CN102454374A - Digital display drilling fluid densitometer - Google Patents
Digital display drilling fluid densitometer Download PDFInfo
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- CN102454374A CN102454374A CN2010105165426A CN201010516542A CN102454374A CN 102454374 A CN102454374 A CN 102454374A CN 2010105165426 A CN2010105165426 A CN 2010105165426A CN 201010516542 A CN201010516542 A CN 201010516542A CN 102454374 A CN102454374 A CN 102454374A
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- drilling fluid
- microprocessor
- digital display
- fluid density
- pressure signal
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Abstract
The invention relates to a digital display drilling fluid densitometer, and mainly solves the problems that the reading of the drilling fluid densitometer is needed to be manually operated and is subjected to large environmental influence in the prior art. The drilling fluid densitometer is characterized by comprising a sample container, a pressure sensor, a central controller, a digital display screen and a matrix keyboard, wherein the sample container is vertically fixed on a densitometer shell; the pressure sensor is positioned at the bottom of the sample container; a generated pressure signal is transmitted to the central processor through a signal wire; the central processor comprises an analog/digital (A/D) reference power supply, an A/D conversion module, an electrically erasable programmable read only memory (EEPROM) and a microprocessor; the A/D conversion module receives a pressure signal from a pressure signal input end, converts the pressure signal and inputs the converted signal into the microprocessor; and the microprocessor reads a conversion result under the action of a preset program and calculates and outputs the corresponding drilling fluid density value. The densitometer can directly display drilling fluid density and has the characteristics of simple structure, measuring accuracy and freedom from environmental influence.
Description
Technical field
The present invention relates to carry out the device that drilling fluid density is measured on a kind of oil field, specifically, relate to a kind of drilling fluid density measurement mechanism with digital Presentation Function.
Background technology
In drilling engineering now, adopt bydrostatic balance that mud density is measured mostly; But application through the long period; Find that there is following technical problem in this densometer: at first be manually to stir vernier to carry out reading; When under the more dim situation of the bigger or light of sleet dust storm, some extraneous factors can directly have influence on measurement result; In addition, this method not only wastes time and energy, and in winter, temperature is very low, freezes than being easier to, and is very inconvenient aspect cleaning and use.
Summary of the invention
The technical problem of mentioning in order to solve in the background technology; The present invention provides a kind of digital display type drilling fluid density meter; This kind digital display type drilling fluid density meter is simple in structure, easy to use, and low in energy consumption, volume urinates in carrying, and most importantly can obtain the digitized measurement result more intuitively; Do not receive environment and boisterous the influence, can be quick and precisely, save time, the labour-saving measures mud balance.
Technical scheme of the present invention is: this kind digital display type drilling fluid density meter comprises densometer housing, shuttle, pressure sensor, central controller, digital display screen and a cover matrix keyboard.Wherein, said shuttle vertical fixing is on the densometer housing, and pressure sensor then is positioned at the bottom of shuttle, and the pressure signal that pressure sensor produces transfers to the pressure signal input of the central controller that is positioned at the densometer housing through holding wire.Said central controller comprises A/D reference power supply, A/D modular converter, eeprom memory and microprocessor; Said A/D reference power supply provides reference power supply for the A/D modular converter; Said A/D modular converter receives the pressure signal that comes from the aforementioned pressure signal input part; Conversion back input microprocessor, said microprocessor read transformation result and are calculated to be corresponding drilling fluid density value output under the effect of initialize program; Aforementioned drilling fluid density value by microprocessor output exports digital display screen to through signal cable and shows that said microprocessor is a single-chip microcomputer.In addition, in special time period, keeping measured value, can show that signal output part and digital display screen are connected with a latch in the drilling fluid density value of said microprocessor.
The present invention has following beneficial effect: this kind digital display type drilling fluid density meter adopts single-chip microcomputer to control whole system operation as processor; Front end is employed in the mode of the bottom arrangement pressure sensor of shuttle, is pressure signal with the weight signal that is contained in the drilling fluid to be measured in the shuttle, converts the ultra-weak electronic signal of millivolt level to; This signal of telecommunication passes through A/D converter; Be converted into the discernible semaphore of single-chip microcomputer, single-chip microcomputer reads transformation result and through computing, directly utilizes the formula of asking for of density to ask under the control of plug-in afterwards; Change into corresponding density value, show through digitron display screen again.This digital display type densometer can adapt to the field operation environment of drilling crew, and does not receive weather fully at work, environment, temperature, the interference of light.In the use, other characteristics of it some also reveal in the open air: simple in structure, easy to use, low in energy consumption, volume is urinated in carrying, and topmostly can more intuitively obtain the digitized measurement result.Because it can not receive environment and boisterous the influence, can be quick and precisely, save time, the labour-saving measures mud balance, therefore has more practicality.
Description of drawings
Fig. 1 is a composition sketch map of the present invention.
Fig. 2 is an electrical structure block diagram of the present invention.
Fig. 3 is the electrical schematic diagram of microprocessor portion in the specific embodiment of the invention.
Fig. 4 is the electrical schematic diagram of AccessPort part in the specific embodiment of the invention.
Fig. 5 is the electrical schematic diagram of EEPROM and each interface section in the specific embodiment of the invention.
Fig. 6 is the electrical schematic diagram of charactron latch part in the specific embodiment of the invention.
Fig. 7 is A/D modular converter and a reference power supply electrical schematic diagram partly thereof in the specific embodiment of the invention.
Fig. 8 is the electrical schematic diagram of power unit in the specific embodiment of the invention.
Fig. 9 is the electrical schematic diagram of matrix keyboard part in the specific embodiment of the invention.
Figure 10 is the electrical schematic diagram of charactron part in the specific embodiment of the invention.
1-shuttle among the figure, 2-pressure sensor, 3-digital display screen, 4-matrix keyboard, 5-signal cable, 6-densometer housing, 7-central controller.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Combined shown in Figure 2ly by Fig. 1, this kind digital display type drilling fluid density meter mainly comprises densometer housing 6, shuttle 1, pressure sensor 2, central controller 7, a digital display screen 3 and a cover matrix keyboard 4.Wherein, said shuttle 1 vertical fixing takes up the drilling fluid of density to be measured in the shuttle 1 on densometer housing 6.2 bottoms that are positioned at shuttle 1 of pressure sensor, the pressure signal that pressure sensor 2 produces transfers to the pressure signal input of the central controller 7 that is positioned at densometer housing 6 through holding wire.Said central controller 7 comprises A/D reference power supply, A/D modular converter, eeprom memory and microprocessor; Said A/D reference power supply provides reference power supply for the A/D modular converter; Said A/D modular converter receives the pressure signal that comes from the aforementioned pressure signal input part; Conversion back input microprocessor, said microprocessor read transformation result and are calculated to be corresponding drilling fluid density value output under the effect of initialize program; Aforementioned drilling fluid density value by microprocessor output exports digital display screen 3 to through signal cable 5 and shows; Said microprocessor is a single-chip microcomputer.
In addition; In order to make after density measurement, under the situation of not cutting off the power supply, before next one work; Can the result of this measurement be kept and show always, can show between signal output part and the digital display screen in the drilling fluid density value of said microprocessor to be connected with a latch.
Be the example of practical implementation of the present invention below, the microprocessor that Fig. 3 to Figure 10 provides among the present invention respectively to be adopted, AccessPort part, EEPROM and each interface section, charactron latch part, A/D modular converter and reference power supply part thereof, power unit, matrix keyboard part and charactron electrical schematic diagram partly.
The basis of the present invention design is to be this common practise of density=mass/volume according to proportion.Under the situation of given volume, we only need know the parameter of quality, just can converse the density under this kind volume.Because volume can artificially be fixed, fixing through shuttle in the present invention, so as long as this kind densometer can accurately record drilling fluid weight, the calculating that just can pass through single-chip microcomputer obtains visual density value.
During practical implementation; The volume of shuttle can be selected arbitrarily as required within the specific limits; Sensor is installed in the below of shuttle, can the density response value of sample, the response of water and the response of air be transferred to single-chip microcomputer, and single-chip microcomputer can calculate from the signal that sensor receives; Converse the density value of mud sample, what when converting, select for use is median average filter method.So-called median average filter method promptly reads N transformation result, removes a maximum value and a minimum value, calculates the arithmetic mean of instantaneous value of N-2 data then, can eliminate because the caused sampled value deviation of impulse disturbances.To show from the signal that single-chip microcomputer receives through nixie display at last.At present, the digital display type densometer is of common occurrence on market, but its principle and the present invention are all inequality.One type is U-shaped vibrating tube method, and small amount of sample is injected the coupon of controlling temperature, and record vibration frequency or cycle are with the density of the coupon constant calculations sample that obtains in advance.The coupon constant is that the vibration frequency when being full of known density demarcation liquid with coupon is confirmed.Another kind of is exactly to pass ducted measured medium by the gamma rays that radioactive source produces; Wherein a part of ray is by medium scattering and absorption; The probe that the remainder ray is installed in the pipeline another side receives; How many rays medium has absorbed, and is the index absorbing rule with the density of measured medium.These two kinds of digital display type densometers relatively the present invention all want much complicated, thus the present invention at the labour intensity that alleviates workman's execute-in-place, reduce error that extraneous factor brings and the precision that improves the drilling fluid density measurement aspect all be improved.
Claims (2)
1. digital display type drilling fluid density meter; Comprise densometer housing (6), it is characterized in that: said drilling fluid density meter also comprises a shuttle (1), a pressure sensor (2), a central controller (7), a digital display screen (3) and a cover matrix keyboard (4); Said shuttle (1) vertical fixing is on densometer housing (6); Pressure sensor (2) then is positioned at the bottom of shuttle (1), and the pressure signal that pressure sensor (2) produces transfers to the pressure signal input of the central controller (7) that is positioned at densometer housing (6) through holding wire; Said central controller (7) comprises A/D reference power supply, A/D modular converter, eeprom memory and microprocessor; Said A/D reference power supply provides reference power supply for the A/D modular converter; Said A/D modular converter receives the pressure signal that comes from the aforementioned pressure signal input part; Conversion back input microprocessor, said microprocessor read transformation result and are calculated to be corresponding drilling fluid density value output under the effect of initialize program; Aforementioned drilling fluid density value by microprocessor output exports digital display screen (3) to through signal cable (5) and shows; Said microprocessor is a single-chip microcomputer.
2. digital display type drilling fluid density meter according to claim 1 is characterized in that: the drilling fluid density value at said microprocessor shows that signal output part and digital display screen (3) are connected with a latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105165426A CN102454374A (en) | 2010-10-22 | 2010-10-22 | Digital display drilling fluid densitometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105165426A CN102454374A (en) | 2010-10-22 | 2010-10-22 | Digital display drilling fluid densitometer |
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| Publication Number | Publication Date |
|---|---|
| CN102454374A true CN102454374A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105165426A Pending CN102454374A (en) | 2010-10-22 | 2010-10-22 | Digital display drilling fluid densitometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489858A (en) * | 2018-03-27 | 2018-09-04 | 中国石油集团渤海钻探工程有限公司 | A kind of pressing crack construction sand ratio monitoring calibrating installation |
| CN114237145A (en) * | 2021-11-22 | 2022-03-25 | 浙江华章科技有限公司 | Gear box temperature and vibration analysis and maintenance system |
Citations (7)
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|---|---|---|---|---|
| CN2325772Y (en) * | 1997-04-25 | 1999-06-23 | 赵万山 | Digital displaying type instrument for investigating density |
| CN2599565Y (en) * | 2003-03-06 | 2004-01-14 | 赵万山 | Digital display slurry densimeter device |
| JP2008180533A (en) * | 2007-01-23 | 2008-08-07 | Shimadzu Corp | Specific gravity measuring kit and specific gravity measuring device |
| CN201152171Y (en) * | 2008-01-18 | 2008-11-19 | 邹野 | Drilling mud integral parameter measuring equipment |
| CN201348599Y (en) * | 2009-01-14 | 2009-11-18 | 大庆油田有限责任公司 | Differential pressure density instrument |
| KR20100034357A (en) * | 2008-09-23 | 2010-04-01 | 한국표준과학연구원 | Solid density precise autometer |
| CN101762436A (en) * | 2010-01-06 | 2010-06-30 | 李彬 | Liquid density measurement device and measurement method |
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2010
- 2010-10-22 CN CN2010105165426A patent/CN102454374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325772Y (en) * | 1997-04-25 | 1999-06-23 | 赵万山 | Digital displaying type instrument for investigating density |
| CN2599565Y (en) * | 2003-03-06 | 2004-01-14 | 赵万山 | Digital display slurry densimeter device |
| JP2008180533A (en) * | 2007-01-23 | 2008-08-07 | Shimadzu Corp | Specific gravity measuring kit and specific gravity measuring device |
| CN201152171Y (en) * | 2008-01-18 | 2008-11-19 | 邹野 | Drilling mud integral parameter measuring equipment |
| KR20100034357A (en) * | 2008-09-23 | 2010-04-01 | 한국표준과학연구원 | Solid density precise autometer |
| CN201348599Y (en) * | 2009-01-14 | 2009-11-18 | 大庆油田有限责任公司 | Differential pressure density instrument |
| CN101762436A (en) * | 2010-01-06 | 2010-06-30 | 李彬 | Liquid density measurement device and measurement method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489858A (en) * | 2018-03-27 | 2018-09-04 | 中国石油集团渤海钻探工程有限公司 | A kind of pressing crack construction sand ratio monitoring calibrating installation |
| CN114237145A (en) * | 2021-11-22 | 2022-03-25 | 浙江华章科技有限公司 | Gear box temperature and vibration analysis and maintenance system |
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Application publication date: 20120516 |