CN212807173U - Detachable airflow ultrasonic flowmeter runner structure - Google Patents

Abstract

The utility model discloses a detachable air current ultrasonic flowmeter runner structure, include: the main part, go up lid and lower lid, import runner and export runner have been seted up on the left side wall and the right side wall of main part respectively, still be provided with the measurement cylinder that is used for cutting off import runner and export runner in the main part, go up the lid and seted up buffer chamber and buffer chamber down in the lid respectively, import runner and lower buffer chamber intercommunication, export runner and last buffer chamber intercommunication, the inside of measuring the cylinder has seted up the measurement runner, the both ends of measuring the runner communicate with last buffer chamber and lower buffer chamber respectively, the length direction of measuring the runner is perpendicular with the direction of admitting air of import runner, the one end of measuring the runner towards buffer chamber down is provided with the rectifier, the air current that awaits measuring flows through lower buffer chamber in proper order by the entering of import runner, the rectifier, flow out from the export runner after measuring runner and last buffer. The utility model has the advantages of need not long straight tube section alright in order to overcome inhomogeneous flow field to the disturbance of measurement, improve measurement accuracy.

Description

Detachable airflow ultrasonic flowmeter runner structure

Technical Field

The utility model relates to a flowmeter technical field, in particular to detachable air current ultrasonic flowmeter runner structure.

Background

Ultrasonic flow meters are meters that measure flow by detecting the effect of fluid flow on an ultrasonic beam (or pulse). The ultrasonic flowmeter is the same as an electromagnetic flowmeter, belongs to an unimpeded flowmeter because a flow passage of the flowmeter is not provided with any obstructive piece, is a flowmeter suitable for solving the problem of difficult flow measurement, and has outstanding advantages particularly in the aspect of large-caliber flow measurement, thereby having very wide application in the aspect of gas measurement such as natural gas, petroleum gas, coal gas and the like.

In the practical application process, the granule impurity of smuggleing secretly in the gas piles up in the flowmeter easily, cause the jam to the runner in the flowmeter easily, influence gaseous velocity of flow, it is not high to lead to the degree of accuracy of the data that the flowmeter measured and obtained, consequently need regularly clear up the flowmeter, but present flowmeter when clearing up the ware, need dismantle it from the pipeline, need the professional to operate, must install the flowmeter on the pipeline again after the clearance is accomplished, the actual operation degree of difficulty is big, waste time and energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detachable air current ultrasonic flowmeter runner structure, it has need not to dismantle the flowmeter from the pipeline, can clear up simple structure, convenient operation's advantage to the flowmeter on the pipeline.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a detachable airflow ultrasonic flowmeter flow channel structure, characterized by includes: the main body comprises a front side wall, a rear side wall, a left side wall and a right side wall, an inlet runner and an outlet runner are respectively arranged on the left side wall and the right side wall of the main body, a measuring cylinder for separating the inlet runner and the outlet runner is also arranged in the main body, an upper buffer cavity and a lower buffer cavity are respectively arranged in the upper cover body and the lower cover body, the inlet runner is communicated with the lower buffer cavity, the outlet runner is communicated with the upper buffer cavity, a measuring runner is arranged in the measuring cylinder, two ends of the measuring runner are respectively communicated with the upper buffer cavity and the lower buffer cavity, the length direction of the measuring runner is vertical to the air inlet direction of the inlet runner, and a rectifier is arranged at one end of the measuring runner facing the lower buffer cavity,

the upper cover body, the lower cover body and the main body are detachably connected, sealing edges are arranged on the surfaces of the upper cover body and the lower cover body facing the main body, mounting grooves for the sealing edges to be inserted are formed in the two ends of the main body, the outer walls of the sealing edges are abutted against the inner walls of the mounting grooves,

the utility model discloses a measuring device, including main part, detection subassembly, measuring cylinder, probe mounting hole, ultrasonic transducer, temperature sensor and pressure sensor, all be provided with the detection subassembly on the preceding lateral wall of main part and the back lateral wall, the axis symmetric distribution of detection subassembly for measuring the cylinder, the detection subassembly is including offering the probe mounting hole on preceding lateral wall and back lateral wall, be provided with ultrasonic transducer in the probe mounting hole, two ultrasonic transducer's axis is located same straight line, the angle that the axle center line of two ultrasonic transducer is connected and the central line that measures the runner is the acute angle, go up the lid top and install temperature sensor.

By adopting the technical scheme, the air flow enters the lower buffer cavity for buffering after flowing in from the inlet flow channel, the unstable flow field of the air flow enters the lower buffer cavity for buffering, the instability of the flow field is reduced, and then the air flow enters the measuring flow channel after being rectified by the rectifier. The flow direction of the air flow in the measuring flow channel is perpendicular to the air inlet direction of the inlet flow channel, the influence of external noise and disturbance is reduced, radial air inlet and axial measurement are achieved, and the measuring precision is enhanced. The upper buffer cavity which is opposite to the lower buffer cavity is used for buffering the airflow flowing out of the measuring flow channel, so that the consistency of the upper pressure and the lower pressure in the flowmeter is ensured, the pressure loss in the flowmeter is reduced, and the air pressure of the airflow is not influenced while the measuring accuracy is ensured. When needing to clear up the flowmeter, only need to dismantle last lid and lower lid, just can clear up measuring runner, last cushion chamber, import runner and exit flow way down, need not to dismantle the flowmeter from the pipeline, the operating personnel of being convenient for clears up easy operation, convenient to use.

Further setting: the detection subassembly on preceding lateral wall of main part and the back lateral wall all sets up to two sets of, lies in two sets of detection subassembly parallel arrangement with one side.

Through adopting above-mentioned technical scheme, all set up two sets of detection subassemblies on the preceding lateral wall of main part and back lateral wall, the contrast monophonic measurement is measured to the binaural in same direction, the utility model discloses guaranteed to measure the stability that obtains data, improved measuring precision.

Further setting: a first lateral buffer cavity is formed in the bottom of the main body and located on one side, away from the inlet flow channel, of the measuring cylinder, and the first lateral buffer cavity is communicated with the lower buffer cavity.

By adopting the technical scheme, the flow field of the air flow entering the lower buffer cavity from the inlet channel can generate radial components to influence the stability of the flow field, the first lateral buffer cavity is arranged on one side of the measurement main body, which is far away from the inlet channel, so that the radial components of the flow field are weakened, the stability of the air flow field in the lower buffer cavity is improved, the subsequent rectifier can rectify the air flow conveniently, the rectification effect is enhanced, and the measurement precision is improved.

Further setting: the top of the main body is provided with a second lateral buffer cavity which is the same as the first lateral buffer cavity in size and shape, and the first lateral buffer cavity and the second lateral buffer cavity are symmetrically arranged relative to the axis of the measuring column body.

By adopting the technical scheme, the first lateral buffer cavity can cause certain influence on the flow field of the air flow when balancing the radial component of the air flow field, and generates some components deviating from the axial direction of the measuring flow channel, the second lateral buffer cavity and the first lateral buffer cavity are equal in size and shape, and are symmetrical relative to the axis of the measuring cylinder, so that the stability of the air pressure in the main body is kept, the component of the flow field caused by the first lateral buffer cavity is balanced, and the measuring precision is improved.

Further setting: a sealing groove is formed in the outer wall of the sealing edge, and a sealing ring is arranged in the sealing groove.

Through adopting above-mentioned technical scheme, the leakproofness between upper cover body, lower lid and the main part has been guaranteed in setting up of seal groove and sealing washer.

To sum up, the utility model discloses following beneficial effect has: need not to dismantle the flowmeter from the pipeline, can clear up the flowmeter on the pipeline, simple structure, convenient operation can overcome inhomogeneous flow field disturbance and to the measured influence of air current ultrasonic flowmeter, reduces external influence, improves measuring precision.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view taken in the direction B-B in fig. 2.

In the figure, 1, an upper cover body; 2. a main body; 3. a lower cover body; 4. an inlet flow channel; 5. an outlet flow passage; 6. a measuring cylinder; 7. an upper buffer chamber; 8. a lower buffer chamber; 9. a rectifier; 10. a detection component; 11. a pressure sensor; 12. a temperature sensor; 13. a first lateral buffer chamber; 14. a second lateral buffer chamber; 15. a sealing edge; 16. a seal ring; 21. a left side wall; 22. a right side wall; 23. a front side wall; 24. a rear sidewall; 61. a measuring flow channel; 101. a probe mounting hole; 102. an ultrasonic transducer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, a detachable flow passage structure of an ultrasonic flow meter for gas flow comprises: the measuring device comprises a main body 2, an upper cover body 1 and a lower cover body 3, wherein the main body 2 comprises a front side wall 23, a rear side wall 24, a left side wall 21 and a right side wall 22, the left side wall 21 and the right side wall 22 of the main body 2 are respectively provided with an inlet runner 4 and an outlet runner 5, the main body 2 is internally provided with a measuring cylinder 6 for separating the inlet runner 4 and the outlet runner 5, the upper cover body 1 and the lower cover body 3 are respectively provided with an upper buffer cavity 7 and a lower buffer cavity 8, the inlet runner 4 is communicated with the lower buffer cavity 8, the outlet runner 5 is communicated with the upper buffer cavity 7, the measuring cylinder 6 is internally provided with a measuring runner 61, two ends of the measuring runner 61 are respectively communicated with the upper buffer cavity 7 and the lower buffer cavity 8, the length direction of the measuring runner 61 is vertical to the air inlet direction of the inlet runner 4, one end of the measuring runner 61 facing the lower buffer cavity 8 is provided with a rectifier 9, the airflow to be measured enters from an inlet flow channel 4 and flows through a lower buffer cavity 8, a rectifier 9, a measuring flow channel 61 and an upper buffer cavity 7 in sequence and then flows out from an outlet flow channel 5, detection assemblies 10 are arranged on a front side wall 23 and a rear side wall 24 of a main body 2, the detection assemblies 10 are symmetrically distributed relative to the axis of a measuring cylinder 6, each detection assembly 10 comprises a probe mounting hole 101 formed in the front side wall 23 and the rear side wall 24, an ultrasonic transducer 102 is arranged in each probe mounting hole 101, the axes of the two ultrasonic transducers 102 are located on the same straight line, the angle formed by the axis connecting line of the two ultrasonic transducers 102 and the central line of the measuring flow channel 61 is an acute angle, a temperature sensing mounting through hole and a pressure sensing mounting through hole are formed in the top of an upper cover body 1, and a temperature sensor 12 and a pressure sensor 11 are respectively mounted in the temperature sensing mounting through hole and the, the temperature sensor 12 and the pressure sensor 11 are used to measure the temperature and the pressure in the upper buffer chamber 7.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the detection assemblies 10 on the front side wall 23 and the rear side wall 24 of the main body 2 are both set to be two sets, the two sets of detection assemblies 10 located on the same side are arranged in parallel, the bottom of the main body 2 is provided with a first lateral buffer cavity 13, the first lateral buffer cavity 13 is located on one side of the measurement cylinder 6 away from the inlet flow channel 4, and the first lateral buffer cavity 13 is communicated with the lower buffer cavity 8. The top of the main body 2 is provided with a second lateral buffer cavity 14 which has the same size and shape as the first lateral buffer cavity 13, and the first lateral buffer cavity 13 and the second lateral buffer cavity 14 are symmetrically arranged relative to the axis of the measuring column 6. Go up lid 1, down lid 3 and main part 2 and all be connected through the bolt, go up lid 1 and lid 3 down and all be provided with sealed edge 15 towards the one side of main part 2, the both ends of main part 2 are all seted up and are supplied sealed edge 15 male mounting grooves, sealed outer wall along 15 is contradicted with the inner wall of mounting groove. A sealing groove is formed in the outer wall of the sealing edge 15, and a sealing ring 16 is arranged in the sealing groove.

The utility model discloses a theory of operation: firstly, the utility model is installed in a gas pipeline to be measured, the gas flow in the pipeline enters into the lower buffer chamber 8 and the first lateral buffer chamber 13 after flowing in from the inlet flow passage 4, the unstable flow field of the gas flow is buffered in the lower buffer chamber 8 to reduce the instability of the flow field, the first lateral buffer chamber 13 balances the component of the flow field in the radial direction, the gas flow passes through the rectifier 9 and is divided into a plurality of strands of direct currents by the rectifier 9, then the gas flow is converged and flows into the measurement flow passage 61 vertical to the air inlet direction of the inlet flow passage 4, the ultrasonic wave energy transducers 102 on the two groups of detection assemblies 10 on the same surface on the main body 2 transmit ultrasonic waves and are received by the two groups of detection assemblies 10 on the opposite surface after passing through the gas flow, the gas flow passes through the measurement flow passage 61 and enters into the upper buffer chamber 7 and the second lateral buffer chamber 14 to buffer the gas, the measurement of the flow rate is completed. When the flowmeter needs to be cleaned, only the upper cover body 1 and the lower cover body 3 need to be detached, the upper cover body 1 and the lower cover body 3 can be taken down, the measuring flow channel 61, the upper buffer cavity 7, the lower buffer cavity 8, the inlet flow channel 4 and the outlet flow channel 5 can be cleaned, and the flowmeter does not need to be detached from the pipeline.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims (5)

1. A detachable airflow ultrasonic flowmeter flow channel structure, characterized by includes: the measuring device comprises a main body (2), an upper cover body (1) and a lower cover body (3), wherein the main body (2) comprises a front side wall (23), a rear side wall (24), a left side wall (21) and a right side wall (22), an inlet flow channel (4) and an outlet flow channel (5) are respectively arranged on the left side wall (21) and the right side wall (22) of the main body (2), a measuring cylinder (6) for separating the inlet flow channel (4) and the outlet flow channel (5) is further arranged in the main body (2), an upper buffer cavity (7) and a lower buffer cavity (8) are respectively arranged in the upper cover body (1) and the lower cover body (3), the inlet flow channel (4) is communicated with the lower buffer cavity (8), the outlet flow channel (5) is communicated with the upper buffer cavity (7), a measuring flow channel (61) is arranged in the measuring cylinder (6), two ends of the measuring flow channel (61) are respectively communicated with the upper buffer cavity (7) and the lower buffer cavity (8), the length direction of the measuring flow channel (61) is vertical to the air inlet direction of the inlet flow channel (4), one end of the measuring flow channel (61) facing the lower buffer cavity (8) is provided with a rectifier (9),

the upper cover body (1) and the lower cover body (3) are detachably connected with the main body (2), sealing edges (15) are respectively arranged on the surfaces of the upper cover body (1) and the lower cover body (3) facing the main body (2), mounting grooves for the sealing edges (15) to be inserted are respectively arranged at the two ends of the main body (2), the outer walls of the sealing edges (15) are abutted against the inner walls of the mounting grooves,

all be provided with on preceding lateral wall (23) and the back lateral wall (24) of main part (2) and survey subassembly (10), survey subassembly (10) and for the axis symmetric distribution of measuring cylinder (6), survey subassembly (10) including offering probe mounting hole (101) on preceding lateral wall (23) and back lateral wall (24), be provided with ultrasonic transducer (102) in probe mounting hole (101), the axis of two ultrasonic transducer (102) is located same straight line, the angle that the axle center line of two ultrasonic transducer (102) and the central line of measuring runner (61) are the acute angle, go up lid (1) top and install temperature sensor (12) and pressure sensor (11).

2. A detachable flow channel structure of an ultrasonic airflow meter according to claim 1, wherein the detection assemblies (10) on the front side wall (23) and the rear side wall (24) of the main body (2) are arranged in two sets, and the two sets of detection assemblies (10) on the same side are arranged in parallel.

3. The detachable flow channel structure of the airflow ultrasonic flowmeter according to claim 1, wherein a first lateral buffer cavity (13) is formed at the bottom of the main body (2), the first lateral buffer cavity (13) is located at one side of the measuring cylinder (6) far away from the inlet flow channel (4), and the first lateral buffer cavity (13) is communicated with the lower buffer cavity (8).

4. The detachable flow channel structure of the airflow ultrasonic flowmeter according to claim 3, wherein a second lateral buffer cavity (14) having the same size and shape as the first lateral buffer cavity (13) is formed at the top of the main body (2), and the first lateral buffer cavity (13) and the second lateral buffer cavity (14) are symmetrically arranged relative to the axis of the measuring cylinder (6).

5. The detachable flow channel structure of the airflow ultrasonic flowmeter according to claim 1, wherein a sealing groove is formed in the outer wall of the sealing edge (15), and a sealing ring (16) is arranged in the sealing groove.

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