CN206891638U - A kind of online non-destructive pressure detector of portable hydraulic system - Google Patents
A kind of online non-destructive pressure detector of portable hydraulic system Download PDFInfo
- Publication number
- CN206891638U CN206891638U CN201720898062.8U CN201720898062U CN206891638U CN 206891638 U CN206891638 U CN 206891638U CN 201720898062 U CN201720898062 U CN 201720898062U CN 206891638 U CN206891638 U CN 206891638U
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- CN
- China
- Prior art keywords
- hydraulic system
- pressure detector
- wheatstone bridge
- online non
- portable hydraulic
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- 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.)
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Abstract
The utility model provides a kind of online non-destructive pressure detector of portable hydraulic system, is related to hydraulic fault detection technique field.A kind of online non-destructive pressure detector of portable hydraulic system, including host computer, data transmission system and several pressure detecting subsystems；Each pressure detecting subsystem includes preload adjustable buckle, Wheatstone bridge and voltage analog collecting device, and preload adjustable buckle is made up of resistance strain gage and low elasticity connect band, can be clamped on the outer surface of tested pipeline.The online non-destructive pressure detector of the portable hydraulic system can realize accurate detection, on-line checking, Non-Destructive Testing and the Site Detection to hydraulic system fault.
Description
Technical field
It the utility model is related to hydraulic fault detection technique field, more particularly to a kind of portable hydraulic system is lossless online
Pressure detecting instrument.
Background technology
Hydraulic system fault is because trouble point is hidden, causality is complicated, invalid cost relatively disperses and easily by random factor
Influence, increase fault diagnosis and the difficulty of detection.Flowing feelings of the working solution in element and pipeline particularly in hydraulic system
Condition, the external world are difficult to recognize, so the diagnosis, analysis to hydraulic system fault bring more difficulty.Current hydraulic pressure system
System fault detect uses hydraulic pressure measuring instrument, but is opened using hydraulic pressure measuring instrument needs on fluid pressure line and take pressure measurement
Mouthful, this just have impact on the convenience of measurement pressure and the alternative at pressure measurement position.
Utility model content
The defects of for prior art, the utility model provide a kind of portable hydraulic system online non-destructive pressure detection
Instrument, by changing the alternative at hydraulic pressure pressure measurement position, realize accurate detection to hydraulic system fault, on-line checking, lossless
Detection and Site Detection.
A kind of online non-destructive pressure detector of portable hydraulic system includes host computer, data transmission system and several pressures
Power detects subsystem；Each pressure detecting subsystem includes preload adjustable buckle, Wheatstone bridge and voltage analog
Measure collecting device；The preload adjustable buckle is clamped on the outer surface of tested pipeline, and its structure is with quick-release opening
Loop configuration, a semi-ring of loop configuration is low elasticity connect band, and quick-release opening is located at the middle part of low elasticity connect band, quick-release
Opening is provided with prefastening torque bolt, and another semi-ring of loop configuration is resistance strain gage；The pin of the resistance strain gage
It is connected into a bridge arm of Wheatstone bridge, a resistance as Wheatstone bridge；Wheatstone bridge passes through wire and voltage
The input of analog acquisition equipment is connected；The output of voltage analog collecting device in each pressure detecting subsystem
End is connected with the input of data transmission system, forms distributed frame, and the output end of data transmission system is connected with host computer.
Preferably, the Wheatstone bridge also includes a temperature-compensating foil gauge and two fixed resistances, the resistance
Foil gauge and temperature-compensating foil gauge are a bridge arm, and two fixed resistances are another bridge arm.
Preferably, the data transmission system includes Photoelectric isolated converter and serial converter, Photoelectric isolated converter
Input be connected with the output end of the voltage analog collecting device, the output end of Photoelectric isolated converter is changed with serial ports
The input of device is connected, and the output end of serial converter is connected with host computer.
Preferably, the host computer is PC or notebook computer.
As shown from the above technical solution, the beneficial effects of the utility model are：One kind provided by the utility model is portable
The online non-destructive pressure detector of formula hydraulic system can realize accurate detection, on-line checking, the lossless inspection to hydraulic system fault
Survey and Site Detection.Tested pipeline small strain for occurring under fluid pressure effect, can by resistance strain gage precise acquisition,
Change in resistance corresponding to small strain accurately can be changed into by voltage signal using Wheatstone bridge, realize accurate detection.
The trouble point for the hydraulic system that can be directed in the course of work carries out pressure detecting to each pipeline, without shutting down, realizes online
Detection.During pressure detecting, it is not necessary to the processing such as any dismounting installation are done to each pipeline in hydraulic system, it is only necessary in mesh
It is the detection that hydraulic fault can be achieved that cursor position, which bundlees a preload adjustable buckle, improves detection efficiency, realizes lossless inspection
Survey.Detection device uses distributed attachment structure, can be convenient to carry out detection work under circumstances with telecommunication,
Realize Site Detection.
Brief description of the drawings
Fig. 1 is a kind of structure for the online non-destructive pressure detector of portable hydraulic system that the utility model embodiment provides
Block diagram；
Fig. 2 is the structural representation for the preload adjustable buckle that the utility model embodiment provides；
Fig. 3 is the connected mode schematic diagram for the Wheatstone bridge that the utility model embodiment provides.
In figure：1st, quick-release opening；2nd, prefastening torque bolt；3rd, it is tested pipeline；4th, low elasticity connect band；5th, resistance-strain
Piece.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
A kind of online non-destructive pressure detector of portable hydraulic system, as shown in figure 1, including host computer, data transmission system
System and several pressure detecting subsystems, each pressure detecting subsystem include preload adjustable buckle, Wheatstone bridge and
Voltage analog collecting device.The preload adjustable buckle is clamped on the outer surface of tested pipeline 3, its structure such as Fig. 2 institutes
Show, for a loop configuration for carrying quick-release opening 1, a semi-ring of loop configuration is low elasticity connect band 4, quick-release opening 1
The middle part of low elasticity connect band 4 is located at, quick-release opening 1 is provided with prefastening torque bolt 2, and another semi-ring is resistance strain gage 5.
The pin of the resistance strain gage 5 is connected into a bridge arm of Wheatstone bridge, described as a resistance of Wheatstone bridge
Wheatstone bridge also includes a temperature-compensating foil gauge and two fixed resistances.The connected mode of Wheatstone bridge, such as Fig. 3 institutes
Show, R1、R2Two arm resistances are resistance strain gage, R3、R4Two arm resistances are fixed resistance, UiFor input voltage, UoFor output
Voltage, output voltage UoVoltage analog collecting device is introduced by wire.In two resistance strain gages, a piece of foil gauge is adjustable
Resistance strain gage 5 on pretightning force buckle, is connected in pipeline circumference, and pipeline strain value is measured as resistance strain gage 5；It is a piece of
Foil gauge is temperature-compensating foil gauge, is connected on pipeline axial direction, for change in resistance caused by compensation temperature.Resistance-strain
Piece 5 gathers tested pipeline caused small strain under fluid pressure effect, and Wheatstone bridge is by the resistance corresponding to small strain
Value changes change into voltage signal, the voltage signal of voltage analog collecting device collection Wheatstone bridge output, and will simulate
Signal is converted into data signal.The data transmission system includes Photoelectric isolated converter and serial converter, and Phototube Coupling turns
The input of parallel operation is connected with the output end of the voltage analog collecting device of each pressure detecting subsystem, Phototube Coupling conversion
The output end of device is connected with the input of serial converter, and the output end of serial converter is connected with host computer, forms a kind of point
Cloth hydraulic fault detects structure.Resistance strain gage and temperature-compensating foil gauge use model BX120-30AA in the present embodiment
Foil gage, voltage analog collecting device carries out voltage analog using the road Analog input mModule of DAM-3058R types 8
Collection, data transmission system are turned using the general RS232/RS485 Photoelectric isolated converters of DAM-3210 types and DT-5002A types USB
9 pin RS232 serial converters carry out data transmission, and host computer is carried out at data using PC or the notebook computer being convenient for carrying
Reason.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, either to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model right and want
Seek limited range.
Claims (4)
- A kind of 1. online non-destructive pressure detector of portable hydraulic system, it is characterised in that：Including host computer, data transmission system With several pressure detecting subsystems；Each pressure detecting subsystem includes preload adjustable buckle, Wheatstone bridge With voltage analog collecting device；The preload adjustable buckle is clamped on the outer surface of tested pipeline (3), and its structure is band There is the loop configuration of quick-release opening (1), a semi-ring of loop configuration is low elasticity connect band (4), and quick-release opening (1) is located at low The middle part of elastic connecting strip (4), quick-release opening (1) are provided with prefastening torque bolt (2), and another semi-ring of loop configuration is electricity Hinder foil gauge (5)；The pin of the resistance strain gage (5) is connected into a bridge arm of Wheatstone bridge, as Wheatstone bridge A resistance；Wheatstone bridge is connected by wire with the input of voltage analog collecting device；Each pressure inspection The output end of voltage analog collecting device surveyed in subsystem is connected with the input of data transmission system, forms distributed knot Structure, the output end of data transmission system are connected with host computer.
- A kind of 2. online non-destructive pressure detector of portable hydraulic system according to claim 1, it is characterised in that：It is described Data transmission system includes Photoelectric isolated converter and serial converter, the input of Photoelectric isolated converter and the voltage-mode The output end of analog quantity collecting device is connected, and the output end of Photoelectric isolated converter is connected with the input of serial ports converter, serial ports The output end of converter is connected with host computer.
- A kind of 3. online non-destructive pressure detector of portable hydraulic system according to claim 1, it is characterised in that：It is described Wheatstone bridge also includes a temperature-compensating foil gauge and two fixed resistances, the resistance strain gage (5) and temperature-compensating Foil gauge is a bridge arm, and two fixed resistances are another bridge arm.
- A kind of 4. online non-destructive pressure detector of portable hydraulic system according to claim 1, it is characterised in that：It is described Host computer is PC or notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898062.8U CN206891638U (en) | 2017-07-24 | 2017-07-24 | A kind of online non-destructive pressure detector of portable hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898062.8U CN206891638U (en) | 2017-07-24 | 2017-07-24 | A kind of online non-destructive pressure detector of portable hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206891638U true CN206891638U (en) | 2018-01-16 |
Family
ID=61297381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720898062.8U Expired - Fee Related CN206891638U (en) | 2017-07-24 | 2017-07-24 | A kind of online non-destructive pressure detector of portable hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206891638U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489888A (en) * | 2018-12-24 | 2019-03-19 | 江苏徐工工程机械研究院有限公司 | A kind of ring structure connection tools for bolts ' pretension force detection system |
| CN110864798A (en) * | 2019-11-18 | 2020-03-06 | 中国矿业大学(北京) | Temperature correction device and micro-vibration measurement system |
-
2017
- 2017-07-24 CN CN201720898062.8U patent/CN206891638U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489888A (en) * | 2018-12-24 | 2019-03-19 | 江苏徐工工程机械研究院有限公司 | A kind of ring structure connection tools for bolts ' pretension force detection system |
| CN109489888B (en) * | 2018-12-24 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Annular structure connecting bolt pretightening force detecting system |
| CN110864798A (en) * | 2019-11-18 | 2020-03-06 | 中国矿业大学(北京) | Temperature correction device and micro-vibration measurement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20180724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |