CN2190297Y - Digital pressure tester - Google Patents
Digital pressure tester Download PDFInfo
- Publication number
- CN2190297Y CN2190297Y CN 93244718 CN93244718U CN2190297Y CN 2190297 Y CN2190297 Y CN 2190297Y CN 93244718 CN93244718 CN 93244718 CN 93244718 U CN93244718 U CN 93244718U CN 2190297 Y CN2190297 Y CN 2190297Y
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- CN
- China
- Prior art keywords
- pressure
- digital
- utility
- model
- displaying meter
- Prior art date
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- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a digital pressure tester, which is characterized in that a pressure quick joint (1) is used for taking the pressure signal of a measured point out; the pressure signal collected is converted into a digital signal via a pressure sensor and meter with digital display to be displayed on a display screen; a data is output by a printer. The pressure tester with the structure can avoid that the pressure test is placed in the field for a long term, consequently overcoming the defects, of easy freezing, easy loss, easy damage, difficult maintenance, etc., which are caused by that a pointer type mechanical pressure gauge is fixed on a point whose pressure is measured. Meanwhile, the utility model which records and takes datum quickly has accurate reading and the functions of storage, display and printing, and the utility model is suitable for the test of the pressure of oil wells, water wells, etc.
Description
The utility model relates to a kind of digital pressure tester, is applicable to the test of oil well, well equal pressure.
At present, widely used tensimeters such as oil well, well are pointer mechanical pressure gauge, are a kind of conventional instruments that is fixed on the pressure tap, easily freeze during open-air the use, easily lose, fragile, maintenance and school inspection workload be big, and show not directly perceived.
The purpose of this utility model is to overcome the defective of above-mentioned existing pointer mechanical pressure gauge, and a kind of digital pressure tester is provided.
The technical solution of the utility model is with pressure rapid-acting coupling the measured point pressure signal to be taken out, by pressure transducer and the digital displaying meter formed by reservoir, keyboard, display screen, printing interface etc., convert the pressure signal that collects to digital signal, be presented on the display screen, and by the printer interface output data.The pressure tester of this structure can avoid pressure tester to place the field for a long time, defective such as freeze, easily lose, be fragile, difficult in maintenance thereby overcome easily, and the admission data is rapid, and accuracy of reading also has storage, demonstration and printing function.
Below in conjunction with embodiment and accompanying drawing thereof technology contents of the present utility model is further described.
Fig. 1 is each big component distribution synoptic diagram of a kind of embodiment of the digital pressure tester of the utility model:
Fig. 2 is the structural representation of pressure rapid-acting coupling among Fig. 1 embodiment.
Fig. 3 is the circuit block diagram of a kind of embodiment of the utility model read out instrument.
Fig. 4 is the electrical schematic diagram of Fig. 3 embodiment.
By Fig. 1, Fig. 2, the digital pressure tester of the utility model comprises pressure rapid-acting coupling (1), pressure transducer (2) and digital displaying meter, the pressure signal output terminal of pressure rapid-acting coupling (1) (threeway signal output part among Fig. 2) connects pressure transducer, the signal output part of pressure transducer connects the signal input part of digital displaying meter, and digital displaying meter comprises reservoir (3), keyboard (4) and display screen (5).Keyboard (4) and display location are in the housing outside of digital displaying meter, and reservoir (3) is positioned at housing.Pressure rapid-acting coupling (1) is made of fixed interface (7), lower piston (8), upper piston (9), threeway (10), cock (11), the bottom joint of threeway (10) and fixed interface (7) are movably connected, when cock (11) when backspin moves, upper and lower piston moves down simultaneously.During use, fixed interface (7) is welded in advance (or screw connection etc.) on by pressure tap, threeway (10) bottom joint is inserted fixed interface (7) and changes 90 ° of angles, be stuck in opening position, finish the connection of pressure measurement, be marked with liquid in the threeway, when precession is descended in cock (11), make lower piston, upper piston moves down simultaneously, reach by the balance of measuring pressure and threeway cavity pressure, connect the pressure transducer in the threeway, pressure signal is presented at digital form on the screen (5) through digital displaying meter, and can be stored in the reservoir, get by the printer that connects by the printer interface (6) that digital displaying meter is set up.
Fig. 3, Fig. 4 reflect a kind of digital displaying meter circuit diagram with storage, demonstration, printout function.This digital displaying meter comprises: (pressure transducer), measurement amplifying circuit, analog to digital conversion circuit, single-chip microcomputer, data memory, keyboard display control circuit, keyboard, LCDs, parallel interface chip, printer and timing watch chip and power supply.The annexation of various circuit and detailed circuit constitute sees Fig. 3, Fig. 4.Pressure transducer is selected the YCB-20A strain pressure transducer for use, behind the measurement amplifying circuit of sensor output pressure signal via ICL7650 operational amplifier composition, gives analog to digital converter (ICL7135).Analog to digital converter adopts dynamic four binary-coded decimals output respectively by D
1～D
5Be used for specifying the gating of every BCD number to send.Analog to digital converter transformation result data are given single-chip microcomputer (80C31) by parallel interface (81C55).Single-chip microcomputer (80C31) passes through parallel interface (81C55) again and provides clock frequency to analog to digital conversion circuit (ICL7135).Clock circuit adopts the MC146818 integrated circuit, and it has calendar, clock, timing, programmable Timer is interrupted, square-wave generator, and 50 byte low-power consumption static RAM (SRAM)s can be provided, can with the single-chip microcomputer direct interface.The D of clock circuit (MC146818)
0-D
7Address/data bus and single-chip microcomputer (80C31) address/data bus is joined.Keyboard system adopts 2 * 4 switch matrix of forming.P
1.5, P
1.4Line as keyboard meets+5V P by resistance
1.0-P
1.3Alignment as keyboard.On the keyboard 8 key functions be test, search, print, store, demonstration, setting, sequence number increase, sequence number minimizing etc.Printer data is failed line D
0-D
7And parallel interface (81C55) PB mouth joins.Single-chip microcomputer (80C31) is sent print data by parallel interface (81C55) warp let-off printer.Produce needs for satisfying, can design different pressures and measure journey and precision, keyboard also can be provided with according to actual needs, makes tested spot pressure title and test duration and pressure data show simultaneously, store and print.Demarcation of the present utility model is identical with conventional pointer pressure.
The utility model and existing pointer Pressure gauge relatively have the following advantages: (1) pressure measurement data digital shows and stores, improved reliability and the accuracy of pressure measurement; (2) fixed interface only is equipped with in pressure measurement place, the workload of safeguarding the school inspection that has reduced manometric use number and brought thus; (3) survey multiple spot pressure by an instrument, improved the comparativity of integral pressure value. Therefore this pressure tester is that a kind of practicality is stronger, and the pressure tester device of superior performance is particularly useful for oil well, the test of pressure of well.
Claims (3)
1, a kind of digital pressure tester, it is characterized in that this pressure tester is made up of pressure rapid-acting coupling (1), pressure transducer (2) and digital displaying meter, the pressure signal output terminal of pressure rapid-acting coupling (1) connects pressure transducer, the signal output part of pressure transducer connects the signal input part of digital displaying meter, digital displaying meter comprises reservoir (3), keyboard (4) and display screen (5), keyboard and display location are in digital displaying meter housing outside, and reservoir (3) places in the housing.
2, digital pressure tester according to claim 1, it is characterized in that pressure rapid-acting coupling (1) is made of fixed interface (7), lower piston (8), upper piston (9), threeway (10), cock (11), the bottom joint of threeway (10) and fixed interface (7) are movably connected, when cock (11) backspin, upper and lower piston moves down simultaneously.
3, digital pressure tester according to claim 1 and 2 is characterized in that digital displaying meter, has set up printer interface (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244718 CN2190297Y (en) | 1993-11-15 | 1993-11-15 | Digital pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244718 CN2190297Y (en) | 1993-11-15 | 1993-11-15 | Digital pressure tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2190297Y true CN2190297Y (en) | 1995-02-22 |
Family
ID=33817864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93244718 Expired - Fee Related CN2190297Y (en) | 1993-11-15 | 1993-11-15 | Digital pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2190297Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513597A (en) * | 2013-08-29 | 2014-01-15 | 南京理工大学 | Pressure test storing device with trigger controller |
-
1993
- 1993-11-15 CN CN 93244718 patent/CN2190297Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513597A (en) * | 2013-08-29 | 2014-01-15 | 南京理工大学 | Pressure test storing device with trigger controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |