CN106645246A - Neutron material level meter and delayed coking liquid level analysis system - Google Patents
Neutron material level meter and delayed coking liquid level analysis system Download PDFInfo
- Publication number
- CN106645246A CN106645246A CN201710059410.7A CN201710059410A CN106645246A CN 106645246 A CN106645246 A CN 106645246A CN 201710059410 A CN201710059410 A CN 201710059410A CN 106645246 A CN106645246 A CN 106645246A
- Authority
- CN
- China
- Prior art keywords
- neutron
- level meter
- explosion
- transmitter
- resistant enclosure
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/074—Investigating materials by wave or particle radiation secondary emission activation analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/106—Different kinds of radiation or particles neutrons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Measurement Of Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a neutron material level meter and a delayed coking liquid level analysis system. The neutron material level meter comprises a shell body, wherein an opening is formed in the front side of the shell body; a baffle with an air vent is formed in the rear side of the shell body; a supporting frame is arranged on the inner side of the shell body; a transmitter explosion-proof shell is arranged at the top of the supporting frame; a transmitter connected with a neutron material level meter main engine is arranged in the transmitter explosion-proof shell; two neutron detector explosion-proof shells are arranged below the transmitter explosion-proof shell, wherein at least one neutron detector explosion-proof shell is internally provided with a helium-3 pipe connected with the transmitter; a neutron radioactive source mounting shell is arranged between the two neutron detector explosion-proof shells; a neutron radioactive source mounting hole is formed in the top of the shell body; a hole cover capable of being opened and closed is arranged on the neutron radioactive source mounting hole. According to the neutron material level meter disclosed by the invention, a scattering and moderation principle of neutrons in a hydrogen-containing medium is used for distinguishing a dynamic distribution rule of states of all materials in a tower; an upper-layer real-time height indication value of a coke layer is given under the matching of a tower-bottom oil injection starting signal.
Description
Technical field
The present invention relates to oil processing equipment technical field, it particularly relates to a kind of neutron material-level meter and delayed coking
Liquid level analysis system.
Background technology
Delayed coking is a kind of oil secondary operation technology, is referred to the mink cell focus of lean hydrogen as raw material, in high temperature（About 500
℃）The thermal cracking and condensation reaction of depth are carried out, the technology of rich gas, raw gasoline, diesel oil, wax oil and coke is produced.It is the world
One of main method of residual oil deep processing, disposal ability accounts for 1/3rd of residual oil disposal ability.Existing delayed coking liquid
Position analysis system can not be calculated well on coke layer along real-time height value, so that inefficiency, while easily going out
Existing safety problem.
For the problem in correlation technique, effective solution is not yet proposed at present.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of neutron material-level meter and delayed coking liquid level point
Analysis system, can solve the problem that above-mentioned technical problem.
To realize above-mentioned technical purpose, the technical scheme is that what is be achieved in that：
A kind of neutron material-level meter, including housing, are provided with the opening for outlet and maintenance, the housing on front side of the housing
Rear side be provided with baffle plate, the baffle plate is provided with several and the air vent being connected on the inside of housing, the inner side of the housing
Bracing frame is provided with, transmitter explosion-resistant enclosure is provided with the top of support frame as described above, the inside of the transmitter explosion-resistant enclosure is provided with change
Device, the transmitter is sent to be connected with neutron material-level meter main frame by wire；Two are provided with below the transmitter explosion-resistant enclosure
The individual neutron detector explosion-resistant enclosure being connected with support frame as described above, wherein, the inside of at least one neutron detector explosion-resistant enclosure
The pipe of helium three is provided with, the pipe of the helium three is connected by wire with the transmitter；Described two neutron detector explosion-resistant enclosures it
Between be provided with the neutron radiation source that is connected with support frame as described above shell be installed, the neutron radiation source is installed inside the shell and is provided with neutron and puts
Source is penetrated, the top of the housing is installed shell corresponding section and is provided with neutron radiation source installing hole with the neutron radiation source, described
Neutron radiation source installing hole is provided with port lid to be opened/closed.
Further, transmitter explosion-resistant enclosure ring flange, the transmitter are provided with front side of the transmitter explosion-resistant enclosure
Explosion-resistant enclosure ring flange be provided with the first connector and with the second connector of the neutron detector explosion-resistant enclosure quantity identical,
The transmitter is connected by wire and the first connector with neutron material-level meter main frame；Described two neutron detectors are explosion-proof
Neutron detector explosion-resistant enclosure ring flange is equipped with front side of shell, the neutron detector explosion-resistant enclosure ring flange is provided with
Joint among three members, the pipe of the helium three is connected by wire, joint among three members and the second connector with the transmitter.
Further, support frame as described above includes the first support for placing transmitter explosion-resistant enclosure, the first support
Inner side be provided with for placing the second support that shell is installed in neutron detector explosion-resistant enclosure and neutron radiation source.
Further, the wire adopts shielding line, and on the outside of the wire spool is provided with away.
Further, the air vent is circle, triangle, rectangle or star.
Further, it is further equipped with the special neutron radiation source being engaged with neutron radiation source installing hole and port lid
Mounting and dismounting tool.
A kind of delayed coking liquid level analysis system with neutron material-level meter described above, the delayed coking liquid level analysis
System includes that the first coke drum and the top and middle part of the second coke drum, first coke drum and the second coke drum are respectively connected with
Neutron material-level meter, the neutron material-level meter is connected with neutron material-level meter main frame.
Further, the bottom of first coke drum and the second coke drum is respectively connected with neutron material-level meter, the neutron
Level-sensing device is connected with the neutron material-level meter main frame.
Further, the neutron material-level meter being connected with first coke drum is connected with the first slave computer by wire,
The neutron material-level meter being connected with second coke drum is connected with the second slave computer by wire；First slave computer and
Wired or wireless connection between two slave computers and the neutron material-level meter main frame.
Further, the neutron material-level meter main frame is in Central Control Room.
Beneficial effects of the present invention：
（1）Neutron material-level meter of the present invention is uniquely to be detected simultaneously by the various materials shape such as oil gas, foam, coke and water
State and the instrument of material interface change；
（2）Neutron material-level meter of the present invention can continuously detect change of the material containing H, C density, be accurately judged to delayed coking
Oil gas, foam, four kinds of states of coke and water, intuitively represent material state and Density Distribution situation in tower, are conducive to production technology
Personnel's analysis process control parameter and oil product are to green coke foaming process and coke quality；
（3）The present invention can provide accurate material interface and indicate, equivalent to the tomoscan or hologram of coke drum, have
The opportunity for adding defoamer is grasped beneficial to Instructing manufacture technologist, is increased economic efficiency；
（4）The present invention is conducive to guaranteeing safe production, and prevents the entrainment of coke powder in foam roof fall, control oil gas；
（5）The present invention can extend delayed coking system on-stream time, shorten cycle period, reduce outage, improve coking tower and utilize
Rate；
（6）The present invention meets《Radiation health protection standard containing sealed source instrument》Equations of The Second Kind is required in GB16368-1996.One
It is the half of non-radioactive behaviour area dosage limits value at rice, allows personnel to pass through in one meter.Neutron material-level meter of the present invention
Ray only irradiates the hemispherical of 1 meter of tower inside radius, and dose equivalent rate is less than 1.8 μ Sv/h at 1 meter, is already belonging to non-radioactive workspace,
Close size selective sampling at 3 meters.The present invention has selected the minimum radioactive source met under use requirement, to surrounding environment influence journey
Degree is minimum；
（7）The present invention is under emergency rating（Catch fire）, it is only 1.8 μ Sv/ away from radiation dose equivalent rate at 1 meter of the neutron source for coming off
H, if someone stops 500 hours herein, dosage of the exposure for being received still less than the public 1mSv/ of international regulations
Equivalent rates limits value, is more easy to take emergency measures than caesium source（Area of isolation is little, easy transfer）；
（8）Neutron material-level meter of the present invention is provided with the baffle plate with air vent, and the baffle plate can block working site
The various sprinkle liquid at dust, rainwater and scene；Air vent on baffle plate can play a part of ventilation and heat, while very
It is attractive in appearance, firm；
（9）Neutron material-level meter of the present invention is provided with neutron radiation source installing hole, and the neutron radiation source installing hole is provided with
Port lid to be opened/closed, when port lid is opened, to can make tool and enter case inside dismounting neutron radiation source from neutron radioactive source installing hole；
When port lid is closed, the effect of blocking can be acted；
（10）Neutron material-level meter of the present invention equipped with special neutron radiation source mounting and dismounting tool, the special neutron radiation
Source mounting and dismounting tool is engaged with neutron radiation source installing hole and port lid, port lid can be opened and closed, by neutron radiation
Source installing hole enters into case inside, and then dismounts the neutron radiation source that inside the shell is installed in neutron radiation source；The special neutron is put
The source mounting and dismounting tool of penetrating can will set up one section of safe distance between people and neutron radiation source, advantageously ensure that operating personnel
It is healthy and safe, while and can flexibly dismount neutron radiation source.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the top view of the internal structure of neutron material-level meter described according to embodiments of the present invention；
Fig. 2 is the top view of neutron material-level meter described according to embodiments of the present invention；
Fig. 3 is the sectional view of the rearview of neutron material-level meter described according to embodiments of the present invention；
Fig. 4 is the rearview one of neutron material-level meter described according to embodiments of the present invention；
Fig. 5 is the rearview two of neutron material-level meter described according to embodiments of the present invention；
Fig. 6 is the rearview three of neutron material-level meter described according to embodiments of the present invention；
Fig. 7 is the rearview four of neutron material-level meter described according to embodiments of the present invention；
Fig. 8 is neutron material-level meter detector wiring diagram according to embodiments of the present invention；
Fig. 9 is the structural representation one of delayed coking liquid level analysis system described according to embodiments of the present invention；
Figure 10 is the structural representation two of delayed coking liquid level analysis system described according to embodiments of the present invention；
Figure 11 is the wiring diagram of the first slave computer according to embodiments of the present invention and the second slave computer and neutron material-level meter main frame；
Figure 12 is the wiring diagram of slave computer cabinet according to embodiments of the present invention.
In figure：
1st, housing；2nd, first support；3rd, second support；4th, transmitter explosion-resistant enclosure；5th, neutron detector explosion-resistant enclosure；6th, neutron
Radioactive source installs shell；7th, neutron detector explosion-resistant enclosure ring flange；8th, transmitter explosion-resistant enclosure ring flange；9th, the first connection
Head；10th, the second connector；11st, joint among three members；12nd, the first coke drum；13rd, the second coke drum；14th, neutron material-level meter；15、
First slave computer；16th, the second slave computer；17th, neutron material-level meter main frame；18th, Central Control Room；19th, neutron radiation source installing hole；20、
Baffle plate；21st, air vent.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belongs to present invention protection
Scope.
As shown in figures 1-8, a kind of neutron material-level meter described according to embodiments of the present invention, including housing 1, the housing 1
Front side be provided with opening for outlet and maintenance, the rear side of the housing 1 is provided with baffle plate 20, if the baffle plate 20 is provided with
The dry air vent 21 being connected with the inner side of housing 1, the inner side of the housing 1 is provided with bracing frame, the top of support frame as described above
Be provided with transmitter explosion-resistant enclosure 4, the inside of the transmitter explosion-resistant enclosure 4 is provided with transmitter, the transmitter by wire with
Neutron material-level meter main frame 17 is connected；The lower section of the transmitter explosion-resistant enclosure 4 is provided with two and is connected with support frame as described above
Sub- detector explosion-resistant enclosure 5, wherein, the inside of at least one neutron detector explosion-resistant enclosure 5 is provided with the pipe of helium three, and the helium three is managed
It is connected with the transmitter by wire；It is provided between described two neutron detector explosion-resistant enclosures 5 and support frame as described above phase
Shell 6 is installed in neutron radiation source even, and the neutron radiation source is installed in shell 6 and is provided with neutron radiation source, the top of the housing 1
Portion installs the corresponding section of shell 6 and is provided with neutron radiation source installing hole 19 with the neutron radiation source, and the neutron radiation source is installed
Hole is provided with port lid to be opened/closed.
Wherein, the air vent 21 on baffle plate can also be not of uniform size, and quantity is not limited, different, and mutual spacing is not limited,
As long as not destorying entire sturdy；If the size of air vent 21 is larger, the quantity of air vent 21 can be less, and shape can be answered more
It is miscellaneous；If the size of air vent 21 is less, the quantity of air vent 21 can be some more, and shape can be more simple.
In one particular embodiment of the present invention, to be provided with transmitter explosion-proof outer for the front side of the transmitter explosion-resistant enclosure 4
Shell ring flange 8, the transmitter explosion-resistant enclosure ring flange 8 is provided with the first connector 9 and explosion-proof with the neutron detector outer
The second connector of quantity identical 10 of shell 5, the transmitter is by wire and the first connector 9 and neutron material-level meter main frame 17
It is connected；The front side of described two neutron detector explosion-resistant enclosures 5 is equipped with neutron detector explosion-resistant enclosure ring flange 7, described
Neutron detector explosion-resistant enclosure ring flange 7 is provided with joint among three members 11, the pipe of the helium three by wire, joint among three members 11 with
And second connector 10 be connected with the transmitter.
In one particular embodiment of the present invention, support frame as described above include for place transmitter explosion-resistant enclosure 4
One support 2, the inner side of the first support 2 is provided with for placing neutron detector explosion-resistant enclosure 5 and neutron radiation source peace
The second support 3 of casing 6.
In one particular embodiment of the present invention, the wire adopts shielding line, and on the outside of the wire cabling is provided with
Pipe.
In one particular embodiment of the present invention, the shape of cross section of the housing 1 can curved, semicircle, half olive
The arbitrary shapes such as olive shape, triangle.
In one particular embodiment of the present invention, the air vent 21 is circle, triangle, rectangle or star.
In one particular embodiment of the present invention, special neutron radiation source mounting and dismounting tool is further equipped with, this is special
Neutron radiation source mounting and dismounting tool is engaged with neutron radiation source installing hole 19 and port lid, can be opened and closed port lid, leads to
Cross neutron radiation source installing hole 19 and enter into case inside, dismount the neutron radiation source that neutron radiation source is installed in shell 6.
As shown in figure 9, a kind of delayed coking liquid level analysis system with neutron material-level meter described above, the delay coke
Changing liquid level analysis system includes the first coke drum 12 and the second coke drum 13, the coke drum 13 of first coke drum 12 and second
Top and middle part are respectively connected with neutron material-level meter 14, and the neutron material-level meter 14 is connected with neutron material-level meter main frame 17.
As shown in figs. 10-12, in one particular embodiment of the present invention, the coke drum of first coke drum 12 and second
13 bottom is respectively connected with neutron material-level meter 14, and the neutron material-level meter 14 is connected with the neutron material-level meter main frame 17.
In one particular embodiment of the present invention, the neutron material-level meter 14 being connected with first coke drum 12 passes through
Wire is connected with the first slave computer 15, and the neutron material-level meter 14 being connected with second coke drum 13 is connected with by wire
Two slave computers 16；It is wired or wireless between the slave computer 16 of first slave computer 15 and second and the neutron material-level meter main frame 17
Connection.
In one particular embodiment of the present invention, the neutron material-level meter main frame 17 is in Central Control Room 18.
In one particular embodiment of the present invention, the neutron radiation source is the Pu-Be or Am-Be of 0mCi～300mCi
Neutron radiation source（Dosage is most widely suited with 50mCi or so）.Detector is efficient proportional counter tube.Volume, efficiency etc. are according to survey
Amount requires special design.Slow neutron signal is received, electric impulse signal is converted into.Transmitter is used for pick-up probe pulse signal,
Amplified using high magnification numbe, high stable is screened, formation system circuit.With high stable high voltage power supply.The pulse letter of transmitter output
Number, the acceptable pulse signal of slave computer being converted into by signal transducer and is sent to slave computer, slave computer possesses n roads A/D and D/
A, n railway digital amount is input into, the output of n railway digitals amount（N is less than 256）.The input of slave computer n railway digitals amount receives the change of upper, middle and lower three
Send device to pass through the pulse signal and bottom of towe oiling initial signal of conversion, calculate material position, send monitoring Computer display（N is less than
256）.Neutron material-level meter main frame 17 adopts dual output video card, and separately matches somebody with somebody display 1.Outfit standard industry control rack and necessary
Mounting bracket, bolt, stainless steel flexible hose, special radioactive source installation tool and related other installation annexes.
Neutron material-level meter 14 of the present invention is after installing first, after major maintenance, after normal operation 3 months, need
Demarcated.During demarcation, in void tower background is demarcated；When tower body fills water, it is demarcated as water, that is, completes to demarcate.Each test point
Supplemental characteristic should record and put on record.
If background and fullness parameters are excessive than last time calibration offset, calibration process observed data can be repeated several times, really
When having relatively large deviation, it is considered as near test point whether having bridging phenomenon, for example the icicle in tower wall sizing and winter.When it is determined that number
According to really deviation when, be considered as relevant parameter whether need adjust, should during next oiling, observe tendency chart simultaneously
Coupling system daily record and historical data to relevant parameter being finely adjusted.Due to these ginsengs（N is less than 256）Number fault-tolerance is splendid,
So only need to be verified without the need for adjustment when affecting little.
During cold Jiao, upper detection point can refer to delayed coking liquid level analysis system of the present invention as water filling
Show, start when upper detection point is reached and change water overflow or the burnt operation of bubble of cutting off the water.In draining, lower detection points can be put as water
Empty reference conditions.The different parts test point of neutron material-level meter may also participate in in process concatenation control.
Neutron material-level meter of the present invention includes various arranging schemes, specially：
First, 4 points of double tower：
Sometimes for cost-effective, each tower only installs two（Above, in）, remove a test point, point is generally descended, it is referred to as double
4 points of tower, typically saves complete for 4 points of double tower.
2nd, 6 points of double tower：
Neutron material-level meter is usually used on two coke drums, and each tower installs three（Upper, middle and lower）, totally six, referred to as double tower six
Point, general standard is complete for 6 points of double tower.
3rd, 8 points of double tower
Sometimes for fine detection, each coke drum installs four points（Upper, middle and lower, pouring orifice）, totally eight points, referred to as double tower
It is 8 points, general fine complete for 8 points of double tower.
4th, special matched combined：
The operational version of several situations, can freely match except more than.For example：Four coke drums of some detailed design of chemical plant, each
Tower installs three, and totally 12 points, be ten two points of four tower.
Understand for convenience the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical scheme is described in detail.
When specifically used, referred to according to neutron material-level meter of the present invention and delayed coking material position/liquid level resolution, analysis
Show system, the material state of a certain height mainly for detection of delayed coking unit or referred to as in coke drum.I.e. a certain in tower
The material at highly a certain moment is water, coke, foam or gas.
The present invention uses Am-Be (or Pu-Be) the neutron radiations source of 0mCi～300mCi（Dosage is with 50mCi or so
It is most widely suited）.The neutron yield in Am-Be (or Pu-Be) neutron radiations source is 2.2 × 106 neutron/seconds, equal along 4 π directions
Cloth.The average neutron energy that Am-Be (or Pu-Be) neutron radiations source produces is 5.49MeV.This fast neutron and atomic number compared with
Little atom, particularly hydrogen atom are easy to elastic collision, by energy transfer to hydrogen atom, Jing after multiple impacts by " slow
Change ", become low-energy " slow neutron "；By fast neutron become slow neutron or thermal neutron-with neighboring atom nuclear heat kinergety phase
The neutron of balance, when with non-hydrogen atom nuclear interaction, it may also happen that other kinds of mutual in addition to elastic scattering is carried out
Effect.But every time in interaction process, comparatively the energy of neutron loss is greater not as interacting with proton, because
And fast neutron can penetrate farther in non-hydrogen medium.That is, during fast neutron has little time to become slow in non-hydrogen medium, also
Son, it is possible to lose by other means.Using neutron containing this distinctive slowing down effect in hydrogen medium, so that it may really
Determine the density size of hydrogen nuclei around neutron radiation source.
There is elastic collision through the hydrogen nuclei in medium in coke drum walls, with tower in the fast neutron of neutron radiation source radiation
Hit.Fast neutron passes to hydrogen nuclei because of its energy by elastic collision, and becomes slow neutron, outside slow neutron reflection to tower wall
Around slow neutron detector, received by slow neutron detector.
Receiver adopts efficient slow neutron detector（He3 proportional counter tubes）, the helium atomic nucleus in slow neutron and detector
Collision, produces powered particle, and charged particle produces electric pulse, forms step-by-step counting in electric field motion.What receiver was detected
Slow -neutron flux at step-by-step counting and receiver（By the number of neutrons of unit area in unit interval）It is proportional, tower
The density of interior material institute hydrogen atoms and slow -neutron flux proportion relation.Due to inject tower in residual oil mainly by carbon,
Protium is constituted, therefore the density of material in tower can be obtained by slow -neutron flux.
Under on tower, in, the receiver of upper each material-level measure point will the signal that received amplify, after shaping, by shielding
Cable is passed to slave computer instrument and is processed, and slave computer instrument changes into corresponding percentage density according to the step-by-step counting for measuring
Signal（4 ~ 20mA correspondence density 0 ~ 100%）, and pass to industrial computer, industrial computer according under, in, upper each material-level measure dot density letter
Number variation tendency determines the particular location of each interface extrapolating gas in coke, foam, coke and the height of water, is given
Under on tower, in, in the percentage density of upper each material-level measure point and tower each interface position instruction, and corresponding data are passed
To client.
In sum, by means of the above-mentioned technical proposal of the present invention, the scattering, slowing down using neutron in containing hydrogen medium is former
Reason, determines the state and density of material in the devices such as batch can, tower containing protium material, and material is gas phase, bubble in decision maker
Foam or liquid-solid phase, and the quantitative data of material density is given, it is by company of the material in STRENGTH ON COKE tower specific region containing H, C density
Continuous measurement, analyzes the dynamic distribution of whole material states (oil gas, foam, coke or water) in tower, and in bottom of towe oiling
Initial signal is given under coordinating, on coke layer along real-time height indicated value, to realize that the production real-time online of coking controls to provide
Information.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of neutron material-level meter, including housing（1）, it is characterised in that the housing（1）Front side be provided with for outlet and
The opening of maintenance, the housing（1）Rear side be provided with baffle plate（20）, the baffle plate（20）It is provided with several and housing（1）'s
The air vent that inner side is connected（21）, the housing（1）Inner side be provided with bracing frame, transmitter is provided with the top of support frame as described above
Explosion-resistant enclosure（4）, the transmitter explosion-resistant enclosure（4）Inside be provided with transmitter, the transmitter is by wire and neutron material
Position meter main frame（17）It is connected；The transmitter explosion-resistant enclosure（4）Lower section be provided with two neutrons being connected with support frame as described above
Detector explosion-resistant enclosure（5）, wherein, at least one neutron detector explosion-resistant enclosure（5）Inside be provided with the pipe of helium three, the helium three
Pipe is connected by wire with the transmitter；Described two neutron detector explosion-resistant enclosures（5）Between be provided with and the support
Frame connected neutron radiation source is installed by shell（6）, shell is installed in the neutron radiation source（6）Neutron radiation source is inside provided with, it is described
Housing（1）Top and the neutron radiation source install shell（6）Corresponding section is provided with neutron radiation source installing hole（19）, it is described
Neutron radiation source installing hole（19）It is provided with port lid to be opened/closed.
2. neutron material-level meter according to claim 1, it is characterised in that the transmitter explosion-resistant enclosure（4）Front side set
There is transmitter explosion-resistant enclosure ring flange（8）, the transmitter explosion-resistant enclosure ring flange（8）It is provided with the first connector（9）And with
The neutron detector explosion-resistant enclosure（5）The connector of quantity identical second（10）, the transmitter is by wire and first
Connector（9）With neutron material-level meter main frame（17）Be connected-；Described two neutron detector explosion-resistant enclosures（5）Front side be all provided with
There is neutron detector explosion-resistant enclosure ring flange（7）, the neutron detector explosion-resistant enclosure ring flange（7）It is provided with joint among three members
（11）, the pipe of the helium three is by wire, joint among three members（11）And second connector（10）It is connected with the transmitter.
3. neutron material-level meter according to claim 2, it is characterised in that support frame as described above includes preventing for placing transmitter
Quick-fried shell（4）First support（2）, the first support（2）Inner side be provided with for placing neutron detector explosion-resistant enclosure
（5）And shell is installed in neutron radiation source（6）Second support（3）.
4. neutron material-level meter according to claim 3, it is characterised in that the wire adopts shielding line, the wire
Outside is provided with away spool.
5. neutron material-level meter according to claim 4, it is characterised in that the air vent（21）For circle, triangle, square
Shape or star.
6. the neutron material-level meter according to any one of claim 1-5, it is characterised in that be further equipped with being put with the neutron
Penetrate source installing hole（19）And the special neutron radiation source mounting and dismounting tool that port lid is engaged.
7. a kind of delayed coking liquid level analysis system of the neutron material-level meter with described in any one of claim 1-6, described to prolong
Late coking liquid level analysis system includes the first coke drum（12）With the second coke drum（13）, it is characterised in that first coke
Tower（12）With the second coke drum（13）Top and middle part be respectively connected with neutron material-level meter（14）, the neutron material-level meter（14）Even
It is connected to neutron material-level meter main frame（17）.
8. delayed coking liquid level analysis system according to claim 7, it is characterised in that first coke drum（12）With
Second coke drum（13）Bottom be respectively connected with neutron material-level meter（14）, the neutron material-level meter（14）With the neutron material-level meter
Main frame（17）It is connected.
9. delayed coking liquid level analysis system according to claim 8, it is characterised in that with first coke drum（12）
The neutron material-level meter being connected（14）First slave computer is connected with by wire（15）, with second coke drum（13）It is connected
Neutron material-level meter（14）Second slave computer is connected with by wire（16）；First slave computer（15）With the second slave computer
（16）With the neutron material-level meter main frame（17）Between wired or wireless connection.
10. delayed coking liquid level analysis system according to claim 9, it is characterised in that the neutron material-level meter main frame
（17）Located at Central Control Room（18）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059410.7A CN106645246B (en) | 2017-01-24 | 2017-01-24 | Neutron level gauge and delayed coking liquid level analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059410.7A CN106645246B (en) | 2017-01-24 | 2017-01-24 | Neutron level gauge and delayed coking liquid level analysis system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106645246A true CN106645246A (en) | 2017-05-10 |
| CN106645246B CN106645246B (en) | 2023-08-22 |
Family
ID=58842367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710059410.7A Active CN106645246B (en) | 2017-01-24 | 2017-01-24 | Neutron level gauge and delayed coking liquid level analysis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106645246B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499380A (en) * | 1982-10-21 | 1985-02-12 | Esso Resources Canada, Ltd. | Apparatus and method for determining the hydrogen content of a substance |
| CN87106698A (en) * | 1986-09-03 | 1988-03-23 | 卡尔斯鲁厄核子研究中心股份公司 | Apparatus for measuring charge level |
| US4870278A (en) * | 1988-06-08 | 1989-09-26 | Shell Oil Company | Wide-range fluid level detector |
| US4884288A (en) * | 1985-12-31 | 1989-11-28 | Commonwealth Scientific And Industrial Research Organization | Neutron and gamma-ray moisture assay |
| CN1773267A (en) * | 2005-11-09 | 2006-05-17 | 南京大学 | Method for measuring non-calibrating neutron water content |
| CN2869804Y (en) * | 2005-10-10 | 2007-02-14 | 中国石油天然气股份有限公司 | Large coke tower material level continuous measuring device |
| CN101661533A (en) * | 2009-09-29 | 2010-03-03 | 浙江中控软件技术有限公司 | Predict method of procedure parameter in coke forming technology and device thereof |
| CN202075014U (en) * | 2010-12-24 | 2011-12-14 | 薛鸿军 | Neutron material-level detection system direct towards a container with super large jar diameter and large thickness |
| CN102374999A (en) * | 2010-08-06 | 2012-03-14 | 思姆菲舍尔科技公司 | Increase of neutron flux with gamma shielding |
| CN206431072U (en) * | 2017-01-24 | 2017-08-22 | 北京华科拓普电子仪器有限公司 | A kind of neutron material-level meter and delayed coking liquid level analysis system |
-
2017
- 2017-01-24 CN CN201710059410.7A patent/CN106645246B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499380A (en) * | 1982-10-21 | 1985-02-12 | Esso Resources Canada, Ltd. | Apparatus and method for determining the hydrogen content of a substance |
| US4884288A (en) * | 1985-12-31 | 1989-11-28 | Commonwealth Scientific And Industrial Research Organization | Neutron and gamma-ray moisture assay |
| CN87106698A (en) * | 1986-09-03 | 1988-03-23 | 卡尔斯鲁厄核子研究中心股份公司 | Apparatus for measuring charge level |
| US4870278A (en) * | 1988-06-08 | 1989-09-26 | Shell Oil Company | Wide-range fluid level detector |
| CN2869804Y (en) * | 2005-10-10 | 2007-02-14 | 中国石油天然气股份有限公司 | Large coke tower material level continuous measuring device |
| CN1773267A (en) * | 2005-11-09 | 2006-05-17 | 南京大学 | Method for measuring non-calibrating neutron water content |
| CN101661533A (en) * | 2009-09-29 | 2010-03-03 | 浙江中控软件技术有限公司 | Predict method of procedure parameter in coke forming technology and device thereof |
| CN102374999A (en) * | 2010-08-06 | 2012-03-14 | 思姆菲舍尔科技公司 | Increase of neutron flux with gamma shielding |
| CN202075014U (en) * | 2010-12-24 | 2011-12-14 | 薛鸿军 | Neutron material-level detection system direct towards a container with super large jar diameter and large thickness |
| CN206431072U (en) * | 2017-01-24 | 2017-08-22 | 北京华科拓普电子仪器有限公司 | A kind of neutron material-level meter and delayed coking liquid level analysis system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106645246B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Copi et al. | Comparing interaction rate detectors for weakly interacting massive particles with annual modulation detectors | |
| CN103680650B (en) | Boron concentration meter for nuclear power station and scaling method thereof | |
| CN101685678A (en) | Vibration monitoring system of reactor and reactor internals | |
| Cameron et al. | Radioisotope Instruments: International Series of Monographs in Nuclear Energy | |
| CN206431072U (en) | A kind of neutron material-level meter and delayed coking liquid level analysis system | |
| CN104747179A (en) | Stratum density measuring while drilling instrument based on deuterium-tritium accelerator neutron source | |
| CN206459751U (en) | A kind of infrared temperature monitor | |
| CN204009085U (en) | A kind of nuclear power plant hydrogeneous waste gas radioactivity continuous monitoring device | |
| CN107727067A (en) | A kind of gas chamber cabinet position piston inclination measuring system | |
| CN111337968A (en) | Radiation monitoring system | |
| CN106645246A (en) | Neutron material level meter and delayed coking liquid level analysis system | |
| CN110517799A (en) | Nuclear power plant's reactor core Nuclear Instrument system | |
| CN110333547A (en) | A kind of neutron back scattering imaging device for plasticity mine detection | |
| CN206710614U (en) | The measuring system of radioactivity inert gas | |
| CN205541303U (en) | A crack and video linkage monitoring and early warning all -in -one for geology disaster monitoring | |
| CN206252342U (en) | Article-storage device and cooking utensils | |
| Fehlau | An applications guide to vehicle SNM monitors | |
| CN107167830B (en) | A kind of radiation monitoring system based on CT scan device | |
| CN109297566A (en) | A kind of auto-alarming guide wave radar liquid level gauge | |
| CN209342194U (en) | A kind of auto-alarming guide wave radar liquid level gauge | |
| CN208255095U (en) | A kind of vacant analysis system | |
| Wen et al. | Neutronic analysis and measurement performance assessment of ITER neutron flux monitor system | |
| WO2013189126A1 (en) | Method related to improving signal-to-noise ratio in passive nucleonic level gauge | |
| Chen et al. | A FPGA based data acquisition system for research reactor operational monitoring | |
| US20170206987A1 (en) | Gravity-based, non-invasive reactor system and method for coolant inventory monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |