CN202420751U - Piezoelectric type pressure sensor for pipes - Google Patents
Piezoelectric type pressure sensor for pipes Download PDFInfo
- Publication number
- CN202420751U CN202420751U CN2011205584400U CN201120558440U CN202420751U CN 202420751 U CN202420751 U CN 202420751U CN 2011205584400 U CN2011205584400 U CN 2011205584400U CN 201120558440 U CN201120558440 U CN 201120558440U CN 202420751 U CN202420751 U CN 202420751U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- press block
- piezoelectric ceramic
- boss
- piezoelectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a pressure sensor, in particular to a piezoelectric type pressure sensor for pipes. The piezoelectric type pressure sensor for pipes comprises an upper press block and a lower press block, wherein the upper press block and the lower press block are made of conductive materials. The piezoelectric type pressure sensor for pipes is characterized in that an upper boss and a lower boss which are opposite to each other are respectively arranged on opposite surfaces of the upper press block and the lower press block, an upper piezoelectric ceramic plate and a lower piezoelectric ceramic plate are respectively fixed on the upper boss and the lower boss, an upper flexible conductive plate and a lower flexible conductive plate are further respectively fixed on the upper piezoelectric ceramic plate and the lower piezoelectric ceramic plate, two ends of the upper press block and two ends of the lower press block are respectively fixed to supporting blocks by bolts and nuts, the supporting blocks are located between the upper press block and the lower press block, and the upper flexible conductive plate and the lower flexible conductive plate are spaced by a preset distance. The piezoelectric type pressure sensor for pipes can be used for measuring pressure of the pipes which have different diameters and are made of various materials by adjusting the heights of the supporting blocks, and is high in sensitivity, simple in structure and convenient to use.
Description
Technical field
The present invention relates to a kind of pressure transducer.More specifically, the present invention relates to a kind of pipeline piezoelectric pressure indicator.
Background technology
Piezoelectric transducer is based on the dynamo-electric change type sensor of piezoelectric effect.Because its bandwidth, highly sensitive, signal to noise ratio (S/N ratio) is high, simple in structure, reliable operation, in light weight, its application is extensive more, comprising the accurate measurement that is used for pipeline pressure.Chinese patent CN101644615 B discloses a kind of tube diameter variable clamping pressure sensor; It is made up of sensor main body, holding ring, sensitive body, pedestal, clamp device, signal output apparatus six parts; The principle that the device of described induction pressure utilizes electric charge to superpose; On the high-pressure oil pipe between diesel motor injection pump and the nozzle, when engine ignition burnt, oil pipe produced small expansion to sensor under the effect of hydraulic oil pulse with certain pretightning force clip; Thereby pressing sensing device sensitive body produces electric charge output, and its output charge supplies the secondary instrument collection analysis after special differential charge amplifier conversion is amplified.Though this pressure transducer can be clamped on the external diameter of tested pipeline pipeline pressure is measured; But its structure is quite complicated; And need use tested pipeline as an electrode; Therefore require tested pipeline to be processed by conductor such as metal, the pipeline of processing for nonmetal electrically non-conductive material then can not use.
Summary of the invention
The object of the present invention is to provide a kind of pipeline piezoelectric pressure indicator that is held on outer diameter tube in order to measuring channel pressure; This pressure transducer can be used to accurately measure the pressure of various pipelines; And pipeline not only is confined to processed by conductive material, and can use equally for the pipeline of being processed by electrically non-conductive material.
For realizing above-mentioned purpose; Pipeline piezoelectric pressure indicator among the present invention comprises the upper holder block that conductive material processes, the lower lock block that conductive material is processed; It is characterized in that; On the opposite face of described upper holder block, lower lock block, have relative upper and lower boss respectively, be fixed with upper and lower piezoelectric ceramic piece respectively on the said upper and lower boss, on said upper and lower piezoelectric ceramic piece, also be fixed with upper and lower compliant conductive sheet respectively; The two ends of said upper and lower briquetting are adopted bolt, nut and the back-up block between said upper and lower briquetting to fix respectively and are made said upper and lower compliant conductive sheet at a distance of a preset distance.
In a kind of embodiment, on said upper holder block or lower lock block, be connected with electrode; On said upper and lower compliant conductive sheet, be connected with electrode respectively.
In a kind of embodiment, said upper holder block, lower lock block are processed by metal or metal alloy, preferably adopt aluminium alloy or stainless steel to process.
In a kind of embodiment, said compliant conductive sheet adopts metal or metal alloy to process, and preferably adopts copper, aluminium or stainless steel to process.
In a kind of embodiment, said piezoelectric ceramic piece is bonded on the said boss through resin glue, and said compliant conductive sheet is bonded on the said piezoelectric ceramic piece through resin glue.
In a kind of embodiment, said resin glue is an electroconductive resin glue.
In further embodiment, said conducting resinl is the epoxide-resin glue that is mixed with silver powder.
Pipeline piezoelectric pressure indicator among the present invention can be used for the pressure survey of the various caliber pipelines that various materials process through the height of adjustable support piece, and is highly sensitive, and simple in structure, easy to use.
Description of drawings
Fig. 1 is the front elevational schematic of a kind of pipeline piezoelectric pressure indicator of the present invention.
Embodiment
For more being expressly understood the present invention, combine accompanying drawing that the present invention is described further at present.Should be appreciated that the embodiment of the present invention described in the accompanying drawing is merely explanation usefulness of the present invention, is not construed as limiting the invention.Protection scope of the present invention is limited appending claims.
Should be appreciated that accompanying drawing of the present invention is merely explanation usefulness of the present invention, be not in proportion with the true form accurate Drawing, so these accompanying drawings should not become limitation of the present invention.
Fig. 1 shows the front elevational schematic of a kind of pipeline piezoelectric pressure indicator of the present invention.As shown in Figure 1, pipeline piezoelectric pressure indicator 100 comprises upper holder block 10, lower lock block 20.Upper holder block 10, lower lock block 20 two ends are connected through bolt 50, nut 60 and back-up block 30 respectively.
Upper holder block 10 has boss 130 respectively with lower lock block 20 relative one side both sides.Piezoelectric ceramic piece 120 is fixed on the boss 130, is bonded on the boss 130 like the mode that adopts bonding.Because therefore convex platform will, should be conducting between piezoelectric ceramic piece 120 and the boss 130 as an electrode of piezoelectric ceramic piece 120.For example, when adopting bonding mode fixedly, can adopt resin glue when bonded thing is conducted.The preferred electroconductive resin glue that adopts bonds, as but be not limited to mix the epoxide-resin glue of silver powder.
On piezoelectric ceramic piece 120, also be fixed with compliant conductive sheet 110, the compliant conductive sheet is meant can stress deformation and institute's holding capacity passed to the conducting strip of said piezoelectric ceramic piece.The compliant conductive sheet can adopt metal or metal alloy to process, and processes as adopting copper, aluminium or stainless steel.
Similarly; Also have boss 230 in the one side both sides relatively at lower lock block 20 and upper holder block 10; And fixing on boss 230 (as through the conducting resinl bonding) has piezoelectric ceramic piece 220; Fixing on piezoelectric ceramic piece 220 (as through resin glue, or preferably adopting the electroconductive resin glue bond) has compliant conductive sheet 210.
Through the height of adjustment back-up block 30, and adopt bolt 50 to pass back-up block 30 at the two ends of upper and lower briquetting 10,20 and cooperates upper and lower briquetting 10,20 is fixing and make said upper and lower compliant conductive sheet 110,210 preset distance apart with nut 60.In the time will measuring the pipeline pressure of certain external diameter, this preset distance should be essentially the outside dimension of pipeline.Therefore, if measure the pipeline pressure of different tube diameters, the back-up block that only need be replaced with corresponding size gets final product.
Correspondingly, can on upper holder block 10 or lower lock block 20, electrode 80 be set, electrode 111,211 be set respectively on upper and lower compliant conductive sheet 110,210 to realize the output of pressure signal.
The purpose that boss 130,230 is set is to reserve corresponding space for the distortion of piezoelectric ceramic piece.
During measuring channel pressure, earlier pipeline piezoelectric pressure indicator 100 of the present invention is stuck on the external diameter of tested pipeline (not shown), and with bolt 50 pretensions.At this moment upper and lower compliant conductive sheet 110,210 contacts with the external diameter of tested pipeline respectively.Flow through when pipeline has fluid, will produce pressure last piezoelectric ceramic piece 120 and lower piezoelectric ceramic ring 220.Because the piezoelectric effect of piezoceramic material; The electric charge that produces just can be through being connected the electrode 80 and electrode 111,211 outputs that are connected on the upper and lower compliant conductive sheet 110,210 on the upper holder block 10; Be connected to external meters, realize the measurement of pipeline pressure.
Because upper and lower compliant conductive layer 110,210 is for conductive material and can be used for connection electrode, so the pipeline piezoelectric pressure indicator 100 among the present invention can use the pipeline of processing with various materials, is not limited only to metallic conduit.
Based on description to the preferred embodiment for the present invention; Should be clear; Be not limited only to the specific detail set forth in the top instructions the present invention that appending claims limited, what do not break away from aim of the present invention or scope possibly reach the object of the invention equally to many conspicuous changes of the present invention.
Claims (6)
1. pipeline piezoelectric pressure indicator; Comprise the upper holder block that conductive material processes, the lower lock block that conductive material is processed; It is characterized in that; On the opposite face of described upper holder block, lower lock block, have relative upper and lower boss respectively, be fixed with upper and lower piezoelectric ceramic piece respectively on the said upper and lower boss, on said upper and lower piezoelectric ceramic piece, also be fixed with upper and lower compliant conductive sheet respectively; The two ends of said upper and lower briquetting are adopted bolt, nut and the back-up block between said upper and lower briquetting to fix respectively and are made said upper and lower compliant conductive sheet at a distance of a preset distance.
2. pipeline piezoelectric pressure indicator according to claim 1 is characterized in that, on said upper holder block or lower lock block, is connected with electrode; On said upper and lower compliant conductive sheet, be connected with electrode.
3. pipeline piezoelectric pressure indicator according to claim 2 is characterized in that said upper holder block, lower lock block are processed by metal or metal alloy.
4. pipeline piezoelectric pressure indicator according to claim 3 is characterized in that, said compliant conductive sheet adopts copper, aluminium or stainless steel to process.
5. according to each described pipeline piezoelectric pressure indicator of claim 1-4, it is characterized in that said piezoelectric ceramic piece is bonded on the said boss through resin glue, said compliant conductive sheet is bonded on the said piezoelectric ceramic piece through resin glue.
6. pipeline piezoelectric pressure indicator according to claim 5 is characterized in that, said resin glue is an electroconductive resin glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205584400U CN202420751U (en) | 2011-12-28 | 2011-12-28 | Piezoelectric type pressure sensor for pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205584400U CN202420751U (en) | 2011-12-28 | 2011-12-28 | Piezoelectric type pressure sensor for pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420751U true CN202420751U (en) | 2012-09-05 |
Family
ID=46745506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205584400U Expired - Lifetime CN202420751U (en) | 2011-12-28 | 2011-12-28 | Piezoelectric type pressure sensor for pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202420751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564679A (en) * | 2011-12-28 | 2012-07-11 | 芮国林 | Pipeline piezoelectric type pressure sensor |
-
2011
- 2011-12-28 CN CN2011205584400U patent/CN202420751U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564679A (en) * | 2011-12-28 | 2012-07-11 | 芮国林 | Pipeline piezoelectric type pressure sensor |
| CN102564679B (en) * | 2011-12-28 | 2014-03-19 | 芮国林 | Pipeline piezoelectric type pressure sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107449661B (en) | Rectangular strip thin plate type test piece tensile test clamp | |
| CN202420751U (en) | Piezoelectric type pressure sensor for pipes | |
| CN105445568A (en) | Piezoelectric film electromechanical characteristic testing device | |
| CN105043664A (en) | Calibration device for special high-temperature force measurement sensor | |
| CN112945156A (en) | Testing device and system based on ultrasonic online wall thickness monitoring | |
| CN102564679B (en) | Pipeline piezoelectric type pressure sensor | |
| CN205138756U (en) | Wind -tunnel wind pressure monitoring pipe way frequency response correcting device | |
| CN202393546U (en) | Piezoelectric sensor system inside pipeline | |
| CN100565092C (en) | Double-shaft radial extensometer under the high hydraulic environment | |
| CN202420752U (en) | Pipeline piezoelectric pressure sensor | |
| CN104155049A (en) | Apparatus for detecting pressure of fluid in a flexible pipe | |
| CN1587943A (en) | Nondestructive pressure testing method and its device based on Rayleigh surface wave | |
| CN102901602A (en) | Hall type oil and gas pressure sensor | |
| CN102410903A (en) | Piezoelectric type pressure sensor for pipes | |
| CN204944745U (en) | Special high-temperature force sensor demarcating device | |
| CN208568679U (en) | A kind of mechanical fitting mass detecting instrument | |
| CN214251861U (en) | Dynamic three-point bending test system for brittle material | |
| CN205246038U (en) | Tubular product external diameter measuring tool | |
| CN202853827U (en) | Hall oil gas pressure sensor | |
| CN206248462U (en) | Anchorage, fixture and connector static load anchoring test overall strain measurement apparatus | |
| CN207379978U (en) | A kind of conductivity meter based on impulse eddy current | |
| CN103134649A (en) | Belleville spring performance detector | |
| CN106644258B (en) | A kind of shock wave free field survey laminated structure for shock tube calibration | |
| CN202708602U (en) | Leakage detecting device for internal oil-gas pipeline | |
| CN202403881U (en) | Butterfly spring performance detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20140319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20140319 |