Gas ultrasonic flow sensor structure capable of realizing multi-point measurement
By setting up a multi-point measurement structure in the gas ultrasonic flow sensor and using multiple probe holders and probes, the problem of measurement inaccuracy caused by irregular flow patterns in large-diameter gas flow measurement is solved, achieving higher measurement accuracy and stability.
Patent Information
- Application Number
- CN202520373083.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing technologies for measuring gas flow in large-diameter pipes suffer from inaccurate measurements due to irregular flow patterns, especially in the presence of turbulence and vortices, where single-point measurements cannot accurately calculate gas flow.
The gas ultrasonic flow sensor adopts a multi-point measurement structure. By setting multiple probe holders and probes inside the pipeline, multiple measurement points are formed, including head, middle and tail probe holders. The probes are paired and matched to form a measurement acoustic path. They are inserted into the pipeline at an angle to perform multi-point measurements. The acoustic path can be adjusted according to the pipe diameter.
It improves the accuracy and stability of gas flow measurement, solves the problem of measurement inaccuracy caused by irregular flow patterns, and enhances the accuracy of measurement and the ability to resist wind speed fluctuations.
Smart Images
Figure CN223610908U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of gas ultrasonic flow sensor structures of multipoint measurement, belong to gas flow sensor technical field. BACKGROUND
[0002] Gas ultrasonic wave flow sensor (flowmeter) is a kind of instrument equipment for measuring gas flow, it utilizes the sound velocity difference principle of ultrasonic wave propagation, the sound velocity difference of ultrasonic wave airflow forward and reverse propagation is measured to calculate the flow rate and flow of gas. At present, when measuring the gas flow of larger pipe diameter (pipe diameter is greater than 600mm), generally adopt single insertion type measurement structure, single point measurement is carried out in pipeline, and the sound path of sensor measurement is generally 160-270mm, and the center of sound path is located at d / 4 from pipe inner wall. This way can reach 1.5% when the gas flow state in field pipeline is better, but the gas flow rate in field pipeline is generally high, and the flow state is irregular turbulent flow, and even vortex can be generated, and single point measurement of prior art will lead to measurement error. SUMMARY
[0003] The utility model aims at providing a kind of gas ultrasonic flow sensor structures of multipoint measurement, use ultrasonic sensor with multipoint measurement function, simultaneously measure in the multiple points of pipeline, calculate the gas flow in pipeline, can adjust the sound path of sensor according to the size of pipe diameter, measure the gas flow of large-diameter pipeline using the gas ultrasonic flow sensor of multipoint measurement, measurement precision is high, solve the above technical problems existing in prior art.
[0004] The technical scheme of the utility model is:
[0005] A kind of gas ultrasonic flow sensor structures of multipoint measurement, including probe body and probe body connecting rod, the front end of probe body connecting rod is provided with probe body;The probe body includes probe body shell, first probe fixed seat, probe, middle probe fixed seat and tail probe fixed seat, first probe fixed seat, middle probe fixed seat and tail probe fixed seat are sequentially arranged in the length direction of probe body shell, the number of probe is multiple, first probe fixed seat, middle probe fixed seat and tail probe fixed seat are all equipped with probe, and adjacent probe is matched to constitute measurement sound path in pairs, the distance between probe matched in pairs is sound path L, and multiple pairs of probes along the length direction of probe body shell constitute the gas ultrasonic flow sensor of multipoint measurement.
[0006] The number of the intermediate probe fixing seats is two, probes are arranged on the two sides of the two intermediate probe fixing seats, the probe on the head probe fixing seat and the probe on one side of the first intermediate probe fixing seat are matched to form a first measuring point, the probe on the other side of the first intermediate probe fixing seat and the probe on one side of the second intermediate probe fixing seat are matched to form a second measuring point, and the probe on the other side of the second intermediate probe fixing seat and the probe on the tail probe fixing seat are matched to form a third measuring point, thereby forming a three-point measuring gas ultrasonic flow sensor.
[0007] The three-point measuring gas ultrasonic flow sensor is inserted into a pipeline in an inclined mode, the inner diameter of the pipeline is d, the second measuring point in the middle is located at the center of the pipeline, the first measuring point and the third measuring point are respectively located at a distance of d / 4 from the inner walls of the two sides of the pipeline, and the three points simultaneously measure and calculate the gas flow in the pipeline.
[0008] The head probe fixing seat, the intermediate probe fixing seat and the tail probe fixing seat are welded to the inner wall of the probe body shell, and the probes are fixed to the head probe fixing seat, the intermediate probe fixing seat and the tail probe fixing seat respectively.
[0009] The wire penetrating pipes are arranged between the probes, the wire penetrating pipes are welded to the inner wall of the probe body shell, and the probe signal lines of the probes are led out from the wire penetrating pipes.
[0010] The sound paths L of the gas ultrasonic flow sensors of the measuring points are the same.
[0011] The probe body connecting rod and the probe body are fastened into an integral whole through threads.
[0012] According to the inner diameter d of the pipeline to be measured and the number of the measuring points of the multi-point measuring gas ultrasonic flow sensor, the sound path L of the multi-point measuring gas ultrasonic flow sensor is determined, the multi-point measuring gas ultrasonic flow sensor is installed on the pipeline in an insertion mode (a mature existing technology), and the multi-point measuring gas ultrasonic flow sensor simultaneously measures and calculates the gas flow in the pipeline.
[0013] The multi-point measuring gas ultrasonic flow sensor is used to measure the gas flow in a large-diameter pipeline, the measuring points are increased from one point in the existing technology to multiple points, the measuring precision is high, the measurement inaccuracy caused by irregular flow state in the prior art when measuring the gas flow in a large-diameter pipeline is effectively solved, and in addition, the multi-point measuring function ultrasonic sensor is supported by the head probe fixing seat and the tail probe fixing seat, the shaking of the sensor caused by high wind speed in the pipeline can be minimized to the maximum extent, and the measurement stability and accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The installation schematic diagram of the embodiment of the utility model;
[0015] Figure 2 The structure schematic diagram of the ultrasonic flow sensor of the embodiment of the utility model;
[0016] In the drawing: pipeline 1, base 2, ball valve 3, probe body connecting rod 4, sealing nipple 5, O-shaped sealing ring 6, conical sealing washer 7, locking mother 8, probe body 9, tail base 10, tail sealing cover 11, probe body shell 12, head probe fixing base 13, probe 14, middle probe fixing base 15, threading pipe 16, probe signal line 17, tail probe fixing base 18, mounting hole 19. DETAILED DESCRIPTION
[0017] The utility model will be further explained by the embodiment in combination with the drawings.
[0018] A kind of gas ultrasonic flow sensor structure of multiple-point measurement, including probe body 9 and probe body connecting rod 4, the front end of probe body connecting rod 4 is provided probe body 9;The probe body 9 includes probe body shell 12, head probe fixing base 13, probe 14, middle probe fixing base 15 and tail probe fixing base 18, head probe fixing base 13, middle probe fixing base 15 and tail probe fixing base 18 are sequentially arranged in the length direction of probe body shell 12, the number of probe 14 is multiple, head probe fixing base 13, middle probe fixing base 15 and tail probe fixing base 18 are all equipped with probe, adjacent probe is matched to constitute measurement acoustic path in pairs, the distance between the probe matched in pairs is acoustic path L, and multiple pairs of probes along the length direction of probe body shell 12 constitute the gas ultrasonic flow sensor of multiple-point measurement.
[0019] The number of the middle probe fixing base 15 is more than one, and probes are arranged on both sides of the middle probe fixing base 15.
[0020] The number of the middle probe fixing base 15 is two, and probes are arranged on both sides of the two middle probe fixing bases 15, the probe on the head probe fixing base 13 is matched in pairs with the probe on one side of the first middle probe fixing base, to constitute a first measuring point;The probe on the other side of the first middle probe fixing base is matched in pairs with the probe on one side of the second middle probe fixing base, to constitute a second measuring point;The probe on the other side of the second middle probe fixing base is matched in pairs with the probe on the tail probe fixing base 18, to constitute a third measuring point, and the whole constitutes a gas ultrasonic flow sensor of three-point measurement.
[0021] The three-point measuring gas ultrasonic flow sensor is inserted into the pipeline 1 obliquely, the inner diameter of the pipeline 1 is d, the second measuring point in the middle is located in the center of the pipeline, and the first measuring point and the third measuring point are respectively located at a distance of d / 4 from the inner walls of the two sides of the pipeline, and the three points measure and calculate the gas flow in the pipeline simultaneously.
[0022] The head probe fixing seat 13, the middle probe fixing seat 15 and the tail probe fixing seat 18 are welded on the inner wall of the probe body shell 12, and the probes are fixed on the head probe fixing seat 13, the middle probe fixing seat 15 and the tail probe fixing seat 18 respectively.
[0023] The threading pipe 16 is provided between the probes, the threading pipe 16 is welded on the inner wall of the probe body shell 12, and the probe signal lines 17 of the probes are led out from the threading pipe 16.
[0024] The sound paths L of the gas ultrasonic flow sensors of the measuring points are the same. The probe body shell 12 is made of a stainless steel seamless steel pipe, and the sound path of the sensor is determined according to the different pipeline diameters required by the on-site measurement.
[0025] The probe body connecting rod 4 and the probe body 9 are fastened into an integral whole through threads.
[0026] The multi-point measuring gas ultrasonic flow sensor is inserted into the pipeline 1, the base 2 is welded on one side of the outer wall of the pipeline 1, the mounting hole 19 is arranged at a position corresponding to the base 2 on the other side of the pipeline 1, and the tail base 10 is welded on the outer wall of the pipeline outside the mounting hole 19; the base 2 is provided with a hole, and the ball valve 3 and the sealing nipple 5 are sequentially arranged in the hole, the probe body 9 and the probe body connecting rod 4 are inserted into the pipeline 1 through the sealing nipple 5, the ball valve 3 and the base 2, and the end of the probe body 9 is inserted into the mounting hole 19 and the tail base 10.
[0027] The tail base 10 is provided with an observation hole, which facilitates the observation and guidance of the accurate insertion of the probe body 9 into the tail base 10, and the tail base 10 is provided with a tail sealing cover 11, which is tightened to close the observation hole.
[0028] The O-shaped sealing ring 6, the conical sealing gasket 7 and the locking mother 8 are arranged between the sealing nipple 5 and the probe body connecting rod 4, so as to realize the sealing with the probe body connecting rod 4.
[0029] According to the inner diameter d of the pipeline required to be measured and the number of measuring points of the multi-point measuring gas ultrasonic flow sensor, the sound path L of the multi-point measuring gas ultrasonic flow sensor is determined; the multi-point measuring gas ultrasonic flow sensor is installed on the pipeline in a plug-in mode (a mature existing technology); and the multi-point measuring gas ultrasonic flow sensor measures and calculates the gas flow in the pipeline simultaneously.
[0030] In the embodiment, the ultrasonic sensor with multi-point measurement function is obliquely inserted into the field pipeline, three measurement points are arranged, the sound path is adjusted according to the size of the pipe diameter, the inner diameter of the pipeline 1 is d, the outer diameter is D, the second measurement point in the middle is located at the center of the pipeline, the first measurement point and the third measurement point are respectively located at the position of d / 4 away from the upper wall and the lower wall of the pipeline, the three points are measured at the same time, and the gas flow in the pipeline is calculated.
[0031] The utility model discloses a plurality of measuring points are arranged in the same sensor, and the sound path can be reasonably adjusted and determined according to the size of the inner diameter of the pipeline.
[0032] When installing the gas ultrasonic flow sensor with multi-point measurement, first, the base 2 is welded on the outer wall of one side of the pipeline 1, the mounting hole 19 is arranged at the position corresponding to the base 2 on the other side of the pipeline 1, the tail base 10 is welded on the outer wall of the pipeline outside the mounting hole 19; the ball valve 3 and the sealing nipple 5 are sequentially installed in the base 2, the probe body 9 and the probe body connecting rod 4 are inserted into the pipeline 1 through the sealing nipple 5, the ball valve 3 and the base 2, and the end of the probe body 9 is inserted into the mounting hole 19 and the tail base 10. The tail base 10 is provided with the observation hole, which is convenient for observing and guiding the accurate insertion of the probe body 9 into the tail base 10, the tail base 10 is provided with the tail sealing cover 11, and the tail sealing cover 11 is tightened to close the observation hole. The O-shaped sealing ring 6, the conical sealing ring 7 and the locking mother 8 between the sealing nipple 5 and the probe body connecting rod 4 realize the sealing of the probe body connecting rod 4.
Claims
1. A multi-point-measurable gas ultrasonic flow sensor structure, characterized by: The probe body (9) and the probe body connecting rod (4) are included, and the front end of the probe body connecting rod (4) is provided with the probe body (9); the probe body (9) comprises a probe body shell (12), a head probe fixing seat (13), a probe (14), a middle probe fixing seat (15) and a tail probe fixing seat (18), the head probe fixing seat (13), the middle probe fixing seat (15) and the tail probe fixing seat (18) are sequentially arranged in the length direction of the probe body shell (12), the number of the probes (14) is multiple, the head probe fixing seat (13), the middle probe fixing seat (15) and the tail probe fixing seat (18) are all provided with probes, and adjacent probes are matched in pairs to form a measuring sound path, the distance between the probes matched in pairs is an acoustic path L, and multiple pairs of probes along the length direction of the probe body shell (12) form a gas ultrasonic flow sensor for multi-point measurement.
2. A multi-point measurable gas ultrasonic flow sensor structure according to claim 1, characterized in that: The number of the middle probe fixing seats (15) is two, probes are arranged on the two sides of the two middle probe fixing seats (15), the probe on the head probe fixing seat (13) is matched in pairs with the probe on one side of the first middle probe fixing seat to form a first measuring point, the probe on the other side of the first middle probe fixing seat is matched in pairs with the probe on one side of the second middle probe fixing seat to form a second measuring point, and the probe on the other side of the second middle probe fixing seat is matched in pairs with the probe on the tail probe fixing seat (18) to form a third measuring point, thereby forming a gas ultrasonic flow sensor for three-point measurement.
3. A multi-point measurable gas ultrasonic flow sensor structure according to claim 2, characterized in that: The gas ultrasonic flow sensor for three-point measurement is inserted into the pipeline (1) obliquely, the inner diameter of the pipeline (1) is d, the second measuring point in the middle is located at the center of the pipeline, the first measuring point and the third measuring point are respectively located at a distance of d / 4 from the inner walls of the two sides of the pipeline, and the three points simultaneously measure and calculate the gas flow in the pipeline.
4. A multi-point measurable gas ultrasonic flow sensor structure according to claim 1 or 2, characterized in that: The head probe fixing seat (13), the middle probe fixing seat (15) and the tail probe fixing seat (18) are welded on the inner wall of the probe body shell (12), and the probes are fixed on the head probe fixing seat (13), the middle probe fixing seat (15) and the tail probe fixing seat (18) respectively.
5. A multi-point measurable gas ultrasonic flow sensor structure according to claim 1 or 2, characterized in that: The probes are provided with a wire penetrating pipe (16), the wire penetrating pipe (16) is welded on the inner wall of the probe body shell (12), and the probe signal lines (17) of the probes are led out from the wire penetrating pipe (16).
6. A multi-point measurable gas ultrasonic flow sensor structure according to claim 1 or 2, characterized in that: The probe body connecting rod (4) and the probe body (9) are fastened into an integral whole through threads.