CN110314456A - For the radioactive spent resin effective filter that treated is vented - Google Patents
For the radioactive spent resin effective filter that treated is vented Download PDFInfo
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- CN110314456A CN110314456A CN201910616927.0A CN201910616927A CN110314456A CN 110314456 A CN110314456 A CN 110314456A CN 201910616927 A CN201910616927 A CN 201910616927A CN 110314456 A CN110314456 A CN 110314456A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/208—Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to Radwastes treatment equipment technical field, it is specially a kind of for radioactive spent resin treated exhaust effective filter, including, by-pass filtration body, for radioactive spent resin treated exhaust row primary filter；Secondary filtration body, including second housing body, second housing body upper end are provided with end cap, partition is horizontally arranged in second housing body, separator edge position is provided with several air holes, carries out secondary filter in the space below gas barrier, third time filtering is carried out in the space above partition；Detect cylinder, including third outer housing, radgas detection device is provided in third outer housing, enter in detection cylinder by filtered gas, radgas detection device carries out radiological measuring to filtered gas, and will test data and be transferred to controller processing, when detected value is lower than threshold values, it is discharged, when detected value is higher than threshold values, is passed through in the first outer housing by pipeline and is filtered again.
Description
Technical field
The invention belongs to Radwastes treatment equipment technical field, after specially a kind of processing for radioactive spent resin
Exhaust effective filter.
Background technique
Radioactive waste refers to radioactive wastewater, exhaust gas and solid waste.As atomic energy industry development and radioactivity are same
Position generally becomes to being widely applied, and radioactive waste increases increasingly, such as without handling or dealing with improperly and outlet, environment can be made to be put
Radioactive pollution not only influences the growth of animals and plants, deteriorates water body, and be detrimental to health, or even generates adverse effect to offspring.
Currently, existing for the radioactive spent resin filter device that treated is vented, filter effect is undesirable, simultaneously
Without radgas detection device, radiological measuring cannot be carried out to filtered gas, and be determined according to detection structure
Direct emission still filters again.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides it is a kind of for radioactive spent resin treated exhaust it is efficient
Filter device, including,
By-pass filtration body, including the first outer housing, first outer housing lower end are provided with the first air inlet, and described first
Outer housing upper end is provided with the first gas outlet, and the position of corresponding first gas outlet is vertically arranged inside first outer housing
There are the first netted cylinder and the second netted cylinder, the second netted cylinder is nested on the outside of the described first netted cylinder, described
Filter medium is filled between first netted cylinder and the second netted cylinder；
Secondary filtration body, including second housing body, second housing body lower end are provided with the second air inlet, and described second
Air inlet is connected by first pipe with first air outlet, and second housing body upper end is provided with end cap, the end
Lid is threadedly coupled with the second housing body, partition is horizontally arranged in the second housing body, the separator edge position is set
Several air holes are equipped with, are equipped with cylindrical aperture foamed aluminium, the bottom side middle position of the Open-cell Aluminum Foam below the partition
Place is equipped with air inlet slot, and the outlet side of the first pipe is set in the air inlet slot, the circumference of the Open-cell Aluminum Foam
Side is gas discharge side, is equipped with filtration barrel body and escape pipe, the bottom end of the filtration barrel body and the partition above the partition
It is connected, the top of the filtration barrel body is connected with the end cap；One end of the escape pipe is in filtration barrel body, and the other end prolongs
It extends to outside the end cap；
Cylinder, including third outer housing are detected, bottom is provided with third air inlet and is connected with the escape pipe, described
It is provided with radgas detection device in third outer housing, is provided with third gas outlet and the 4th at the top of the third outer housing
Gas outlet, the 4th gas outlet are connected by second pipe with the third air inlet that first outer housing lower end is arranged,
The third gas outlet and the 4th gas outlet are provided with electric control valve, are provided with controller on the outside of the third outer housing, institute
It states radgas detection device and is connected with controller and be used for transmission monitoring data, the controller and the electric control valve phase
Connect the unlatching or closure for controlling electric control valve.
Preferably, be provided with suction ventilator in the first pipe and the second pipe, the suction ventilator with it is described
Controller is connected.
Preferably, the filtration barrel body includes the first open cell foam metal filter layer set gradually from inside to outside, work
Property charcoal adsorption layer and the second open cell foam metal filter layer.
Preferably, the filter medium is active carbon, ion exchange resin, basic zinc carbonate, iron hydroxide and hydration
The combination of one or more of titanium oxide.
Preferably, the upper surface of the second housing body is provided with annular recess, it is provided in the annular recess close
Connector is sealed, is in contact on the inside of the sealed connecting component and the end cap, the sealed connecting component includes by pin and being fixed on
In the annular recess and fixing seat compatible with the annular recess size, the two sidewalls of the annular recess sustained height
It is corresponding and be uniformly provided with multiple fixation holes, the separate side inner wall with the end cap of the annular recess be equipped with it is each described solid
Determine corresponding first spring mounting hole in hole site.
Preferably, the fixing seat is uniformly provided on the same circumference of the one side wall of first spring mounting hole
Multiple columns, multiple columns are corresponding with the fixation hole respectively, and the fixing seat is far from first spring mounting hole
One side wall end face is equipped with sealing ring mounting groove, is arranged with the first spring, the first spring one end set on each column
On the column, the other end be fixed in first spring mounting hole, sealing ring is equipped in the sealing ring mounting groove,
The side wall of the fixing seat and each column corresponding position is crossed equipped with multiple strip-shaped holes, and each pin sequentially passes through described solid
Determine hole and its corresponding strip-shaped hole the fixing seat is fixed in first annular recess.
Preferably, the radgas detection device includes radioactivity prospecting module and signal processing module, it is described
Radioactivity prospecting module detection surrounding space present in radioactive particle, electric signal is sent to signal processing module, institute
The signal processing module stated converts the electrical signal to digital signal and is sent to controller, the radioactivity prospecting module, including dodges
Bright crystal, the scintillation crystal bond photoelectric tube, the anode of the photoelectric tube connection photomultiplier tube, the light by adhesive layer
On the cathode connection pedestal of electric multiplier tube, divider is equipped with below the pedestal, the side of the divider connects high-voltage electricity
Source, the divider connect emitter follower, and the emitter follower passes through the linear amplifier of circuit connection, the Linear Amplifer
Device connects filter, and the filter connects GM Geiger counter tube, and the GM Geiger counter tube connection signal processing module is described
The side of photomultiplier tube connects low-noise preamplifier.
Preferably, the filter includes first filter, second filter and third filter, first filtering
Device, second filter and third filter are sequentially connected,
The first filter includes first resistor R1, first capacitor C1 and operational amplifier, first resistor R1 right end
Operational amplifier A1 is connected, first capacitor C1 one end is connected between first resistor R1 and operational amplifier A1, another termination
Ground,
The second filter includes second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, second
Capacitor C2, third capacitor C3 and operational amplifier, second resistance R2 right end are sequentially connected in series 3rd resistor R3 and operational amplifier A2,
Second one end capacitor C2 is connected between 3rd resistor R3 and operational amplifier A2, and other end ground connection, third one end capacitor C3 connects
It connects between second resistance R2 and 3rd resistor R3, it is another to terminate at operational amplifier A2 right end, the 4th resistance R4 mono- termination fortune
Amplifier A2 cathode is calculated, the other end is grounded, between mono- end Jie operational amplifier cathode of the 5th resistance R5 and the 4th resistance R4, separately
One end Jie operational amplifier A2 right end,
The third filter includes the 4th capacitor C4 and the 5th capacitor C5, the 4th capacitor C4 and the 5th capacitor C5
It is connected to the normal phase input end of operational amplifier A3, the inverting input terminal of operational amplifier A3 is connect by the 6th resistance R6
The output end of ground, operational amplifier A2 output end and operational amplifier A3 are connected to the input terminal of feedback module F, feedback module F
Output end be connected to the inverting input terminal of operational amplifier A3, the normal phase input end of operational amplifier A3 passes through concatenated second
Resistance R2 and 3rd resistor R3 ground connection, is connected to operation amplifier by the 4th resistance R4 between the 4th capacitor C4 and the 5th capacitor C5
The output end of the output end of device A3, operational amplifier A3 is connected to the 4th capacitor C4 and the 5th capacitor C5 by the 6th capacitor C6
Between；The operational amplifier A3 electric signal exported is segmented by feedback module F according to the time, is carried out to each section of electric signal special
Sign sampling, generates corresponding characteristic set, feedback module F according to the input signal of corresponding period operational amplifier A2 input terminal with
The degree of correlation of characteristic set regulates and controls the output electric current of feedback module F, passes through between the 7th resistance R7 and the 8th resistance R8
7th capacitor C7 is connected to the inverting input terminal of operational amplifier A3, and the 6th capacitor C6 passes through concatenated first triode Q1 and the
One inductance L1 is connected between the 4th capacitor C4 and the 5th capacitor C5；The base stage and current collection of 6th capacitor C6 and the first triode Q1
Pole connection, the emitter of the first triode Q1 are connected to the first inductance L1, and the both ends of the first inductance L1 pass through the 8th capacitor respectively
C8 and the 9th capacitor C9 ground connection.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of for the radioactive spent resin effective filter that treated is vented in one embodiment of the invention
Structural schematic diagram；
Fig. 2 is the structural schematic diagram of filtration barrel body in one embodiment of the invention；
Fig. 3 is the structural schematic diagram of sealed connecting component in one embodiment of the invention；
Fig. 4 is the structural schematic diagram of radgas detection device in one embodiment of the invention；
Fig. 5 is the structural schematic diagram of radioactivity prospecting module in one embodiment of the invention；
Fig. 6 is filter construction schematic diagram in one embodiment of the invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As depicted in figs. 1 and 2,
It is provided by the invention a kind of for the radioactive spent resin effective filter that treated is vented, including
By-pass filtration body 1, including the first outer housing 1-1, the lower end the first outer housing 1-1 are provided with the first air inlet,
The upper end first outer housing 1-1 is provided with the first gas outlet, corresponding first gas outlet inside the first outer housing 1-1
Position be vertically arranged with the first netted netted cylinder 1-3 of cylinder 1-2 and second, the second netted cylinder 1-3 is nested in institute
It states on the outside of the first netted cylinder 1-2, filled with filtering between the first netted cylinder 1-2 and the second netted cylinder 1-3
Medium；
Secondary filtration body 2, including second housing body 2-1, the lower end second housing body 2-1 are provided with the second air inlet,
Second air inlet is connected by first pipe with first air outlet, and the upper end second housing body 2-1 is provided with
End cap 2-2, the end cap 2-2 are threadedly coupled with the second housing body 2-1, are horizontally arranged in the second housing body 2-1
Partition 2-3, the partition 2-3 marginal position are provided with several air hole 2-4, are equipped with cylindrical aperture below the partition 2-3
The bottom side middle position of foamed aluminium 2-5, the Open-cell Aluminum Foam 2-5 are equipped with air inlet slot 2-6, and the first pipe goes out
Gas end is set in the air inlet slot 2-6, and the circumference of the Open-cell Aluminum Foam 2-5 is gas discharge side, the partition 2-3
Top is equipped with filtration barrel body 2-7 and escape pipe 2-8, the bottom end of the filtration barrel body 2-7 are connected with the partition 2-3, the mistake
The top of filter cylinder body 2-7 is connected with the end cap 2-2；One end of the escape pipe 2-8 is in filtration barrel body 2-7, the other end
It extends to outside the end cap 2-2；
Cylinder 3 is detected, including third outer housing 3-1, bottom are provided with third air inlet and the escape pipe 2-8 phase
It connects, radgas detection device 4 is provided in the third outer housing 3-1, is provided at the top of the third outer housing 3-1
Third gas outlet and the 4th gas outlet, the 4th gas outlet are arranged by second pipe and the lower end the first outer housing 1-1
Third air inlet be connected, the third gas outlet and the 4th gas outlet are provided with electric control valve 5, the third outer housing
It is provided with controller 6 on the outside of 3-1, the radgas detection device 4 is connected with controller 6 is used for transmission detection data,
The unlatching or closure that the controller 6 is connected with the electric control valve 5 for controlling electric control valve 5.
The filtration barrel body 2-7 includes the first open cell foam metal filter layer 2-71 set gradually from inside to outside, activity
Charcoal adsorption layer 2-72 and the second open cell foam metal filter layer 2-73.
The working principle of above-mentioned technical proposal are as follows:
The present embodiment work when, radioactive spent resin treated exhaust pass through from the first air inlet, gas pass through first
The filter medium filled between netted cylinder and the second netted cylinder, carries out primary filter, and the present embodiment filter medium is
The combination of one or more of active carbon, ion exchange resin, basic zinc carbonate, iron hydroxide and hydrous titanium oxide, then leads to
Cross the first gas outlet, the gas channels that first pipe and the second air inlet are constituted enter air inlet slot, using Open-cell Aluminum Foam into
Row secondary filter, the present invention use cylindrical aperture foamed aluminium as initial filtrator first, and the present embodiment Open-cell Aluminum Foam has
Three-dimensional ties poroid structure, and the specific surface area of super large, gas is when passing through Porous foam aluminimun, the particulate matters such as small oil particles and foam
Thin and close string diameter collision in aluminium, radioactive grain aperture surface and be filtered out, the gas after secondary filter is from partition side
The air hole of edge setting enters partition upper space, carries out third time filtering, the present embodiment, the cartridge filter by filtration barrel body
Body includes the first open cell foam metal filter layer, activated carbon adsorption layer and the second open cell foam metal set gradually from inside to outside
Filter layer.Enter in detection cylinder by filtered gas, radgas detection device puts filtered gas
The detection of penetrating property, and will test data and be transferred to controller processing, when detected value is lower than threshold values, at controller third gas outlet
Electric control valve unlatching is discharged, and when detected value is higher than threshold values, the electric control valve at the 4th gas outlet of controller is opened, and is passed through
Second pipe is passed through in the first outer housing and filters again.
Compared with prior art, the present invention uses filters radioactivity exhaust three times, effectively raises filtering effect
Fruit, while by different filter structures, air-flow velocity can be reduced, the influence for avoiding flow velocity too fast to filter effect, while this
Invention is provided with radgas detection device, can carry out radiological measuring to filtered gas, and determine according to detection structure
Determine direct emission still to filter again.
As shown in Figure 1, in one embodiment,
In order to improve gas flow efficiency, suction ventilator 7, institute are provided in the first pipe and the second pipe
Suction ventilator 7 is stated to be connected with the controller 6.
As shown in figure 3, in one embodiment,
The upper surface of the second housing body 2-1 is provided with annular recess 2-9, is provided in the annular recess 2-9 close
Connector 8 is sealed, is in contact on the inside of the sealed connecting component 8 and the end cap 2-2, the sealed connecting component 8 includes passing through pin 8-5
Be fixed in the annular recess 2-9 and fixing seat 8-1 compatible with the annular recess 2-9 size, the ring-type are recessed
The two sidewalls of slot 2-9 sustained height are corresponding and are uniformly provided with multiple fixation hole 2-91, and the annular recess 2-9 is separate with the end
The side inner wall for covering 2-2 is equipped with first spring mounting hole 2-92 corresponding with each position the fixation hole 2-91.
The fixing seat 8-1 is uniformly provided with more on the same circumference of the one side wall of the first spring mounting hole 2-92
A column 8-2, multiple column 8-2 are corresponding with the fixation hole 2-91 respectively, and the fixing seat 8-1 is far from first bullet
The one side wall end face of spring mounting hole 2-92 is equipped with sealing ring mounting groove, and the first spring 8- is arranged with outside each column 8-2
3, described one end first spring 8-3 is sheathed on the column 8-2, the other end is fixed on the first spring mounting hole 2-92
It is interior, sealing ring 8-4, the side wall of the fixing seat 8-1 and each column 8-2 corresponding position are equipped in the sealing ring mounting groove
It crosses and is equipped with multiple strip-shaped hole 8-21, each pin 8-5 sequentially passes through the fixation hole 2-91 and its corresponding strip-shaped hole 8-21
The fixing seat 8-1 is fixed in the first annular recess 2-9.
The working principle of above-mentioned technical proposal are as follows:
When in use, the pin is fixed in the fixation hole on annular recess, and the strip-shaped hole in the fixing seat makes to fix
Seat can slide up and down on fixed pin；When the sealing ring and junction contacts face contact in the fixing seat, squeeze
Sealing ring, the effect for the strip-shaped hole being arranged in fixing seat allow seal receptacle to move and squeeze on the direction far from connector
First spring, the first spring plays the role of buffering when end cap is docked with second housing body, while squeezing the first spring, and first
The reaction force of spring comes into full contact with sealing ring with connector end face, improves the leakproofness between sealing bolster and connector,
To have the function that sealing against leakage.
As shown in Figure 4 and Figure 5, in one embodiment,
The radgas detection device 4 includes radioactivity prospecting module 4-1 and signal processing module 4-2, described
Radioactivity prospecting module 4-1 detects radioactive particle present in surrounding space, and electric signal is sent to signal processing module 4-
2, the signal processing module 4-2 convert the electrical signal to digital signal and are sent to controller 6, the radioactivity prospecting module
4-1, including scintillation crystal 4-10, the scintillation crystal 4-10 bond photoelectric tube 4-12, the photoelectric tube by adhesive layer 4-11
The cathode of the anode of 4-12 connection photomultiplier tube 4-13, the photomultiplier tube 4-13 connects on pedestal 4-14, the pedestal
Divider 4-15 is equipped with below 4-14, the side of the divider 4-15 connects high voltage power supply 4-16, the divider 4-15
Emitter follower 4-17 is connected, the emitter follower 4-17 passes through the linear amplifier 4-19 of circuit connection, the Linear Amplifer
Device 4-19 connection filter 4-20, the filter 4-20 connection GM Geiger counter tube 4-18, the GM Geiger counter tube 4-18
The side of connection signal processing module 4-2, the photomultiplier tube 4-13 connect low-noise preamplifier 4-21.
The working principle of above-mentioned technical proposal are as follows:
When radioactive particle enters scintillation crystal, the atom or molecule of scintillation crystal are excited and generate fluorescence.Utilize light
Lead makes fluorescence as often as possible be mapped to electrooptical device (photoconductive tube and photomultiplier tube) with the collecting part of the light such as reflector
On reflecting layer and photoelectron is got, after these photoelectrons can be directly or through multiplication, is collected by output stage and forms electric pulse letter
Number, signal passes to signal processing module and is converted into digital signal, passes to controller, and the present embodiment signal processing module is number
Analog conversion circuit, controller compare obtained information with preset threshold, and determine direct emission still according to comparison result
Again it filters.
As shown in fig. 6, in one embodiment,
The filter includes first filter, second filter and third filter, the first filter, the second filter
Wave device and third filter are sequentially connected,
The first filter includes first resistor R1, first capacitor C1 and operational amplifier, first resistor R1 right end
Operational amplifier A1 is connected, first capacitor C1 one end is connected between first resistor R1 and operational amplifier A1, another termination
Ground,
The second filter includes second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, second
Capacitor C2, third capacitor C3 and operational amplifier, second resistance R2 right end are sequentially connected in series 3rd resistor R3 and operational amplifier A2,
Second one end capacitor C2 is connected between 3rd resistor R3 and operational amplifier A2, and other end ground connection, third one end capacitor C3 connects
It connects between second resistance R2 and 3rd resistor R3, it is another to terminate at operational amplifier A2 right end, the 4th resistance R4 mono- termination fortune
Amplifier A2 cathode is calculated, the other end is grounded, between mono- end Jie operational amplifier cathode of the 5th resistance R5 and the 4th resistance R4, separately
One end Jie operational amplifier A2 right end,
The third filter includes the 4th capacitor C4 and the 5th capacitor C5, the 4th capacitor C4 and the 5th capacitor C5
It is connected to the normal phase input end of operational amplifier A3, the inverting input terminal of operational amplifier A3 is connect by the 6th resistance R6
The output end of ground, operational amplifier A2 output end and operational amplifier A3 are connected to the input terminal of feedback module F, feedback module F
Output end be connected to the inverting input terminal of operational amplifier A3, the normal phase input end of operational amplifier A3 passes through concatenated second
Resistance R2 and 3rd resistor R3 ground connection, is connected to operation amplifier by the 4th resistance R4 between the 4th capacitor C4 and the 5th capacitor C5
The output end of the output end of device A3, operational amplifier A3 is connected to the 4th capacitor C4 and the 5th capacitor C5 by the 6th capacitor C6
Between；The operational amplifier A3 electric signal exported is segmented by feedback module F according to the time, is carried out to each section of electric signal special
Sign sampling, generates corresponding characteristic set, feedback module F according to the input signal of corresponding period operational amplifier A2 input terminal with
The degree of correlation of characteristic set regulates and controls the output electric current of feedback module F, passes through between the 7th resistance R7 and the 8th resistance R8
7th capacitor C7 is connected to the inverting input terminal of operational amplifier A3, and the 6th capacitor C6 passes through concatenated first triode Q1 and the
One inductance L1 is connected between the 4th capacitor C4 and the 5th capacitor C5；The base stage and current collection of 6th capacitor C6 and the first triode Q1
Pole connection, the emitter of the first triode Q1 are connected to the first inductance L1, and the both ends of the first inductance L1 pass through the 8th capacitor respectively
C8 and the 9th capacitor C9 ground connection.
The present embodiment has the beneficial effect that
The each filter of the present embodiment can be relatively independently regulated, and reduces signal and produces in transmission process because of non-linear
Raw low intermodulation, improves the index of filter, and tuning range is larger, and tuning sensitivity increases, and the time of tuning greatly shortens, mentions
High production efficiency, while the present embodiment is reduced by improving the normal phase input end feedback arrangement of third filter for having
The loss for imitating signal, improves the signal-to-noise ratio of output signal.And further utilize the on-off control characteristic of triode, realization pair
In the adaptive adjustment of normal phase input end feed circuit, filter is improved for the adaptability of varying input signal.Utilize
Seven capacitors establish the connection of normal phase input end and inverting input terminal, can use adjustment of the feedback module for output electric current, right
Filter normal phase input end carries out feedforward adjustment.Feedback module is by the detection and processing to filter output signal, to reverse phase
The feedback current of input terminal is adjusted, and can adjust the working condition of filter in time when output signal occurs abnormal.Instead
Presenting module is that judgement is compared by way of establishing characteristic set for the processing of signal, greatly reduces operand, mentions
The reaction speed that high feedback module changes output signal.
The unspecified content of the present invention, can be used the prior art, therefore do not repeating.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. for the radioactive spent resin effective filter that treated is vented, which is characterized in that including
By-pass filtration body (1), including the first outer housing (1-1), the first outer housing (1-1) lower end are provided with the first air inlet
Mouthful, the first outer housing (1-1) upper end is provided with the first gas outlet, corresponding described the inside first outer housing (1-1)
The position of one gas outlet is vertically arranged with the first netted cylinder (1-2) and the second netted cylinder (1-3), the second netted cylinder
(1-3) is nested on the outside of the described first netted cylinder (1-2), the first netted cylinder (1-2) and the described second netted cylinder
Filter medium is filled between (1-3)；
Secondary filtration body (2), including second housing body (2-1), second housing body (2-1) lower end are provided with the second air inlet
Mouthful, second air inlet is connected by first pipe with first air outlet, and second housing body (2-1) upper end is set
It is equipped with end cap (2-2), the end cap (2-2) is threadedly coupled with the second housing body (2-1), the second housing body (2-1)
It is inside horizontally arranged with partition (2-3), partition (2-3) marginal position is provided with several air holes (2-4), the partition (2-
3) lower section is equipped with cylindrical aperture foamed aluminium (2-5), and the bottom side middle position of the Open-cell Aluminum Foam (2-5) is equipped with air inlet duct
Hole (2-6), the outlet side of the first pipe are set in the air inlet slot (2-6), the circle of the Open-cell Aluminum Foam (2-5)
Side is gas discharge side, is equipped with filtration barrel body (2-7) and escape pipe (2-8), the filtration barrel body above the partition (2-3)
The bottom end of (2-7) is connected with the partition (2-3), and the top of the filtration barrel body (2-7) is connected with the end cap (2-2)；Institute
The one end for stating escape pipe (2-8) is in filtration barrel body (2-7), and the other end extends to the end cap (2-2) outside；
It detects cylinder (3), including third outer housing (3-1), bottom are provided with third air inlet and the escape pipe (2-8) phase
Connection, the third outer housing (3-1) is interior to be provided with radgas detection device (4), at the top of the third outer housing (3-1)
It is provided with third gas outlet and the 4th gas outlet, the 4th gas outlet passes through second pipe and first outer housing (1-1)
The third air inlet of lower end setting is connected, and the third gas outlet and the 4th gas outlet are provided with electric control valve (5), described
It is provided with controller (6) on the outside of third outer housing (3-1), the radgas detection device (4) is connected with controller (6)
Monitoring data are used for transmission, the controller (6) is connected with the electric control valve (5) for controlling opening for electric control valve (5)
It opens or is closed.
2. according to claim 1 for the radioactive spent resin effective filter that treated is vented, feature exists
In being provided in the first pipe and the second pipe suction ventilator (7), the suction ventilator (7) and the controller (6)
It is connected.
3. according to claim 1 for the radioactive spent resin effective filter that treated is vented, feature exists
In the filtration barrel body (2-7) includes the first open cell foam metal filter layer (2-71), the active carbon set gradually from inside to outside
Adsorption layer (2-72) and the second open cell foam metal filter layer (2-73).
4. according to claim 1 for the radioactive spent resin effective filter that treated is vented, feature exists
In the filter medium is one of active carbon, ion exchange resin, basic zinc carbonate, iron hydroxide and hydrous titanium oxide
Or several combinations.
5. according to claim 1 for the radioactive spent resin effective filter that treated is vented, feature exists
In the upper surface of the second housing body (2-1) is provided with annular recess (2-9), is provided in the annular recess (2-9) close
It seals connector (8), is in contact on the inside of the sealed connecting component (8) and the end cap (2-2), the sealed connecting component (8) includes
By pin (8-5) and it is fixed in the annular recess (2-9) and fixing seat compatible with the annular recess (2-9) size
The two sidewalls of (8-1), annular recess (2-9) sustained height are corresponding and are uniformly provided with multiple fixation holes (2-91), the ring
Shape groove (2-9) is separate and the side inner wall of the end cap (2-2) be equipped with it is corresponding with each fixation hole position (2-91)
First spring mounting hole (2-92).
6. according to claim 5 for the radioactive spent resin effective filter that treated is vented, feature exists
In the fixing seat (8-1) is uniformly provided with more on the same circumference of the one side wall of first spring mounting hole (2-92)
A column (8-2), multiple columns (8-2) are corresponding with the fixation hole (2-91) respectively, and the fixing seat (8-1) is far from institute
The one side wall end face for stating the first spring mounting hole (2-92) is equipped with sealing ring mounting groove, and each column (8-2) is arranged outside
Have the first spring (8-3), described first spring (8-3) one end is sheathed on the column (8-2), the other end is fixed on described
In one spring mounting hole (2-92), it is equipped with sealing ring (8-4) in the sealing ring mounting groove, the fixing seat (8-1) and each institute
The side wall for stating column (8-2) corresponding position is crossed equipped with multiple strip-shaped holes (8-21), and each pin (8-5) sequentially passes through described solid
Determine hole (2-91) and its corresponding strip-shaped hole (8-21) and the fixing seat (8-1) is fixed on first annular recess (2-9)
It is interior.
7. according to claim 1 for the radioactive spent resin effective filter that treated is vented, feature exists
In, the radgas detection device (4) include radioactivity prospecting module (4-1) and signal processing module (4-2), it is described
Radioactivity prospecting module (4-1) detects radioactive particle present in surrounding space, and electric signal is sent to signal processing module
(4-2), the signal processing module (4-2) convert the electrical signal to digital signal and are sent to controller (6), the radioactivity
Detecting module (4-1), including scintillation crystal (4-10), the scintillation crystal (4-10) bond photoelectric tube by adhesive layer (4-11)
(4-12), the anode of photoelectric tube (4-12) connection photomultiplier tube (4-13), the cathode of the photomultiplier tube (4-13)
It connects on pedestal (4-14), is equipped with divider (4-15) below the pedestal (4-14), the side of the divider (4-15)
It connects high voltage power supply (4-16), the divider (4-15) connects emitter follower (4-17), the emitter follower (4-17)
By the linear amplifier of circuit connection (4-19), the linear amplifier (4-19) connects filter (4-20), the filter
(4-20) connects GM Geiger counter tube (4-18), and GM Geiger counter tube (4-18) the connection signal processing module (4-2) is described
The side of photomultiplier tube (4-13) connects low-noise preamplifier (4-21).
8. according to claim 7 for the radioactive spent resin effective filter that treated is vented, feature exists
In the filter includes first filter, second filter and third filter, the first filter, second filter
It is sequentially connected with third filter,
The first filter includes first resistor R1, first capacitor C1 and operational amplifier, first resistor R1 right end connection fortune
Amplifier A1 is calculated, first capacitor C1 one end is connected between first resistor R1 and operational amplifier A1, other end ground connection,
The second filter includes second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the second capacitor
C2, third capacitor C3 and operational amplifier, second resistance R2 right end are sequentially connected in series 3rd resistor R3 and operational amplifier A2, and second
The one end capacitor C2 is connected between 3rd resistor R3 and operational amplifier A2, and other end ground connection, the one end third capacitor C3 is connected to
Another to terminate at operational amplifier A2 right end between second resistance R2 and 3rd resistor R3, the 4th resistance R4 mono- termination operation is put
Big device A2 cathode, other end ground connection, between mono- end Jie operational amplifier cathode of the 5th resistance R5 and the 4th resistance R4, the other end
It connects in operational amplifier A2 right end,
The third filter includes the 4th capacitor C4 and the 5th capacitor C5, the 4th capacitor C4 and the 5th capacitor C5 series connection
It is connected to the normal phase input end of operational amplifier A3, the inverting input terminal of operational amplifier A3 is grounded by the 6th resistance R6, fortune
The output end of calculation amplifier A2 output end and operational amplifier A3 are connected to the input terminal of feedback module F, the output of feedback module F
End is connected to the inverting input terminal of operational amplifier A3, and the normal phase input end of operational amplifier A3 passes through concatenated second resistance R2
It is grounded with 3rd resistor R3, is connected to operational amplifier A3's by the 4th resistance R4 between the 4th capacitor C4 and the 5th capacitor C5
The output end of output end, operational amplifier A3 is connected between the 4th capacitor C4 and the 5th capacitor C5 by the 6th capacitor C6；Instead
The operational amplifier A3 electric signal exported is segmented by feedback module F according to the time, carries out feature sampling to each section of electric signal,
Corresponding characteristic set is generated, feedback module F is according to the input signal and feature set for corresponding to period operational amplifier A2 input terminal
The degree of correlation of conjunction regulates and controls the output electric current of feedback module F, passes through the 7th electricity between the 7th resistance R7 and the 8th resistance R8
Hold the inverting input terminal that C7 is connected to operational amplifier A3, the 6th capacitor C6 passes through concatenated first triode Q1 and the first inductance
L1 is connected between the 4th capacitor C4 and the 5th capacitor C5；The base stage and collector of 6th capacitor C6 and the first triode Q1 connects
Connect, the emitter of the first triode Q1 is connected to the first inductance L1, the both ends of the first inductance L1 pass through respectively the 8th capacitor C8 and
9th capacitor C9 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616927.0A CN110314456A (en) | 2019-07-09 | 2019-07-09 | For the radioactive spent resin effective filter that treated is vented |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616927.0A CN110314456A (en) | 2019-07-09 | 2019-07-09 | For the radioactive spent resin effective filter that treated is vented |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110314456A true CN110314456A (en) | 2019-10-11 |
Family
ID=68121774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910616927.0A Withdrawn CN110314456A (en) | 2019-07-09 | 2019-07-09 | For the radioactive spent resin effective filter that treated is vented |
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| Country | Link |
|---|---|
| CN (1) | CN110314456A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112289474A (en) * | 2020-10-29 | 2021-01-29 | 江苏中海华核环保有限公司 | Radioactive waste resin shielding and transporting device and method |
| CN112466504A (en) * | 2021-02-02 | 2021-03-09 | 杭州景业智能科技股份有限公司 | Automatic resin loading and unloading system and method used in radioactive environment |
| CN115055392A (en) * | 2022-04-14 | 2022-09-16 | 华能山东石岛湾核电有限公司 | High-temperature gas cooled reactor graphite nodule surface decontamination screening system and method |
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| CN115055392A (en) * | 2022-04-14 | 2022-09-16 | 华能山东石岛湾核电有限公司 | High-temperature gas cooled reactor graphite nodule surface decontamination screening system and method |
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Application publication date: 20191011 |