CN2508240Y - Neutron activating analysis sample pneumatic conveyer buffer unit - Google Patents

Neutron activating analysis sample pneumatic conveyer buffer unit Download PDF

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Publication number
CN2508240Y
CN2508240Y CN01275092U CN01275092U CN2508240Y CN 2508240 Y CN2508240 Y CN 2508240Y CN 01275092 U CN01275092 U CN 01275092U CN 01275092 U CN01275092 U CN 01275092U CN 2508240 Y CN2508240 Y CN 2508240Y
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CN
China
Prior art keywords
sample
chamber
delivery
conveying tube
gas piping
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Expired - Lifetime
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CN01275092U
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Chinese (zh)
Inventor
徐林祥
杨其辉
吕渝川
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Nuclear Power Institute of China
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Nuclear Power Institute of China
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N2033/0093—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 radioactive materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • G01N2035/0474—Details of actuating means for conveyors or pipettes
    • G01N2035/0479—Details of actuating means for conveyors or pipettes hydraulic or pneumatic
    • G01N2035/0481—Pneumatic tube conveyors; Tube mails; "Rohrpost"

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  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

A neutron activated analytical sample pneumatic delivery cushioning device belongs to a device of an air flow delivery container, and comprises a sample delivery pipe, an outer sleeve pipe arranged outside the device, and two air delivery pipes. Valve are arranged at the upper parts of the sample delivery pipe and the air delivery pipe, a sample box flies under the drive of delivery air flow, a reverse air flow cushioning is adopted at the adjacent terminal, to enable the sample box to suspend in the place, the cushioning purpose is reached, the backing-fly of the sample can not occur, and the cushioning structure is simple, and the operation is reliable. The device is mainly used to deliver the cushioning of the neutron activated sample at the radiation receiving end, to prevent the sample from being damaged.

Description

Neutron activation analysis sample strength is carried snubber assembly
Technical field
The utility model belongs to conveying device, is specifically related to the snubber assembly that strength is carried sample.
Background technology
Neutron activation analysis sample air-transport system also claims to run the rabbit system usually, and its effect is fast, fixed point to carry the sample that need carry out neutron activation analysis.Adopt malleation or negative pressure pneumatic conveying mode to finish the transmission of sample between positions such as irradiation, detection in sample.Transporting velocity is high more, and sample finishes to the time used between the detection analysis position short more from irradiation, can satisfy the activation analysis requirement of more kinds of nucleic more.But the sample box that sample is housed of high-speed flight is when arriving receiving terminal, and the solution of its buffer problem is very important.When especially sample box went into to pile irradiation, the accident that sample box is broken can if well do not cushion, easily take place up to 15-20m/s in the sample box end speed.The following two kinds of sample buffering methods of general in the past employing:
(1) is the sample box receiving terminal in the irradiation tube bottom, the solid vibroshock is set, as buffer spring, its shortcoming is the structural complexity that has increased irradiation tube, and sample is repeatedly beated in terminal and caused the uncertainty of timing, and there is problem of aging in spring, time one is long, will influence buffering effect.
(2) gas buffer promptly during near terminal, with the delivery air commutation, imposes back draught to sample box at sample box, sees Fig. 4 and shown in Figure 5, and sample is gone into to pile the delivery air direction and seen Fig. 4, and sample is gone into to pile the buffer gas flow direction and seen Fig. 5.Its advantage is that buffering effect is better than spring buffer, and its shortcoming is that the initial moment of the air feed of back draught and service life length are difficult to control, air feed evening do not have a buffer action, air feed early or service life grown, sample box is oppositely flown.
Summary of the invention
The purpose of this utility model cushions simple and reliable neutron activation analysis sample strength when being a kind of sample incoming terminal of design and carries snubber assembly.
The utility model is achieved in that a kind of neutron activation analysis sample strength conveying snubber assembly, it comprises sample conveying tube and is located at the outer outer tube of sample conveying tube, the sample conveying tube upper end has valve, the lower end is provided with lower end, the outer tube lower end is provided with down end plug, form airspace between lower end and the following end plug, the sample conveying tube lower end communicates with a gas piping with gap between the outer tube through this gap and sample conveying tube, this gas piping upper end is provided with valve, also comprise simultaneously by last, the plenum chamber that lower cover is formed, being provided with dividing plate in the plenum chamber is separated into its inner chamber, lower chamber, sample conveying tube from bottom to top run through and are installed on the plenum chamber, and sample conveying tube and Shang Gai Even are connect, outer sleeve upper is connected with lower cover, and communicate with following chamber, gas piping is installed in and covers, and it communicates with following chamber, on cover another root gas piping also be installed, its upper end also is provided with valve, and the sample conveying tube sidewall has air hole, communicates with another root gas piping through last chamber.
The utility model carries snubber assembly to Duo a gas piping than existing strength, have two gas pipings, utilize wherein gas piping conveying buffer gas flow when sample arrives terminal soon, airflow direction is opposite with the sample box heading, can play good buffer action to sample.Oppositely the existence of buffer gas flow can't make sample oppositely fly, and back draught can wait until that also sample just begins to provide when arriving photoelectric detector, also can promptly provide buffer gas flow in sample delivery.Two kinds of methods of operation, the sample box buffering effect is all fine.
Description of drawings
Fig. 1 is the utility model structural representation, delivery air direction when sample box shown in the figure goes into to pile;
Fig. 2 is the utility model structural representation, buffer gas flow direction when sample box shown in the figure arrives receiving position;
Fig. 3 carries synoptic diagram for the sample strength;
In Fig. 1～3,1,2 is gas piping, and 3 is sample conveying tube, 4 is sample box, and 5 is loam cake, and 6 is dividing plate, 7 is lower cover, and 8 is outer tube, and 9 is lower end, 10 are following end plug, and 11 is that the sample strength is carried snubber assembly, and 12 is photoelectric detector, 13 is injector, 14 is photoelectric detector, and 15 is receiver, and 16,17,18,19 are respectively vacuum solenoid B 2, B 1, A 2And A 1, 20 is exhaust-air filter, and 21 is vacuum pump, and 22 is the air intake filtrator.
Fig. 4 carries snubber assembly synoptic diagram, delivery air direction when sample shown in the figure goes into to pile for existing sample strength;
Fig. 5 is that existing sample strength is carried snubber assembly reverse buffer gas flow direction when sample box arrives receiving end.
31 is outer tube among Fig. 4 and Fig. 5, and 32 is sample conveying tube, and 33 is cover plate, and 34 is gas piping, and 35 is the solid vibroshock, and 36 is lower end, and 37 are following end plug.
Embodiment
As depicted in figs. 1 and 2, a kind of neutron activation analysis sample strength is carried snubber assembly, it comprises sample conveying tube 3 and the outer tube 8 that is located at outside the sample conveying tube 3, sample conveying tube 3 upper ends have valve A1, the lower end is provided with lower end 9, and outer tube 8 lower ends are provided with down end plug 10, forms airspace between lower end 9 and the following end plug 10, sample conveying tube 3 lower ends communicate with gas piping 1 with gap between the outer tube 8 through this gap and sample conveying tube 3, and gas piping 1 upper end is provided with valve A 2It also comprises the plenum chamber of being made up of loam cake 5 and lower cover 7, be provided with dividing plate 6 in the case its inner chamber is separated into chamber and following chamber, sample conveying tube 3 from bottom to top runs through and is installed on the plenum chamber, and sample conveying tube 3 is connected with loam cake 5, outer tube 8 upper ends are connected with lower cover 7, and communicate with following chamber, gas piping 1 is installed on the loam cake 5, and it communicates with following chamber, another root gas piping 2 also is installed on the loam cake 5, and its upper end also is provided with valve B 2, sample conveying tube 3 sidewalls have air hole, communicate with another root gas piping 2 through last chamber.
As Fig. 1, Fig. 2 and shown in Figure 3, open vacuum pump 21 and vacuum solenoid A 1, B 2Air-flow as shown in Figure 1, to irradiation direction flight, during to the photoelectric detector 12 in irradiation devices the place ahead, photoelectric detector 12 sends signal to the sample box 4 of putting into injector 13, by the automatic open valve A of control system under delivery air drives 2, send into buffer gas flow.Like this, sample is when arriving position shown in Figure 2, because the effect of back draught, sample can't continue descending, but does not also have power reverse flight, can only be suspended in this position, and until closing pump valve, sample is just slowly fallen the pipe end.This point is to managing the end apart from more little, and the suffered impulsive force of sample is more little, and this distance is according to structural design.In addition, during sample delivery, also can adopt valve A 1, A 2And B 2The mode of Kai Qiing simultaneously, this is only influential to transporting velocity, and buffering effect is not had influence.
After sample is finished irradiation, open vacuum pump 21 and vacuum solenoid A 2, B 1, sample box 4 is sent to receiver 15 under the drive of delivery air.
The utility model shows that through debugging test sample box goes into to pile buffering effect fine.Sample goes into that heap adopts in actual use be three valves open simultaneously go into to pile buffering method, when sample box is run at high speed to the heap top, the photoelectric detector on heap top sends signal to control system, the setting-up time of delaying time, three valves are closed simultaneously, sample height about 1.4m at the bottom of the distance irradiation tube falls, and can hear that outside managing slight sample drops down onto the pipe sound at the end.When sample is sent to the detection analysis position,, reduce time of delivery for improving transporting velocity, during photoelectric detector before sample is crossed the detection analysis position, just open the buffer gas flow steam supply valve, behind the setting-up time of delaying time, close three valves, sample buffering effect herein is also fine.The utility model is mainly used in experimental reactor and carries the neutron activation analysis sample.

Claims (1)

1. a neutron activation analysis sample strength is carried snubber assembly, and it comprises sample conveying tube (3) and be located at the outer tube (8) of its outside that sample conveying tube (3) upper end has valve (A 1), the lower end is provided with lower end (9), outer tube (8) lower end is provided with down end plug (10), form airspace between lower end (9) and the following end plug (10), sample conveying tube (3) lower end communicates with gas piping (1) with gap between the outer tube (8) through this gap and sample conveying tube (3), and gas piping (1) upper end is provided with valve (A 2), it is characterized in that: it also comprises the plenum chamber of being made up of loam cake (5) and lower cover (7), be provided with dividing plate (6) in the case its inner chamber is separated into chamber and following chamber, sample conveying tube (3) from top to bottom runs through and is installed on the plenum chamber, and sample conveying tube (3) is connected with loam cake (5), outer tube (8) upper end is connected with lower cover (7), and communicate with following chamber, gas piping (1) is installed on the loam cake (5), and it communicates with following chamber, another root gas piping (2) also is installed on the loam cake (5), and its upper end also is provided with valve (B 2), sample conveying tube (3) sidewall has air hole, communicates with gas piping (2) through last chamber.
CN01275092U 2001-11-27 2001-11-27 Neutron activating analysis sample pneumatic conveyer buffer unit Expired - Lifetime CN2508240Y (en)

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Application Number Priority Date Filing Date Title
CN01275092U CN2508240Y (en) 2001-11-27 2001-11-27 Neutron activating analysis sample pneumatic conveyer buffer unit

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Application Number Priority Date Filing Date Title
CN01275092U CN2508240Y (en) 2001-11-27 2001-11-27 Neutron activating analysis sample pneumatic conveyer buffer unit

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344659A (en) * 2013-07-17 2013-10-09 中国原子能科学研究院 Multi-channel sample changer
CN103466325A (en) * 2012-06-08 2013-12-25 中国原子能科学研究院 Sample irradiation and transmission system and positive-negative pressure conversion device used for system
CN105110009A (en) * 2008-10-15 2015-12-02 北京银融科技有限责任公司 Convenient receiving method and device
CN107422366A (en) * 2017-08-18 2017-12-01 中国工程物理研究院核物理与化学研究所 Neutron activation sample quick transmission devices
CN107481775A (en) * 2017-08-18 2017-12-15 中国工程物理研究院核物理与化学研究所 A kind of reactor sample irradiation device
CN107688196A (en) * 2017-08-18 2018-02-13 中国工程物理研究院核物理与化学研究所 The device of harvesting and storing of pile neutron activated sample
CN107688035A (en) * 2017-08-18 2018-02-13 中国工程物理研究院核物理与化学研究所 A kind of decelerator for heap according to sample transfer
CN109406811A (en) * 2017-08-18 2019-03-01 中国工程物理研究院核物理与化学研究所 Straight trip commutator for irradiation sample transmission

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105110009A (en) * 2008-10-15 2015-12-02 北京银融科技有限责任公司 Convenient receiving method and device
CN103466325A (en) * 2012-06-08 2013-12-25 中国原子能科学研究院 Sample irradiation and transmission system and positive-negative pressure conversion device used for system
CN103466325B (en) * 2012-06-08 2015-12-02 中国原子能科学研究院 Sample irradiation and transmission system and the positive/negative-pressure transfer device for this system
CN103344659A (en) * 2013-07-17 2013-10-09 中国原子能科学研究院 Multi-channel sample changer
CN103344659B (en) * 2013-07-17 2015-06-17 中国原子能科学研究院 Multi-channel sample changer
CN107481775A (en) * 2017-08-18 2017-12-15 中国工程物理研究院核物理与化学研究所 A kind of reactor sample irradiation device
CN107422366A (en) * 2017-08-18 2017-12-01 中国工程物理研究院核物理与化学研究所 Neutron activation sample quick transmission devices
CN107688196A (en) * 2017-08-18 2018-02-13 中国工程物理研究院核物理与化学研究所 The device of harvesting and storing of pile neutron activated sample
CN107688035A (en) * 2017-08-18 2018-02-13 中国工程物理研究院核物理与化学研究所 A kind of decelerator for heap according to sample transfer
CN109406811A (en) * 2017-08-18 2019-03-01 中国工程物理研究院核物理与化学研究所 Straight trip commutator for irradiation sample transmission
CN107481775B (en) * 2017-08-18 2019-04-09 中国工程物理研究院核物理与化学研究所 A kind of reactor sample irradiation device
CN107688196B (en) * 2017-08-18 2019-06-28 中国工程物理研究院核物理与化学研究所 The device of harvesting and storing of pile neutron activated sample
CN107688035B (en) * 2017-08-18 2020-05-19 中国工程物理研究院核物理与化学研究所 Speed reducer for transmission of piled reference samples
CN109406811B (en) * 2017-08-18 2022-03-18 中国工程物理研究院核物理与化学研究所 Straight commutator for irradiation sample transmission

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GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20111127

Granted publication date: 20020828