CN2651716Y - Sleeving average dynamic pressure measuring apparatus - Google Patents
Sleeving average dynamic pressure measuring apparatus Download PDFInfo
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- CN2651716Y CN2651716Y CN 03249004 CN03249004U CN2651716Y CN 2651716 Y CN2651716 Y CN 2651716Y CN 03249004 CN03249004 CN 03249004 CN 03249004 U CN03249004 U CN 03249004U CN 2651716 Y CN2651716 Y CN 2651716Y
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- 230000003068 static effect Effects 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000009530 blood pressure measurement Methods 0.000 claims description 50
- 238000005259 measurement Methods 0.000 claims description 43
- 238000005452 bending Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Abstract
A sleeve type average dynamic pressure measuring device for measuring the average dynamic pressure of flowing fluid in pipeline is provided, which comprises a static pressure measuring section and a full pressure measuring section. The static pressure measuring section is configured as a single core bend pipe with smaller size and is positioned inside a pipe of the full pressure measuring section; the static pressure section is composed of a connected first section pipe and a second section pipe; wherein, the first section pipe is arranged in parallel with the flowing direction of fluid; the second section pipe is not arranged in parallel with the flowing direction of fluid. Wherein, the first section pipe in the static pressure measuring section extends to the outside of the full pressure measuring section and is provided with a static pressure measuring hole; a static pressure measuring head is positioned at one end of the second section pipe in the static pressure measuring section; the full pressure measuring section is configured with a single core pipe with larger size; a plurality of full pressure measuring holes are arranged on the wall surface of the full pressure measuring section; an average full pressure measuring head is positioned at one end of the full pressure measuring section and is communicated with the full pressure measuring hole. Then the average dynamic pressure can be worked out according to the difference between the full pressure measured by the average full pressure measuring head and the static pressure measured by the static pressure measuring head. The full pressure measuring hole in the full pressure measuring section is positioned with the principle of equal area concentric circle.
Description
Technical field
The utility model relates to a kind of average dynamic pressure measurement device of bushing type that is used to measure dynamic pressure in the pipeline.
Background technology
When pipeline gas inside flows such as measurement gas exhaust piping or air-conditioning air-supply pipeline, can adopt two kinds of ways: first kind is direct measurement gas flow velocity; Second kind is after the gas dynamic pressure in measuring pipeline, is converted into gas flow rate.Obtain after the flow velocity, calculate according to caliber again and obtain gas flow.Generally speaking, measure dynamic pressure than the measurement gas flow speed stability, and the numerical value of being tried to achieve is comparatively accurate, so more often adopt.
Traditional dynamic pressure measurement device generally uses pitot tube (Pitot Tube, or title Pi Shi pipe), obtains dynamic pressure by the difference of measuring total head and static pressure, shown in Fig. 1 a and Fig. 1 b, and an embodiment of traditional pitot tube 10.As shown in Figure 1a, pitot tube 10 is a twin-core formula bend pipe, has a total head measured hole 11, and this can press measured hole 11 to be connected to interior pipe 12; Have a plurality of static boles 13 in the tube wall side, shown in Fig. 1 b, become eight static boles 13 of symmetry to be connected in outer tube 14 along circumference.Outer tube 14 is communicated to static pressure measurement head 15, and interior pipe 12 is communicated to total head measuring head 16, obtains dynamic pressure by the difference of total head and static pressure.
Generally speaking, the flow field of gas is not fully evenly to distribute in the pipeline, therefore must measure the force value that difference is counted according to the caliber size, tries to achieve its mean value, so that the dynamic pressure measurement result is comparatively accurate.Usually the pipeline caliber is big more, and counting of required measurement is many more, for accurately trying to achieve the dynamic pressure value, and usually must be more than 4 o'clock.
For example, on same cross section when if desire is measured multiple spot and tried to achieve mean pressure, can decide suitable measuring position according to the concentrically ringed principle of homalographic, as shown in Figure 2, the area of a circle 201 all equates with annulus area 201-202,202-203,203-204 and 204-205, and five groups of total head measurement points 210,220,230,240 and 250 of symmetry are positioned at the concentrically ringed center of homalographic, have 10 total head measurement points.
Therefore yet above-mentioned traditional pitot tube 10 only has single total head measured hole 11 and four to eight static boles 13, the once only total head and the static pressure of single-measurement point in the energy measurement pipeline; But because of measurement point generally is 4 points at least, 10 several points at most, therefore the work of measuring is very wasted time and energy, and can't carry out test constantly automatically.Simultaneously, the synthetic twin-core pipe of pipe 12 and outer tube 14 in existing pitot tube 10 is served as reasons, difficulty comparatively on making, the cost costliness, tens thousand of at least units, surplus in the of ten ten thousand, non-common people can buy use easily at most.
Summary of the invention
In view of this, the purpose of this utility model is to propose a kind ofly can measure a plurality of measurement points simultaneously, and is all the average dynamic pressure measurement device of bushing type of single measuring tube.
The average dynamic pressure measurement device of bushing type in the utility model is used to measure the average dynamic pressure of streaming flow in the pipeline, the average dynamic pressure measurement device of this bushing type includes static pressure measurement portion and total head measurement section, static pressure measurement portion is a undersized relatively single core bend pipe, be arranged in the total head measurement section, be used to measure the static pressure of pipeline, static pressure measurement portion comprises first section pipe portion and the second section pipe portion that is connected, first section pipe portion is parallel with the flow direction of fluid, and second section flow direction with fluid is not parallel, wherein first of static pressure measurement portion section pipe portion extends to outside the total head measurement section, and have a static bole, an end of second section pipe portion of static pressure measurement portion has a static pressure measurement head; The total head measurement section is a large-sized relatively single-core tube, be used to measure the total head of pipeline, the wall of total head measurement section has plural total head measured hole, and an end of total head measurement section has an average total head measuring head, lead to mutually with the total head measured hole, according to the difference of the measured static pressure of the total head of average total head measuring head and static pressure measurement head, try to achieve average dynamic pressure.
In the average dynamic pressure measurement device of above-mentioned bushing type, static bole is positioned at the reverse position of total head measured hole.Again, the total head measured hole of total head measurement section is provided with according to homalographic concentric circles principle.
In addition, the average dynamic pressure measurement device of above-mentioned bushing type more includes a pressure gauge, and this pressure gauge is connected to the average total head measuring head and the static pressure measurement portion of total head measurement section, with the difference of the total head of measuring average total head measuring head and static pressure and try to achieve average dynamic pressure.The average dynamic pressure measurement device of above-mentioned bushing type more comprises plural flexible pipe, and being used for that pressure gauge is connected to the total head measurement section respectively has average total head measuring head and static pressure measurement head.
Again, for the purpose of fixing, the total head measurement section preferably has fixed part, and spiral locking part for example is for fixing to pipeline.
The average dynamic pressure measurement device of bushing type in the utility model has following advantage:
The first, simultaneously measure a plurality of measurement points in the pipeline, and need not adjust can automatic continuous the measurement, therefore time saving and energy saving, can reduce the measurement cost.
The second, adopt bushing type design because measurement mechanism changes, to be under the good situation on a small quantity, can reduce installation risk at the bore operation of excessive risk gas exhaust pipings such as semiconductor.
Three, it is quick, easy to have the action implemented, and measures characteristics accurately, is again the average dynamic pressure measurement device of bushing type of single-measurement pipeline simultaneously.
Description of drawings
The specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 a is the synoptic diagram of traditional pitot tube;
Fig. 1 b is along the sectional view of A-A line among Fig. 1 a;
Fig. 2 is the synoptic diagram of multipoint mode total head measurement point;
Fig. 3 is the synoptic diagram of the average dynamic pressure measurement pipe of the utility model middle sleeve formula;
Fig. 4 is that the average dynamic pressure measurement device of the utility model middle sleeve formula is installed on the synoptic diagram when carrying out flow measurement behind the pipeline.
Embodiment
The average dynamic pressure that the average dynamic pressure measurement device of bushing type in the utility model is used to measure a pipeline.As shown in Figure 3 and Figure 4, be an embodiment of the average dynamic pressure measurement device of the utility model middle sleeve formula.
As shown in Figure 3, the average dynamic pressure measurement pipe 100 of bushing type in the present embodiment includes total head measuring tube 110, total head measuring tube 110 is as the total head measurement section of the average dynamic pressure measurement device of bushing type, it is a large-sized relatively single-core tube, its material can be stainless steel, wall at total head measuring tube 110 is provided with plural total head measured hole 111 and 112 (being four total head measured holes in the present embodiment), and this measured hole can be provided with according to the homalographic concentric circles principle shown in Fig. 2.One end of total head measuring tube 110 is provided with an average total head measuring head 114, leads to mutually with each total head measured hole 111,112.In addition, the total head measuring tube has more the thread 113 as fixed part at the position near two ends.Static pressure tube 120 is a undersized relatively single chip bending pipe as the static pressure measurement portion of the average dynamic pressure measurement device of bushing type, and its material can be stainless steel.Static pressure tube 120 comprise parallel with flow direction first section pipe portion and with the uneven second section pipe portion of flow direction.Wherein, it is outer and have a static bole 121 that total head measurement section 110 is extended by first section pipe portion.Second section pipe portion has a static pressure measurement head 122.
As shown in Figure 4, when fluid is to flow in the pipeline 50 of R at radius, and when the measurement mechanism of present embodiment is installed, total head measuring tube 110 by the sealed tube wall that is fixed in pipeline 50 of the spiral of thread 113, nut 30, is used to measure the average total head of pipeline 50.In addition, static pressure tube 120 is arranged in the pipe of total head measuring tube 110, is used to measure the static pressure of pipeline 50.In addition, the average total head measuring head 114 of total head measuring tube 110 and the static pressure measurement head 122 of static pressure tube 120 are connected to the high voltage input terminal 62 and low pressure input end 61 of pressure gauge 60 respectively by flexible pipe 41,42, make pressure gauge 60 can measure the total head of average total head measuring head 114 and the difference of static pressure, and try to achieve the average dynamic pressure of pipeline 50.Therefore, by measurement mechanism in the utility model, can on pressure gauge 60, directly read the average dynamic pressure value of pipeline 50.
In this mandatory declaration, the position of relevant static pressure tube 120, this pipe adopts undersized relatively single chip bending pipe to insert in the total head measuring tube 110 and is fixed, and the position of static pressure measurement pore 121 and projection length can be adjusted according to actual flow field situation.As shown in Figure 4, desire is measured the dynamic pressure of flowing gas in the pipeline 50, and its installation direction judged according to pipeline inner fluid direction, promptly total head measured hole 111 and 112 position answer object gas flow to.
Measurement mechanism in the utility model adopts the bushing type design, therefore at the bore operation of excessive risk gas exhaust pipings such as semiconductor being under the good situation on a small quantity, can reduce installation risk and measure a plurality of measurement points in the pipeline simultaneously with single survey pipe, and need not adjust and get final product automatic continuous the measurement, therefore time saving and energy saving, can reduce the measurement cost.
In addition; though more than the preferred embodiment in the utility model is described; but can not be as protection domain of the present utility model; promptly should be understood that to those skilled in the art; do not breaking away from variation and the modification that to make equivalence under the design spirit of the present utility model to it; therefore, every not breaking away from the equivalence variation of having done under the design spirit of the present utility model and modification, all should think to fall into protection domain of the present utility model.
Claims (8)
1. average dynamic pressure measurement device of bushing type, it is characterized in that: it includes:
One is used to measure the total head measurement section of pipeline total head, and this total head measurement section is a large-sized relatively single-core tube, is arranged at the inside of pipeline;
One is used to measure the static pressure measurement portion of pipeline static pressure, and this static pressure measurement portion is a undersized relatively single chip bending pipe, is arranged in the described total head measurement section; And
A plurality of flexible pipes;
The difference of one average total head of utilize measuring and static pressure and try to achieve the pressure gauge of average dynamic pressure, this pressure gauge is connected to described total head measurement section and static pressure measurement portion through described flexible pipe.
2. according to the average dynamic pressure measurement device of the bushing type described in the claim 1, it is characterized in that: described static pressure measurement portion comprises first section pipe portion and the second section pipe portion that is connected, this first section pipe portion is parallel with the flow direction of fluid, and second section with fluid flow direction not parallel.
3. according to the average dynamic pressure measurement device of the bushing type described in the claim 2, it is characterized in that: first section pipe portion of described static pressure measurement portion extends to outside the total head measurement section, and has a static bole that is used to measure the pipeline static pressure.
4. according to the average dynamic pressure measurement device of the bushing type described in the claim 1, it is characterized in that: an end of second section pipe portion of described static pressure measurement portion has a static pressure measurement head, and this static pressure measurement head is connected to described pressure gauge through described flexible pipe.
5. according to the average dynamic pressure measurement device of the bushing type described in the claim 1, it is characterized in that: the wall of described total head measurement section has plural total head measured hole, one end of this total head measurement section has an average total head measuring head, and this average total head measuring head is connected to described pressure gauge by described flexible pipe.
6. according to the average dynamic pressure measurement device of the bushing type described in the claim 5, it is characterized in that: the total head measured hole of described total head measurement section is provided with according to the homalographic concentric circles mode of pipeline.
7. according to the average dynamic pressure measurement device of bushing type described in the claim 1, it is characterized in that: more include the fixed part that is used for the average dynamic pressure measurement device of bushing type is fixed in pipeline.
8. according to the average dynamic pressure measurement device of the bushing type described in the claim 7, it is characterized in that: described fixed part is the spiral closing component structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249004 CN2651716Y (en) | 2003-09-23 | 2003-09-23 | Sleeving average dynamic pressure measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249004 CN2651716Y (en) | 2003-09-23 | 2003-09-23 | Sleeving average dynamic pressure measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651716Y true CN2651716Y (en) | 2004-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249004 Expired - Fee Related CN2651716Y (en) | 2003-09-23 | 2003-09-23 | Sleeving average dynamic pressure measuring apparatus |
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| CN (1) | CN2651716Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686736A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Pressure taking head of Pitotbar flow sensor |
| CN111810222A (en) * | 2020-06-12 | 2020-10-23 | 煤科集团沈阳研究院有限公司 | Method for measuring gas extraction parameters based on pitot tube |
| US11022518B2 (en) * | 2017-10-27 | 2021-06-01 | Subaru Corporation | Wall surface pressure measurement structure and wind-tunnel test apparatus |
| CN114593863A (en) * | 2022-02-28 | 2022-06-07 | 英飞同仁风机股份有限公司 | Pitot tube for measuring average pressure |
| CN114608793A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Static pressure measuring device for wind tunnel and static pressure measuring method thereof |
-
2003
- 2003-09-23 CN CN 03249004 patent/CN2651716Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11022518B2 (en) * | 2017-10-27 | 2021-06-01 | Subaru Corporation | Wall surface pressure measurement structure and wind-tunnel test apparatus |
| CN110686736A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Pressure taking head of Pitotbar flow sensor |
| CN111810222A (en) * | 2020-06-12 | 2020-10-23 | 煤科集团沈阳研究院有限公司 | Method for measuring gas extraction parameters based on pitot tube |
| CN114593863A (en) * | 2022-02-28 | 2022-06-07 | 英飞同仁风机股份有限公司 | Pitot tube for measuring average pressure |
| CN114608793A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Static pressure measuring device for wind tunnel and static pressure measuring method thereof |
| CN114608793B (en) * | 2022-05-10 | 2022-07-12 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Static pressure measuring device for wind tunnel and static pressure measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041027 Termination date: 20120923 |