CN217278432U - Novel back type speed measuring tube - Google Patents
Novel back type speed measuring tube Download PDFInfo
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- CN217278432U CN217278432U CN202123246801.0U CN202123246801U CN217278432U CN 217278432 U CN217278432 U CN 217278432U CN 202123246801 U CN202123246801 U CN 202123246801U CN 217278432 U CN217278432 U CN 217278432U
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- back pressure
- sleeve
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- 239000000523 sample Substances 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 5
- 238000012360 testing method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
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Abstract
The utility model discloses a novel back-to-back type speed measuring tube, which mainly adopts the technical proposal that a speed measuring probe comprises a pressure-facing hole and a back pressure hole which are connected together back to back, wherein the pressure-facing surface of the pressure-facing hole and the back pressure surface of the back pressure hole are inclined surfaces; the outlet pipe comprises a pressure-facing outlet pipe connected with the pressure-facing hole and a back pressure outlet pipe connected with the back pressure hole, the included angle between the pressure-facing surface of the pressure-facing hole and the pressure-facing outlet pipe is 15-50 degrees, and the included angle between the back pressure surface of the back pressure hole and the back pressure outlet pipe is 15-50 degrees; the sleeve is sleeved outside the eduction tube; the outlet port comprises a pressure-facing outlet port connected with the pressure-facing outlet pipe and a back pressure outlet port connected with the back pressure outlet pipe; and the vibration ash blocking prevention device is arranged in the sleeve and is positioned above the pressure-facing eduction tube and the back pressure eduction tube.
Description
Technical Field
The utility model relates to a tub technical field tests the speed, especially relates to a novel back formula pipe that tests the speed.
Background
The wind speed is one of the most basic and key measuring objects in the performance test and daily monitoring of a coal-fired power plant pulverizing system, a BS-I type back-to-back speed measurement probe (15 degrees) is a wind speed measuring device recommended by the power industry standard for directly measuring the air flow speed in an air powder pipeline, as shown in figure 1, the correction of the mass concentration of pulverized coal is not needed during measurement, powder accumulation is not easy, but the sensitivity of the BS-I type back-to-back speed measurement probe (15 degrees) to the air flow is not high, the windward area of the BS-I type back-to-back speed measurement probe is large, and the change of the air flow direction cannot be sensitively sensed, so that the accuracy of wind speed measurement is not high.
Disclosure of Invention
In view of this, the utility model provides a novel back formula is tested the speed and is managed, main aim at effectively solve the back formula and test the speed coefficient of pipe to the velocity of flow, test the speed the pipe and place the condition insensitivity such as gesture and intraductal long-pending powder and measure the problem that small local area's detailed flow distributes.
In order to achieve the above object, the present invention mainly provides the following technical solutions:
an embodiment of the utility model provides a novel back formula speed tube. It includes:
the speed measuring probe comprises a pressure facing hole and a back pressure hole which are connected together back to back, and the pressure facing surface of the pressure facing hole and the back pressure surface of the back pressure hole are both inclined surfaces;
the outlet pipe comprises a pressure-facing outlet pipe connected with the pressure-facing hole and a backpressure outlet pipe connected with the backpressure hole, the included angle between the pressure-facing surface of the pressure-facing hole and the pressure-facing outlet pipe is 15-50 degrees, and the included angle between the backpressure surface of the backpressure hole and the backpressure outlet pipe is 15-50 degrees;
the sleeve is sleeved outside the eduction tube;
an outlet port comprising a pressure-facing outlet port connected with the pressure-facing outlet pipe and a back pressure outlet port connected with the back pressure outlet pipe;
and the vibration ash blocking prevention device is arranged in the sleeve and is positioned above the pressure-facing eduction tube and the back pressure eduction tube.
As mentioned above, preferably, the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 30-50 °, and the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 30-50 °.
As mentioned above, most preferably, the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 45 °, and the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 45 °.
As previously mentioned, the sleeve is a metal sleeve.
As mentioned above, the vibration ash blocking prevention device is a small vibration rod, one end of the small vibration rod is arranged in the sleeve, and the other end of the small vibration rod is arranged outside the sleeve.
As mentioned above, the vibration ash blocking prevention device is a vibration ball.
Borrow by above-mentioned technical scheme, the utility model (name) has following advantage at least:
1. the novel back type speed measuring tube of the utility model is provided with the pressure facing surface of the pressure facing hole and the back pressure surface of the back pressure hole which are both inclined planes, the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 15-50 degrees, the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 15-50 degrees, the windward area of the back type speed measuring tube sensitive to air flow is smaller than that of a BS-I type back type speed measuring probe (15 degrees), and the change of air flow direction can be sensed, thereby the utility model has high sensitivity and measuring precision, effectively solves the problems that the speed coefficient of the back type speed measuring tube is insensitive to the conditions of flow velocity, the placing posture of the speed measuring tube, powder accumulation in the tube and the like and the detailed flow distribution of tiny local areas is measured, and is arranged in the sleeve and positioned above the pressure facing eduction tube and the back pressure eduction tube by arranging a vibration ash device, the vibration ash blocking prevention device in the sleeve swings along with the flowing of the airflow, and plays a role of vibrating the pipe wall, so that the accumulated ash in the sleeve timely falls off and is not easy to accumulate.
2. The utility model discloses a novel back formula is tested the speed and is managed the tuber pipe that can adapt to different pipe diameters, has alleviateed work load at scene level greatly, safe and reliable, convenient to use, effectual is the innovation on the back is tested the speed and is managed.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a prior art BS-I type tachometer tube;
fig. 2 is a schematic structural view of the novel back-to-back type speed measuring tube in the embodiment of the present invention;
fig. 3 is a scale factor graph of the rotation of the novel back-to-back speed measurement tube in the clockwise direction and the counterclockwise direction according to the embodiment of the present invention;
FIG. 4 is a prior art graph of the proportionality coefficient of clockwise rotation and counterclockwise rotation of a BS-I type tachometer test probe.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, an embodiment of the present invention provides a novel back-to-back speed measurement tube, which includes: the device comprises a test probe 1, an eduction tube 2, a sleeve 3, an eduction port 4 and a vibration ash blockage preventing device 5.
The speed measuring probe 1 comprises a pressure facing hole 11 and a back pressure hole 12 which are connected back to back, and both a pressure facing surface 111 of the pressure facing hole 11 and a back pressure surface 121 of the back pressure hole 12 are inclined surfaces. The eduction tube 2 comprises a pressure-facing eduction tube 21 connected with the pressure-facing hole 11 and a back pressure eduction tube 22 connected with the back pressure hole 12, the included angle between the pressure-facing surface 111 of the pressure-facing hole 11 and the pressure-facing eduction tube 21 is 15-50 degrees, and the included angle between the back pressure surface 121 of the back pressure hole 12 and the back pressure eduction tube 22 is 15-50 degrees; preferably, the included angle between the pressure facing surface 111 of the pressure facing hole 11 and the pressure facing eduction tube 21 is 30-50 °, the included angle between the back pressure surface 121 of the back pressure hole 12 and the back pressure eduction tube 22 is 30-50 °, most preferably, the included angle between the pressure facing surface 111 of the pressure facing hole 11 and the pressure facing eduction tube 21 is 45 °, and the included angle between the back pressure surface 121 of the back pressure hole 12 and the back pressure eduction tube 22 is 45 °. The sleeve 3 is sleeved outside the eduction tube 2, the sleeve 3 is a metal sleeve, and the eduction port 4 comprises a pressure-facing eduction port 41 connected with the pressure-facing eduction tube 21 and a back pressure eduction port 42 connected with the back pressure eduction tube 22. When specifically using, the utility model discloses a novel back formula is tested the speed and is pressed drawing port and backpressure of pipe and draw the port to link to each other with differential pressure transmitter respectively to record and meet the average amount of wind on pressure face and the backpressure face. The vibration anti-blocking device 5 is arranged in the sleeve 3 and located above the head-on pressure eduction tube 21 and the back pressure eduction tube 22, the vibration anti-blocking device 5 can be a vibration small rod, when the vibration anti-blocking device 5 is the vibration small rod, one end of the vibration small rod is arranged in the sleeve 3, and the other end of the vibration small rod is arranged outside the sleeve 3. Stifled grey device 5 can also be for vibrating the bobble in the vibration, works the utility model discloses a novel back formula speed measurement pipe during operation, intraductal vibration of cover prevents stifled grey device 5 and produces the swing along with the flow of air current, plays vibration casing pipe wall effect to, make intraductal deposition of cover in time drop, be difficult for the deposition.
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description is combined with the present invention, and the relationship between the proportionality coefficient and the angle between the rotation in the clockwise direction and the rotation in the counterclockwise direction is right for the present invention.
As shown in table 1, it is that the utility model discloses a novel back formula is tested the speed and is managed angle theta that rotates 0-80 according to clockwise and rotates 0-80 angle theta proportionality coefficient K data according to the counter-clockwise, according to proportionality coefficient K data and the drawing of pivoted angle theta relation obtain figure 3 the utility model discloses a novel back formula is tested the speed and is managed the proportionality coefficient graph line that rotates according to the counter-clockwise according to the clockwise.
TABLE 1
| θ | -80 | -70 | -60 | -50 | -40 | -30 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
| κ | 0.1 | 0.18 | 0.01 | 0.38 | 0.75 | 1.0 | 1.12 | 1.02 | 0.99 | 1.04 | 1.13 | 1.06 | 0.77 | 0.4 | 0.02 | 0.18 | 0.12 |
TABLE 2
| α | -80 | -70 | -60 | -50 | -40 | -30 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
| b | 1.71 | 1.27 | 1.15 | 0.91 | 0.81 | 0.79 | 0.78 | 0.75 | 0.69 | 0.72 | 0.74 | 0.75 | 0.77 | 0.88 | 1.09 | 1.49 | 1.66 |
As shown in table 2, the prior art BS-I type back-to-back speed measurement probe (15 °) rotates by an angle α of 0 ° to 80 ° in the clockwise direction and an angle α proportionality coefficient b data of 0 ° to 80 ° in the counterclockwise direction, and a proportionality coefficient graph of clockwise rotation and counterclockwise rotation of the prior art BS-I type back-to-back speed measurement probe (15 °) of fig. 4 is obtained by plotting according to the proportionality coefficient b data and the rotation angle α.
According to figure 3 and figure 4 can obtain, the utility model discloses a novel back formula is tested the speed and is managed according to clockwise rotation and the symmetry of the proportionality coefficient graph line that rotates according to counter-clockwise than prior art's BS-I type back formula test the speed probe (15) better, and the data accuracy degree that obtains in specific measurement process is higher, and the error is littleer, and numerical value volatility is also less to more can be accurate record numerical value.
The novel back type speed measuring tube of the utility model is provided with the pressure facing surface of the pressure facing hole and the back pressure surface of the back pressure hole which are both inclined planes, the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 15-50 degrees, the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 15-50 degrees, the windward area of the back type speed measuring tube sensitive to air flow is smaller than that of a BS-I type back type speed measuring probe (15 degrees), and the change of air flow direction can be sensed, thereby the utility model has high sensitivity and measuring precision, effectively solves the problems that the speed coefficient of the back type speed measuring tube is insensitive to the conditions of flow velocity, the placing posture of the speed measuring tube, powder accumulation in the tube and the like and the detailed flow distribution of tiny local areas is measured, and is arranged in the sleeve and positioned above the pressure facing eduction tube and the back pressure eduction tube by arranging a vibration ash device, the vibration ash blocking prevention device in the sleeve swings along with the flowing of the airflow, and plays a role of vibrating the pipe wall, so that the accumulated ash in the sleeve timely falls off and is not easy to accumulate. The utility model discloses a novel back formula is tested the speed and is managed the tuber pipe that can adapt to different pipe diameters, has alleviateed work load at scene level greatly, safe and reliable, convenient to use, effectual is the innovation on the back is tested the speed and is managed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a novel back formula speed measurement pipe which characterized in that: it comprises the following steps:
the speed measuring probe comprises a pressure facing hole and a back pressure hole which are connected together back to back, and the pressure facing surface of the pressure facing hole and the back pressure surface of the back pressure hole are both inclined surfaces;
the extraction pipe comprises a pressure-facing extraction pipe connected with the pressure-facing hole and a backpressure extraction pipe connected with the backpressure hole, the included angle between the pressure-facing surface of the pressure-facing hole and the pressure-facing extraction pipe is 15-50 degrees, and the included angle between the backpressure surface of the backpressure hole and the backpressure extraction pipe is 15-50 degrees;
the sleeve is sleeved outside the eduction tube;
an outlet port comprising a pressure-facing outlet port connected with the pressure-facing outlet pipe and a back pressure outlet port connected with the back pressure outlet pipe;
and the vibration ash blocking prevention device is arranged in the sleeve and is positioned above the pressure-facing eduction tube and the back pressure eduction tube.
2. The novel back-to-back type speed measuring tube according to claim 1,
the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 30-50 degrees, and the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 30-50 degrees.
3. The novel back-to-back type speed measuring tube according to claim 2,
the included angle between the pressure facing surface of the pressure facing hole and the pressure facing eduction tube is 45 degrees, and the included angle between the back pressure surface of the back pressure hole and the back pressure eduction tube is 45 degrees.
4. The novel back-to-back type speed measuring tube according to claim 1,
the sleeve is a metal sleeve.
5. The novel back-to-back type speed measuring tube according to claim 1,
the vibration ash blocking prevention device is a small vibration rod, one end of the small vibration rod is arranged in the sleeve, and the other end of the small vibration rod is arranged outside the sleeve.
6. The novel back-to-back type speed measuring tube according to claim 1,
the vibration ash blocking prevention device is a vibration ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246801.0U CN217278432U (en) | 2021-12-22 | 2021-12-22 | Novel back type speed measuring tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246801.0U CN217278432U (en) | 2021-12-22 | 2021-12-22 | Novel back type speed measuring tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217278432U true CN217278432U (en) | 2022-08-23 |
Family
ID=82889092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123246801.0U Expired - Fee Related CN217278432U (en) | 2021-12-22 | 2021-12-22 | Novel back type speed measuring tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217278432U (en) |
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2021
- 2021-12-22 CN CN202123246801.0U patent/CN217278432U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220823 |