CN201130177Y - Double-differential pressure type water content meter - Google Patents

Double-differential pressure type water content meter Download PDF

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Publication number
CN201130177Y
CN201130177Y CNU2007201334293U CN200720133429U CN201130177Y CN 201130177 Y CN201130177 Y CN 201130177Y CN U2007201334293 U CNU2007201334293 U CN U2007201334293U CN 200720133429 U CN200720133429 U CN 200720133429U CN 201130177 Y CN201130177 Y CN 201130177Y
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CN
China
Prior art keywords
pipeline
pipe
differential pressure
flange
hose
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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.)
Expired - Fee Related
Application number
CNU2007201334293U
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Chinese (zh)
Inventor
寿焕根
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寿焕根
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Priority to CNU2007201334293U priority Critical patent/CN201130177Y/en
Application granted granted Critical
Publication of CN201130177Y publication Critical patent/CN201130177Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a double differential pressure automatic monitor for water content, which is characterized in that, the flange ends of an inlet flange connecting hose and an outlet flange connecting hose are respectively horizontally connected with a pipeline having the water content being tested; the other ends of the inlet flange connecting hose and the outlet flange connecting hose are respectively vertically connected with the bottom ends of two measuring pipe sections; both ends of an inversed U-shaped connecting hose are respectively connected with the upper ends of the two vertical measuring pipe sections; the inlet flange connecting hose, the two measuring pipe sections, the inversed U-shaped connecting hose and the outlet flange connecting hose form an inversed U-shaped structure; the upper ends and lowered ends of the two measuring pipe sections are respectively equipped with an upper pressure tapping port and a lower pressure tapping port, which are respectively connected with two difference pressure transmitters by two pressure guiding pipes. The double differential pressure automatic monitor for water content has the advantages that, the measuring accuracy is high, and the designed water content measurement error can be more than plus or minus 1.5%; The double differential pressure automatic monitor also has the advantages of good repeatability and reliability; therefore, the double differential pressure automatic monitor is suitable to measure the water content of crude oil under various working conditions; operation cost is low, and performance-price ration is high.

Description

Two differential pressure type watercutmeters
Technical field
The utility model relates to a kind of crude oil water content measuring instrument, especially two differential pressure type automatic water ratio-monitoring instruments.
Background technology
In existing measurement of water ratio technology basis, mainly contain sample examination method, microwave shortwave absorption process, capacitance method, radio frequency admittance and vibration densimetry and radiation absorption mensuration.The characteristics of these five kinds of measurement of water ratio methods are that measuring accuracy is higher under the technical conditions of setting, but all belong to the contact nonlinear measurement, the used measuring-signal of instrument source is all produced by electricity, limit by the site technology condition, comprise the influence of on-the-spot power supply shakiness, fouling, wax deposition, surface corrosion, so its zero drift error is big and can not monitor water percentage, long-time running poor stability by gamut, is difficult to satisfy the requirement that production is measured; Its comprehensive technical indexes of radiation absorption mensuration obviously is better than other similar instrument, but belongs to the radioactivity instrument, and potential safety hazard is arranged.
Open " crude oil water content measuring instrument " (patent No. 90201931.7) of Chinese patent, its principal feature is by the existing separation vessel in oil field, utilizes the profit density difference to measure water percentage, measures but belong to static clearance, and volume is big, can not satisfy the continuous on-line measurement of pipeline water percentage.
Summary of the invention
The purpose of this utility model is to provide a kind of pair of differential pressure type watercutmeter in order to overcome shortcoming of the prior art and limitation.This measuring instrument is simple in structure, stable performance, measuring accuracy height, the no pressure loss: easy and simple to handle, safe in utilization, can not produce any influence and pollution to operating environment, and be applicable to the crude oil water content on-line measurement under the various industrial and minerals.
The utility model is achieved through the following technical solutions:
A kind of pair of differential pressure type watercutmeter is made of suction flange connecting pipe, measurement pipeline section 2, ∩ type connecting pipe, measurement pipeline section 4, discharge flange connecting pipe.The flange end of suction flange connecting pipe and discharge flange connecting pipe is connected with tested water percentage pipeline level, the other end of suction flange connecting pipe and discharge flange connecting pipe vertically is connected with two bottoms of measuring pipeline section respectively, and the two ends of ∩ type connecting pipe are connected with vertical two upper ends of measuring pipeline section respectively; Suction flange connecting pipe, measurement pipeline section 2, ∩ type connecting pipe, measurement pipeline section 4, discharge flange connecting pipe are ∩ type structure; Upper end and the bottom of measuring pipeline section 2 and measurement pipeline section 4 are provided with pressure tappings and following pressure tappings respectively, and link to each other with two differential pressure transmitters with connecting pipe.
Above-mentioned measurement pipeline section 2 is identical with measurement pipeline section 4 structures, measuring pipeline section 2 and measuring pipeline section 4 outer tubes is round tube, the interior commutator tube of deploying, commutator tube is rectangular or square, and measurement pipeline section 2 is vertically parallel and symmetrical with measurement pipeline section 4, and last pressure tappings on measurement pipeline section 2 and the measurement pipeline section 4 and following pressure tappings position and difference in height are in full accord.
The utility model compared with prior art has following advantage:
1, measuring accuracy height, design the measurement of water ratio error can reach ± more than 1.5%, and repeated, good reliability;
2, the measuring channel flow velocity upper limit of the present utility model can reach more than 3.5 meter per seconds good linearity;
3, the inner no any movable part of the utility model, the no pressure loss;
4, the utility model is simple in structure, installation is convenient, maintenance is easy;
5, measuring error of the present utility model is not influenced by flow pattern and fluid state, need not straight length;
6, the utility model applicability is strong, is applicable to that the crude oil water content under the various working conditions is measured, and operating cost is low, its cost performance height.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is Fig. 1 measuring tube segment structure and measuring tube segment structure A-A ' sectional schematic diagram.
Embodiment
A kind of pair of differential pressure type watercutmeter is made of suction flange connecting pipe 1, measurement pipeline section 2, ∩ type connecting pipe 3, measurement pipeline section 4, discharge flange connecting pipe 5.The flange end of suction flange connecting pipe 1, flange connections 5 is connected with tested water percentage pipeline level, the other end of suction flange connecting pipe 1 and discharge flange connecting pipe 5 vertically is connected with the bottom of measuring pipeline section 4 with measurement pipeline section 2 respectively, the two ends of ∩ type connecting pipe 3 are connected with the upper end of measuring pipeline section 4 with measurement pipeline section 2 respectively, and suction flange connecting pipe 1, measurement pipeline section 2, ∩ type connecting pipe 3, measurement pipeline section 4, discharge flange connecting pipe 5 connect and be ∩ type structure; It is vertically parallel and symmetrical with measurement pipeline section 4 to measure pipeline section 2, and structure is identical, and measuring pipeline section 2 is round tube with the outer tube 8 of measuring pipeline section 4, the interior commutator tube 9 of deploying, commutator tube is square, and its objective is the effect of rectification and current stabilization, to reduce the differential pressure that secondary flow causes.Upper end and the bottom of measuring pipeline section 2 and measurement pipeline section 4 are provided with pressure tappings 10 and following pressure tappings 11 respectively, last pressure tappings 10 is in full accord with the position and the difference in height of following pressure tappings 11, its objective is in order to revise the differential pressure that flow resistance causes, to reduce the water percentage dynamic measurement error.Last pressure tappings 10 is communicated with following pressure tappings 11 usefulness connecting pipes 12, and connecting pipe 12 links to each other with differential pressure transmitter 6, differential pressure transmitter 7 again, and differential pressure transmitter 6, differential pressure transmitter 7 link to each other with microcomputer 13 respectively.
Measuring principle of the present utility model is the gravitational difference platen press, utilize the density difference of oil, water in the detected fluid, by measuring symmetrical two vertical pipeline sections 2 and the differential pressures of measurement pipeline section 4 interior upward pressure tappings 10 measured of ∩ type parallelism structural simultaneously with 11 two of following pressure tappings, according to dynamic, static fluid mechanics principle, be the respective function relation of differential pressure and water percentage, just can calculate the water percentage of trying to achieve in the profit fluid-mixing by microcomputer 13.Its principle of work is, fluid is flowed into by suction flange connecting pipe 1, through measuring pipeline section 2, ∩ type connecting pipe 3, measuring pipeline section 4, discharge flange connecting pipe 5, when flowing through measurement pipeline section 2 and measurement pipeline section 4, according to fluid mechanics principle, the water percentage of the last pressure tappings 10 of its upper and lower settings and the differential pressure of following pressure tappings 11 and fluid is determined by following formula:
η=[ΔP/(2g?h)-ρ 2]/(ρ 12)
Wherein: η is the detected fluid water percentage, and Δ P is for measuring pipeline section 2, measure the differential pressure sum of pipeline section pressure tappings 4 about, h be about the difference in height of pressure tappings, ρ 1, ρ 2Be respectively profit density, g is an acceleration of gravity.

Claims (2)

1, a kind of pair of differential pressure type watercutmeter, by suction flange connecting pipe (1), measure pipeline section (2), ∩ type connecting pipe (3), measure pipeline section (4), discharge flange connecting pipe (5) constitutes, it is characterized in that suction flange connecting pipe (1), the flange end of flange connections (5) is connected with tested water percentage pipeline level, suction flange connecting pipe (1) vertically is connected with the bottom of measuring pipeline section (4) with measurement pipeline section (2) respectively with discharge flange connecting pipe (5) other end, the two ends of ∩ type connecting pipe (3) are connected suction flange connecting pipe (1) with measurement pipeline section (2) with the upper end of measuring pipeline section (4) respectively, measure pipeline section (2), ∩ type connecting pipe (3), measure pipeline section (4), discharge flange connecting pipe (5) connects and is ∩ type structure; Upper end and the bottom of measuring pipeline section (2) and measurement pipeline section (4) are provided with pressure tappings (10) and following pressure tappings (11) respectively, and link to each other with differential pressure transmitter (6), differential pressure transmitter (7) with connecting pipe (12), differential pressure transmitter (6), differential pressure transmitter (7) link to each other with microcomputer (13) respectively.
2, a kind of pair of differential pressure type watercutmeter according to claim 1, it is characterized in that the outer tube (8) of measuring pipeline section (2) and measuring pipeline section (4) is a round tube, the interior commutator tube (9) of deploying, commutator tube is rectangular or square, and it is vertically parallel and symmetrical with measurement pipeline section (4) to measure pipeline section (2), and measurement pipeline section (2) is identical with position and difference in height that measurement pipeline section (4) is gone up pressure tappings (10) and following pressure tappings (11).
CNU2007201334293U 2007-12-18 2007-12-18 Double-differential pressure type water content meter Expired - Fee Related CN201130177Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201334293U CN201130177Y (en) 2007-12-18 2007-12-18 Double-differential pressure type water content meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201334293U CN201130177Y (en) 2007-12-18 2007-12-18 Double-differential pressure type water content meter

Publications (1)

Publication Number Publication Date
CN201130177Y true CN201130177Y (en) 2008-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201334293U Expired - Fee Related CN201130177Y (en) 2007-12-18 2007-12-18 Double-differential pressure type water content meter

Country Status (1)

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CN (1) CN201130177Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998359A (en) * 2012-09-26 2013-03-27 刘宝军 Differential pressure type crude oil water cut analyzer and measuring method thereof
CN106018172A (en) * 2016-05-24 2016-10-12 南通市飞宇石油科技开发有限公司 Method and apparatus for online detecting water and oil content in petroleum

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998359A (en) * 2012-09-26 2013-03-27 刘宝军 Differential pressure type crude oil water cut analyzer and measuring method thereof
CN106018172A (en) * 2016-05-24 2016-10-12 南通市飞宇石油科技开发有限公司 Method and apparatus for online detecting water and oil content in petroleum
CN106018172B (en) * 2016-05-24 2019-06-21 南通市飞宇石油科技开发有限公司 A kind of device for on-line checking Water Content in Oil oil content

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20081008

Termination date: 20151218