CN201535706U - Permeable membrane soil hydraulic pressure sensor - Google Patents
Permeable membrane soil hydraulic pressure sensor Download PDFInfo
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- CN201535706U CN201535706U CN2009202842441U CN200920284244U CN201535706U CN 201535706 U CN201535706 U CN 201535706U CN 2009202842441 U CN2009202842441 U CN 2009202842441U CN 200920284244 U CN200920284244 U CN 200920284244U CN 201535706 U CN201535706 U CN 201535706U
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Abstract
The utility model relates to a permeable membrane soil hydraulic pressure sensor characterized in that the natural volcano stone permeable membrane is mounted in a fixed protective sheath which is threadingly connected with a pressure adapter; silicon pressure core is sealed in the pressure adapter through a O-shaped seal ring; the pressure ring connects and compacts silicon pressure core through the thread and pressure adapter; the electric signal amplifying board is fixed on the pressure ring through the screw; a housing and the pressure adapter are welded into a whole by argon arc welding and filled with silicagel; a output cable is connected with the electric signal amplifying board; A ring washer and the O-shaped seal ring are sheathed on the output cable and fixed by compacting nut; a heat shrinking protective sheath is at connection position of the housing, compacting nut and the output cable for protection. The advantage consists in that the sensor has good permeability, small size, light weight, all-stainless steel water-tight structure, pressure and corrosion resistance characteristic, good stability, high comprehensive precision and small error etc.
Description
Technical field
The utility model relates to water pressure sensor in Measurement of Dam, bottom, the rivers and lakes soil, measuring media is soil and mud, the film that sensor is manufactured circular cylindrical shape with natural pelelith is the infiltration parts, belongs to permeable membrane holard pressure sensor technical field.
Background technology
The kind of the pressure transducer of current measurement water is a lot, main typical piezoresistive silicon sensor, and working range is at 1Kpa～100Mpa, and measuring media is a liquid, for the pressure survey of water in thickness mud and the soil certain defective is arranged; Because piezoresistive silicon sensor is the silicon microchip structure, cannot directly measure water in thickness mud and the soil, must be encapsulated in it in the Stainless Steel Shell, throat thickness is that the 316L stainless steel membrane of 0.0254mm is as sensitive surface, inside is full of silicone oil as the conducting pressure medium, forms the Silicon pressure core body.Because thickness mud and soil easily stop up the 316L stainless steel diaphragm sensitive surface of Silicon pressure core body, and have harder particle in them and destroy 316L stainless steel diaphragm sensitive surface, to such an extent as to influence the measuring accuracy of sensor, more likely damage sensor, measurement can't be carried out.
Summary of the invention
The purpose of this utility model is intended to overcome the existing in prior technology defective, utilize the infiltration and the strong characteristics of compressive property of natural pelelith, be processed into cylindrical shape, silicon piezoresistance type pressure sensor miniaturization in addition, corrosion-resistant, measurement range is wide and stability is good characteristics propose a kind of permeable membrane holard pressure transducer; Can be embedded in the body of dam and the bottom of rivers and lakes, water pressure in the bottom soil of in the body of Measurement of Dam and rivers and lakes, to measure acquired signal and spread out of, adopt the mode of monitoring in real time, the hydraulic pressure in the bottom soil of in the body of dam and rivers and lakes will be detected.
Technical solution of the present utility model: it is characterized in that comprising fixedly protective sleeve, natural pelelith permeable membrane, Silicon pressure core body, " O " RunddichtringO, compression fittings, pressure ring, mounting screw, electric signal processing and amplifying plate, housing, embedding silica gel, ring washer, " O " RunddichtringO, gland nut, pyrocondensation sheath, output cable; Wherein natural pelelith permeable membrane is installed in fixedly in the protective sleeve, fixedly protective sleeve and compression fittings are by being threaded, the Silicon pressure core body is installed in the compression fittings by the sealing of " O " RunddichtringO, pressure ring is connected with compression fittings by screw thread and compresses the Silicon pressure core body, electric signal processing and amplifying plate is fixed on the pressure ring with mounting screw, housing and compression fittings are connected into integral body by argon arc welding, this whole interior embedding silica gel; Output cable is connected with electric signal processing and amplifying plate, and ring washer and " O " RunddichtringO are enclosed within on the output cable, and fastening with gland nut, the pyrocondensation of pyrocondensation sheath is at the connecting portion of housing, gland nut and output cable.Play the root of protection output cable; Fixedly protective sleeve, compression fittings, pressure ring, housing and gland nut adopt the processing of 1Cr18Ni9Ti stainless steel, make the sensor integral sealing, the pressure of anti-soil and water, anti-soil and water long-term corrosion.
Advantage of the present utility model: the pyrocondensation of pyrocondensation sheath is at the connecting portion of housing, gland nut and output cable.Play the root of protection output cable; Fixedly protective sleeve, compression fittings, pressure ring, housing and gland nut adopt the processing of 1Cr18Ni9Ti stainless steel, make the sensor integral sealing, the pressure of anti-soil and water, anti-soil and water long-term corrosion.This sensor has that permeance property is good, volume is little, in light weight, all steel watertight structure, withstand voltage etch-proof characteristics; Stability is good, synthesis precision height, advantage such as error is little.Can be embedded in the body of dam and the bottom of rivers and lakes, water pressure in the bottom soil of in the body of Measurement of Dam and rivers and lakes, to measure acquired signal and spread out of, adopt the mode of monitoring in real time, the hydraulic pressure in the bottom soil of in the body of dam and rivers and lakes will be detected.
Description of drawings
Accompanying drawing 1 is the structural representation of permeable membrane holard pressure transducer.
Accompanying drawing 2 is pressure core body compensating circuit figure.
Among the figure 1 is fixing protective sleeve, the 2nd, holard infiltration mouthful, the 3rd, natural pelelith permeable membrane, the 4th, fixed installation hole, the 5th, pressure chamber, the 6th, 316L stainless steel diaphragm, the 7th, Silicon pressure core body, the 8th, " O " RunddichtringO, the 9th, compression fittings, the 10th, pressure ring, the 11st, mounting screw, the 12nd, electric signal processing and amplifying plate, the 13rd, housing, the 14th, embedding silica gel, the 15th, ring washer, the 16th, " O " RunddichtringO, the 17th, gland nut, the 18th, pyrocondensation sheath, the 19th, output cable.
Embodiment
The contrast accompanying drawing, its structure comprises fixedly protective sleeve 1, natural pelelith permeable membrane 3, Silicon pressure core body 7, " O " RunddichtringO 8, compression fittings 9, pressure ring 10, mounting screw 11, electric signal processing and amplifying plate 12, housing 13, embedding silica gel 14, ring washer 15, " O " RunddichtringO 16, gland nut 17, pyrocondensation sheath 18, output cable 19.Wherein natural pelelith permeable membrane 3 is installed in fixedly in the protective sleeve 1, fixedly protective sleeve 1 and compression fittings 9 are by being threaded, Silicon pressure core body 7 is installed in the compression fittings 9 by 8 sealings of " O " RunddichtringO, pressure ring 10 is connected with compression fittings 9 by screw thread and compresses Silicon pressure core body 7, and electric signal processing and amplifying plate 12 usefulness mounting screws 11 are fixed on the pressure ring 10; Housing 13 and compression fittings 9 are connected into integral body, inner embedding silica gel 14 in this body by argon arc welding; Output cable 19 is connected with electric signal processing and amplifying plate 12; export from housing 13 rearward end; ring washer 15 and " O " RunddichtringO 16 are enclosed within on the output cable 19 and use gland nut 17 fastening; 18 pyrocondensations of pyrocondensation sheath shield at the connecting portion of housing 13, gland nut 17 and output cable 19.
Silicon pressure core body 7 adopts S19 type presser sensor core body, its structure is that the Silicon pressure sensitive chip sticks on the 316L stainless steel glass sintered body, weld-ring and 316L stainless steel diaphragm and the welding of 316L stainless steel glass sintered body, inner filling silicone oil, temperature-compensation circuit is installed on the pin of stainless steel glass sintered body; Principle of work is that pressure acts on 316L stainless steel diaphragm, 316L stainless steel diaphragm is delivered to the pressure of impression on the Silicon pressure sensitive chip by silicone oil, the Silicon pressure sensitive chip is converted to electric signal with pressure, electric signal is delivered to temperature compensation plates by the pin of glass sintering body, and temperature compensation plates passes the signal along on the electric signal processing and amplifying plate 12 again.
Water in the soil enters the pressure chamber 5 from the infiltration mouthful natural pelelith permeable membrane 3 of 2 processes, and the effect of water pressure of process infiltration is on the 316L of Silicon pressure core body 7 stainless steel diaphragm 6, and Silicon pressure core body 7 is experienced pressure and is converted into electric signal output; The electric signal of Silicon pressure core body 7 outputs is transferred on the electric signal processing and amplifying plate 12, and the signal of the amplification circuit of electrical signal on the process electric signal processing and amplifying plate 12 amplifies and voltage transitions becomes electric current 4～20mA signal; 4～20mA current signal is transferred to the control sampler chamber through output cable 19.
Electric signal processing and amplifying plate 12 principle of work are that Voltage stabilizing module will be imported power supply and carry out the secondary voltage stabilizing, amplifying circuit is amplified to the volt magnitude voltage signals with the millivolt level signal of Silicon pressure core body, and the V/I change-over circuit is converted to voltage signal 4～20mA current signal of standard.
Claims (1)
1. permeable membrane holard pressure transducer is characterized in that comprising fixedly protective sleeve, natural pelelith permeable membrane, Silicon pressure core body, " O " RunddichtringO, compression fittings, pressure ring, mounting screw, electric signal processing and amplifying plate, housing, embedding silica gel, ring washer, " O " RunddichtringO, gland nut, pyrocondensation sheath, output cable; Wherein natural pelelith permeable membrane is installed in fixedly in the protective sleeve, fixedly protective sleeve and compression fittings are by being threaded, the Silicon pressure core body is installed in the compression fittings by the sealing of " O " RunddichtringO, pressure ring is connected with compression fittings by screw thread and compresses the Silicon pressure core body, electric signal processing and amplifying plate is fixed on the pressure ring with mounting screw, housing and compression fittings are connected into integral body by argon arc welding, this whole interior embedding silica gel; Output cable is connected with electric signal processing and amplifying plate, and ring washer and " O " RunddichtringO are enclosed within on the output cable, and fastening with gland nut, the pyrocondensation of pyrocondensation sheath is at the connecting portion of housing, gland nut and output cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202842441U CN201535706U (en) | 2009-12-03 | 2009-12-03 | Permeable membrane soil hydraulic pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202842441U CN201535706U (en) | 2009-12-03 | 2009-12-03 | Permeable membrane soil hydraulic pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535706U true CN201535706U (en) | 2010-07-28 |
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ID=42535485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202842441U Expired - Lifetime CN201535706U (en) | 2009-12-03 | 2009-12-03 | Permeable membrane soil hydraulic pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535706U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359835A (en) * | 2011-09-27 | 2012-02-22 | 中铁隧道装备制造有限公司 | Soil pressure and grouting pressure sensor for shield tunnelling machine |
| CN103674396A (en) * | 2013-12-06 | 2014-03-26 | 苏州科技学院 | Minitype dynamic infiltration water pressure sensor |
| CN105806896A (en) * | 2014-12-31 | 2016-07-27 | 青岛中科软件股份有限公司 | High-precision multifunctional soil sensor |
| CN110579512A (en) * | 2019-10-09 | 2019-12-17 | 清华大学 | manufacturing and calibration method of filter type soil moisture content sensor |
| CN110658136A (en) * | 2018-06-29 | 2020-01-07 | 罗伯特·博世有限公司 | Soil sensor |
| CN112097124A (en) * | 2020-08-31 | 2020-12-18 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Novel infrasonic wave sensor that structure is strengthened |
-
2009
- 2009-12-03 CN CN2009202842441U patent/CN201535706U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359835A (en) * | 2011-09-27 | 2012-02-22 | 中铁隧道装备制造有限公司 | Soil pressure and grouting pressure sensor for shield tunnelling machine |
| CN103674396A (en) * | 2013-12-06 | 2014-03-26 | 苏州科技学院 | Minitype dynamic infiltration water pressure sensor |
| CN105806896A (en) * | 2014-12-31 | 2016-07-27 | 青岛中科软件股份有限公司 | High-precision multifunctional soil sensor |
| CN110658136A (en) * | 2018-06-29 | 2020-01-07 | 罗伯特·博世有限公司 | Soil sensor |
| CN110579512A (en) * | 2019-10-09 | 2019-12-17 | 清华大学 | manufacturing and calibration method of filter type soil moisture content sensor |
| CN110579512B (en) * | 2019-10-09 | 2024-02-20 | 清华大学 | Manufacturing and calibrating method of filter type soil moisture sensor |
| CN112097124A (en) * | 2020-08-31 | 2020-12-18 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Novel infrasonic wave sensor that structure is strengthened |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100728 Effective date of abandoning: 20091203 |