CN201281965Y - Drive mechanism for neutron source check - Google Patents
Drive mechanism for neutron source check Download PDFInfo
- Publication number
- CN201281965Y CN201281965Y CNU2008201328070U CN200820132807U CN201281965Y CN 201281965 Y CN201281965 Y CN 201281965Y CN U2008201328070 U CNU2008201328070 U CN U2008201328070U CN 200820132807 U CN200820132807 U CN 200820132807U CN 201281965 Y CN201281965 Y CN 201281965Y
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- China
- Prior art keywords
- neutron source
- motor
- check
- driving mechanism
- limit switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000033001 locomotion Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- 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
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a driving mechanism for checking neutron sources, which comprises a power transmission mechanism and a checking neutron source, wherein, the power transmission mechanism comprises a motor, a large pulley, a limit switch, a baffle plate and the like; the motor is controlled by changing the power polarity of the motor, i.e. the rotation direction of the motor and matching with a diode and the limit switch; the limit switch comprises a positive electrode, a negative electrode and an insulation sheet; the positive electrode and the negative electrode are fixed on the insulation sheet and elastically contacted; a hoist cable penetrates the positive electrode and the negative electrode, and the stop block is fixed at the lower part thereof; the baffle plate is driven by the vertical motion of the hoist cable, and the vertical motion of the hoist cable enables an elastic contact of the negative electrode to be out of contact with the positive electrode, the motor is stopped to rotate, and the neutron producer is in place. In the technical scheme provided by the utility model, the lifting of the neutron source depends on changing of the power polarity of the motor and matching with the diode or the limit switch, and the total control can be realized by adopting only one concentric cable, thereby ensuring the circuit to be simple, meanwhile, the putting position of the neutron source is accurate.
Description
Technical field
The utility model belongs to the nuclear detection technology field, is specifically related to a kind of check neutron source driving mechanism.
Background technology
Because high dose, being placed on Nuclear Detection System in the reactor can not arbitrarily take out and test, therefore, check neutron source is hung in the interior detection system of heap, detector and instrument mode thereof are carried out just becoming a simple and practical way at X-ray inspection X.For example, in the sniffer of the used fuel element rupture detection of sodium-cooled fast reactor, be provided with check neutron source conduit, will check neutron source to hang in from the neutron source conduit in case of necessity, whether the check sniffer is working properly.Usually used check neutron source driving mechanism is fairly simple, and for example, the lifting rope that utilizes driven by motor to hang check neutron source moves up and down and finishes, and its problem is that the location is inaccurate.
Summary of the invention
(1) goal of the invention
The utility model is primarily aimed in the prior art, and check neutron source drive unit is located inaccurate problem, provides a kind of accurate positioning, control circuit simply to check the neutron source drive unit.
(2) technical scheme
For achieving the above object, the utility model provides following technical scheme.
A kind of check neutron source drive unit comprises power drive mechanism, check neutron source, and power drive mechanism moves up and down by the check neutron source that drives rope one end that moves up and down that drives lifting rope.Key is, the employed power drive mechanism of the utility model comprises several parts such as motor, large pulley, limit switch and block, wherein the control of motor is by changing the power supply polarity of motor, promptly change the rotation direction of motor, cooperating diode and limit switch to realize; Described limit switch is made up of positive electrode, negative electrode and insulating trip, positive electrode, negative electrode are fixed on the insulating trip, the two Elastic Contact, lifting rope passes between positive electrode, negative electrode, its underpart fixed stop, moving up and down of lifting rope drives block and the resilient contact of negative electrode and positive electrode disengaged, the motor stall, and neutron source puts in place.
(3) implementation result
In the technical scheme provided by the utility model, the lifting of neutron source is by changing the power supply polarity of motor, and joins and diode and limit switch, only can realize whole controls with a single core cable, make circuit very simple, simultaneously, the position that neutron source is parked is accurate.
Description of drawings
Fig. 1 checks neutron source driving mechanism structure synoptic diagram;
The canoe of Fig. 2 lifting rope;
Fig. 3 limit switch structural representation;
Fig. 4 circuit for controlling motor figure.
Wherein, 1, motor; 2, large pulley; 3, motor output shaft; 4, small sheave; 5, packing washer; 6, shield plug; 7, circuit board; 8a, limit switch; 8b, limit switch; 9a, block; 9b, block; 10, lifting rope; 11, shielding slow body; 12, check neutron source; 13, neutron source well-bucket; 14, gravitational equilibrium hammer; 15, insulating trip; 16, positive electrode; 17, negative electrode; 18, relay; 19, commutation diode and protective resistance.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is further elaborated.
As shown in Figure 1, a kind of check neutron source driving mechanism is installed in by packing washer 5 in the upper shielding layer of reactor, when doing checked operation, to check neutron source to hang in the sniffer of reactor pit downwards by driving mechanism, whether normal in order to check detector and instrumentation.This operates in the pulpit and carries out remote control by computing machine.Its concrete structure is, check neutron source 12 is contained in the fusiformis well-bucket 13, fusiformis well-bucket 13 ties up on the lifting rope 10, the upper and lower neutron shield slow body 11 that also is equipped with of check neutron source in well-bucket 13, its effect is in neutron source is parked in heap top screen layer the time, prevents that interference to detector from reaching the injury to the reactor hall staff.Lifting rope 10 is walked around large and small pulley 2,4, and its other end system has and heavy gravitational equilibrium hammer 14 such as neutron source well-bucket 13, and purpose is to reduce the load of motor 1.
In its driving mechanism, motor 1 drives large pulley 2 motions by motor output shaft 3.For having increased the friction force between pulley and the lifting rope 10, prevented the lap wound of lifting rope 10 simultaneously, present embodiment adopts the scheme of sister block, a small sheave 4 promptly is installed below large pulley 2, lifting rope 10 canoes as shown in Figure 2, promptly lifting rope 10 is walked around large pulley 2 after walking around from the bottom of small sheave 4 again.
As shown in Figure 1, be fixed with two groups of block 9a, 9b at two afterbodys of lifting rope 10, corresponding with it is the circuit board 7 that the control motor movement is set in the bottom of driving mechanism, and the limit switch 8a, the 8b that match with block 9a, 9b.
As shown in Figure 3, limit switch 8a, 8b are together formed on circuit board with the tubular rivet riveting by positive electrode 16, negative electrode 17 and insulating trip 15, at ordinary times, are Elastic Contact between positive electrode 16, the negative electrode 17.Lifting rope 10 passes from the center pit of tubular rivet, drives block 9a or 9b and upward moves, and block disengages the resilient contact of negative electrode 17 and positive electrode 16, motor 1 stall, and check neutron source 12 puts in place.
The indication of the rotation of motor 1 and check neutron source 12 positions is realized by circuit as shown in Figure 4.This circuit comprises positive-negative power, relay 18, diode D1, D2, D3, D4, red, yellow, green light emitting diode, compositions such as limit switch 8a, 8b.By the computer control of pulpit, make relay 18 inhale and or opening variation power supply polarity, thereby change the rotation direction of motor, reach the purpose that makes neutron source rise and descend.Utilize the unilateral conduction of diode, the control of neutron source rising and decline is separately independently carried out.For example, when relay 18 is connected positive supply, check neutron source 12 is risen, diode D3 conducting, check neutron source 12 rises when putting in place, by right block 9a limit switch 8a is disconnected, and rising stops.When relay 18 was connected negative supply, check neutron source 12 descended, diode D4 conducting, and left block 9b disconnects limit switch 8b, and descending motion stops.Simultaneously, when inserting positive supply, the D1 conducting, green LED is lighted, and expression check neutron source is parked in the screen layer of heap top.Red light emitting diodes is lighted in the D2 conducting when connecting negative supply, and expression check neutron source has hung in the sniffer of reactor pit, is in source inspection state.When being lighted simultaneously, yellow bulb represent to check neutron source in the motion of this position.Be the protection light emitting diode, two light emitting diodes are all gone here and there commutation diode consistent with its direction and protective resistance 19.
In the present embodiment, the lifting of check neutron source 12 is by the power supply polarity of change motor 1, thereby the rotation direction of change motor 1 realizes, join and diode and limit switch, only can realize whole controls, make circuit very simple, and the position of parking be accurate with a single core cable.
In addition, for preventing the intense gamma radiation of reactor pit, the staff in hall is piled in shock reaction, and the stainless steel screen that has increased long 100～150mm blocks 6.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (9)
1. check the neutron source driving mechanism for one kind, comprise power drive mechanism, check neutron source (12), power drive mechanism moves up and down by the check neutron source (12) that drives rope one end that moves up and down that drives lifting rope (10), it is characterized in that: described power drive mechanism comprises motor (1), large pulley (2), limit switch (8a, 8b) and block several parts such as (9a, 9b), wherein the control of motor (1) is by changing the power supply polarity of motor (1), promptly change the rotation direction of motor, cooperate diode and limit switch (8a, 8b) to realize; Described limit switch (8a, 8b) is made up of positive electrode (16), negative electrode (17) and insulating trip (15), positive electrode (16), negative electrode (17) are fixed on the insulating trip (15), the two Elastic Contact, lifting rope (10) passes between (17) from positive electrode (16), negative electrode, its underpart fixed stop (9a, 9b), moving up and down of lifting rope (10) drives block (9a, 9b) and the resilient contact of negative electrode (17) and positive electrode (16) disengaged, motor (1) stall, neutron source (12) puts in place.
2. check neutron source driving mechanism according to claim 1 is characterized in that: described check neutron source (12) is contained in the fusiformis well-bucket (13), and fusiformis well-bucket (13) ties up on the lifting rope (10).
3. check neutron source driving mechanism according to claim 2 is characterized in that: the upper and lower neutron shield slow body (11) that also is equipped with of check neutron source in the described well-bucket (13).
4. check neutron source driving mechanism according to claim 1 is characterized in that: the other end of described lifting rope (10) system has with neutron source well-bucket (13) and waits heavy gravitational equilibrium to hammer (14) into shape.
5. according to claim 1,2 or 4 described check neutron source driving mechanisms, it is characterized in that: a small sheave (4) is installed in the below at large pulley (2), and lifting rope (10) is walked around large pulley (2) after walking around from the bottom of small sheave (4) again.
6. check neutron source driving mechanism according to claim 1 is characterized in that: the circuit board (7) that the control motor movement is set in the bottom of driving mechanism.
7. check neutron source driving mechanism according to claim 6, it is characterized in that: described circuit board (7) comprises positive-negative power, relay (18), diode (D1, D2, D3, D4), red, yellow, green light emitting diode, limit switch compositions such as (8a, 8b).
8. check neutron source driving mechanism according to claim 7 is characterized in that: control circuit two light emitting diodes of described circuit board (7) are all gone here and there commutation diode consistent with its direction and protective resistance (19).
9. check neutron source driving mechanism according to claim 1 is characterized in that: the stainless steel screen that length is set is 100～150mm in the bottom of power drive mechanism block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201328070U CN201281965Y (en) | 2008-08-06 | 2008-08-06 | Drive mechanism for neutron source check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201328070U CN201281965Y (en) | 2008-08-06 | 2008-08-06 | Drive mechanism for neutron source check |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281965Y true CN201281965Y (en) | 2009-07-29 |
Family
ID=40928833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201328070U Expired - Lifetime CN201281965Y (en) | 2008-08-06 | 2008-08-06 | Drive mechanism for neutron source check |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281965Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335062B (en) * | 2008-08-06 | 2011-08-24 | 中国原子能科学研究院 | Driving mechanism for neutron source inspection |
| CN105645318A (en) * | 2015-12-29 | 2016-06-08 | 中国原子能科学研究院 | Straight pulling type loading and unloading elevator for fast reactor |
-
2008
- 2008-08-06 CN CNU2008201328070U patent/CN201281965Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335062B (en) * | 2008-08-06 | 2011-08-24 | 中国原子能科学研究院 | Driving mechanism for neutron source inspection |
| CN105645318A (en) * | 2015-12-29 | 2016-06-08 | 中国原子能科学研究院 | Straight pulling type loading and unloading elevator for fast reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090729 Effective date of abandoning: 20080806 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090729 Effective date of abandoning: 20080806 |