CN109959424A - A kind of device of Antenna Type radar level gauge guided wave measurement liquid level - Google Patents
A kind of device of Antenna Type radar level gauge guided wave measurement liquid level Download PDFInfo
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- CN109959424A CN109959424A CN201910284009.2A CN201910284009A CN109959424A CN 109959424 A CN109959424 A CN 109959424A CN 201910284009 A CN201910284009 A CN 201910284009A CN 109959424 A CN109959424 A CN 109959424A
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- level gauge
- guided wave
- antenna
- waveguide pipe
- radar level
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to a kind of devices of Antenna Type radar level gauge guided wave measurement liquid level, for measuring tank level；Including radar level gauge and waveguide pipe, the radar level gauge is mounted in the tank body, the radar level gauge is connected with antenna, and the waveguide pipe is mounted in the tank body and is set on the outside of the antenna, offers the intercommunicating pore for making liquid level equilibrium inside and outside waveguide pipe in the waveguide pipe.The device of the invention, structure are simple and convenient to operate, measure the advantages that accurate, stable, reliable, non-maintaining, and function can be used in the case where vacuum etc. is more demanding to environmental pressure；Under normal pressure state, echo-signal increases 10-15db, and after vacuumizing and reaching 1kpa, echo-signal increases to 22db by original 0db, in good condition.
Description
Technical field
The present invention relates to viscose glue industry acid bath cleaning liquid level fields of measurement, and in particular to one kind is different from existing for changing
The device of the Antenna Type radar level gauge guided wave measurement liquid level of fine industry acid bath crystallization level measuring method.
Background technique
Currently, there are many level measuring method both at home and abroad, but for being easy crystallization and the demanding place of vacuum pressure in tank,
There are limitation in instrument selection, type selecting difficulty is larger.If continuing to use existing radar level gauge, liquid cannot be normally measured
Position, crystallization and vacuum lead to radar microwave dropout.The cost of the existing radar level gauge of replacement remodeling, company's investment is up to several
100000, the effect after use is unknown.
Summary of the invention
The technical problem to be solved by the present invention is to current radar level gauges not to be able to satisfy crystallization in tank body, vacuum equipressure
The environmental demands such as force request height provide a kind of device of Antenna Type radar level gauge guided wave measurement liquid level.
The technical scheme to solve the above technical problems is that a kind of Antenna Type radar level gauge guided wave measures liquid level
Device, for measuring tank level；Including radar level gauge and waveguide pipe, the radar level gauge is mounted on the tank body
In, the radar level gauge is connected with antenna, and the waveguide pipe is mounted in the tank body and is set on the outside of the antenna, institute
State the intercommunicating pore for offering in waveguide pipe and making liquid level equilibrium inside and outside waveguide pipe.
The beneficial effects of the present invention are: the device of the invention, structure is simple and convenient to operate, it is accurate to measure, stablize, is reliable,
The advantages that non-maintaining, can use function in the case where vacuum etc. is more demanding to environmental pressure；Under normal pressure state, echo letter
Number increase 10-15db, after vacuumizing and reaching 1kpa, echo-signal increases to 22db by original 0db, in good condition.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the waveguide pipe is vertically arranged and lower end is connected with reflection elbow.
Beneficial effect using above-mentioned further scheme is: the setting of elbow is reflected, when liquid level drops to reflection in tank body
Elbow, liquid level show null value, and reflection elbow is equivalent to tank base, can effectively be shielded to radar signal, prevent letter
Number decaying.
Further, crystallization flusher is connected with below the radar level gauge, the crystallization flusher includes that connection is external
It the water inlet at water source and is sprayed water into the waveguide pipe to clean the water outlet of the antenna or the waveguide pipe inner sidewall.
Beneficial effect using above-mentioned further scheme is: after production run 8-12 hours, radar antenna can gradually glue
Attached some crystals are cleared up in antenna or waveguide pipe in real time at this point, can be washed by water using crystallization flusher to radar antenna
The crystal that measurement is influenced on side wall makes microwave attenuation signal restore normal condition, ensures the accuracy continuously measured.
Further, the crystallization flusher in a ring and is set in the waveguide pipe, and the water inlet is located at the knot
On the outer ring side wall of brilliant flusher, the water outlet is located on the interior ring-side wall of the crystallization flusher.
Beneficial effect using above-mentioned further scheme is: the crystallization flusher of ring structure facilitates installation.
Further, the water outlet is multiple and uniformly distributed on the interior ring-side wall of the crystallization flusher.
Beneficial effect using above-mentioned further scheme is: annular crystallization flusher and thereon multiple water outlets are set
It sets, comprehensive flushing can be carried out to antenna and waveguide pipe inner sidewall.
Further, the water outlet is the inclined hole being obliquely installed upward or downward, to be sprayed against on the antenna.
Beneficial effect using above-mentioned further scheme is: setting inclined hole for water outlet, water outlet can be made finally upward
Or meet at downwards on antenna a bit, flushing effect is more preferable, and part water can rinse downwards along antenna, after part water can be by antenna
The inner sidewall of waveguide pipe is rinsed.
Further, the water inlet is connected with scouring electromagnetic valve.
Beneficial effect using above-mentioned further scheme is: the bath optional automatic start by set date of solenoid valve rinses crystallization
Device is washed by water 1-2 minutes, clears up the crystal that measurement is influenced on antenna or waveguide pipe inner sidewall in real time, restores microwave attenuation signal
Normal condition ensures the accuracy continuously measured.
Further, the crystallization flusher includes upper housing and lower case, is respectively equipped in the upper housing and lower case
Maze-type structure, the upper housing and lower case setting symmetrical above and below and being detachably connected makes its internal form hollow labyrinth type water
Road.
Beneficial effect using above-mentioned further scheme is: using hollow labyrinth type channel structure, water outlet can be made to act on
The more uniform stabilization of power makes to the more uniform stabilization of the percussion of antenna, and flushing effect is more preferable.
Further, the radar level gauge is mounted in the tank body by radar flange, and the waveguide pipe passes through guided wave
Pipe flange is mounted in the tank body.
Beneficial effect using above-mentioned further scheme is: being separately mounted to radar level gauge and waveguide pipe by flange
It is easy to disassemble in tank body.
Further, the internal diameter of the waveguide pipe is less than or equal to the diameter of the guided wave pipe flange.
Beneficial effect using above-mentioned further scheme is: by being defined to guided wave bore, imitating signal shielding
Fruit and level gauging accuracy reach best.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the device that inventive antenna formula radar level gauge guided wave measures liquid level.
In attached drawing, parts list represented by the reference numerals are as follows:
1, radar level gauge；11, antenna；2, waveguide pipe；21, guided wave pipe flange；22, intercommunicating pore；23, bolt is connected；3,
Reflect elbow；4, flusher is crystallized；5, scouring electromagnetic valve.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.
As shown in Figure 1, a kind of device of Antenna Type radar level gauge guided wave measurement liquid level of the present embodiment, for measuring tank
Body fluid position；Including radar level gauge 1 and waveguide pipe 2, the radar level gauge 1 is mounted in the tank body, the radar level
Meter 1 is connected with antenna 11, and the waveguide pipe 2 is mounted in the tank body and is set in 11 outside of antenna, the waveguide pipe 2
On offer the intercommunicating pore 22 for making liquid level equilibrium inside and outside waveguide pipe 2.
Wherein, the waveguide pipe is made of shielding material, for example, stainless steel 904L metal material, wall thickness can be used
6mm, guided wave inside pipe wall is required to be smooth, impulse- free robustness, and installation vertical missing is less than ± 0.5 °, and waveguide pipe, guided wave are arranged outside antenna
Aerial signal is enclosed in guided wave tube space by pipe as a carrier, spread signal will not, only the space in waveguide pipe
Radar wave signal intensity can be improved in interior transmission, stablizes Antenna Type radar level gauge really under easy crystallization, high vacuum state
Measurement liquid level.
As shown in Figure 1, the setting of the intercommunicating pore 22, can make liquid level equilibrium inside and outside waveguide pipe 2, and intercommunicating pore 22 is
It is multiple, and along the axial direction arrangement of waveguide pipe 2, one or more intercommunicating pores can be set on the same sagittal plane of waveguide pipe 2
22.Intercommunicating pore opening diameter 30mm, 180 ° of through-holes of axis, it is desirable that the degree of eccentricity of intercommunicating pore is within the scope of ± 5 °.
The device of the present embodiment, structure are simple and convenient to operate, measure the advantages that accurate, stable, reliable, non-maintaining, can be
Function is used in the case that vacuum etc. is more demanding to environmental pressure；Under normal pressure state, echo-signal increases 10-15db,
It vacuumizes after reaching 1kpa, echo-signal increases to 22db by original 0db, in good condition.
As shown in Figure 1, the embodiment of the present invention waveguide pipe 2 is vertically arranged and lower end is connected with reflection elbow 3.Reflect elbow
Setting, when liquid level drops to reflection elbow in tank body, liquid level shows null value, and reflection elbow is equivalent to tank base, can be with
Radar signal is effectively shielded, anti-stop signal decaying.The reflection elbow internal diameter is identical as guided wave bore, waveguide pipe with
Reflection or is wholely set elbow welding, and the welded gaps of the waveguide pipe and the reflection elbow are less than 1mm, the degree of eccentricity 1 ° it
Interior, when installation, will avoid feed liquor whirlpool in tank body, can be forward into liquid flow path direction.
As shown in Figure 1, being connected with crystallization flusher 4 below the embodiment of the present invention radar level gauge 1, the crystallization is rinsed
Device 4 includes the water inlet of connection external water source and sprays water into the waveguide pipe 2 to clean the antenna 11 or the waveguide pipe 2
The water outlet of inner sidewall.After production run 8-12 hours, radar antenna can gradually adhere to some crystals, at this point, available
Flusher is crystallized to wash by water to radar antenna, clears up the crystal for influencing measurement on antenna or waveguide pipe inner sidewall in real time,
So that microwave attenuation signal is restored normal condition, ensures the accuracy continuously measured.
Wherein, the thickness of the crystallization flusher is only 60mm, and interior design has hollow labyrinth water channel, is divided into upper layer and lower layer
Bonding.Crystallize flusher and select PP material, can water pressure resistance 10bar, water temperature is no more than 100 DEG C, and water column is around antenna when water spray.
In order to guarantee that the water outlet for crystallizing flusher 4 can smoothly spray water into the waveguide pipe 1, the waveguide pipe 2
Side wall on position corresponding with 4 water outlet of crystallization flusher, also offer several through-holes, make 2 inner cavity of waveguide pipe and institute
State the water outlet connection of crystallization flusher 4.
As shown in Figure 1, the embodiment of the present invention crystallization flusher 4 in a ring and is set in the waveguide pipe 2, it is described into
The mouth of a river is located on the outer ring side wall of the crystallization flusher 4, and the water outlet is located at the interior ring-side wall of the crystallization flusher 4
On.The crystallization flusher of ring structure, facilitates installation.
One concrete scheme of the present embodiment is that the water outlet is multiple and uniformly distributed in the crystallization flusher 4
Interior ring-side wall on.The crystallization flusher of annular and the setting of multiple water outlets thereon, can be to antenna and waveguide pipe inside
Wall carries out comprehensive flushing.
One preferred embodiment of the present embodiment is that the water outlet is the inclined hole being obliquely installed upward or downward, by water
It is injected on the antenna 11.Inclined hole is set by water outlet, one that water outlet is finally met at upward or downward on antenna can be made
Point, flushing effect is more preferable, and part water can rinse downwards along antenna, and part water can be by carrying out the inner sidewall of waveguide pipe after antenna
It rinses.And the setting of inclined hole, it is also able to carry out effective flushing to upper antenna end, prevents the place not flushed.
Wherein, specifically, the water inlet is connected with scouring electromagnetic valve 5, scouring electromagnetic valve 5 selects alternating current 220V or straight
Flow 24V.Specifically, the jet water spout of diameter DN25 is connected in the water inlet of the crystallization flusher, by the bath electromagnetism
Valve is mounted on the jet water spout, bath solenoid valve can choose manually boot or self-timing starting.Preferably, bath electromagnetism
The optional automatic start by set date of valve makes to crystallize flusher bath 1-2 minutes, and clear up influences to survey on antenna or waveguide pipe inner sidewall in real time
The crystal of amount makes microwave attenuation signal restore normal condition, ensures the accuracy continuously measured.
One concrete scheme of the present embodiment is that the crystallization flusher 4 includes upper housing and lower case, the upper housing
Make in it with being respectively equipped with maze-type structure, the upper housing and lower case setting symmetrical above and below in lower case and being detachably connected
Portion forms hollow labyrinth type water channel.It using hollow labyrinth type channel structure, can make to be discharged the more uniform stabilization of active force, make pair
The more uniform stabilization of the percussion of antenna, flushing effect are more preferable.
Wherein, the upper housing and lower case for constituting the hollow labyrinth type water channel are respectively with a thickness of 30mm, diameter Φ
The disc structure of 212mm, be processed into it is hollow after bonded, make boring, in any circumferential surface aperture to hollow part, weldering
PP water pipe (jet water spout) is connect, after the inner circle of jet water spout bonds, 360 degree are carried out on the inner ring end face of upper housing and lower case
Any aperture, opening diameter are not easy excessive, and 3-4mm is best.Make water enter water channel back wall to be circumferentially rinsed, antenna is in disk
Centre bit, cross center after water can be flushed on guided wave inside pipe wall.
As shown in Figure 1, the radar level gauge 1 is mounted in the tank body by radar flange, the waveguide pipe 2 passes through
Guided wave pipe flange 21 is mounted in the tank body, and the installation deviation of waveguide pipe and guided wave pipe flange is less than ± 1 °.It will by flange
Radar level gauge and waveguide pipe are separately mounted in tank body, easy to disassemble.The guided wave pipe flange 21 has to be arranged in parallel up and down
Two, two guided wave pipe flanges 21 are attached fixation by several connection bolts 23.Wherein, the guided wave pipe flange choosing
With stainless steel 904L material, wall thickness 3-6mm, outer diameter 150-200mm are machined with waterline in the disk of guided wave pipe flange, by two
A waveguide pipe banjo clip utilizes waterline and the sealing structure in it and knot loaded on crystallization water-flushing device and/or radar flange two sides
Brilliant water-flushing device or radar flange are connected and sealed.
Be not any waveguide pipe internal diameter can meet demand, in order to make signal shielding effect and level gauging result
More preferably, the present embodiment is defined the internal diameter of waveguide pipe, and the internal diameter of the waveguide pipe is less than or equal to the guided wave pipe flange
Diameter.
The principle of the device measurement liquid level of the Antenna Type radar level gauge guided wave measurement liquid level of the present embodiment is the antenna
Formula radar level gauge issues high-frequency impulse using probe, is reflected when pulse encounters surface of material by the receiver in instrument
It receives, and converts level signal for distance signal.The very low extremely short microwave pulse of radar level gauge emitted energy passes through day
Linear system system emits and receives, and since space is larger in tank body, the microwave pulse that radar level gauge issues is easily lost, and antenna
It is exposed in tank body, be easy by solution influenced in tank body surface crystallization, influence sending and receiving for microwave signal, waveguide pipe can
Antenna to be set in it, microwave pulse can be sent along waveguide pipe, and microwave signal is avoided to lose, and crystallizing flusher can
To guarantee that the crystallization on guided wave inside pipe wall and antenna is removed in real time, avoid influencing sending and receiving for microwave signal.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise clear
It is specific to limit.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level, for measuring tank level, which is characterized in that including
Radar level gauge and waveguide pipe, the radar level gauge are mounted in the tank body, and the radar level gauge is connected with antenna, institute
It states waveguide pipe to be mounted in the tank body and be set on the outside of the antenna, offering in the waveguide pipe makes external solution in waveguide pipe
The intercommunicating pore of position balance.
2. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level according to claim 1, which is characterized in that described
Waveguide pipe is vertically arranged and lower end is connected with reflection elbow.
3. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level according to claim 1, which is characterized in that described
Crystallization flusher is connected with below radar level gauge, the crystallization flusher includes the water inlet and Xiang Suoshu for connecting external water source
It is sprayed water in waveguide pipe to clean the water outlet of the antenna or the waveguide pipe inner sidewall.
4. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level according to claim 3, which is characterized in that described
It crystallizes flusher in a ring and is set in the waveguide pipe, the water inlet is located at the outer ring side wall of the crystallization flusher
On, the water outlet is located on the interior ring-side wall of the crystallization flusher.
5. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level according to claim 4, which is characterized in that described
Water outlet is multiple and uniformly distributed on the interior ring-side wall of the crystallization flusher.
6. according to a kind of any one of claim 3 to 5 device of Antenna Type radar level gauge guided wave measurement liquid level, feature
It is, the water outlet is the inclined hole being obliquely installed upward or downward, to be sprayed against on the antenna.
7. according to a kind of any one of claim 3 to 5 device of Antenna Type radar level gauge guided wave measurement liquid level, feature
It is, the water inlet is connected with scouring electromagnetic valve.
8. according to a kind of any one of claim 3 to 5 device of Antenna Type radar level gauge guided wave measurement liquid level, feature
It is, the crystallization flusher includes upper housing and lower case, it is respectively equipped with maze-type structure in the upper housing and lower case,
The upper housing and lower case setting symmetrical above and below and being detachably connected makes its internal form hollow labyrinth type water channel.
9. according to claim 1 to a kind of any one of 5 devices of Antenna Type radar level gauge guided wave measurement liquid level, feature
It is, the radar level gauge is mounted in the tank body by radar flange, and the waveguide pipe is installed by guided wave pipe flange
In the tank body.
10. a kind of device of Antenna Type radar level gauge guided wave measurement liquid level according to claim 9, which is characterized in that institute
The internal diameter for stating waveguide pipe is less than or equal to the diameter of the guided wave pipe flange.
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| CN110220570A (en) * | 2019-07-11 | 2019-09-10 | 中国航空工业集团公司雷华电子技术研究所 | A kind of waveguide type radar level gauge of integrated temperature transmitter |
| CN112337891A (en) * | 2020-11-26 | 2021-02-09 | 成都锦江电子系统工程有限公司 | Portable waveguide inner cavity ultrasonic cleaning device |
| CN113138000A (en) * | 2020-01-20 | 2021-07-20 | 中国石油天然气股份有限公司 | Microwave non-contact liquid level measurement simulator |
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