932. The side wall of the connecting rod 932 near the lifting plate 933 is also provided with a waist-shaped groove for the hinge axis of the lifting plate 933 to slide. The side wall of the bracket 934 is provided with a guide groove for the end of the lifting plate 933 to slide. A blocking spring 935 is also installed in the guide groove. One end of the blocking spring 935 contacts the inner top wall of the guide groove, and the other end contacts the top wall of the end of the lifting plate 933. A push plate 936 is fixedly installed on the side wall of the first clamping plate 911 away from the second clamping plate 912. The push plate 936 is used to contact the lower end of the lifting plate 933.

[0065] Reference Fig. 9 and Fig.10 , the support plate 914 is pushed up by the lifting cylinder 921, so that the support plate 914 drives the first clamping plate 911 to move upward, so that the push plate 936 on the first clamping plate 911 moves upward to the lower end of the lifting plate 933, and as the first clamping plate 911 continues to move upward, the push plate 936 pushes the lifting plate 933 upward, so that the lifting plate 933 compresses the blocking spring 935 and pushes one end of the connecting rod 932 upward, so that the other end of the connecting rod 932 presses the baffle 931 downward, so that the lower end of the baffle 931 drops to the conveying roller 821, thereby blocking the flow channel plate ladder transported on the conveying roller 821, so as to facilitate the assembly of the flow channel body 1 one by one. When the lifting cylinder 921 drives the support plate 914 to descend, the support plate 914 drives the first clamping plate 911 to descend, and the first clamping plate 911 drives the push plate 936 to descend until it is separated from the lifting plate 933, so that the lifting plate 933 moves downward and resets under the action of the blocking spring 935, so that the lifting plate 933 pulls one end of the connecting rod 932 downward, so that the other end of the connecting rod 932 pulls the baffle 931 upward, so that the baffle 931 moves upward and resets, so that the baffle 931 releases the limit on the flow channel body 1 transported on the conveying roller 821.

[0066] The working principle of the embodiment of the present application is as follows: the flow channel body 1 is transported to the conveying roller 821 one by one in sequence, and the conveying roller 821 is driven to rotate by the conveying motor 823, so that the flow channel body 1 is transported to the filling mechanism 10. When the flow channel body 1 is transported to the filling mechanism 10, the flow channel body 1 is limited by the second clamping plate 912, so that the flow channel body 1 stops moving, and then the flow channel body 1 is lifted by the lifting component 92, and the flow channel body 1 is clamped by the clamping component 91, and the subsequent flow channel body 1 is blocked by the blocking component 93. At the same time, the transducer 4 and the transducer gland 5 are respectively transported to the filling mechanism 10 by the first vibration plate 831 and the second vibration plate 833, and then the loading suction cup 102 is driven by the loading robot arm 101 to absorb the transducer 4 and the transducer gland 5, and the transducer 4 and the transducer gland 5 are installed in the transducer flow channel 3 in the flow channel body 1, so as to complete the assembly of the flow channel structure.

[0067] After the assembly is completed, the lifting mechanism drives the flow channel body 1 to fall back onto the conveying roller 821, and the second clamping plate 912 releases the limit on the flow channel body 1, thereby facilitating the transportation of the assembled flow channel body 1 to the next process. At the same time, the blocking component 93 releases the blocking of the subsequent flow channel bodies 1, so that the flow channel bodies 1 can be continuously transported one by one to the filling mechanism 10 for assembly.

[0068] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembly device for a metering flow channel structure in a NB remote ultrasonic gas meter, characterized in that: The invention comprises an assembly frame (7), wherein an assembly station is provided on the assembly frame (7), and an assembly device is installed on the assembly frame (7) at the assembly station, wherein the assembly device comprises a conveying mechanism (8), a limiting mechanism (9) and a loading mechanism (10), wherein the conveying mechanism (8) is used to convey a flow channel body (1), a transducer (4) and a transducer gland (5), wherein the conveying mechanism (8) comprises a conveying platform (81), a transmission assembly (82) and a loading assembly (83), wherein the limiting mechanism (9) is used to limit the flow channel body (1), and wherein the loading mechanism (10) is used to load the transducer (4) and the transducer gland (5) into the flow channel body (1), wherein the limiting mechanism (9 ... The transducer gland (5) is mounted on the flow channel body (1), the limiting mechanism (9) comprises a clamping assembly (91), a lifting assembly (92) and a blocking assembly (93), the clamping assembly (91) comprises a first clamping plate (911), a second clamping plate (912), a clamping spring (913), a support plate (914) and a top plate (915), the top plate (915) is mounted on the conveying platform (81), and a gap is left between the lower end of the top plate (915) and the conveying assembly (82) for the flow channel body (1) to pass through, and the lower end of the top plate (915) is provided with a push-up inclined surface, the lifting spring (92) and the support plate (914) are provided with a push-up inclined surface, and the lifting spring (93) and the support plate (915) are provided with a push-up inclined surface. The lifting assembly (92) is mounted on the conveying platform (81), the support plate (914) is mounted on the lifting assembly (92), the first clamping plate (911) is mounted on the support plate (914), a mounting plate (916) is also mounted on the conveying platform (81), the mounting plate (916) is located above the support plate (914), and the support plate (914) and the mounting plate (916) are connected by a connecting piece, a return spring (918) is also mounted on the conveying platform (81), the return spring (918) is connected to the mounting plate (916), and the second clamping plate (912) The first clamping plate (911) and the second clamping plate (912) are slidably mounted on the mounting plate (916), and a space for storing the flow channel body (1) is reserved between the first clamping plate (911) and the second clamping plate (912), and the second clamping plate (912) is located near the top plate (915), and the upper end of the second clamping plate (912) is used to abut against the top push inclined surface, the clamping spring (913) is mounted on the mounting plate (916), and the clamping spring (913) is also connected to the second clamping plate (912), and the blocking component (93) is mounted on the conveying platform (81), and the blocking component (93) is used to be connected to the first clamping plate (911);The metering flow channel structure used in the NB remote ultrasonic gas meter comprises a flow channel body (1), one end of the flow channel body (1) is provided with an air inlet (11), and the other end is provided with an air outlet pipe (12), the flow channel body (1) is provided with an inner cavity (13) for air flow to pass through, the inner cavity (13) connects the air inlet (11) with the air outlet pipe (12), a transducer flow channel (3) is provided on the side wall of the flow channel body (1), the transducer flow channel (3) is connected with the inner cavity (13) of the flow channel body (1), a transducer (4) and a transducer gland (5) are provided on the transducer flow channel (3), the transducer gland (5) is used to position the transducer (4) on the transducer flow channel (3), the cross section of the inner cavity (13) is elliptical, a rectifying mechanism (2) is provided in the inner cavity (13), and the rectifying mechanism (2) is used to adjust the air flow. ; 2. The assembly device for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The rectifying mechanism (2) comprises a rectifying piece (21), and the rectifying piece (21) comprises a main rectifying baffle (211) and a rectifying steel piece (212). The main rectifying baffle (211) and the rectifying steel piece (212) are both arranged in the inner cavity (13) of the flow channel body (1), and the rectifying steel piece (212) is arranged on both sides of the main rectifying baffle (211).

3. The assembly equipment for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The inner top wall and the inner bottom wall of the inner cavity (13) are located in an arc-shaped cross section at the area formed between the main flow baffle (211) and the rectifying steel sheet (212).

4. The assembly equipment for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The conveying platform (81) is installed on the assembly frame (7), the conveying component (82) is installed on the conveying platform (81), the conveying component (82) is used to convey the flow channel body (1), the loading component (83) is installed on the assembly platform, and the loading component (83) is connected to the conveying component (82), and the loading component (83) is used to convey the transducer (4) and the transducer gland (5).

5. The assembly equipment for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The connecting member comprises a connecting block (9110), a locking block (9120) and a locking spring (9130); a connecting hole (9161) is provided on the mounting plate (916); the locking block (9120) is slidably mounted in the connecting hole (9161); the locking spring (9130) is also mounted in the connecting hole (9161); and one end of the locking spring (9130) is also connected to the locking block (9120); a mounting hole (9141) is provided on the support plate (914); the connecting block (9110) is mounted in the mounting hole (9141); and one end of the connecting block (9110) extends upward; and the locking block (91 A locking inclined surface for abutting against the upper end of the connecting block (9110) is provided on the bottom wall of the end of the supporting plate (914), and a locking groove (91101) for inserting the locking block (9120) is provided on the upper end of the connecting block (9110). An unlocking member is also installed on the conveying platform (81), and the unlocking member includes an unlocking block (9140). The unlocking block (9140) is located below the supporting plate (914), and the unlocking block (9140) is used to abut against the bottom wall of the locking block (9120) through the mounting hole (9141) and the connecting hole (9161), and the locking block (9120) is also provided with an unlocking hole (91202) for inserting the unlocking block (9140).

6. The assembly equipment for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The lifting assembly (92) includes a lifting cylinder (921), which is installed on the conveying platform (81) in a vertical direction, and the piston rod of the lifting cylinder (921) extends upward and is connected to the support plate (914).

7. The assembly equipment for the metering flow channel structure in the NB remote ultrasonic gas meter according to claim 1 is characterized in that: The blocking assembly (93) comprises a baffle (931), a connecting rod (932) and a lifting plate (933), wherein the baffle (931) is mounted on the conveying platform (81), and the baffle (931) is located on a side of the first clamping plate (911) away from the top plate (915), and a gap is left between the lower end of the baffle (931) and the conveying assembly (82) for the flow channel body (1) to pass through, and the baffle (931) is used to block the flow channel body (1) from moving forward, and the connecting rod (932) is used to prevent the flow channel body (1) from moving forward. The rod (932) and the lifting plate (933) are both installed on the conveying platform (81), and one end of the connecting rod (932) is connected to the upper end of the baffle (931), and the other end extends toward the top plate (915). The lifting plate (933) is located between the top plate (915) and the baffle (931), and the upper end of the lifting plate (933) is connected to the other end of the connecting rod (932), and the lower end of the lifting plate (933) is used to be connected to the first clamping plate (911).

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