CN104266724A - Anti-corrosive type ultrasonic liquid level measuring sensor - Google Patents
Anti-corrosive type ultrasonic liquid level measuring sensor Download PDFInfo
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- CN104266724A CN104266724A CN201410493095.5A CN201410493095A CN104266724A CN 104266724 A CN104266724 A CN 104266724A CN 201410493095 A CN201410493095 A CN 201410493095A CN 104266724 A CN104266724 A CN 104266724A
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- housing
- ultrasonic
- anticorrosive
- sensing element
- connector
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses an anti-corrosive type ultrasonic liquid level measuring sensor. The anti-corrosive type ultrasonic liquid level measuring sensor comprises a housing, a sensing element arranged in the housing, wherein the housing is a ceramic housing; a connecting port is arranged in the tail end of the housing; an aviation connector is arranged at the connecting port and is connected with a sensing element through a connecting guide line; sealant is poured in the housing. According to the anti-corrosive type ultrasonic liquid level measuring sensor, the housing is the ceramic housing and is packaged through the sealant to form an integrated structure; the aviation connector is used for outputting, and therefore, the sealing performance and corrosion resistance of the sensor are improved.
Description
Technical field
The present invention relates to a kind of anticorrosive ultrasonic BL.
Background technology
Gas Jie ultrasonic sensor is the aerial propagation of ultrasound wave, utilizes the acoustic impedance of different medium and the difference of air-borne sound impedance, can produce catadioptric characteristic, can be used for making keeps away barrier, level sensing, Level measurement, distance detects, the various utilizations such as location.
Existing ultrasonic sensor is generally with common plastics or metal shell.Can not work long hours under the environment having corrosion.Special under the environment of strong acid and strong base, if with common plastics or metal shell, the life-span is all no more than 3 months.Therefore, in the urgent need to a kind of can the ultrasonic sensor of normal table work in particular circumstances.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of anticorrosive ultrasonic BL.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of anticorrosive ultrasonic BL, comprise housing and be arranged on the sensing element in housing, described housing is ceramic shell, described shell end is provided with connector, this connector place is provided with Aviation Connector, this Aviation Connector is connected with sensing element by connecting wire, embedding sealed colloid in described housing.
Described sealed colloid is epoxy resin.
Described sensing element comprises piezoelectric chip, planar radiation plate, reflection damping sheet.
Front electrode and the single resistant material with certain rigidity of described piezoelectric chip, adopt cast, pressure injection or bonding mode to make the planar radiation plate of integral type.
The rear electrode of described piezoelectric chip is stained with the reflection damping sheet keeping certain interval with inner walls.
Be provided with dividing plate in described housing, housing be separated into two independently sealed cavities.
The invention has the beneficial effects as follows: a kind of anticorrosive ultrasonic BL, comprise housing and be arranged on the sensing element in housing, described housing is ceramic shell, described shell end is provided with connector, this connector place is provided with Aviation Connector, this Aviation Connector is connected with sensing element by connecting wire, embedding sealed colloid in described housing, anticorrosive ultrasonic BL of the present invention adopts pottery as shell, and be packaged into integral structure by sealed colloid, employing Aviation Connector exports, ensure that sensor has good sealing property and decay resistance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Embodiment
With reference to Fig. 1, Fig. 1 is the structural representation of the present invention's specific embodiment, as shown in the figure, a kind of anticorrosive ultrasonic BL, the sensing element comprising housing 1 and be arranged in housing 1, described housing 1 is ceramic shell, described housing 1 end is provided with connector, this connector place is provided with Aviation Connector 12, and this Aviation Connector 12 is connected with sensing element by connecting wire, and in described housing 1, embedding has by sealed colloids such as epoxy resin.
As shown in the figure, described sensing element comprises piezoelectric chip 4, planar radiation plate 2, reflection damping sheet 6, front electrode 3 and the single resistant material with certain rigidity of described piezoelectric chip 4, adopt cast, pressure injection or bonding mode to make the planar radiation plate of integral type, the rear electrode 5 of described piezoelectric chip 4 is stained with the reflection damping sheet 6 keeping certain interval with housing 1 inwall.
Planar radiation plate 2 is also the node of electrode 3, piezoelectric chip 4 and rear electrode 5 before supporting simultaneously, one is made with front electrode adhesion, its material of planar radiation plate can for any one can with the material of the rigid, corrosion resistant of front electrode secure bond, as plastics, pottery, epoxy resin.The reflection damping sheet 6 that rubberite is made, sticks to above rear electrode 5.Material and the similar dividing plate 8 of planar radiation plate, will be divided into two independently sealed cavities in housing, cast thickness is 10 ~ 20mm.Abovementioned technology is conducive to the conversion efficiency and the sensitivity that improve sensor.Prime amplifier 9, be fixed on the dividing plate 8 that is made up of epoxy resin, the echoed signal for being exported by sensor delivers to indicating instrument after being amplified to sufficient intensity again, and this way is very necessary when sensor distance indicating instrument is far away.
Can see in the accompanying drawings, whole shell and planar radiation plate are all made up of the material of acid-alkali-corrosive-resisting, and ceramic shell 1 inwall and planar radiation plate 2 contact site have all carried out roughening process, to increase the bond strength with planar radiation plate.Totally enclosed structure makes it to have good antiseptic property.Can in severe working environment long-term normal use.Because front electrode 3 is put into wherein when planar radiation plate 2 is shaped, harden with planar radiation and to put the palms together before one point closely reliable, improve conversion efficiency.The optimum thickness of planar radiation plate can between 8.5 ~ 33.0mm, and reflection damping sheet 6 keeps certain interval with outer casing inner wall, and this gap can be 0.1 ~ 1.5mm, and the light rubber filling of available flexibility, also can not filling.
Anticorrosive ultrasonic BL of the present invention adopts pottery as shell, and is packaged into integral structure by sealed colloid, adopts Aviation Connector to export, ensures that sensor has good sealing property and decay resistance.
Above better enforcement of the present invention is illustrated; certainly; the present invention can also adopt form different from the embodiment described above; the equivalent conversion that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or change accordingly, all should belong in protection scope of the present invention.
Claims (6)
1. an anticorrosive ultrasonic BL, it is characterized in that: the sensing element comprising housing (1) and be arranged in housing (1), described housing (1) is ceramic shell, described housing (1) end is provided with connector, this connector place is provided with Aviation Connector (12), this Aviation Connector (12) is connected with sensing element by connecting wire, the interior embedding sealed colloid of described housing (1).
2. a kind of anticorrosive ultrasonic BL according to claim 1, is characterized in that: described sealed colloid is epoxy resin.
3. a kind of anticorrosive ultrasonic BL according to claim 1, is characterized in that: described sensing element comprises piezoelectric chip (4), planar radiation plate (2), reflection damping sheet (6).
4. a kind of anticorrosive ultrasonic BL according to claim 3, it is characterized in that: front electrode (3) and the single resistant material with certain rigidity of described piezoelectric chip (4), adopt cast, pressure injection or bonding mode to make the planar radiation plate of integral type.
5. a kind of anticorrosive ultrasonic BL according to claim 4, is characterized in that: the rear electrode (5) of described piezoelectric chip (4) is stained with the reflection damping sheet (6) keeping certain interval with housing (1) inwall.
6. a kind of anticorrosive ultrasonic BL according to claim 5, is characterized in that: be provided with dividing plate (8) in described housing (1), housing (1) is separated into two independently sealed cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493095.5A CN104266724A (en) | 2014-09-24 | 2014-09-24 | Anti-corrosive type ultrasonic liquid level measuring sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493095.5A CN104266724A (en) | 2014-09-24 | 2014-09-24 | Anti-corrosive type ultrasonic liquid level measuring sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104266724A true CN104266724A (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410493095.5A Pending CN104266724A (en) | 2014-09-24 | 2014-09-24 | Anti-corrosive type ultrasonic liquid level measuring sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104266724A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823531A (en) * | 2016-05-20 | 2016-08-03 | 南昌航空大学 | Liquid level indicator applicable to corrosive liquid |
| CN113984133A (en) * | 2021-10-28 | 2022-01-28 | 北京斯克维思仪表有限公司 | Magnetostrictive liquid level meter |
-
2014
- 2014-09-24 CN CN201410493095.5A patent/CN104266724A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823531A (en) * | 2016-05-20 | 2016-08-03 | 南昌航空大学 | Liquid level indicator applicable to corrosive liquid |
| CN113984133A (en) * | 2021-10-28 | 2022-01-28 | 北京斯克维思仪表有限公司 | Magnetostrictive liquid level meter |
| CN113984133B (en) * | 2021-10-28 | 2023-01-24 | 北京斯克维思仪表有限公司 | Magnetostrictive liquid level meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |