CN2603384Y - Measurer for dynamic pressure of deep water - Google Patents
Measurer for dynamic pressure of deep water Download PDFInfo
- Publication number
- CN2603384Y CN2603384Y CN 02295450 CN02295450U CN2603384Y CN 2603384 Y CN2603384 Y CN 2603384Y CN 02295450 CN02295450 CN 02295450 CN 02295450 U CN02295450 U CN 02295450U CN 2603384 Y CN2603384 Y CN 2603384Y
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- CN
- China
- Prior art keywords
- dynamic pressure
- gas
- pressure
- deep water
- cavity
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- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a deepwater dynamic pressure measuring device and is characterized in that, this device comprises: a gas-liquid cavity whose bottom is provided with a permeable plate with a permeability of: 0.1*10<-6>-0.5*10<-6>cm<2>; and a dynamic pressure sensor installed on the gas cavity wall of the gas-liquid cavity. The dynamic pressure sensor is provided with a hole that is communicated with the gas cavity and the sensitive part is positioned outside the gas-liquid cavity. This method and device have realized the direct measurement of dynamic pressure and enabled the measuring precision of dynamic pressure greatly improved.
Description
Technical field
The utility model relates to a kind of measurement mechanism of deep-water pressure, particularly a kind of measurement mechanism of deep water dynamic pressure.
Background technology
The measurement mechanism of the deep-water pressure that extensively adopts mainly adopts two kinds at present: a kind of is the pressure transducer that utilizes ventilation cable and atmosphere conducting, records the differential pressure value between measured position and the atmospheric pressure; A kind of is the pressure transducer of encapsulation one standard atmospheric pressure in utilizing, and records the differential pressure value between measured position and the encapsulation atmospheric pressure.These two kinds of devices can obtain more satisfactory result when measuring in the shoal water zone, but measure deep-water pressure and will have many deficiencies, what do not detect actual needs is in deep water water level works surface dynamic pressure, because because the static pressure influence is bigger, range relatively just needs big especially, for example: measure the pressure that static pressure is about 10 atmospheric 100 meters deep water, range is set to 10 more than the atmospheric pressure, the precision of pressure transducer is the 0.2-0.5% of whole range, be 0.02-0.05 atmospheric pressure, like this, the dynamic pressure value generally all is in the error range, even can not obtain desirable dynamic pressure by measurement result calculating, simultaneously can not fine reflection static pressure value.
Summary of the invention
The purpose of this utility model is: overcome existing pressure sensor apparatus can only record quiet dynamic pressure and, can not directly measure the defective of dynamic pressure, thereby a kind of measurement mechanism of deep water dynamic pressure is provided.
The purpose of this utility model is achieved in that the measurement mechanism of the deep water dynamic pressure that the utility model provides, and as shown in Figure 1, it is characterized in that, this device comprises that it is 0.1 * 10 that permeability is installed in a bottom
-6-0.5 * 10
-6Cm
2The gas-liquid cavity of infiltration plate and be loaded on dynamic pressure sensor on the air cavity wall of this gas-liquid cavity; Described dynamic pressure sensor has the hole that is communicated with air cavity, and its responsive part is positioned at outside the gas-liquid cavity.
Advantage of the present utility model is: the measurement mechanism of the utility model deep water dynamic pressure, realized the direct measurement of dynamic pressure; The precision that makes dynamic pressure measure increases substantially.
Description of drawings
Fig. 1 is the measurement mechanism synoptic diagram of the utility model deep water dynamic pressure
Fig. 2 is the test unit figure of the measurement mechanism embodiment 2 of the utility model deep water dynamic pressure
Accompanying drawing indicates:
2, dynamic pressure sensing 3, permeable window
4, gas-liquid cavity 5, air hole 6, airtight container
7, vent hole 8, tensimeter 9, solenoid valve
10, measurement mechanism
Embodiment
Embodiment 1
Make the measurement mechanism of the utility model deep water dynamic pressure.As shown in Figure 1, this device comprises a gas-liquid cavity 4 and is loaded on a dynamic pressure sensor 2 on the air cavity wall of this gas-liquid cavity 4, this dynamic pressure sensor has the air hole 5 that is communicated with air cavity, its responsive part is positioned at gas-liquid cavity 4 outer tested deep water places, and the infiltration plate 3 of a liquid permeable is installed in gas-liquid cavity 4 bottoms.
Dynamic pressure sensor 2 adopts commercially available mechanical strain formula pressure transducer AK-1c in the present embodiment, and range is the 0.1MPa sensor, makes a square shell with iron plate, and the volume in its gas-liquid chamber is 4 * 4 * 3cm
3, it is that φ=0.2, permeability are K=0.225 * 10 that infiltration plate 3 has adopted factor of porosity
6Cm
2, radius is the infiltration stone of d=1cm; As shown in Figure 2, the output of the cable seal of dynamic pressure sensor 2, air hole 5 is communicated with air cavity, and the diaphragm outside of dynamic pressure sensor 2 is placed in the water.
Embodiment 2
Utilize the measurement mechanism 10 of the utility model embodiment 1 to carry out the dynamic pressure measurement.As shown in Figure 3, above-mentioned measurement mechanism shown in Figure 1 10 is put into an airtight container 6, earlier vent hole 7 is opened, close solenoid valve 9 and seal vent hole 7 after piling water; Open solenoid valve 9 again and discharge water, when tensimeter 8 shows that pressure reaches 0.25MPa and closes solenoid valve 9.
Permeability hole make the pressure of gas in the gas-liquid cavity in a period of time with the static pressure value balance of measured position; The pressure of measured position liquid is experienced in the outside of dynamic pressure sensor 2, another side is experienced the pressure of gas in the gas-liquid cavity 4, static pressure partly reaches self-adaptation, thereby make 2 of dynamic pressure sensors experience the dynamic pressure part, the range setting need only be satisfied the smaller value range of dynamic pressure measurement requirement, and measuring accuracy is greatly improved.
The same day, tap water pressure was about 3 atmospheric pressure (atmospheric pressure is about 10 meters depth of waters), and external atmospheric pressure is 0.1086MPa during experiment, closed solenoid valve 9 samplings in back 5 minutes, and dynamic pressure is approximately 0; Stop immediately after opening solenoid valve 9, tensimeter 8 shows that pressure is about 0.28MPa, measures sampled result preceding 5 seconds in this process, and the dynamic pressure measurement result is as shown in table 1: table 1
| Sampling time (s) | Dynamic pressure (MPa) |
| 0 | 0.00003 |
| 0.3 | 0.01724 |
| 0.7 | 0.02615 |
| 0.9 | 0.02838 |
| 1 | 0.02998 |
| 2 | 0.02998 |
| 3 | 0.02998 |
| 4 | 0.02997 |
| 5 | 0.02997 |
As shown in Table 1, open solenoid valve after the water filling dynamic pressure rise to 0.02997MPa very soon, more identical with actual result, shown that the dynamic pressure that adopts this measurement mechanism to measure deep water is rationally feasible.
Claims (1)
1, a kind of measurement mechanism of deep water dynamic pressure is characterized in that, this device comprises that it is 0.1 * 10 that permeability is installed in a bottom
-6-0.5 * 10
-6Cm
2The gas-liquid cavity of infiltration plate and be loaded on dynamic pressure sensor on the air cavity wall of this gas-liquid cavity; Described dynamic pressure sensor has the hole that is communicated with air cavity, and its responsive part is positioned at outside the gas-liquid cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295450 CN2603384Y (en) | 2002-12-31 | 2002-12-31 | Measurer for dynamic pressure of deep water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295450 CN2603384Y (en) | 2002-12-31 | 2002-12-31 | Measurer for dynamic pressure of deep water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2603384Y true CN2603384Y (en) | 2004-02-11 |
Family
ID=34152154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295450 Expired - Fee Related CN2603384Y (en) | 2002-12-31 | 2002-12-31 | Measurer for dynamic pressure of deep water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2603384Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553708A (en) * | 2015-09-25 | 2017-04-05 | 通用汽车环球科技运作有限责任公司 | Active pneumatic system the method for verifying vehicle launch force evaluating are diagnosed using pressure transducer |
-
2002
- 2002-12-31 CN CN 02295450 patent/CN2603384Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553708A (en) * | 2015-09-25 | 2017-04-05 | 通用汽车环球科技运作有限责任公司 | Active pneumatic system the method for verifying vehicle launch force evaluating are diagnosed using pressure transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |