CN212060312U - Ash removal type pitot tube wind speed detection equipment - Google Patents
Ash removal type pitot tube wind speed detection equipment Download PDFInfo
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- CN212060312U CN212060312U CN202021109076.5U CN202021109076U CN212060312U CN 212060312 U CN212060312 U CN 212060312U CN 202021109076 U CN202021109076 U CN 202021109076U CN 212060312 U CN212060312 U CN 212060312U
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- pitot tube
- differential pressure
- wind speed
- pressure transmitter
- speed detection
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Abstract
The ash removal type pitot tube wind speed detection equipment belongs to the technical field of wind speed detection, and comprises a pitot tube and a micro differential pressure transmitter, wherein two ends of the micro differential pressure transmitter are connected to a pitot tube probe through a gas tube; and four electromagnetic valves are used for opening and closing two closed loops, so that online detection is realized respectively, and the compressed gas is controlled to regularly sweep the pitot tube to avoid the accumulation of dust on the pitot tube.
Description
Technical Field
The utility model belongs to a wind speed detection technical field especially indicates an ash removal type pitot tube wind speed check out test set.
Background
The traditional pitot tube wind speed detection device is composed of a pitot tube (1) and a micro differential pressure transmitter (2), referring to the attached drawing 1, after the pitot tube is arranged in an air pipe and fixedly installed, the pitot tube is connected to the micro differential pressure transmitter through a PU pipe, the pitot tube is used for detecting differential pressure, and the differential pressure is converted into wind speed through the micro differential pressure transmitter. The defect that dust is easily accumulated on the pitot tube in the using process, so that a detection port is blocked, and the detection result is influenced.
Disclosure of Invention
The utility model discloses just in order to overcome above-mentioned not enough, provide an deashing type pitot tube wind speed check out test set, adopt solenoid valve circuit control compressed gas to regularly sweep the pitot tube, avoid the piling up of dust on the pitot tube. The method is implemented as follows: the ash removal type pitot tube wind speed detection device comprises a pitot tube and a micro differential pressure transmitter, wherein both ends of the micro differential pressure transmitter are connected to a pitot tube probe through a gas tube, and the pitot tube probe, the gas tube and the micro differential pressure transmitter form a first closed loop.
After the pitot tube is fixedly arranged in the air pipe, the air pipe is connected to a pressure measuring port of the micro-differential pressure transmitter to detect differential pressure and convert the differential pressure into air speed to transmit signals. In the use process, the two electromagnetic valves forming a first closed loop with the micro differential pressure transmitter are normally opened, and normal online detection is kept. And two electromagnetic valves in the compressed gas closed loop II can be used for sweeping the pitot tube probe at regular time so as to ensure that the surface of the probe is smooth and has no dust accumulation. And in the purging process, firstly closing the two electromagnetic valves forming the first closed loop with the micro differential pressure transmitter, then opening the two electromagnetic valves in the second compressed gas closed loop, closing the two electromagnetic valves after the purging time is finished, then opening the two electromagnetic valves forming the first closed loop with the micro differential pressure transmitter, and continuously carrying out online detection.
The compressed air or inert gas can be selected according to the medium to be treated, and for some media which can not use the compressed air, the inert gas is used so as to avoid secondary pollution to the product.
The trachea of the utility model is a PU tube.
The utility model discloses an add one and the parallelly connected compressed gas closed circuit of differential pressure transmitter a little, open and close two closed circuits with four solenoid valves, realize respectively with the gaseous velocity of flow that differential pressure transmitter comes to pitot tube air velocity transducer's conduction, flow, gaseous differential pressure on-line measuring to and sweep regularly to the pitot tube with control compressed gas and avoid the accumulation of dust on the pitot tube.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
Ash cleaning type pitot tube wind speed detection equipment, including pitot tube 1, little differential pressure transmitter 2 both ends are connected to pitot tube 1 probe by the PU pipe, pitot tube 1 probe, PU pipe and little differential pressure transmitter 2 constitute closed circuit one, a PU pipe that leads to compressed air source is connected in parallel with little differential pressure transmitter 2, and constitute closed circuit two with pitot tube 1 probe, be equipped with solenoid valve 3, solenoid valve 5 on two parallel connection points and the connecting PU pipe of little differential pressure transmitter 2 respectively, be close to parallel connection point and with little differential pressure transmitter 2 parallelly connected compressed gas's PU pipe both ends are provided with solenoid valve 4, solenoid valve 6 respectively. During normal detection, the electromagnetic valve 3 and the electromagnetic valve 5 are normally opened, and the electromagnetic valve 4 and the electromagnetic valve 6 are used for purging the pitot tube probe regularly. In the purging process, the electromagnetic valve 3 and the electromagnetic valve 5 are closed firstly, then the electromagnetic valve 4 and the electromagnetic valve 6 are opened, after the purging time is finished, the electromagnetic valve 4 and the electromagnetic valve 6 are closed, and then the electromagnetic valve 3 and the electromagnetic valve 5 are opened for continuous detection.
Claims (2)
1. The ash removal type pitot tube wind speed detection device comprises a pitot tube and a micro differential pressure transmitter, wherein both ends of the micro differential pressure transmitter are connected to a pitot tube probe through a gas tube, and the pitot tube probe, the gas tube and the micro differential pressure transmitter form a first closed loop.
2. The ash removal type pitot tube wind speed detection device as claimed in claim 1, wherein the air pipe is a PU pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021109076.5U CN212060312U (en) | 2020-06-16 | 2020-06-16 | Ash removal type pitot tube wind speed detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021109076.5U CN212060312U (en) | 2020-06-16 | 2020-06-16 | Ash removal type pitot tube wind speed detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212060312U true CN212060312U (en) | 2020-12-01 |
Family
ID=73513486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021109076.5U Active CN212060312U (en) | 2020-06-16 | 2020-06-16 | Ash removal type pitot tube wind speed detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212060312U (en) |
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2020
- 2020-06-16 CN CN202021109076.5U patent/CN212060312U/en active Active
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