CN100470208C - (MTC) flow sensor with flow signal amplifying function - Google Patents
(MTC) flow sensor with flow signal amplifying function Download PDFInfo
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- CN100470208C CN100470208C CNB2006100426353A CN200610042635A CN100470208C CN 100470208 C CN100470208 C CN 100470208C CN B2006100426353 A CNB2006100426353 A CN B2006100426353A CN 200610042635 A CN200610042635 A CN 200610042635A CN 100470208 C CN100470208 C CN 100470208C
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- inner sleeve
- pressure
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- outer tube
- flow
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Abstract
A flow rate transducer with amplification function of flow rate signal is prepared for taking pressure at back edge of static pressure tube by measurement bar, setting pressure-taking hole of static pressure at back edge of static pressure tube and forming signal amplification component by internal and external sleeves of thin waist type and reducing pipe as well as fixed groove port being connected with said transducer.
Description
Affiliated technical field:
The present invention relates to the gas flow measurement technical field, be specifically related to a kind of (MTC) flow sensor with flow signal amplifying function.
Background technology:
The applicant is by a large amount of application and further investigation, finds that (in the measurement of the gas flow of V=4～15m/s), existing flow sensor exists the problem of the too small even no signal of flow signal at minimum velocity.
Summary of the invention:
The objective of the invention is to provide a kind of (MTC) flow sensor with flow signal amplifying function, solving existing flow sensor in the measurement of minimum velocity gas flow, the problem of the too small even no signal of the flow signal of existence.
For overcoming the problem that prior art exists, technical scheme of the present invention is: a kind of have flow signal amplifying function (MTC) flow sensor, comprise the measurement rod 1 that adopts the pressure of static tube trailing edge, the static tube trailing edge is provided with static pressure pressure tappings 2, its special character is: also comprise the signal amplifier module, this assembly comprises thin waist type inner sleeve 4 and the outer tube 5 that connects by web member 6, import one side of inner sleeve 4 and outer tube 5 is the gradually-reducing shape pipe, the end is provided with fixedly notch, should be fixedly notch connect with sensor, described static pressure pressure tappings 2 is positioned at eel-like figure place on the axis of inner sleeve 4; Described inner sleeve 4 and outer tube 5 outlets one side are taper, and inner sleeve 4 is arranged in import one side of outer tube 5, and the endpiece of inner sleeve 4 is positioned at the eel-like figure place of outer tube 5.
The inboard, import termination of above-mentioned inner sleeve 4 and outer tube 5 is provided with arc angling.
The inlet end of above-mentioned inner sleeve 4 and outer tube 5 is cylindric.Be more conducive to processing.
The end face of above-mentioned inner sleeve 4 and outer tube 5.Easy to assembly.
The static tube trailing edge of above-mentioned measurement rod 1 is provided with water conservancy diversion mouth 7, is provided with pressure port in this water conservancy diversion mouth 7, and it forms streamlined outer surface with nested cooperation of the static tube of measuring rod 1, and the pressure port in the water conservancy diversion mouth 7 is communicated with the static pressure pressure tappings 2 on the static tube trailing edge.
Compared with prior art, advantage of the present invention:
1. further augmented flow signal: by the two-stage speed-raising static port pressure is reduced significantly, just can obtain big differential pressure signal, promptly reach the purpose of augmented flow signal.Still can measure suitable differential pressure signal under minimum velocity, be the latest model of the little speed gas flow measurement of heavy caliber.Compare with the single-stage speed enhancing apparatus, under the identical condition of flow, realize that differential pressure signal promotes more than 3 times again.The present invention efficiently solves and improves the key technical problem of measuring sensitivity.
2. make whole flow sensor have better average rate performance: by signalization amplifier module on the stagnation pressure pressure tappings of measuring rod,, just can realize the average rate measurement well, the measurement result accuracy is improved to the irregular pipeline of velocity flow profile; If, will play better average rate measurement effect according to design several groups of stagnation pressure pressure tappings and the signal amplifier modules on it of increasing more.
3. applied widely: the present invention can the matching used pipe diameter scope of measuring rod be 400mm≤D≤9000mm; Measurable gas flow rate reaches as high as 50m/s; Can enlarge the scope of application by the water conservancy diversion mouth that increases simultaneously, on the sensor that adopts the pressure of static tube trailing edge, all can use.
4. good stability, accuracy height, safe and reliable: the static pressure pressure tappings is the flow velocity highest point in the multistage multiplying arrangement of flow signal, and the dust in the static pressure pressure tappings can be sucked away, is difficult for stopping up, and is safe and reliable.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3;
Fig. 4 is an one-piece construction synoptic diagram of the present invention.
Description of reference numerals is as follows:
1-measurement rod, 2--static pressure pressure tappings, 3--stagnation pressure pressure tappings, 4--inner sleeve, 5--outer tube, 6--web member, 7--water conservancy diversion mouth.
Embodiment:
To be explained in detail the present invention by specific embodiment below.
Embodiment 1, referring to Fig. 1.The present invention includes the measurement rod 1 that adopts the pressure of static tube trailing edge, the measurement rod of applicant described in ZL03262719.X for example, the static tube trailing edge is provided with static pressure pressure tappings 2, also comprise the signal amplifier module, this assembly comprises thin waist type inner sleeve 4 and the outer tube 5 that connects by 6, import one side of inner sleeve 4 and outer tube 5 is the bowl-shape pipe of convergent, inlet end is cylindric, and the inboard in the termination is provided with arc angling, the end is provided with fixedly notch, fixedly notch connects with static tube one side of sensor, and described static pressure pressure tappings 2 is positioned at the axis eel-like figure place of inner sleeve 4; Described inner sleeve 4 and outer tube 5 outlets one side are taper, and inner sleeve 4 is arranged in import one side of outer tube 5, and the inlet end face of inner sleeve 4 and outer tube 5 flushes, and the endpiece of said inner sleeve 4 is positioned at the eel-like figure place of outer tube 5.
Above the size of the fixedly notch that is provided with of said inner sleeve 4 and outer tube 5 entrance points make according to the cross sectional shape of measuring rod.
Referring to Fig. 4, use when of the present invention, measure the stagnation pressure pressure tappings of rod and the static pressure pressure tappings is corresponding is provided with or alternate setting, a multistage multiplying arrangement of flow signal all is installed on each static pressure pressure tappings.For example on the measurement rod, stagnation pressure pressure tappings 4～51 places are set; The static pressure pressure tappings is provided with 3～50 places, and a multistage multiplying arrangement of flow signal all can be installed on each static pressure pressure tappings.
Claims (5)
1, a kind of MTC flow sensor with flow signal amplifying function, comprise the measurement rod (1) that adopts the pressure of static tube trailing edge, the static tube trailing edge is provided with static pressure pressure tappings (2), it is characterized in that: also comprise the signal amplifier module, this assembly comprises thin waist type inner sleeve (4) and the outer tube (5) that connects by web member (6), import one side of inner sleeve (4) and outer tube (5) is the gradually-reducing shape pipe, the end is provided with fixedly notch, should be fixedly notch connect with sensor, described static pressure pressure tappings (2) is positioned at eel-like figure place on the axis of inner sleeve (4); Described inner sleeve (4) and outer tube (5) outlet one side are taper, and inner sleeve (4) is arranged in import one side of outer tube (5), and the endpiece of inner sleeve (4) is positioned at the eel-like figure place of outer tube (5).
2, a kind of MTC flow sensor with flow signal amplifying function as claimed in claim 1, it is characterized in that: the inboard, import termination of described inner sleeve (4) and outer tube (5) is provided with arc angling.
3, a kind of MTC flow sensor with flow signal amplifying function as claimed in claim 2, it is characterized in that: the inlet end of described inner sleeve (4) and outer tube (5) is cylindric.
4, as claim 1 or 2 or 3 described a kind of MTC flow sensors, it is characterized in that: the end face of described inner sleeve (4) and outer tube (5) with flow signal amplifying function.
5, as claim 1 or 2 or 3 described a kind of MTC flow sensors with flow signal amplifying function, it is characterized in that: the described static tube trailing edge of measuring rod (1) is provided with water conservancy diversion mouth (7), be provided with pressure port in this water conservancy diversion mouth (7), it forms streamlined outer surface with nested cooperation of the static tube of measuring rod (1), and the pressure port in the water conservancy diversion mouth (7) is communicated with the static pressure pressure tappings (2) on the static tube trailing edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100426353A CN100470208C (en) | 2006-04-06 | 2006-04-06 | (MTC) flow sensor with flow signal amplifying function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100426353A CN100470208C (en) | 2006-04-06 | 2006-04-06 | (MTC) flow sensor with flow signal amplifying function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050973A CN101050973A (en) | 2007-10-10 |
| CN100470208C true CN100470208C (en) | 2009-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100426353A Expired - Fee Related CN100470208C (en) | 2006-04-06 | 2006-04-06 | (MTC) flow sensor with flow signal amplifying function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100470208C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303150A (en) * | 2018-02-23 | 2018-07-20 | 南京亿准纳自动化控制技术有限公司 | Orifice union, rectification and flow measurement device |
| CN108332807B (en) * | 2018-02-23 | 2021-03-02 | 南京亿准纳自动化控制技术有限公司 | Throttling assembly, rectification and flow measuring device |
| CN108303149A (en) * | 2018-02-23 | 2018-07-20 | 南京亿准纳自动化控制技术有限公司 | Orifice union, rectification and flow measurement device |
| EP3745095B1 (en) | 2018-02-23 | 2023-07-26 | Nanjing Exactra Automation Control Technology Co., Ltd. | Throttling component and rectification and flow measurement device |
-
2006
- 2006-04-06 CN CNB2006100426353A patent/CN100470208C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101050973A (en) | 2007-10-10 |
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Granted publication date: 20090318 Termination date: 20160406 |
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| CF01 | Termination of patent right due to non-payment of annual fee |