CN105181214A - Vibrating wire pressure sensor - Google Patents
Vibrating wire pressure sensor Download PDFInfo
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- CN105181214A CN105181214A CN201510273238.6A CN201510273238A CN105181214A CN 105181214 A CN105181214 A CN 105181214A CN 201510273238 A CN201510273238 A CN 201510273238A CN 105181214 A CN105181214 A CN 105181214A
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- pressure side
- side diaphragm
- vibrating wire
- low
- protection tube
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Abstract
The invention discloses a vibrating wire pressure sensor, which comprises a vibrating wire, a base, a permanent magnet, a high pressure side diaphragm, a low pressure side diaphragm, a protection tube, a fixed piece, a pressure transmitting channel and silicone oil, and is characterized in that the permanent magnet comprises an N-pole magnet and an S-pole magnet, the high pressure side diaphragm and the low pressure side diaphragm are respectively arranged at two sides of the base, the protection tube is fixed at the top part of the base, and the N-pole magnet and the S-pole magnet are respectively arranged at the upper end and the lower end of the protection tube; the high pressure side diaphragm and the low pressure side diaphragm are further provided with the pressure transmitting channel therebetween, and the pressure transmitting channel is internally provided with the silicone oil; the protection tube is internally provided with the vibrating wire, one end of the vibrating wire is connected with the fixed piece, the fixed piece is contacted with the inner side of the high pressure side diaphragm, and the other end of the vibrating wire is connected with the low pressure side diaphragm. The vibrating wire pressure sensor provided by the invention has a high anti-interference ability, and is small in null drift, good in temperature characteristic, simple in structure, high in resolution and stable in performance.
Description
Technical field
The present invention relates to a kind of vibrating wire pressure sensor, belong to pressure sensor technique field.
Background technology
At present, pressure transducer mainly adopts type vibration wire, and vibratory string one end of this sensor is fixed, and the other end is attached on elastic sensation pressuring film plate.One block of soft iron is equipped with at the middle part of string, is placed in the magnetic field of the driver of magnet and coil formation.But the non-linear of this pressure transducer can affect measuring accuracy, to working frequency range with prestressed to arrange requirement higher.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of vibrating wire pressure sensor.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of vibrating wire pressure sensor, comprise vibratory string, pedestal, permanent magnet, high-pressure side diaphragm, low-pressure side diaphragm, protection tube, fixture, pressure transmission passage, silicone oil, described permanent magnet comprises N pole magnet, S pole magnet, described pedestal both sides are respectively arranged with high-pressure side diaphragm, low-pressure side diaphragm, described pedestal top is fixed with protection tube, and described protection tube upper/lower terminal is respectively arranged with N pole magnet, S pole magnet; Also be provided with pressure transmission passage between described high-pressure side diaphragm, low-pressure side diaphragm, in described pressure transmission passage, be provided with silicone oil; Be provided with vibratory string in described protection tube, vibratory string one end is connected with fixture, and described fixture contacts with inside the diaphragm of high-pressure side, and the vibratory string other end is connected with low-pressure side diaphragm.
Also comprise initial tension spring leaf, described initial tension spring leaf is arranged in low-pressure side diaphragm, for ensureing that vibratory string has initial tension.
Also comprise protecting sheathing, packing ring, overload-protection spring, described protecting sheathing is arranged on outside low-pressure side diaphragm, is provided with packing ring in protecting sheathing, and described overload-protection spring one end is arranged on packing ring, and the other end contacts with outside low-pressure side diaphragm.
Also comprise insulating cell, described insulating cell is socketed in protection tube two ends respectively.
Preferably, described fixture is set to cap-like structure.
Preferably, the material of described high-pressure side diaphragm, low-pressure side diaphragm all adopts copper beryllium alloy.
Beneficial effect: a kind of vibrating wire pressure sensor provided by the invention, the design has stronger antijamming capability, and drift is little, good temp characteristic, structure are simple, resolution is high, stable performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of vibrating wire pressure sensor, comprise vibratory string 1, pedestal 2, permanent magnet, high-pressure side diaphragm 3, low-pressure side diaphragm 4, protection tube 5, fixture 6, pressure transmission passage 7, silicone oil 8, described permanent magnet comprises N pole magnet 9, S pole magnet 10, described pedestal 2 both sides are respectively arranged with high-pressure side diaphragm 3, low-pressure side diaphragm 4, described pedestal 2 top is fixed with protection tube 5, and described protection tube 5 upper/lower terminal is respectively arranged with N pole magnet 9, S pole magnet 10; Also be provided with pressure transmission passage 7 between described high-pressure side diaphragm 3, low-pressure side diaphragm 4, in described pressure transmission passage 7, be provided with silicone oil 8; Be provided with vibratory string 1 in described protection tube 5, vibratory string 1 one end is connected with fixture 6, and described fixture 6 contacts with inside high-pressure side diaphragm 3, and vibratory string 1 other end is connected with low-pressure side diaphragm 4.
Also comprise initial tension spring leaf 11, described initial tension spring leaf 11 is arranged in low-pressure side diaphragm 4, for ensureing that vibratory string has initial tension.
Also comprise protecting sheathing 12, packing ring 13, overload-protection spring 14; described protecting sheathing 12 is arranged on outside low-pressure side diaphragm 4; be provided with packing ring 13 in protecting sheathing 12, described overload-protection spring 14 one end is arranged on packing ring 13, and the other end contacts with outside low-pressure side diaphragm 4.
Also comprise insulating cell 15, described insulating cell 15 is socketed in protection tube 5 two ends respectively.
Concrete use-pattern is as follows: when applying differential pressure, silicone oil autobiography pressure passageway presses to low pressure diaphragm, leaves the tension force that low-pressure side base increases vibratory string, improves resonance frequency, and differential pressure change makes the corresponding change of the vibration frequency of vibratory string.Sensor has overload protection arrangement, and during overvoltage, the overload-protection spring compression of packing ring central authorities produces reacting force, and vibratory string tension force is no longer increased, and high-pressure side diaphragm will be close to and pedestal prevent effectively overload damage diaphragm.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a vibrating wire pressure sensor, comprise vibratory string, pedestal, permanent magnet, it is characterized in that: also comprise: high-pressure side diaphragm, low-pressure side diaphragm, protection tube, fixture, pressure transmission passage, silicone oil, described permanent magnet comprises N pole magnet, S pole magnet, described pedestal both sides are respectively arranged with high-pressure side diaphragm, low-pressure side diaphragm, described pedestal top is fixed with protection tube, and described protection tube upper/lower terminal is respectively arranged with N pole magnet, S pole magnet; Also be provided with pressure transmission passage between described high-pressure side diaphragm, low-pressure side diaphragm, in described pressure transmission passage, be provided with silicone oil; Be provided with vibratory string in described protection tube, vibratory string one end is connected with fixture, and described fixture contacts with inside the diaphragm of high-pressure side, and the vibratory string other end is connected with low-pressure side diaphragm.
2. a kind of vibrating wire pressure sensor according to claim 1, is characterized in that: also comprise initial tension spring leaf, described initial tension spring leaf is arranged in low-pressure side diaphragm, for ensureing that vibratory string has initial tension.
3. a kind of vibrating wire pressure sensor according to claim 1; it is characterized in that: also comprise protecting sheathing, packing ring, overload-protection spring; described protecting sheathing is arranged on outside low-pressure side diaphragm; packing ring is provided with in protecting sheathing; described overload-protection spring one end is arranged on packing ring, and the other end contacts with outside low-pressure side diaphragm.
4. a kind of vibrating wire pressure sensor according to claim 1, is characterized in that: also comprise insulating cell, and described insulating cell is socketed in protection tube two ends respectively.
5. a kind of vibrating wire pressure sensor according to claim 1, is characterized in that: described fixture is set to cap-like structure.
6. a kind of vibrating wire pressure sensor according to claim 1, is characterized in that: the material of described high-pressure side diaphragm, low-pressure side diaphragm all adopts copper beryllium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273238.6A CN105181214A (en) | 2015-05-26 | 2015-05-26 | Vibrating wire pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273238.6A CN105181214A (en) | 2015-05-26 | 2015-05-26 | Vibrating wire pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105181214A true CN105181214A (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510273238.6A Pending CN105181214A (en) | 2015-05-26 | 2015-05-26 | Vibrating wire pressure sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105181214A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784209A (en) * | 2016-01-27 | 2016-07-20 | 王建美 | Vibrating string sensor |
| CN107063549A (en) * | 2017-06-07 | 2017-08-18 | 利穗科技(苏州)有限公司 | Non-intrusion type flexible pipe fluid pressure sensor |
| CN107727018A (en) * | 2017-09-30 | 2018-02-23 | 广西交通科学研究院有限公司 | The correction for temperature effect method of vibrating string type strain transducer |
| CN109668657A (en) * | 2018-12-19 | 2019-04-23 | 上海建工集团股份有限公司 | Type vibration wire pressure rings denoising device and method |
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| US5123282A (en) * | 1990-05-10 | 1992-06-23 | Yokogawa Electric Corporation | Vibrating type pressure measuring device |
| CN202420727U (en) * | 2011-12-26 | 2012-09-05 | 杨波 | Long-acting clamping mechanism of vibrating-string type sensor string wire |
| CN103439033A (en) * | 2013-09-17 | 2013-12-11 | 青岛理工大学 | Anchor clamps vibration wire formula fibre muscle tension measuring device |
| CN203929308U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | A kind of novel rotating sensor that shakes |
| CN104406721A (en) * | 2014-11-20 | 2015-03-11 | 常州市浩峰灯具厂 | Vibration wire type detection element |
| CN204881956U (en) * | 2015-05-26 | 2015-12-16 | 苏州华徕光电仪器有限公司 | Vibration wire formula pressure sensor |
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2015
- 2015-05-26 CN CN201510273238.6A patent/CN105181214A/en active Pending
Patent Citations (6)
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| US5123282A (en) * | 1990-05-10 | 1992-06-23 | Yokogawa Electric Corporation | Vibrating type pressure measuring device |
| CN202420727U (en) * | 2011-12-26 | 2012-09-05 | 杨波 | Long-acting clamping mechanism of vibrating-string type sensor string wire |
| CN103439033A (en) * | 2013-09-17 | 2013-12-11 | 青岛理工大学 | Anchor clamps vibration wire formula fibre muscle tension measuring device |
| CN203929308U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | A kind of novel rotating sensor that shakes |
| CN104406721A (en) * | 2014-11-20 | 2015-03-11 | 常州市浩峰灯具厂 | Vibration wire type detection element |
| CN204881956U (en) * | 2015-05-26 | 2015-12-16 | 苏州华徕光电仪器有限公司 | Vibration wire formula pressure sensor |
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| 何超然: ""823DP系列差压变送器介绍"", 《炼油化工自动化》 * |
| 叶江祺: ""振弦式差压传感器国外应用情况"", 《电力建设》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784209A (en) * | 2016-01-27 | 2016-07-20 | 王建美 | Vibrating string sensor |
| CN107063549A (en) * | 2017-06-07 | 2017-08-18 | 利穗科技(苏州)有限公司 | Non-intrusion type flexible pipe fluid pressure sensor |
| CN107727018A (en) * | 2017-09-30 | 2018-02-23 | 广西交通科学研究院有限公司 | The correction for temperature effect method of vibrating string type strain transducer |
| CN107727018B (en) * | 2017-09-30 | 2020-03-03 | 广西交通科学研究院有限公司 | Temperature influence correction method of vibrating wire type strain sensor |
| CN109668657A (en) * | 2018-12-19 | 2019-04-23 | 上海建工集团股份有限公司 | Type vibration wire pressure rings denoising device and method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |