CN215573153U - Measurement component for multi-sound-path ultrasonic gas meter and gas meter with same - Google Patents
Measurement component for multi-sound-path ultrasonic gas meter and gas meter with same Download PDFInfo
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- CN215573153U CN215573153U CN202123152280.2U CN202123152280U CN215573153U CN 215573153 U CN215573153 U CN 215573153U CN 202123152280 U CN202123152280 U CN 202123152280U CN 215573153 U CN215573153 U CN 215573153U
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Abstract
The utility model discloses a metering component for a multi-sound-path ultrasonic gas meter and a gas meter with the same, and relates to the technical field of gas metering equipment, wherein the metering component comprises a gas flow passage, one end of the gas flow passage is provided with a gas inlet part, and the other end of the gas flow passage is provided with a gas outlet part; the gas flow channel comprises a first-stage flow channel and a second-stage flow channel which are sequentially arranged along the flowing direction of gas, the first-stage flow channel is communicated with the second-stage flow channel through a reducing flow channel, and the sectional area of the reducing flow channel is smaller than that of the first-stage flow channel and that of the second-stage flow channel; and the first-stage runner and the second-stage runner are both provided with ultrasonic sensors. The metering component for the multi-sound-path ultrasonic gas meter and the gas meter provided with the same have the advantages of high signal-to-noise ratio, high metering precision, no influence of the environment and capability of effectively avoiding the influence of abnormal signals on the metering result.
Description
Technical Field
The utility model relates to the technical field of gas metering equipment, in particular to a metering component for a multi-sound-path ultrasonic gas meter and a gas meter with the same.
Background
The ultrasonic gas meter is used as a gas measuring device, the ultrasonic gas meter measures the gas flow rate by adopting a time difference method principle, and the flow rate of the fluid is reflected by measuring the difference of the forward flow and the reverse flow propagation time speeds of ultrasonic signals in the fluid. The ultrasonic gas meter has the advantages that due to the characteristics of a full electronic structure, the ultrasonic gas meter does not have a mechanical transmission part, does not have mechanical noise during operation, is not influenced by mechanical abrasion and faults, does not deteriorate in metering precision after long-term use, and is good in durability and longer in service life; the diaphragm type gas meter has the advantages of no magnetic sensing element, insusceptible measurement to magnetic field, and incomparable advantages in aspects of volume, precision, repeatability, service life, maintenance and intelligent expansion compared with the conventional diaphragm type gas meter. Based on the advantages of the ultrasonic gas meter, the ultrasonic gas meter is more and more widely applied to the industrial and civil fields.
Most of the metering components of the ultrasonic gas meters in the current market are provided with ultrasonic sensors in gas flow channels, the cross sections of the gas flow channels are rectangular, and a plurality of longitudinal flow deflectors penetrating through the whole gas flow channel are arranged in the gas flow channels. The structure can effectively reduce transition flow and turbulent flow in the gas flow channel, but due to the existence of the flow deflector in the gas flow channel, the amplitude of an ultrasonic receiving signal can be greatly reduced, and particularly, the signal to noise ratio is remarkably reduced under the environments of high temperature, low temperature, high humidity and the like, so that the metering precision is seriously reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above defects, an object of the present invention is to provide a metering component for a multi-acoustic-path ultrasonic gas meter and a gas meter provided with the same, wherein the metering component for the multi-acoustic-path ultrasonic gas meter and the gas meter provided with the same have high signal-to-noise ratio and high metering precision, are not affected by the environment, and can effectively avoid the influence of abnormal signals on the metering result.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a metering component for a multi-sound-path ultrasonic gas meter comprises a gas flow passage, wherein one end of the gas flow passage is provided with a gas inlet part, and the other end of the gas flow passage is provided with a gas outlet part; the gas flow channel comprises a first-stage flow channel and a second-stage flow channel which are sequentially arranged along the flowing direction of gas, the first-stage flow channel is communicated with the second-stage flow channel through a reducing flow channel, and the sectional area of the reducing flow channel is smaller than that of the first-stage flow channel and that of the second-stage flow channel; and the first-stage runner and the second-stage runner are both provided with ultrasonic sensors.
The first-stage flow channel comprises a first diameter expanding portion communicated with the gas inlet portion, the first diameter expanding portion is communicated with a first diameter expanding flow channel, the first diameter expanding flow channel is communicated with a first diameter reducing portion, and the first diameter reducing portion is communicated with the diameter reducing flow channel.
The second-stage flow channel comprises a second diameter expanding part communicated with the diameter reducing flow channel, the second diameter expanding part is communicated with a second diameter expanding flow channel, the second diameter expanding flow channel is communicated with a second diameter reducing part, and the second diameter reducing part is communicated with the gas outlet part.
The cross sections of the first diameter expanding flow passage and the second diameter expanding flow passage are equal; the cross-sectional area of the reducing flow channel is equal to the cross-sectional areas of the gas inlet part and the gas outlet part.
The ultrasonic sensor is provided with four pairs, and the first-stage flow channel and the second-stage flow channel are respectively provided with two pairs.
The first pair of ultrasonic sensors comprise a first ultrasonic sensor and a second ultrasonic sensor which are oppositely arranged on the first diameter expanding part and the first diameter reducing part, the second pair of ultrasonic sensors comprise a third ultrasonic sensor and a fourth ultrasonic sensor which are oppositely arranged on the first diameter reducing part and the first diameter expanding part, the first ultrasonic sensor and the third ultrasonic sensor are transmitting ends, and the second ultrasonic sensor and the fourth ultrasonic sensor are receiving ends; the third pair of ultrasonic sensor is including relative setting in the second hole enlargement portion with fifth ultrasonic sensor and sixth ultrasonic sensor on the second hole enlargement portion, the fourth pair of ultrasonic sensor is including relative setting in the second hole enlargement portion with seventh ultrasonic sensor and eighth ultrasonic sensor on the second hole enlargement portion, fifth ultrasonic sensor with seventh ultrasonic sensor is the transmitting terminal, sixth ultrasonic sensor with eighth ultrasonic sensor is the receiving terminal.
Wherein the cross section of the gas flow passage is circular.
Wherein, be equipped with the fairing part in the gas inlet portion.
The rectifying component comprises a cylindrical shell, a plurality of airflow channels are arranged in the shell, each airflow channel is cylindrical, and the axial direction of each airflow channel is consistent with the axial direction of the shell.
A gas meter comprises a shell, wherein a metering component for the multi-sound-path ultrasonic gas meter is arranged in the shell.
After the technical scheme is adopted, the utility model has the beneficial effects that:
the metering component for the multi-sound-path ultrasonic gas meter comprises a gas flow channel, wherein the gas flow channel comprises a first-stage flow channel and a second-stage flow channel which are sequentially arranged along the flowing direction of gas, the first-stage flow channel is communicated with the second-stage flow channel through a reducing flow channel, and the sectional area of the reducing flow channel is smaller than that of the first-stage flow channel and that of the second-stage flow channel; and the first-stage flow channel and the second-stage flow channel are both provided with ultrasonic sensors. When measuring, gas can obtain the buffering in first order runner and second level runner, the air current becomes more steady, all install ultrasonic sensor on first order runner and the second level runner simultaneously, can gather the flow signal of multiple spot, get the average value of a plurality of signals when calculating, if meet in the air current have impurity or the air current rectification abnormal signal that produces when unsatisfactory can reject this signal, only keep normal signal to calculate, thereby can effectual holistic measurement accuracy of improvement, the effectual influence of avoiding abnormal signal to the measurement result, and can not receive the influence of environment, the SNR is higher.
The metering component is arranged in the shell of the gas meter, so that the gas meter has high metering precision and high signal-to-noise ratio, and can effectively avoid the influence of abnormal signals on a metering result.
In summary, the metering component for the multi-acoustic-path ultrasonic gas meter and the gas meter with the same solve the technical problems of low metering precision and the like of the gas meter in the prior art, have high signal-to-noise ratio and high metering precision, are not influenced by the environment, and can effectively avoid the influence of abnormal signals on the metering result.
Drawings
FIG. 1 is a schematic structural diagram of a metering component for a multi-acoustic-path ultrasonic gas meter according to the present invention;
FIG. 2 is a schematic view of the fairing component of FIG. 1;
in the figure: 10. a gas flow channel, 11, a first expanded diameter flow channel, 12, a gas inlet portion, 13, a reduced diameter flow channel, 14, a gas outlet portion, 15, a second expanded diameter portion, 16, a first expanded diameter portion, 17, a first reduced diameter portion, 18, a second expanded diameter flow channel, 19, a second reduced diameter portion, 20, a rectifying member, 22, a gas flow channel, 24, a housing, 30a, a first ultrasonic sensor, 30b, a second ultrasonic sensor, 32a, a third ultrasonic sensor, 32b, a fourth ultrasonic sensor, 34a, a fifth ultrasonic sensor, 34b, a sixth ultrasonic sensor, 36a, a seventh ultrasonic sensor, 36b, and an eighth ultrasonic sensor.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples.
All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a metering component for a multi-acoustic-path ultrasonic gas meter includes a gas flow channel 10, and in the present embodiment, a radial cross section of the gas flow channel 10 is preferably circular, so that the gas flow channel 10 is designed to be circular, which is more convenient for rectification, and is beneficial to improving metering accuracy, and meanwhile, the metering component is easy to install and position, can improve manufacturability and consistency, and improves production efficiency.
As shown in fig. 1, the gas flow passage 10 has a gas inlet portion 12 at one end and a gas outlet portion 14 at the other end. The gas flow channel 10 includes a first flow channel and a second flow channel sequentially arranged along a gas flowing direction, the first flow channel is communicated with the gas inlet portion 12, the second flow channel is communicated with the gas outlet portion 14, a reducing flow channel 13 is communicated between the first flow channel and the second flow channel, namely, the first flow channel is communicated with the second flow channel through the reducing flow channel 13. The radial sectional area of the reducing flow passage 13 is smaller than the radial sectional areas of the first-stage flow passage and the second-stage flow passage, that is, the diameter of the reducing flow passage 13 is smaller than the diameters of the first-stage flow passage and the second-stage flow passage. In the present embodiment, it is preferable that the radial sectional area of the first-stage flow passage is equal to the radial sectional area of the same portion of the second-stage flow passage, the radial sectional area of the reduced-diameter flow passage 13 is equal to the radial sectional areas of the gas inlet portion 12 and the gas outlet portion 14, that is, the diameter of the first-stage flow passage is equal to the diameter of the same portion of the second-stage flow passage, and the diameter of the reduced-diameter flow passage 13, the diameter of the gas inlet portion 12, and the diameter of the gas outlet portion 14 are equal to each other.
As shown in fig. 1, the first-stage flow passage includes a first expanded diameter portion 16 communicating with the gas inlet portion 12, the first expanded diameter portion 16 communicates with the first expanded diameter flow passage 11, the first expanded diameter flow passage 11 communicates with a first reduced diameter portion 17, and the first reduced diameter portion 17 communicates with the reduced diameter flow passage 13. The first diameter expanding part 16 and the first diameter reducing part 17 are both conical structures, the large opening ends of the first diameter expanding part and the first diameter reducing part are arranged oppositely, and the shape of the first-stage flow channel is approximate to a fusiform shape.
As shown in fig. 1, the second-stage flow passage has the same structure as the first-stage flow passage and is also approximately shuttle-shaped. The gas outlet device comprises a second diameter-expanding portion 15 communicated with the reduced-diameter flow passage 13, wherein the second diameter-expanding portion 15 is communicated with a second diameter-expanding flow passage 18, the second diameter-expanding flow passage 18 is communicated with a second reduced-diameter portion 19, and the second reduced-diameter portion 19 is communicated with the gas outlet portion 14.
As shown in fig. 1, the first stage flow channel and the second stage flow channel are both provided with ultrasonic sensors, and in the present embodiment, preferably, four pairs of ultrasonic sensors are provided, and two pairs of ultrasonic sensors are provided on the first stage flow channel and the second stage flow channel. For convenience of description, the present specification defines the ultrasonic sensors disposed on the first-stage flow channel as a first pair of ultrasonic sensors and a second pair of ultrasonic sensors, and defines the ultrasonic sensors disposed on the second-stage flow channel as a third pair of ultrasonic sensors and a fourth pair of ultrasonic sensors.
As shown in fig. 1, the first pair of ultrasonic sensors includes a first ultrasonic sensor 30a provided on the first diameter-enlarged portion 16 and a second ultrasonic sensor 30b provided on the first diameter-reduced portion 17, and the first ultrasonic sensor 30a and the second ultrasonic sensor 30b are provided to face each other. The second pair of ultrasonic sensors includes a third ultrasonic sensor 32a provided on the first diameter-reduced portion 17 and a fourth ultrasonic sensor 32b provided on the first diameter-enlarged portion 16, and the third ultrasonic sensor 32a and the fourth ultrasonic sensor 32b are provided so as to face each other. In the present embodiment, it is preferable that the first ultrasonic sensor 30a, the second ultrasonic sensor 30b, the third ultrasonic sensor 32a, and the fourth ultrasonic sensor 32b are located on the same plane, and the plane is an axial cross section of the first-stage flow channel, that is, the first ultrasonic sensor 30a and the second ultrasonic sensor 30b are diagonally disposed, and the third ultrasonic sensor 32a and the fourth ultrasonic sensor 32b are diagonally disposed. The first ultrasonic sensor 30a and the third ultrasonic sensor 32a are transmitting terminals, and the second ultrasonic sensor 30b and the fourth ultrasonic sensor 32b are receiving terminals.
As shown in fig. 1, the third pair of ultrasonic sensors includes a fifth ultrasonic sensor 34a provided on the second diameter-enlarged portion 15 and a sixth ultrasonic sensor 34b provided on the second diameter-reduced portion 19, and the fifth ultrasonic sensor 34a and the sixth ultrasonic sensor 34b are provided so as to face each other. The fourth pair of ultrasonic sensors includes a seventh ultrasonic sensor 36a provided on the second diameter-reduced portion 19 and an eighth ultrasonic sensor 36b provided on the second diameter-enlarged portion 15, and the seventh ultrasonic sensor 36a and the eighth ultrasonic sensor 36b are provided to face each other. In the present embodiment, it is preferable that the fifth ultrasonic sensor 34a, the sixth ultrasonic sensor 34b, the seventh ultrasonic sensor 36a, and the eighth ultrasonic sensor 36b are located on the same plane, and the plane is an axial cross section of the second-stage flow channel, that is, the fifth ultrasonic sensor 34a and the sixth ultrasonic sensor 34b are diagonally disposed, and the seventh ultrasonic sensor 36a and the eighth ultrasonic sensor 36b are diagonally disposed. The fifth ultrasonic sensor 34a and the seventh ultrasonic sensor 36a are transmitting terminals, and the sixth ultrasonic sensor 34b and the eighth ultrasonic sensor 36b are receiving terminals.
As shown in fig. 1 and 2, the gas inlet portion 12 is provided with a flow regulating member 20 inside. The rectifying member 20 includes a cylindrical housing 24, and a plurality of air flow passages 22 are arranged in the housing 24, and in the present embodiment, the air flow passages 22 preferably fill the entire inner cavity of the housing 24. In the present embodiment, each airflow passage 22 is preferably cylindrical, and more preferably each airflow passage 22 is cylindrical, and the axial direction of each airflow passage 22 coincides with the axial direction of the housing 24, that is, the axis of each airflow passage 22 is parallel to the axis of the housing 24. It should be noted that, the air flow passage 22 is a cylindrical shape, which is a preferable embodiment of the present embodiment, and in practical application, the air flow passage is not limited to a cylindrical shape, and a polygonal cylindrical shape, such as a square cylinder, a pentagonal cylinder, or a hexagonal cylinder, may also be an irregular cylindrical shape, and the present embodiment is not limited herein as long as the air flow passage can perform a rectification function.
The metering component for the multi-acoustic-path ultrasonic gas meter adopts two stages of flow channels, the gas flow is regulated by expanding, reducing and expanding, the flow speed is more stable, signals are collected at multiple points, the average value of the signals of each point is taken for metering, the metering is more accurate, the metering precision is higher, and the influence of abnormal signals on the metering result can be effectively avoided.
Example two:
a gas meter comprises a shell, wherein a metering component for a multi-sound-path ultrasonic gas meter is arranged in the shell.
The gas meter has high signal-to-noise ratio and high metering precision, can effectively avoid the influence of abnormal signals on the metering result, and has accurate metering data.
It should be noted that the names with sequence numbers (such as the first stage flow channel, the second stage flow channel, etc.) referred to in this specification are only for distinguishing technical features, and do not represent the positional relationship, the working sequence, etc. between the features.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. The metering component for the multi-sound-path ultrasonic gas meter comprises a gas flow passage (10), wherein one end of the gas flow passage (10) is provided with a gas inlet part (12), and the other end of the gas flow passage is provided with a gas outlet part (14); the gas flow passage (10) is characterized by comprising a first-stage flow passage and a second-stage flow passage which are sequentially arranged along the flowing direction of gas, wherein the first-stage flow passage is communicated with the second-stage flow passage through a reducing flow passage (13), and the sectional area of the reducing flow passage (13) is smaller than that of the first-stage flow passage and that of the second-stage flow passage; and the first-stage runner and the second-stage runner are both provided with ultrasonic sensors.
2. The metering member for the multi-acoustic-path ultrasonic gas meter according to claim 1, wherein the first-stage flow passage includes a first diameter-enlarged portion (16) communicating with the gas inlet portion (12), the first diameter-enlarged portion (16) communicates with a first diameter-enlarged flow passage (11), the first diameter-enlarged flow passage (11) communicates with a first diameter-reduced portion (17), and the first diameter-reduced portion (17) communicates with the diameter-reduced flow passage (13).
3. The metering member for the multi-acoustic-path ultrasonic gas meter according to claim 2, wherein the second-stage flow passage includes a second enlarged diameter portion (15) communicating with the reduced diameter flow passage (13), the second enlarged diameter portion (15) communicates with a second enlarged diameter flow passage (18), the second enlarged diameter flow passage (18) communicates with a second reduced diameter portion (19), and the second reduced diameter portion (19) communicates with the gas outlet portion (14).
4. The metering component for the multi-acoustic-path ultrasonic gas meter according to claim 3, wherein the first expanded diameter flow passage (11) and the second expanded diameter flow passage (18) have the same cross-sectional area; the cross-sectional area of the reducing flow channel (13) is equal to the cross-sectional areas of the gas inlet part (12) and the gas outlet part (14).
5. The metering component for the multi-sound-path ultrasonic gas meter according to claim 3, wherein the ultrasonic sensors are provided with four pairs, and two pairs are provided on each of the first-stage flow passage and the second-stage flow passage.
6. The meter section for a multi-acoustic-path ultrasonic gas meter according to claim 5, wherein the first pair of ultrasonic sensors includes a first ultrasonic sensor (30 a) and a second ultrasonic sensor (30 b) that are provided to face the first diameter-enlarged portion (16) and the first diameter-enlarged portion (17), the second pair of ultrasonic sensors includes a third ultrasonic sensor (32 a) and a fourth ultrasonic sensor (32 b) that are provided to face the first diameter-enlarged portion (17) and the first diameter-enlarged portion (16), the first ultrasonic sensor (30 a) and the third ultrasonic sensor (32 a) are transmitting ends, and the second ultrasonic sensor (30 b) and the fourth ultrasonic sensor (32 b) are receiving ends; the third pair of the ultrasonic sensors comprises a fifth ultrasonic sensor (34 a) and a sixth ultrasonic sensor (34 b) which are oppositely arranged on the second diameter-expanding part (15) and the second diameter-expanding part (19), the fourth pair of the ultrasonic sensors comprises a seventh ultrasonic sensor (36 a) and an eighth ultrasonic sensor (36 b) which are oppositely arranged on the second diameter-expanding part (19) and the second diameter-expanding part (15), the fifth ultrasonic sensor (34 a) and the seventh ultrasonic sensor (36 a) are transmitting ends, and the sixth ultrasonic sensor (34 b) and the eighth ultrasonic sensor (36 b) are receiving ends.
7. The metering component for the multi-sound-path ultrasonic gas meter according to claim 1, wherein the cross section of the gas flow passage (10) is circular.
8. The metering component for the multi-sound-path ultrasonic gas meter according to claim 7, wherein a rectifying component (20) is provided in the gas inlet portion (12).
9. The metering component for the multi-sound-path ultrasonic gas meter according to claim 8, wherein the rectifying component (20) comprises a cylindrical housing (24), a plurality of gas flow passages (22) are arranged in the housing (24), each gas flow passage (22) is cylindrical, and an axial direction of each gas flow passage (22) coincides with an axial direction of the housing (24).
10. The gas meter comprises a shell, and is characterized in that a metering component for the multi-sound-path ultrasonic gas meter according to any one of claims 1 to 9 is arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123152280.2U CN215573153U (en) | 2021-12-16 | 2021-12-16 | Measurement component for multi-sound-path ultrasonic gas meter and gas meter with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123152280.2U CN215573153U (en) | 2021-12-16 | 2021-12-16 | Measurement component for multi-sound-path ultrasonic gas meter and gas meter with same |
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| Publication Number | Publication Date |
|---|---|
| CN215573153U true CN215573153U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123152280.2U Active CN215573153U (en) | 2021-12-16 | 2021-12-16 | Measurement component for multi-sound-path ultrasonic gas meter and gas meter with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215573153U (en) |
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2021
- 2021-12-16 CN CN202123152280.2U patent/CN215573153U/en active Active
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