CN202305556U - Wind speed sensor applied in biological safety cabinet body - Google Patents
Wind speed sensor applied in biological safety cabinet body Download PDFInfo
- Publication number
- CN202305556U CN202305556U CN2011203910960U CN201120391096U CN202305556U CN 202305556 U CN202305556 U CN 202305556U CN 2011203910960 U CN2011203910960 U CN 2011203910960U CN 201120391096 U CN201120391096 U CN 201120391096U CN 202305556 U CN202305556 U CN 202305556U
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- sensor outer
- wind speed
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Abstract
The utility model relates to a wind speed sensor applied in a biological safety cabinet body. The wind speed sensor comprises a first sensor outer tube, a second sensor outer tube and a sensor inner tube. The first sensor outer tube and the second sensor outer tube are respectively welded at two ends of the sensor inner tube. One section of the sensor inner tube is nested in the first sensor outer tube, and the other section of the sensor inner tube is nested in the second sensor outer tube. Sensor branch tubes are welded on the first sensor outer tube and the second sensor outer tube. When the wind speed sensor applied in the biological safety cabinet body is used, a straight tube horizontal to the wind speed direction is installed in air channel, the response speed is improved obviously, and the service life of the wind speed sensor is obviously superior to the service life of a hot-bulb type wind speed sensor. When the wind speed sensor is used in a safety cabinet, the sensor can instantly sense and adjust the fan frequency immediately when an air inlet is blocked by obstructing objects, such as hands or arms. The wind speed sensor can be still recovered to an original operation state after the obstructing objects are removed.
Description
Technical field
The utility model relates to a kind of air velocity transducer, relates in particular to a kind of air velocity transducer that is applied in the Biohazard Safety Equipment cabinet.
Background technology
Survey wind speed in existing most of Biohazard Safety Equipment cabinet and all adopt hot-bulb formula air velocity transducer, the principle of this air velocity transducer is to measure the hot-bulb temperature variation, converts wind speed to and changes, and its shortcoming is that reaction velocity is slow, and the hot-bulb life-span is short.
The utility model content
The utility model is slow to existing hot-bulb formula air velocity transducer reaction velocity, and the deficiency that the hot-bulb life-span is short provides a kind of air velocity transducer that is applied in the Biohazard Safety Equipment cabinet.
The technical scheme that the utility model solves the problems of the technologies described above is following: a kind of air velocity transducer that is applied in the Biohazard Safety Equipment cabinet comprises pipe in first sensor outer tube, the second sensor outer tube and the sensor, and the said first sensor outer tube and the second sensor outer tube are welded on the two ends of pipe in the sensor respectively; One section of pipe is nested in the first sensor outer tube in the said sensor, and another section is nested in the second sensor outer tube; All be welded with sensor manifold on the said first sensor outer tube and the second sensor outer tube.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, the length ratio of the length of said first sensor outer tube and the second sensor outer tube is 1:2.
Further, have otch between the said first sensor outer tube and the second sensor outer tube, said incision is welded with copper arc welding electrode, on said copper arc welding electrode is welded on simultaneously and manages in the sensor.
Further, the weld of said sensor manifold and first sensor outer tube also is welded with copper arc welding electrode.
Further, the weld of the said sensor manifold and the second sensor outer tube also is welded with copper arc welding electrode.
The beneficial effect of the utility model is: the utility model is applied to the interior air velocity transducer of Biohazard Safety Equipment cabinet in use; The straight tube level is installed in the air channel in wind speed direction; Reaction velocity obviously improves, and the life-span of this air velocity transducer obviously is superior to hot-bulb formula air velocity transducer; In safety cabinet, use, as long as air inlet has shelter, like hand or arm, sensor will be sensed, and adjusts the blower fan frequency at once.Still can get back to original running status behind the shelter place to go.
Description of drawings
Fig. 1 is applied to the perspective view of the air velocity transducer in the Biohazard Safety Equipment cabinet for the utility model;
Fig. 2 is applied to the front view of the air velocity transducer in the Biohazard Safety Equipment cabinet for the utility model;
Fig. 3 is the vertical view of Fig. 2 along the A-A direction;
Fig. 4 is the side view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
Shown in Fig. 1 to 4; The said air velocity transducer that is applied in the Biohazard Safety Equipment cabinet comprises pipe 2 in first sensor outer tube 1, the second sensor outer tube 6 and the sensor, and the said first sensor outer tube 1 and the second sensor outer tube 6 are welded on the two ends of pipe 2 in the sensor respectively; One section of pipe 2 is nested in the first sensor outer tube 1 in the said sensor, and another section is nested in the second sensor outer tube 6; All be welded with sensor manifold 3 on the said first sensor outer tube 1 and the second sensor outer tube 6.The length ratio of the length of said first sensor outer tube 1 and the second sensor outer tube 6 is 1:2.Have otch 5 between the said first sensor outer tube 1 and the second sensor outer tube 6, said otch 5 places are welded with copper arc welding electrode 4, and said copper arc welding electrode 4 is welded on simultaneously in the sensor and manages on 2.The weld of said sensor manifold 3 and first sensor outer tube 1 also is welded with copper arc welding electrode 4.The weld of the said sensor manifold 3 and the second sensor outer tube 6 also is welded with copper arc welding electrode 4.
Two sensor outer tubes are installed in the air channel; Between two sensor outer tubes, make and block the windage that increases the sensor outer tube of pipe in one section external diameter sensor identical with the sensor internal diameter; Draw a sensor manifold respectively at the inlet end of first sensor outer tube and the endpiece of the second sensor outer tube, the pressure reduction in these two sensor manifold is measured.When not having air flow in the sensor outer tube, pressure reduction is zero; When the inlet end of first sensor outer tube flows to the endpiece of the second sensor outer tube, just produced pressure reduction in the first sensor outer tube and the second sensor outer tube as air, inlet pressure produces positive pressure differential greater than top hole pressure.Wind speed is more little, and pressure reduction is more little; Wind speed is big more, and pressure reduction is also just big more.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. one kind is applied to the interior air velocity transducer of Biohazard Safety Equipment cabinet; It is characterized in that; Comprise pipe in first sensor outer tube, the second sensor outer tube and the sensor, the said first sensor outer tube and the second sensor outer tube are welded on the two ends of pipe in the sensor respectively; One section of pipe is nested in the first sensor outer tube in the said sensor, and another section is nested in the second sensor outer tube; All be welded with sensor manifold on the said first sensor outer tube and the second sensor outer tube.
2. the air velocity transducer that is applied in the Biohazard Safety Equipment cabinet according to claim 1 is characterized in that the length ratio of the length of said first sensor outer tube and the second sensor outer tube is 1:2.
3. the air velocity transducer that is applied in the Biohazard Safety Equipment cabinet according to claim 1; It is characterized in that; Have otch between the said first sensor outer tube and the second sensor outer tube, said incision is welded with copper arc welding electrode, on said copper arc welding electrode is welded on simultaneously and manages in the sensor.
4. the air velocity transducer that is applied in the Biohazard Safety Equipment cabinet according to claim 1 is characterized in that the weld of said sensor manifold and first sensor outer tube also is welded with copper arc welding electrode.
5. the air velocity transducer that is applied in the Biohazard Safety Equipment cabinet according to claim 1 is characterized in that the weld of the said sensor manifold and the second sensor outer tube also is welded with copper arc welding electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203910960U CN202305556U (en) | 2011-10-14 | 2011-10-14 | Wind speed sensor applied in biological safety cabinet body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203910960U CN202305556U (en) | 2011-10-14 | 2011-10-14 | Wind speed sensor applied in biological safety cabinet body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305556U true CN202305556U (en) | 2012-07-04 |
Family
ID=46374428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203910960U Expired - Lifetime CN202305556U (en) | 2011-10-14 | 2011-10-14 | Wind speed sensor applied in biological safety cabinet body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305556U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852593A (en) * | 2012-11-30 | 2014-06-11 | 上海力申科学仪器有限公司 | Method for monitoring drifting of wind speed measurement unit |
| CN103852594A (en) * | 2012-11-30 | 2014-06-11 | 上海力申科学仪器有限公司 | Wind speed measurement monitoring apparatus of biohazard safety equipment |
| CN106093464A (en) * | 2016-07-27 | 2016-11-09 | 山东省科学院激光研究所 | A kind of optical fiber differential pressure air velocity transducer and application |
| CN112114167A (en) * | 2020-10-14 | 2020-12-22 | 中国计量科学研究院 | Airflow flow velocity detection and calibration device and system for biological safety cabinet |
-
2011
- 2011-10-14 CN CN2011203910960U patent/CN202305556U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852593A (en) * | 2012-11-30 | 2014-06-11 | 上海力申科学仪器有限公司 | Method for monitoring drifting of wind speed measurement unit |
| CN103852594A (en) * | 2012-11-30 | 2014-06-11 | 上海力申科学仪器有限公司 | Wind speed measurement monitoring apparatus of biohazard safety equipment |
| CN103852593B (en) * | 2012-11-30 | 2016-08-03 | 上海力申科学仪器有限公司 | The method of monitoring measuring wind speed unit drift |
| CN103852594B (en) * | 2012-11-30 | 2017-02-01 | 上海力申科学仪器有限公司 | Wind speed measurement monitoring apparatus of biohazard safety equipment |
| CN106093464A (en) * | 2016-07-27 | 2016-11-09 | 山东省科学院激光研究所 | A kind of optical fiber differential pressure air velocity transducer and application |
| CN112114167A (en) * | 2020-10-14 | 2020-12-22 | 中国计量科学研究院 | Airflow flow velocity detection and calibration device and system for biological safety cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Finance of Beijing Donglian Hal Instrument Manufacturing Co., Ltd. Document name: Notification of Approving Refund |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |