CN201314837Y - Liquid level boundary instrument for sealed tank - Google Patents

Liquid level boundary instrument for sealed tank Download PDF

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Publication number
CN201314837Y
CN201314837Y CNU2008201246437U CN200820124643U CN201314837Y CN 201314837 Y CN201314837 Y CN 201314837Y CN U2008201246437 U CNU2008201246437 U CN U2008201246437U CN 200820124643 U CN200820124643 U CN 200820124643U CN 201314837 Y CN201314837 Y CN 201314837Y
Authority
CN
China
Prior art keywords
measuring staff
liquid level
sealing cylinder
level interface
pillar
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 - Fee Related
Application number
CNU2008201246437U
Other languages
Chinese (zh)
Inventor
张洪亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING AEROSPACE JINTAI XINGCE TECHNOLOGY CO LTD
Original Assignee
BEIJING AEROSPACE JINTAI XINGCE TECHNOLOGY CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING AEROSPACE JINTAI XINGCE TECHNOLOGY CO LTD filed Critical BEIJING AEROSPACE JINTAI XINGCE TECHNOLOGY CO LTD
Priority to CNU2008201246437U priority Critical patent/CN201314837Y/en
Application granted granted Critical
Publication of CN201314837Y publication Critical patent/CN201314837Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a liquid level boundary instrument for a sealed tank, which comprises the sealed tank and the liquid level boundary instrument assembled on the sealed tank to measure the liquid level boundary in the sealed tank. The liquid level boundary instrument which is assembled at the top opening of the sealed tank further comprises a measuring staff-protecting tube, a boundary floater and a measuring staff, wherein the hollow measuring staff-protecting tube is firmly inserted in the sealed tank; one port of the measuring staff-protecting tube is positioned outside the top opening of the sealed tank; the boundary floater in which a permanent magnet is assembled is freely assembled on the measuring staff-protecting tube and positioned in the seal tank; the measuring staff is a magnetostrictive liquid level sensor; the rod-shaped end of the measuring staff is inserted in the measuring staff-protecting tube through the port of the measuring staff-protecting tube positioned outside the opening of the seal tank; and the other end of the measuring staff is connected with an electric control part positioned outside the seal tank through a cable. When the liquid level boundary instrument of the utility model fails, production does not need to be stopped, pressure does not need to be reduced, and the liquid level boundary instrument can be directly and electrically repaired without being disassembled from the sealed tank.

Description

Sealing cylinder liquid level interface instrument
Technical field
The utility model relates to a kind of sealing cylinder liquid level interface instrument that adopts magnetostrictive liquid level sensor to measure liquid-level interface position in the sealing cylinder.
Background technology
At present, capacitance type sensor is adopted in the measurement of liquid-level interface position usually in the sealing cylinder, it be utilize electric capacitance change to measure the position of liquid-level interface (oily specific inductive capacity is 2, water is 80), in recent years, the liquid level interface instrument that continuous quantity occurred, can see the dynamic change that seals liquid-level interface in the cylinder in the pulpit, but because spy is opened in the oil field for many years, the crude oil underground storage is fewer and feweri, and water flood recovery (secondary recovery) is adopted for guaranteeing crude production rate in each oil field, the part oil field is in order to guarantee crude production rate, improve the crude content of extraction liquid, adopt chemical substance such as polymkeric substance to inject the underground displacement of reservoir oil (tertiary oil recovery), injecting underground chemical substance has conduction, insulation is also arranged, the crude oil of extraction had both contained conductive materials like this, also contained megohmite insulant, and this just makes the specific inductive capacity of liquid in the sealing cylinder also change, thereby the position of using capacitive transducer to measure water-oil interface is forbidden, can't correctly show and control real water-oil interface position, the control that makes the mistake easily brings unnecessary loss.Oil field sealing cylinder all is that band is pressed operation, and liquid level interface instrument broke down in the past, can only after pressure is put in stopping production liquid level sensor be removed place under repair, influenced the normal operation of oil field gathering and transportation process, brought unnecessary loss.
Summary of the invention
Technical problem to be solved in the utility model is, a kind of sealing cylinder liquid level interface instrument is provided, and, needs to stop production and puts the deficiency of pulling down the sensor place under repair after the pressure when breaking down with the capacitance type sensor that overcomes prior art.
For achieving the above object, sealing cylinder liquid level interface instrument of the present utility model, comprise that a sealing cylinder and is installed in the liquid level interface instrument of measuring liquid-level interface in the sealing cylinder on the sealing cylinder, it is characterized in that, described liquid level interface instrument is installed in the cylinder mouth at the top of described sealing cylinder, and this liquid level interface instrument further comprises:
One measuring staff pillar is a hollow tubular, fixedly is inserted in the sealing cylinder, and wherein a port of this measuring staff pillar is placed on the top cylinder mouth of sealing cylinder;
One interface float is equipped with permanent magnet in it, freely be sheathed on this measuring staff pillar, is positioned at the sealing cylinder;
One measuring staff is a magnetostrictive liquid level sensor, and wherein the shaft-like end of this measuring staff is plugged in this measuring staff pillar by the port that is placed on the measuring staff pillar that seals the cylinder mouth, and the other end of this measuring staff connects the electrical control division that is placed on the sealing cylinder by cable.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that described liquid level interface instrument also comprises:
One stops the back-up ring that the interface float comes off, and is installed in the draw-in groove of described measuring staff pillar end.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, the cylinder mouth of described sealing cylinder is equipped with a cylinder mouth flange, also is fixed with a sensor mounting flange on this cylinder mouth flange, and described measuring staff pillar is fixedlyed connected with described sealing cylinder by this sensor mounting flange.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, described measuring staff pillar and described measuring staff make the shaft-like end of described measuring staff be set in this measuring staff pillar by being threaded.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, described measuring staff pillar and described sensor mounting flange are by the fixed installation that is threaded.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, also is provided with a liquid-inlet and a liquid outlet on the described sealing cylinder, and this import is connected a pump respectively with outlet, and this pump connects described electrical control division by cable.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, is provided with O-ring seal between described measuring staff pillar and described sensor mounting flange.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, is provided with O-ring seal between described measuring staff pillar and described measuring staff.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that an end of described measuring staff pillar is provided with a hollow web member, and this hollow web member cover is welded in the outside, an end of this measuring staff pillar.
Above-mentioned sealing cylinder liquid level interface instrument is characterized in that, described measuring staff pillar is threaded with described measuring staff by the pipe internal thread of this hollow web member, and the pipe external thread by this hollow web member is threaded with described sensor mounting flange.
Compared with prior art, the beneficial effects of the utility model are:
The utility model provides the sealing cylinder liquid level interface instrument of a kind of physical construction and electrical structure separate design, makes when liquid dielectric changes in the sealing cylinder, still the accurate position at measuring liquid level interface; The sealing cylinder is that band is pressed operation, after adopting electric wiring and physical construction separate design, after liquid level interface instrument breaks down, can not stop production and not reduce pressure, need not pull down liquid level interface instrument from the sealing cylinder and just can directly carry out electrical repair, not influence the normal operation of oil field gathering and transportation process.Adopt magnetostrictive liquid level sensor to measure the liquid level interface instrument of liquid-level interface position in the sealing cylinder in addition, this liquid level interface instrument utilizes the ball float principle, measure the position of liquid surface by liquid specific gravity difference in the sealing cylinder, characteristics such as have precision height, good reproducibility, reliable and stable, non-contact measurement, the life-span is long, environmental suitability is strong.
Description of drawings
Fig. 1 is the scheme of installation of the utility model sealing cylinder liquid level interface instrument;
Fig. 2 and Fig. 3 are the structural representation of the utility model liquid level interface instrument;
Fig. 4 is a measuring staff contour structures synoptic diagram in the utility model;
Fig. 5 is the structural representation of measuring staff pillar in the utility model;
Fig. 6 is the structural representation of sealing cylinder in the utility model;
Fig. 7 is a measuring staff pillar and the assembling synoptic diagram that seals cylinder in the utility model;
Fig. 8 is the application synoptic diagram of the utility model sealing cylinder liquid level interface instrument.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is explained in detail, with further understanding the purpose of this utility model, scheme and effect, but not as the restriction to the utility model claim protection domain.
With reference to figure 1, Fig. 2 and Fig. 4, be structural representation of the present utility model, sealing cylinder liquid level interface instrument of the present utility model comprises that a sealing cylinder 7 and is installed in the liquid level interface instrument of the interior liquid-level interface of measurement sealing cylinder at sealing cylinder top, described liquid level interface instrument further comprises: a measuring staff 1, a measuring staff pillar 2, an interface float 3 and a back-up ring 4, wherein, measuring staff pillar 2 is a hollow tubular, be fixedly mounted in the sealing cylinder 7, wherein a port of this measuring staff pillar 2 is placed on the top cylinder mouth of sealing cylinder; In the interface float 3 permanent magnet is housed, it freely is sheathed on the measuring staff pillar 2, is positioned at sealing cylinder 7; Measuring staff 1 is a magnetostrictive liquid level sensor, and the shaft-like end of this measuring staff 1 is plugged in this measuring staff pillar 2 by the port that is placed on the measuring staff pillar that seals the cylinder mouth, and the other end of this measuring staff 1 connects the electrical control division that is placed on the sealing cylinder by cable.
With reference to figure 4 and Fig. 5, be respectively the structural representation of measuring staff and measuring staff pillar in the utility model, measuring staff pillar 2 is a hollow tubular, wherein stretch into sheathed interface float on the end in the sealing cylinder 7, be provided with a draw-in groove 22 at port, back-up ring 4 is installed in this draw-in groove 22, comes off from measuring staff pillar 2 to prevent interface float 3.The other end at the measuring staff pillar is provided with a hollow web member 21, these web member 21 1 end covers are welded in an end of measuring staff pillar, the other end of web member 21 is provided with internal thread 210, corresponding connecting portion is provided with the external thread 120 that matches on measuring staff 1, make measuring staff 1 and measuring staff pillar 2 by being threaded, also be provided with O-ring seal 6 between measuring staff 1 and measuring staff pillar 2, sealing circle 6 is provided with between web member 21 and the measuring staff 1.When sensor breaks down, under sealing cylinder normal operation, can take off measuring staff 1 easily and safeguard.
With reference to figure 6 and Fig. 7, be respectively structural representation and the measuring staff pillar and the assembling synoptic diagram that seals cylinder of sealing cylinder in the utility model.Cylinder mouth at sealing cylinder 7 is equiped with a cylinder mouth flange 8, is installed with a sensor mounting flange 9 on this cylinder mouth flange 8, and this cylinder mouth flange 8 is connected with nut 11 by bolt 10 with sensor mounting flange 9 and is fixed on the cylinder mouth of sealing cylinder.Outer end, bottom at the web member 21 of measuring staff pillar also is provided with external thread, the mounting hole of respective sensor mounting flange 9 is provided with internal thread, measuring staff pillar 2 and sensor mounting flange 9 are by being threaded, and make the measuring staff pillar vertically be inserted in the sealing cylinder 7, please refer to Fig. 3 again, between described web member 21 and described sensor mounting flange 9, be provided with O-ring seal 5, make measuring staff pillar 2 be connected with the sealing seal with annular groove.
With reference to figure 8, the application synoptic diagram for the utility model sealing cylinder liquid level interface instrument also is provided with a liquid-inlet 71 and a liquid outlet 72 on the described sealing cylinder 7, and this import 71 is connected a pump 710 respectively with outlet 72, and this pump connects electrical control division 110 by cable.
The utility model provides a kind of liquid level interface instrument that adopts magnetostrictive liquid level sensor to measure liquid-level interface position in the sealing cylinder, this liquid level interface instrument utilizes the ball float principle, measure the position of liquid surface by liquid specific gravity difference in the sealing cylinder, adopt physical construction and electrical structure isolating construction, be not subjected to the influence of the change in dielectric constant of medium.Characteristics such as magnetostrictive liquid level sensor has precision height, good reproducibility, reliable and stable, non-contact measurement, the life-span is long, environmental suitability is strong.Its output signal is a real absolute position output, be not ratio or need the signal of processing and amplifying again, so there is not the situation of drift or variate, therefore needn't need periodic calibrating and maintenance as other liquid level sensor; Exactly because its output signal is an absolute figure,, more need not return to zero-bit again so can not receive the formation problem to data even power interruption recloses also.The electronic unit in magnetostrictive liquid level sensor electronics storehouse produces a current impulse when the measuring liquid level interface location, and this electric current produces a magnetic field simultaneously and moves downward along waveguide filament.The interface float moves with the change of liquid-level interface along measuring staff, owing in the float of interface a group permanent-magnet is arranged, so ball float produces a magnetic field simultaneously.When magnetic field and the ball float magnetic field addition formation helical magnetic field that electric current produces, produce instantaneous torsion, make the waveguide filament twisting and produce tension pulse, this pulse is passed back along waveguide filament with fixing speed, produce the induction current pulse at the coil two ends and promptly return pulse, by measuring initial pulse and returning mistiming between the pulse and accurately determine to seal the position of liquid-level interface in the cylinder.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims (10)

1, a kind of sealing cylinder liquid level interface instrument, comprise that a sealing cylinder and is installed in the liquid level interface instrument of measuring liquid-level interface in the sealing cylinder on the sealing cylinder, it is characterized in that described liquid level interface instrument is installed in the cylinder mouth at the top of described sealing cylinder, this liquid level interface instrument further comprises:
One measuring staff pillar is a hollow tubular, fixedly is inserted in the sealing cylinder, and wherein a port of this measuring staff pillar is placed on the top cylinder mouth of sealing cylinder;
One interface float is equipped with permanent magnet in it, freely be sheathed on this measuring staff pillar, is positioned at the sealing cylinder;
One measuring staff is a magnetostrictive liquid level sensor, and wherein the shaft-like end of this measuring staff is plugged in this measuring staff pillar by the port that is placed on the measuring staff pillar that seals the cylinder mouth, and the other end of this measuring staff connects the electrical control division that is placed on the sealing cylinder by cable.
2, sealing cylinder liquid level interface instrument according to claim 1 is characterized in that described liquid level interface instrument also comprises:
One stops the back-up ring that the interface float comes off, and is installed in the draw-in groove of described measuring staff pillar end.
3, sealing cylinder liquid level interface instrument according to claim 1, it is characterized in that, the cylinder mouth of described sealing cylinder is equipped with a cylinder mouth flange, also is fixed with a sensor mounting flange on this cylinder mouth flange, and described measuring staff pillar is fixedlyed connected with described sealing cylinder by this sensor mounting flange.
4, sealing cylinder liquid level interface instrument according to claim 1 is characterized in that, described measuring staff pillar and described measuring staff make the shaft-like end of described measuring staff be set in this measuring staff pillar by being threaded.
5, sealing cylinder liquid level interface instrument according to claim 3 is characterized in that, described measuring staff pillar and described sensor mounting flange are by the fixed installation that is threaded.
6, sealing cylinder liquid level interface instrument according to claim 1 is characterized in that, also is provided with a liquid-inlet and a liquid outlet on the described sealing cylinder, and this import is connected a pump respectively with outlet, and this pump connects described electrical control division by cable.
7, sealing cylinder liquid level interface instrument according to claim 5 is characterized in that, is provided with O-ring seal at described measuring staff pillar and described sensor mounting flange.
8, sealing cylinder liquid level interface instrument according to claim 4 is characterized in that, is provided with O-ring seal between described measuring staff pillar and described measuring staff.
9, sealing cylinder liquid level interface instrument according to claim 1 is characterized in that, an end of described measuring staff pillar is provided with a hollow web member, and this hollow web member cover case is surveyed outside an end of this measuring staff pillar.
10, sealing cylinder liquid level interface instrument according to claim 9, it is characterized in that, described measuring staff pillar is threaded with described measuring staff by the pipe internal thread of this hollow web member, and the pipe external thread by this hollow web member is threaded with described sensor mounting flange.
CNU2008201246437U 2008-12-15 2008-12-15 Liquid level boundary instrument for sealed tank Expired - Fee Related CN201314837Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201246437U CN201314837Y (en) 2008-12-15 2008-12-15 Liquid level boundary instrument for sealed tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201246437U CN201314837Y (en) 2008-12-15 2008-12-15 Liquid level boundary instrument for sealed tank

Publications (1)

Publication Number Publication Date
CN201314837Y true CN201314837Y (en) 2009-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201246437U Expired - Fee Related CN201314837Y (en) 2008-12-15 2008-12-15 Liquid level boundary instrument for sealed tank

Country Status (1)

Country Link
CN (1) CN201314837Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102322877A (en) * 2011-05-31 2012-01-18 上海凡宜科技电子有限公司 Magnetostrictive position sensor and magnetostrictive sensing component thereof
CN104014161A (en) * 2013-03-01 2014-09-03 中石化上海工程有限公司 Bulk pharmaceutical chemical extraction liquid separation method
CN103707549B (en) * 2013-12-17 2016-03-23 马钢(集团)控股有限公司 Hydraulic press oil tank level supervising device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102322877A (en) * 2011-05-31 2012-01-18 上海凡宜科技电子有限公司 Magnetostrictive position sensor and magnetostrictive sensing component thereof
CN102322877B (en) * 2011-05-31 2013-04-24 上海凡宜科技电子有限公司 Magnetostrictive position sensor and magnetostrictive sensing component thereof
CN104014161A (en) * 2013-03-01 2014-09-03 中石化上海工程有限公司 Bulk pharmaceutical chemical extraction liquid separation method
CN103707549B (en) * 2013-12-17 2016-03-23 马钢(集团)控股有限公司 Hydraulic press oil tank level supervising device

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Legal Events

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

Granted publication date: 20090923

Termination date: 20161215