Ultrasonic flowmeter for oil and gas field production measurement

Abstract

The utility model discloses an ultrasonic flowmeter for oil and gas field production measurement, which comprises a shell, and an ultrasonic converter is arranged above the shell through a meter neck. Two front mounting pipes are arranged on one side of the shell, and two rear mounting pipes are arranged on the other side of the shell; and ultrasonic transducers are arranged in the two front mounting pipes and the two rear mounting pipes. According to the ultrasonic flowmeter for oil and gas field production measurement, noise in a pipeline firstly enters a connecting pipe through airflow flowing, impurities in the airflow are filtered through a filter screen arranged on a mounting plate, and then the entering airflow is rectified through a first rectifying plate and a second rectifying plate; and noise is absorbed through the first sound-absorbing cotton and the second sound-absorbing cotton, so that the measurement accuracy of the gas flowmeter can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic flowmeter production equipment, in particular to an ultrasonic flowmeter used for oil and gas field production measurement. Background Art

[0002] Ultrasonic flowmeter is a velocity flowmeter that measures fluid flow based on the ultrasonic time difference method. Ultrasonic flowmeters are widely used in the field of industrial fluid measurement and control. When the medium flows in the instrument body, it affects the transmission speed of ultrasonic waves in the downstream and upstream directions, and the receiving time of the paired transducers is different. The ultrasonic flowmeter converter determines the volume flow of the fluid by identifying and analyzing the time difference.

[0003] A dual-channel gas ultrasonic flow meter with publication number CN213301352U relates to the technical field of gas flow meters, comprising: a shell, a support arranged on the top of the shell, a control component fixedly connected to the support, and an air pipe arranged inside the shell; a first groove for fixing a first transducer and a second groove for fixing a second transducer are longitudinally arranged on the first side of the shell; a third groove and a fourth groove are longitudinally arranged on the second side of the shell. The flow meter provided in the present application realizes dual-channel transmission and reception by using the first transducer as the first transmitting end of the ultrasonic pulse, the second transducer as the second transmitting end of the ultrasonic pulse, the third transducer as the first receiving end of the ultrasonic pulse, and the fourth transducer as the second receiving end of the ultrasonic pulse, thereby obtaining two sets of flow parameters, and then performing weighted averaging on the above two sets of flow parameters, thereby improving the measurement accuracy of the ultrasonic flow meter. However, since the ultrasonic gas flow meter measures based on the sound pulses emitted and detected by the transducer, when the gas flows, the noise generated in the pipeline will be transmitted to the position of the gas flow meter through the gas flowing through the pipeline, making it impossible for the transducer to detect and distinguish the working pulse signal normally, which will affect the accuracy of the measurement results of the gas flow meter. Utility Model Content

[0004] The utility model aims to solve the shortcomings existing in the prior art, and comprises a shell, wherein an ultrasonic converter is arranged on the top of the shell through a meter neck for connection; two front mounting tubes are arranged on one side of the shell, and two rear mounting tubes are arranged on the other side of the shell; ultrasonic transducers are arranged inside the two front mounting tubes and the two rear mounting tubes, and the ultrasonic transducers are connected to the ultrasonic converters through cables; one end of the shell is detachably connected to the connecting tube through bolts, and a mounting plate is arranged at one end of the connecting tube away from the shell, and a filter is arranged on the mounting plate; a first rectifier plate, a second rectifier plate, a first sound-absorbing cotton and a second sound-absorbing cotton are arranged in sequence inside the connecting tube from left to right.

[0005] As a further description of the above technical solution: a plugging cap is threadedly connected to one end of the front mounting tube away from the shell.

[0006] As a further description of the above technical solution: a first rubber pad is arranged at one end of the connecting pipe close to the shell, and a second rubber pad is arranged at one end of the connecting pipe away from the shell.

[0007] As a further description of the above technical solution: the mounting plate is connected to the inner thread of the connecting pipe, and a toggle column is arranged on the mounting plate.

[0008] As a further description of the above technical solution: the front mounting tube and the rear mounting tube have the same structure.

[0009] As a further description of the above technical solution: the two front mounting tubes and the two rear mounting tubes are symmetrically arranged on the shell.

[0010] The above technical solution has the following advantages or beneficial effects:

[0011] The utility model allows the noise in the pipeline to first enter the connecting pipe through the airflow, first filters the impurities in the airflow through the filter screen arranged on the mounting plate, then the first rectifying plate and the second rectifying plate rectify the incoming airflow, and then the first sound-absorbing cotton and the second sound-absorbing cotton absorb the noise, thereby improving the measurement accuracy of the gas flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of an ultrasonic flowmeter in one embodiment of the utility model;

[0013] Figure 2 It is a side view of an ultrasonic flow meter in one embodiment of the utility model;

[0014] Figure 3 for Figure 1 A cross-sectional view of the housing in an ultrasonic flow meter;

[0015] Figure 4 for Figure 1 Schematic diagram of the structure of the connecting pipe in the ultrasonic flow meter;

[0016] Figure 5 for Figure 1 Schematic diagram of the structure of the front mounting tube in an ultrasonic flow meter.

[0017] Legend:

[0018] 1. Shell; 2. Meter neck; 3. Ultrasonic converter; 4. Front mounting tube; 5. Rear mounting tube; 6. Ultrasonic transducer; 7. Bolts; 8. Connecting tube; 9. Mounting plate; 10. Filter; 11. First rectifier plate; 12. Second rectifier plate; 13. First sound-absorbing cotton; 14. Second sound-absorbing cotton; 15. Cable; 16. Plug cap; 17. First rubber pad; 18. Second rubber pad; 19. Toggle column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1-5 As shown, the utility model is an ultrasonic flowmeter for oil and gas field production measurement, comprising: a shell 1, an ultrasonic converter 3 is arranged on the top of the shell 1 through a meter neck 2; two front mounting tubes 4 are arranged on one side of the shell 1, and two rear mounting tubes 5 are arranged on the other side of the shell 1; ultrasonic transducers 6 are arranged inside the two front mounting tubes 4 and the two rear mounting tubes 5, and the ultrasonic transducers 6 are connected to the ultrasonic converter 3 through cables 15; one end of the shell 1 is detachably connected to the connecting pipe 8 through bolts 7, and a mounting plate 9 is arranged at the end of the connecting pipe 8 away from the shell 1, and a filter screen 10 is arranged on the mounting plate 9; a first rectifier plate 11, a second rectifier plate 12, a first sound-absorbing cotton 13 and a second sound-absorbing cotton 14 are arranged in sequence inside the connecting pipe 8 from left to right.

[0023] In this embodiment, before the ultrasonic transducer 6 measures, the noise in the pipeline first enters the connecting pipe 8 through the airflow, and the impurities in the airflow are first filtered by the filter 10 arranged on the mounting plate 9, and then the first rectifier plate 11 and the second rectifier plate 12 rectify the incoming airflow, and then the first sound-absorbing cotton 13 and the second sound-absorbing cotton 14 absorb the noise, which can improve the measurement accuracy of the gas flow meter.

[0024] Among them, by using the transducers in the two front installation tubes 4 as the first transmitting end and the second transmitting end of the ultrasonic pulse, and using the transducers in the two rear installation tubes 5 as the first receiving end and the second receiving end of the ultrasonic pulse, dual-channel transmission and reception are realized, and then two groups of flow parameters are obtained. By performing weighted averaging on the above two groups of flow parameters, the measurement accuracy of the ultrasonic flowmeter is improved.

[0025] like Figure 1 and Figure 5 As shown, specifically, a plugging cap 16 is threadedly connected to one end of the front mounting tube 4 away from the shell 1; the plugging cap 16 can be separated from the front mounting tube 4 by rotating the plugging cap 16, so as to facilitate the installation and disassembly of the internal ultrasonic transducer 6.

[0026] like Figure 2 and Figure 4 As shown, specifically, a first rubber pad 17 is provided at one end of the connecting pipe 8 close to the shell 1, and a second rubber pad 18 is provided at one end of the connecting pipe 8 away from the shell 1; the first rubber pad 17 and the second rubber pad 18 can enhance the sealing performance of the connecting pipe 8 during installation.

[0027] like Figure 2 and Figure 4 As shown, specifically, the mounting plate 9 is connected to the internal thread of the connecting tube 8, and a toggle column 19 is provided on the mounting plate 9; the mounting plate 9 is connected to the internal thread of the connecting tube 8, so that the mounting plate 9 can be installed and disassembled by rotating the mounting plate 9, which is convenient for the inspection and replacement of the filter screen 10, and the mounting plate 9 can be conveniently rotated by the toggle column 19.

[0028] like Figure 1 and Figure 2 As shown, specifically, the front mounting tube 4 and the rear mounting tube 5 have the same structure, and the two front mounting tubes 4 and the two rear mounting tubes 5 are symmetrically arranged on the housing 1 .

[0029] Working principle: Before the ultrasonic transducer 6 is measured, the noise in the pipeline first enters the connecting pipe 8 through the airflow, and the impurities in the airflow are first filtered by the filter 10 arranged on the mounting plate 9, and then the first rectifier plate 11 and the second rectifier plate 12 rectify the incoming airflow, and then the first sound-absorbing cotton 13 and the second sound-absorbing cotton 14 absorb the noise, which can improve the measurement accuracy of the gas flow meter.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An ultrasonic flowmeter for oil and gas field production measurement, characterized in that: It comprises a housing (1), and an ultrasonic converter (3) is arranged on the upper side of the housing (1) through a meter neck (2); Two front mounting tubes (4) are arranged on one side of the shell (1), and two rear mounting tubes (5) are arranged on the other side of the shell (1); Ultrasonic transducers (6) are arranged inside the two front mounting tubes (4) and the two rear mounting tubes (5), and the ultrasonic transducers (6) are connected to the ultrasonic converters (3) via cables (15); One end of the housing (1) is detachably connected to a connecting pipe (8) via a bolt (7); an end of the connecting pipe (8) away from the housing (1) is provided with a mounting plate (9); and a filter screen (10) is provided on the mounting plate (9); A first rectifying plate (11), a second rectifying plate (12), a first sound-absorbing cotton (13) and a second sound-absorbing cotton (14) are arranged in sequence from left to right inside the connecting pipe (8).

2. The ultrasonic flowmeter for oil and gas field production measurement according to claim 1, characterized in that: The end of the front mounting tube (4) away from the housing (1) is threadedly connected with a plug cap (16).

3. The ultrasonic flowmeter for oil and gas field production measurement according to claim 1, characterized in that: A first rubber pad (17) is provided at one end of the connecting pipe (8) close to the shell (1), and a second rubber pad (18) is provided at one end of the connecting pipe (8) away from the shell (1).

4. The ultrasonic flowmeter for oil and gas field production measurement according to claim 1, characterized in that: The mounting plate (9) is connected to the inner thread of the connecting pipe (8), and a toggle column (19) is provided on the mounting plate (9).

5. The ultrasonic flowmeter for oil and gas field production measurement according to claim 1, characterized in that: The front mounting tube (4) and the rear mounting tube (5) have the same structure.

6. The ultrasonic flowmeter for oil and gas field production measurement according to claim 1, characterized in that: The two front mounting tubes (4) and the two rear mounting tubes (5) are symmetrically arranged on the housing (1).

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