CN217211629U - Radioactive waste resin sampling device - Google Patents
Radioactive waste resin sampling device Download PDFInfo
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- CN217211629U CN217211629U CN202122832808.4U CN202122832808U CN217211629U CN 217211629 U CN217211629 U CN 217211629U CN 202122832808 U CN202122832808 U CN 202122832808U CN 217211629 U CN217211629 U CN 217211629U
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- waste resin
- pipeline
- metering tank
- negative pressure
- radioactive
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The utility model relates to a radioactive waste resin sampling device, belonging to the technical field of radioactive waste treatment, the device comprises a metering tank, the upper end of the metering tank is respectively communicated with a feeding pipeline and a vacuum pipeline, the other end of the feeding pipeline is connected with a telescopic sampling tube, and the telescopic sampling tube is inserted into a waste resin storage tank during sampling; the other end of the vacuum pipeline is connected with a negative pressure pump for providing negative pressure, and under the action of the negative pressure, the waste resin and the free water in the waste resin storage tank are conveyed into the metering tank through the feeding pipeline; the lower extreme intercommunication ejection of compact pipeline of metering tank, the ejection of compact pipeline other end intercommunication sample collecting bottle. The device provided by the utility model adopts a negative pressure conveying method to convey the waste resin and the free water from the waste resin storage tank into the metering container; the device has the advantages of simple structure, low cost, convenient operation and strong applicability.
Description
Technical Field
The utility model belongs to the technical field of radioactive waste treatment, specifically a radioactive spent resin sampling device.
Background
Radioactive spent resin from nuclear plant operations is collected in a spent resin storage tank/canister, typically containing a large amount of free water. Before the radioactive waste resin is treated, a sample is required to be sampled for radiochemical analysis, and the radioactive nuclide, the activity concentration thereof and the like in the radioactive waste resin are determined. At present, no relevant waste resin sampling device exists in China.
Disclosure of Invention
For solving the defect that prior art exists, the utility model aims to provide a useless resin sampling device of radioactivity uses the device can solve the useless resin and follow the difficult problem that storage tank/inslot acquireed representative sample.
In order to achieve the above purpose, the utility model adopts a technical scheme that:
a radioactive waste resin sampling device comprises a metering tank, wherein the upper end of the metering tank is respectively communicated with a feeding pipeline and a vacuum pipeline, the other end of the feeding pipeline is connected with a telescopic sampling tube, and the telescopic sampling tube is inserted into a waste resin storage tank during sampling; the other end of the vacuum pipeline is connected with a negative pressure pump for providing negative pressure, and under the action of the negative pressure, the waste resin and the free water in the waste resin storage tank are conveyed into the metering tank through the feeding pipeline; the lower extreme intercommunication ejection of compact pipeline of metering tank, the ejection of compact pipeline other end intercommunication sample collecting bottle.
Further, as above radioactive waste resin sampling device, the upper end of the metering tank is also communicated with a flushing pipeline, and the other end of the flushing pipeline is used for connecting a clean water source.
Further, the radioactive waste resin sampling device as described above is further provided with a weeping collecting tray below the sample collecting bottle for collecting the material discharged from the metering tank in the cleaning step.
Further, according to the radioactive waste resin sampling device, a filter is further arranged on the vacuum pipeline between the metering tank and the negative pressure pump and used for filtering radioactive aerosol generated by waste resin in the pipeline.
Further, as above radioactive waste resin sampling device the upper end of the metering tank is further provided with a level indicator for monitoring the liquid level of the waste resin in the metering tank in real time, providing an alarm function and controlling the recovery amount of the waste resin.
Furthermore, according to the radioactive waste resin sampling device, valves for controlling the on-off of each pipeline are respectively arranged on the feeding pipeline, the flushing pipeline, the vacuum pipeline and the discharging pipeline.
Further, according to the radioactive waste resin sampling device, the metering tank is in an inverted conical shape.
Further, in the radioactive spent resin sampling apparatus as described above, the type of the negative pressure pump includes a peristaltic pump and a vacuum pump.
Adopt the utility model provides a radioactive spent resin sampling device, beneficial effect lies in:
the utility model provides a telescopic sampling tube to obtain waste resin samples at different positions in a storage tank/tank aiming at a large-volume radioactive storage tank/tank; the waste resin containing free water is recycled into the metering container by adopting a negative pressure conveying method, the conveying process of the waste resin is carried out under the conditions of sealing and negative pressure, the radioactivity leakage can be prevented, and the safety is high. The utility model is not affected by the type of waste resin and the content of free water, and can realize the sampling of the waste resin in various storage tanks/tanks; can be designed in a modularized way, has the functions of radiation protection and mobility, and realizes the safe transfer after the waste resin is retrieved.
Drawings
Fig. 1 is a schematic structural diagram of a radioactive waste resin sampling device provided by the present invention;
in the figure: 1-a telescopic sampling tube, 2-a metering tank, 3-a sample collecting bottle, 4-a leakage collecting tray, 5-a filter, 6-a negative pressure pump and 7-a material level meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1, the radioactive waste resin sampling device provided by the utility model comprises a metering tank 2, wherein the metering tank 2 is in an inverted cone shape, the upper end of the metering tank 2 is respectively communicated with a feeding pipeline and a vacuum pipeline, the other end of the feeding pipeline is connected with a telescopic sampling tube 1, and the telescopic sampling tube 1 is inserted into a waste resin storage tank during sampling; the other end of the vacuum pipeline is connected with a negative pressure pump 6, and under the action of a certain negative pressure, the waste resin and the free water in the waste resin storage tank are conveyed into the metering tank 2 through a feeding pipeline; the lower extreme intercommunication ejection of compact pipeline of metering tank 2, the ejection of compact pipeline other end intercommunication sample collection bottle 3.
Specifically, the negative pressure pump 6 may be a peristaltic pump whose sampling amount is easy to control, or may be another type of pump capable of generating negative pressure, such as a vacuum pump.
The upper end of metering tank 2 still communicates has the washing pipeline, washes the pipeline other end and connects clean water source, and the sample is accomplished the back clean water accessible and is washed the pipeline and get into metering tank 2, washes remaining waste resin in charge-in pipeline, scalable sampling tube 1, metering tank 2 and the ejection of compact pipeline.
A weep collection pan 4 is also provided below the sample collection bottle 3 for collecting material that is discharged from the metering tank 2 during the cleaning step.
A filter 5 is also arranged on the vacuum pipeline between the metering tank 2 and the negative pressure pump 6 and is used for filtering radioactive aerosol generated by waste resin in the pipeline.
Still be provided with charge level indicator 7 in metering tank 2 upper end for the liquid level height of useless resin in real time monitoring metering tank 2 to provide alarming function, control the retrieval volume of useless resin.
Valves V1, V2, V3 and V4 are respectively arranged on the feeding pipeline, the flushing pipeline, the vacuum pipeline and the discharging pipeline, and the on-off of each pipeline is controlled through the valves, so that the operation requirements of each step are further realized.
The specific operation steps of using the radioactive waste resin sampling device to sample the radioactive waste resin are as follows:
s1, arranging the position of the sampling tube
The specific implementation steps are as follows: adjusting the length of the telescopic sampling tube 1 according to the position of the sampling point; the valve V1 is closed, and the retractable sampling tube 1 is inserted from the opening at the top of the waste resin storage tank, so that the inlet of the retractable sampling tube 1 reaches the sampling point. In the process of inserting the telescopic pipe, the waste resin and the free water cannot enter the telescopic pipe under the action of the air pressure in the telescopic pipe.
S2, waste resin recovery: the waste resin and the free water are transferred from the waste resin storage tank into the metering tank 2 by a vacuum pump.
The specific implementation steps are as follows: the valves V2 and V4 are closed, the valves V1 and V3 are opened, the negative pressure pump 6 is started, and the waste resin containing free water in the waste resin storage tank is hydraulically conveyed into the metering tank 2 by negative pressure. After the alarm of the level gauge 7, the valve V1 is closed and the valve V2 is opened. The negative pressure pump 6 was turned off, and the waste resin recovery was stopped.
S3, sample collection
The specific implementation steps are as follows: valve V4 is opened and the waste resin containing free water flows from metering tank 2 into sample collection bottle 3, and after sample collection is complete, sample collection bottle 3 is removed.
S4, cleaning of sampling device
The specific implementation steps are as follows: lifting the telescopic sampling tube 1 until the tube opening is separated from the surface of the material in the waste resin storage tank; closing valves V3 and V4; clean water is injected into the metering tank 2 from the valve V2 and flows out from the valve V1 to flush the residual waste resin in the telescopic sampling pipe; finally, the water injection is stopped, the valve V4 is opened, the metering tank 2 is emptied, and the discharged material is collected in the weep collection pan 4 and disposed of. The metering tank 2 can be repeatedly washed for 2-3 times.
The utility model provides a radioactive waste resin sampling device, which adopts a telescopic sampling tube to realize sampling at any position in a waste resin storage tank; waste resin and free water are conveyed into the metering container from the waste resin storage tank by adopting a negative pressure conveying method, the waste resin conveying process is carried out under the conditions of sealing and negative pressure, the radioactive leakage can be prevented, and the safety is high; the waste resin in the storage tank can be received and placed remotely through the flexible pipe, and the sampling device is particularly suitable for sampling the waste resin in a pit slot/tank which is difficult to access. The utility model is not affected by the type of the waste resin and the content of free water, and can realize the sampling of the waste resin in various storage tanks/grooves; can carry out the modularized design, have radiation protection and portable function, realize the safe transfer after the waste resin retrieves. The device has the advantages of simple structure, low cost, convenient operation and strong applicability.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The radioactive waste resin sampling device is characterized by comprising a metering tank (2), wherein the upper end of the metering tank (2) is respectively communicated with a feeding pipeline and a vacuum pipeline, the other end of the feeding pipeline is connected with a telescopic sampling tube (1), and the telescopic sampling tube (1) is inserted into a waste resin storage tank during sampling; the other end of the vacuum pipeline is connected with a negative pressure pump (6) for providing negative pressure, and under the action of the negative pressure, the waste resin and the free water in the waste resin storage tank are conveyed into the metering tank (2) through the feeding pipeline; the lower extreme intercommunication ejection of compact pipeline of metering tank (2), ejection of compact pipeline other end intercommunication sample collecting bottle (3).
2. The radioactive waste resin sampling device according to claim 1, wherein the upper end of the metering tank (2) is communicated with a flushing pipeline, and the other end of the flushing pipeline is connected with a clean water source.
3. The radioactive spent resin sampling device according to claim 2, wherein a weep collecting tray (4) is further provided below the sample collecting bottle (3) for collecting the material discharged from the metering tank (2) in the cleaning step.
4. The radioactive waste resin sampling device according to claim 3, wherein a filter (5) is further provided on the vacuum pipe between the metering tank (2) and the negative pressure pump (6) for filtering radioactive aerosol generated from waste resin in the pipe.
5. The radioactive waste resin sampling device according to claim 4, wherein a level meter (7) is further provided at the upper end of the metering tank (2) for real-time monitoring of the level of the waste resin in the metering tank (2) and providing an alarm function for controlling the amount of the recovered waste resin.
6. A radioactive spent resin sampling apparatus according to any one of claims 2 to 5, wherein valves for controlling the on/off of each line are provided on the feed line, the flushing line, the vacuum line and the discharge line, respectively.
7. The radioactive waste resin sampling device according to claim 1, wherein the metering tank (2) has an inverted cone shape in outer shape.
8. The radioactive spent resin sampling device according to claim 1, characterized in that the types of the negative pressure pump (6) include a peristaltic pump and a vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832808.4U CN217211629U (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122832808.4U CN217211629U (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217211629U true CN217211629U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122832808.4U Active CN217211629U (en) | 2021-11-18 | 2021-11-18 | Radioactive waste resin sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217211629U (en) |
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2021
- 2021-11-18 CN CN202122832808.4U patent/CN217211629U/en active Active
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