CN213812508U - Measuring device for accurately calibrating flow - Google Patents
Measuring device for accurately calibrating flow Download PDFInfo
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- CN213812508U CN213812508U CN202023268254.1U CN202023268254U CN213812508U CN 213812508 U CN213812508 U CN 213812508U CN 202023268254 U CN202023268254 U CN 202023268254U CN 213812508 U CN213812508 U CN 213812508U
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Abstract
A measuring device for accurately calibrating flow belongs to the technical field of flow measuring devices and comprises a flowmeter main body, a differential pressure gauge, a collecting card and an industrial personal computer; a high-pressure static pressure acquisition nozzle and a low-pressure static pressure acquisition nozzle are mounted on the pipe wall of the flowmeter main body; the high-pressure static pressure acquisition nozzle and the low-pressure static pressure acquisition nozzle are both communicated with an internal pipeline of the flowmeter main body; the high-pressure static pressure acquisition nozzle and the low-pressure static pressure acquisition nozzle are in signal connection with a differential pressure gauge; the differential pressure gauge is in signal connection with the acquisition card; the acquisition card is connected with an industrial personal computer through signals; and the industrial personal computer is in signal connection with the differential pressure gauge. The utility model provides a measuring device of accurate calibration flow, through on-line measurement and calibration flowmeter, has avoided the dismouting of flowmeter, and is easy and simple to handle, with low costs.
Description
Technical Field
The utility model belongs to the technical field of flow measuring device, concretely relates to measuring device of accurate calibration flow.
Background
The existing flow measuring device needs to be calibrated off-line or to a measuring unit, the flow meters of the same type or higher precision are used for calibration, a correction coefficient is searched, or the correction coefficient is updated in the meter, so that the flow is corrected.
In the traditional calibration method of the flow testing device, because the flowmeter is installed and used, the flowmeter needs to be detached before calibration, and then the flowmeter is installed back to the pipeline after calibration, so that the whole steps are too complicated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a measuring device of accurate calibration flow.
In order to achieve the above purpose, the present invention adopts the following technical solution.
A measuring device for accurately calibrating flow comprises a flowmeter main body, a differential pressure gauge, a collecting card and an industrial personal computer; a high-pressure static pressure acquisition nozzle and a low-pressure static pressure acquisition nozzle are mounted on the pipe wall of the flowmeter main body; the high-pressure static pressure acquisition nozzle and the low-pressure static pressure acquisition nozzle are both communicated with an internal pipeline of the flowmeter main body; the high-pressure static pressure acquisition nozzle and the low-pressure static pressure acquisition nozzle are in signal connection with a differential pressure gauge; the differential pressure gauge is in signal connection with the acquisition card; the acquisition card is connected with an industrial personal computer through signals; and the industrial personal computer is in signal connection with the differential pressure gauge.
The flowmeter main body comprises an air inlet pipe, a flow nozzle and an air outlet pipe; the medium in the flowmeter main body sequentially flows through the air inlet pipe, the flow nozzle and the air outlet pipe; the air inlet pipe and the air outlet pipe are respectively arranged at two sides of the flow nozzle and clamp the flow nozzle; the flow nozzle gradually reduces the radius inwards along the medium flow direction to form a horn-shaped inner wall.
The air inlet pipe is in threaded connection with the air outlet pipe; and the two sides of the flow nozzle respectively prop against the air inlet pipe and the air outlet pipe.
The high-pressure static pressure acquisition nozzle is arranged on the air inlet pipe; the low-pressure static pressure acquisition nozzle is arranged on the air outlet pipe.
The utility model provides a measuring device of accurate calibration flow, through on-line measurement and calibration flowmeter, has avoided the dismouting of flowmeter, and is easy and simple to handle, with low costs.
Drawings
Fig. 1 is an overall schematic view of the present invention;
in the figure, a flowmeter body 1, an air inlet pipe 1a, a flow nozzle 1b, an air outlet pipe 1c, a high-pressure static pressure acquisition nozzle 1d, a low-pressure static pressure acquisition nozzle 1e, a differential pressure gauge 2, an acquisition card 3 and an industrial personal computer 4 are arranged.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
A measuring device for accurately calibrating flow comprises a flowmeter main body 1, a differential pressure gauge 2, a collecting card 3 and an industrial personal computer 4.
The flowmeter main body 1 comprises an air inlet pipe 1a, a flow nozzle 1b and an air outlet pipe 1 c; the medium in the flowmeter main body 1 flows through an air inlet pipe 1a, a flow nozzle 1b and an air outlet pipe 1c in sequence; the air inlet pipe 1a and the air outlet pipe 1c are respectively arranged at two sides of the flow nozzle 1b and clamp the flow nozzle 1 b; the flow nozzle 1b is formed with a trumpet-shaped inner wall by gradually reducing the radius inward along the medium flow direction. Further, the air inlet pipe 1a and the air outlet pipe 1c are in threaded connection; and the two sides of the flow nozzle 1b respectively contact the air inlet pipe 1a and the air outlet pipe 1 c.
The air inlet pipe 1a is provided with a high-pressure static pressure acquisition nozzle 1 d; and the air outlet pipe 1c is provided with a low-pressure static pressure acquisition nozzle 1 e. The high-pressure static pressure acquisition nozzle 1d and the low-pressure static pressure acquisition nozzle 1e are both communicated with an internal pipeline of the flowmeter main body 1; the high-pressure static pressure acquisition nozzle 1d and the low-pressure static pressure acquisition nozzle 1e are both in signal connection with a differential pressure gauge 2; the differential pressure gauge 2 is in signal connection with the acquisition card 3; the acquisition card 3 is in signal connection with an industrial personal computer 4; and the industrial personal computer 4 is in signal connection with the differential pressure gauge 2.
A measuring device for accurately calibrating flow is suitable for measuring liquid media, and the working principle is as follows:
1. the flowmeter main part comprises intake pipe, nozzle, outlet duct, and high low pressure end static pressure is gathered around the nozzle, is gathered by the differential pressure gauge.
2. The differential pressure gauge collects 4-20mA signals and outputs the signals to the industrial personal computer through a collecting card.
3. And adjusting the signal collected by the differential pressure meter by the industrial personal computer according to the actual flow, and correspondingly outputting and displaying the calibrated flow value.
The industrial computer adjusts the differential pressure gauge to acquire signals, and for the prior art, for example, the industrial computer adopts RS485 to modify the circuit board parameters of the differential pressure gauge, and reference may be made to the Chinese patent document with application number 201910740175.9.
The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the scope of the claimed invention.
Claims (4)
1. A measuring device for accurately calibrating flow is characterized by comprising a flowmeter main body (1), a differential pressure gauge (2), an acquisition card (3) and an industrial personal computer (4); a high-pressure static pressure acquisition nozzle (1 d) and a low-pressure static pressure acquisition nozzle (1 e) are arranged on the pipe wall of the flowmeter main body (1); the high-pressure static pressure acquisition nozzle (1 d) and the low-pressure static pressure acquisition nozzle (1 e) are communicated with an internal pipeline of the flowmeter main body (1); the high-pressure static pressure acquisition nozzle (1 d) and the low-pressure static pressure acquisition nozzle (1 e) are in signal connection with a differential pressure gauge (2); the differential pressure meter (2) is in signal connection with the acquisition card (3); the acquisition card (3) is in signal connection with an industrial personal computer (4); and the industrial personal computer (4) is in signal connection with the differential pressure gauge (2).
2. The measuring device for accurately calibrating the flow according to claim 1, wherein the flowmeter body (1) comprises an air inlet pipe (1 a), a flow nozzle (1 b) and an air outlet pipe (1 c); the medium in the flowmeter main body (1) flows through an air inlet pipe (1 a), a flow nozzle (1 b) and an air outlet pipe (1 c) in sequence; the air inlet pipe (1 a) and the air outlet pipe (1 c) are respectively arranged at two sides of the flow nozzle (1 b) and clamp the flow nozzle (1 b); the flow nozzle (1 b) gradually reduces the radius inwards along the medium flow direction to form a horn-shaped inner wall.
3. A measuring device for precise calibration of flow according to claim 2, characterized in that the inlet pipe (1 a) and the outlet pipe (1 c) are connected by screw thread; and the two sides of the flow nozzle (1 b) respectively contact the air inlet pipe (1 a) and the air outlet pipe (1 c).
4. A measuring device for precise calibration of flow rate according to claim 2, characterized in that the high-pressure static-pressure collection nozzle (1 d) is mounted on the air inlet pipe (1 a); the low-pressure static pressure acquisition nozzle (1 e) is arranged on the air outlet pipe (1 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023268254.1U CN213812508U (en) | 2020-12-30 | 2020-12-30 | Measuring device for accurately calibrating flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023268254.1U CN213812508U (en) | 2020-12-30 | 2020-12-30 | Measuring device for accurately calibrating flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213812508U true CN213812508U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023268254.1U Active CN213812508U (en) | 2020-12-30 | 2020-12-30 | Measuring device for accurately calibrating flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213812508U (en) |
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2020
- 2020-12-30 CN CN202023268254.1U patent/CN213812508U/en active Active
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