CN210863251U - Radioactive feed liquid sampling system - Google Patents
Radioactive feed liquid sampling system Download PDFInfo
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- CN210863251U CN210863251U CN201921330823.5U CN201921330823U CN210863251U CN 210863251 U CN210863251 U CN 210863251U CN 201921330823 U CN201921330823 U CN 201921330823U CN 210863251 U CN210863251 U CN 210863251U
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Abstract
The utility model discloses a radioactive material liquid sampling system, including the feed liquid storage tank and the sampling unit that are used for saving radioactive material liquid, still include middle unit, middle unit is including middle groove, middle groove is located the feed liquid storage tank with between the sampling unit, and with feed liquid storage tank intercommunication is used for keeping in the follow the radioactive material liquid that the feed liquid storage tank was derived, in order to supply the sampling unit sample. The utility model discloses the problem of taking a sample can be solved to the radioactive material liquid in the big difference in height storage tank to the sampling system.
Description
Technical Field
The utility model particularly relates to a radioactive material liquid sampling system.
Background
The nuclear fuel post-processing plant needs to sample the radioactive material liquid at different points in the process for analyzing the chemical components, radioactivity, elements, nuclides, physical properties and the like in the material liquid, so as to ensure the safe, stable and effective operation of the process and obtain qualified products. However, a series of processes for the reprocessing of nuclear fuels are carried out under radioactive conditions where the level of radioactivity in the environment is very high and cannot be directly entered into for sampling. Therefore, when sampling nuclear fuel reprocessing plants, vacuum assisted air lift sampling is typically employed to minimize the possibility of contact with radioactive feed solutions.
However, the maximum elevation height (i.e. the elevation height of water under normal atmospheric pressure) of radioactive material liquid by the conventional vacuum-assisted air-lift sampling method is only about 13 m. In nuclear fuel reprocessing plants, the co-decontamination separation cycle and the plutonium purification cycle generally require the use of relatively high extraction columns (up to 15m), which are located in equipment rooms having a height of up to 20m, and which are subject to factors such as the location of the equipment rooms, and the sampling devices are generally disposed above the equipment rooms. Therefore, for the sump located at the bottom of the equipment room and requiring sampling, the vertical height of the sump and the sampling device may exceed the maximum lifting height of the conventional vacuum assisted air lifting sampling method, and it is difficult to transfer the material liquid in the sump to the sampling device.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is not enough to the above existence, provides a radioactivity feed liquid sampling system for solve because of the too big problem that leads to unable smooth sample of sample height difference.
The utility model provides a radioactive material liquid sampling system, its technical scheme as follows:
a radioactive feed liquid sampling system comprises a feed liquid storage tank for storing radioactive feed liquid, a sampling unit and an intermediate unit, wherein the intermediate unit comprises an intermediate tank,
the middle groove is arranged between the feed liquid storage tank and the sampling unit, is communicated with the feed liquid storage tank and is used for storing radioactive feed liquid led out from the feed liquid storage tank so as to be extracted by the sampling unit.
Preferably, the intermediate unit further comprises a first conveying unit, the intermediate tank is communicated with the feed liquid storage tank through the first conveying unit,
the first conveying unit comprises a first lifting pipe, a first air lifting bottom section and a first compressed air pipe,
the two ends of the first lifting pipe are respectively connected with the feed liquid storage tank and the middle tank, the first air lifting bottom section is arranged on the first lifting pipe,
the first air compression pipe is connected with the first air lifting bottom section and used for supplying air to the first air lifting bottom section.
Preferably, the first riser comprises a bend section and a straight section,
one end of the bent pipe section is connected with the feed liquid storage tank, the other end of the bent pipe section is connected with the straight pipe section, and the other end of the straight pipe section is connected with the intermediate tank;
the first air lifting bottom section is arranged at the joint of the elbow section and the straight pipe section.
Preferably, the first air lifting bottom section is positioned at a height lower than the height of the bottom of the feed liquid storage tank,
the gas pressure in the first pressure hollow pipe is 0.2-0.3 MPa.
Preferably, the first delivery unit further comprises a backflow device, the backflow device comprises a backflow pipe and a first emptying pipe,
two ends of the return pipe are respectively connected with the intermediate tank and the feed liquid storage tank;
and two ends of the first emptying pipe are respectively connected with the bottom of the middle groove and the return pipe.
Preferably, the nominal diameter of the first emptying pipe is smaller than the nominal diameter of the return pipe.
Preferably, the sampling unit comprises a sampling device and a second conveying unit, the second conveying unit is used for conveying the radioactive feed liquid stored in the middle tank to the sampling device,
the second conveying unit comprises a second lifting pipe, a second air lifting bottom section, a second compressed air pipe, a compressed air ejector, a third compressed air pipe, an intermediate container and a second emptying pipe,
two ends of the second riser are respectively connected with the middle groove and the sampling device;
the second air lifting bottom section is arranged on the second air lifting pipe, and the second air compression pipe is connected with the second air lifting bottom section and used for supplying air to the second air lifting bottom section;
the third compressed air pipe is connected with the compressed air ejector and used for supplying air to the compressed air ejector;
the intermediate container is arranged between the intermediate tank and the sampling device and is positioned on a connecting pipeline between the air-compressing ejector and the sampling device;
and two ends of the second emptying pipe are respectively connected with the bottom of the middle container and the middle groove.
Preferably, the gas pressure in the second air compressing pipe is 0.2-0.3MPa, and the gas pressure in the third air compressing pipe is 0.5-0.7 MPa.
Preferably, the number of the middle grooves is multiple, the middle grooves are respectively arranged at different height positions between the feed liquid storage tank and the sampling unit, and the middle grooves are sequentially communicated with one another.
Preferably, the feed liquid storage tank is a large-height difference storage tank.
The utility model provides a radioactive material liquid sampling system, mainly used take a sample to the feed liquid in the big difference in height storage tank, its beneficial effect specifically as follows:
(1) through setting up middle groove, carry the radioactivity feed liquid in the feed liquid storage tank to the higher middle groove in position earlier, highly promoting the feed liquid promptly tentatively, carry out the vacuum assisted air to the feed liquid in the middle groove again and promote the sample to indirect increase the sample height, solved traditional sampling system and can't realize carrying out the difficult problem of taking a sample to the feed liquid of the storage tank of big difference in height.
(2) What carry out preliminary promotion to the feed liquid height adopts is air lift's mode, has avoided causing dilution or pollution scheduling problem to the feed liquid, has reduced the analysis error that the sample caused.
(3) Through setting up reflux unit, after the sample, make the interior feed liquid of intermediate tank flow back to the feed liquid storage tank, avoided the accumulation of radioactive feed liquid, make the feed liquid that next sample obtained more accurate reliable.
(4) Simple structure, convenient operation and maintenance, safety and reliability.
Drawings
Fig. 1 is a schematic structural diagram of a radioactive material liquid sampling system in embodiment 1 of the present invention.
In the figure: 1-a feed liquid storage tank; 2-an intermediate tank; 3-a sampling device; 31-a sampling chamber; 41-bending the pipe section; 42-a straight tube section; 5-a first airlift bottom section; 6-a first compressed air pipe; 7-a return pipe; 8-a first emptying pipe; 9-a second riser; 10-a second airlift bottom section; 11-a second compressed air pipe; 121-a first conduit; 122-a second conduit; 13-an intermediate container; 14-a second empty tube; 15-a compressed air ejector; 16-third pneumatic tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
Because the prior art has the problems that the feed liquid in the storage tank with large height difference can not be sampled and the like, the utility model provides a radioactive feed liquid sampling system which can greatly improve the sampling height, comprising a feed liquid storage tank for storing the radioactive feed liquid, a sampling unit and an intermediate unit, wherein the intermediate unit comprises an intermediate tank,
the middle groove is arranged between the feed liquid storage tank and the sampling unit, is communicated with the feed liquid storage tank and is used for temporarily storing the radioactive feed liquid guided out from the feed liquid storage tank so as to sample by the sampling unit.
Example 1
As shown in fig. 1, the present embodiment provides a radioactive material liquid sampling system, which includes a material liquid storage tank 1 for storing radioactive material liquid, a sampling unit, and an intermediate unit, where the intermediate unit includes an intermediate tank 2, and the intermediate tank 2 is disposed between the material liquid storage tank 1 and the sampling unit, is communicated with the material liquid storage tank 1, and is used for storing radioactive material liquid guided from the material liquid storage tank 1, so as to be extracted by the sampling unit.
Further, the intermediate unit further comprises a first conveying unit, the intermediate tank 2 is communicated with the feed liquid storage tank 1 through the first conveying unit, the first conveying unit comprises a first lifting pipe, a first air lifting bottom joint 5 and a first compressed air pipe 6, wherein: the two ends of the first lifting pipe are respectively connected with the feed liquid storage tank 1 and the middle tank 2, the first air lifting bottom section 5 is arranged on the first lifting pipe, and the first compressed air pipe 6 is connected with the first air lifting bottom section and used for supplying air to the first air lifting bottom section 5.
Specifically, the feed liquid storage tank 1 is a container for holding radioactive feed liquid in the nuclear fuel post-treatment process, and the sampling unit is arranged above the feed liquid storage tank 1 and has a certain height difference with the feed liquid storage tank 1. In this embodiment, the material liquid storage tank 1 is preferably a large-height-difference storage tank, that is, the height difference between the material liquid storage tank 1 and the sampling unit is large, for example, the height difference reaches 20m, at this time, it is difficult to sample the material liquid in the material liquid storage tank 1 by using a conventional sampling system, of course, the material liquid storage tank may also be a storage tank which can be used for a conventional sampling system to sample, for example, the height difference between the material liquid storage tank 1 and the sampling unit is about 13m, and the height difference between the material liquid storage tank 1 and the sampling unit is not further limited in this embodiment.
Further, the first riser comprises a bent pipe section 41 and a straight pipe section 42, one end of the bent pipe section 41 is connected with the feed liquid storage tank 1, the other end of the bent pipe section 41 is connected with the straight pipe section 42, and the other end of the straight pipe section 42 is connected with the intermediate tank 2; the first airlift bottom section 5 is provided at the junction of the bend section 41 and the straight section 42.
Specifically, one end of the elbow section 41 is connected to the bottom of the feed liquid storage tank 1, and the other end of the elbow section 41 is connected to the first air-lift bottom section 5. The first air lifting bottom section 5 is a special tee joint, the other two interfaces of the first air lifting bottom section are respectively connected with the straight pipe section 42 and the first pneumatic pipe 6, and the other end of the straight pipe section 42 is connected with the upper part or the top of the middle groove 2 so as to convey feed liquid in the first lifting pipe to the middle groove 2, and therefore the height of the feed liquid is lifted.
The interface of the first air lifting bottom section 5 for connecting the first pneumatic tube 6 is a one-way channel (i.e. the circulation medium can only enter the first air lifting bottom section from the first pneumatic tube, but can not enter the first pneumatic tube from the first lifting bottom section), so that the feed liquid storage tank 1 and the first lifting tube form a structure similar to a communicating vessel, i.e. the liquid level of the feed liquid in the first lifting tube is consistent with the liquid level in the feed liquid storage tank 1. In this embodiment, the medium flowing through the first pneumatic tube 6 is compressed air, and the pressure thereof (in this embodiment, the pressure is an absolute pressure) is 0.2 to 0.3MPa, preferably 0.3 MPa.
The first air lift bottom section 5 is located at a position lower than the liquid level of the feed liquid in the feed liquid storage tank 1 or lower than the bottom of the feed liquid storage tank 1, preferably lower than the bottom of the feed liquid storage tank 1 in this embodiment, so that the liquid level of the feed liquid in the first air lift bottom section is always higher than the position of the first air lift bottom section 5, that is, the first air lift bottom section 5 is always submerged by the feed liquid. The submergence degree (namely the ratio of the height difference between the liquid level of the feed liquid and the first air lifting bottom section to the height difference between the position of the straight pipe section connecting the middle groove and the first air lifting bottom section) of the first air lifting bottom section 5 is 35-60%. The first airlift bottom section 5 maintains a certain height difference with the lowest part of the first riser, which can be selected according to the actual situation, and is preferably 500mm in this embodiment.
The intermediate groove 2 may be of any shape and size, and this embodiment is not further limited. The bottom of the intermediate tank 2 in this embodiment is preferably tapered. The position of the middle groove 2 is between the material liquid storage tank 1 and the sampling unit, and the height difference between the middle groove 2 and the material liquid storage tank 1 is less than or equal to the material liquid height which can be lifted by the first air lifting unit. In this embodiment, the lifting height of the feed liquid by the first conveying unit is preferably 5 to 7m, that is, the height difference between the intermediate tank 2 and the feed liquid storage tank 1 is preferably 5 to 7 m.
In the actual operation process, when the difference in height between feed liquid storage tank 1 and the sampling unit is too big, that is, the height of feed liquid storage tank 1 is big enough, when setting up a first conveying unit and still being difficult to realize the sample, at this moment, can be between intermediate tank 2 and the sampling unit, set up one or more intermediate tank 2 and first conveying unit again (carry out multistage promotion to the feed liquid height promptly), further promote the feed liquid height to improve total sampling height.
Therefore, the number of the intermediate grooves 2 in the present embodiment may be not only one but also plural. When a plurality of intermediate tanks 2 need to be arranged, the intermediate tanks are respectively arranged at different height positions between the feed liquid storage tank 1 and the sampling unit, the intermediate tanks 2 are preferably communicated with each other in sequence in the same way as the first conveying unit, the radioactive feed liquid in the feed liquid storage tank 1 is subjected to multistage air lifting, the height of the feed liquid is increased, the height difference between the sampling unit and the feed liquid storage tank 1 is indirectly reduced, and therefore the sampling of the large-height-difference storage tank is realized.
Further, the first conveying unit further comprises a backflow device, the backflow device comprises a backflow pipe 7 and a first emptying pipe 8, and two ends of the backflow pipe 7 are respectively connected with the intermediate tank 2 and the feed liquid storage tank 1; two ends of the first emptying pipe 8 are respectively connected with the bottom of the middle groove 2 and the return pipe 7.
Specifically, one end of the return pipe 7 is connected with the middle upper part of the intermediate tank 2 and is lower than the connection part of the straight pipe section 42 and the intermediate tank 2. The other end of the return pipe 7 is connected to the feed liquid storage tank 1, preferably extending into the feed liquid storage tank 1 from the top of the feed liquid storage tank 1, so that excess feed liquid overflows back into the feed liquid storage tank 1 when the feed liquid level in the intermediate tank 2 exceeds the return pipe. The nominal diameter of the return pipe 7 may be DN40 or DN25, or may be any other pipe diameter, which may be specifically selected according to actual requirements, and this embodiment is not further limited.
One end of the first emptying pipe 8 is connected with the bottom of the middle tank 2, the other end of the first emptying pipe is connected with the return pipe 7, and the feed liquid in the middle tank 2 can be completely poured back to the feed liquid storage tank 1 through the first emptying pipe 8.
The nominal diameter of the first emptying pipe 8 is smaller than (at least 4-5 grades smaller than) the nominal diameter of the return pipe 7, so as to ensure that the feed liquid conveyed into the intermediate tank 1 is not emptied enough in unit time, and the feed liquid in the intermediate tank 1 can keep a certain liquid level height, so that the sampling operation is convenient. In the present embodiment, the nominal diameter of the first emptying tube 8 is preferably DN10 or DN 6.
Further, the sampling unit comprises a sampling device 3 and a second conveying unit, the second conveying unit is used for conveying the radioactive material liquid stored in the intermediate tank 2 to the sampling device 3, the second conveying unit comprises a second lifting pipe 9, a second air lifting bottom joint 10, a second compressed air pipe 11, a compressed air ejector 15, a third compressed air pipe 16, an intermediate container 13 and a second emptying pipe 14, wherein: two ends of the second lifting pipe 9 are respectively connected with the middle groove 1 and the sampling device 3; the second air lifting bottom section 10 is arranged on the second air lifting pipe 9, and the second air compression pipe 11 is connected with the second air lifting bottom section 10 and used for supplying air to the second air lifting bottom section 10; the compressed air ejector 15 is connected with the sampling device 3 through a connecting pipeline, and the third compressed air pipe 16 is connected with the compressed air ejector 15 and used for supplying air to the compressed air ejector 15; the intermediate container 13 is arranged between the air-compression injector 15 and the sampling device 3 and is arranged on a connecting pipeline between the air-compression injector 15 and the sampling device 3; the two ends of the second emptying pipe 14 are respectively connected with the bottom of the middle container 13 and the middle groove 3.
Specifically, one end (i.e. the lower end) of the second lift pipe 9 is connected with the intermediate tank 2, and the joint of the two is located below the liquid level of the feed liquid in the intermediate tank 2, so as to ensure that the feed liquid in the intermediate tank 2 can enter the second lift pipe 9. The position of sampling device 3 is located the top of middle groove 2, and sampling device 3 includes sampling chamber 31, and sampling chamber 31 is used for holding the feed liquid, and the other end (being the upper end) of second riser 9 is connected with the bottom of sampling chamber 31, and the feed liquid in middle groove 2 is carried to sampling chamber 31 through second riser 9.
The second air lifting bottom section 10 is arranged on the second lifting pipe 9, and the height difference between the position of the second air lifting bottom section 10 and the middle tank 2 is smaller than the vacuum suction height, so that when the second conveying unit is started, the feed liquid in the middle tank 2 can be sucked to submerge the second air lifting bottom section 10 and reach a certain submerging height, and the submerging height of the second air lifting bottom section 10 is not further limited in the embodiment.
A second pneumatic tube 11 is connected to the second airlift bottom section 10 for feeding compressed air to the second airlift bottom section 10. The gas pressure in the second pneumatic tube 11 is 0.2 to 0.3MPa, preferably 0.3MPa in this embodiment.
Further, the piping includes a first piping 121 for connecting the sampling device 3 and the intermediate container 13, and a second piping 122 for connecting the intermediate container 13 and the air-pressure ejector 15.
Specifically, sampling chamber 31 is disposed in sampling device 3, one end (inlet) of first pipeline 121 is preferably connected to the bottom of sampling chamber 31, and extends to a certain height inside sampling chamber 31, that is, the inlet of first pipeline 121 is located at a certain height inside sampling chamber 31, so that it is not only avoided that the feed liquid in sampling chamber 31 directly enters intermediate container 13 through first pipeline 121 during sampling, and a certain amount of feed liquid can be retained in the sampling chamber during sampling, for sampling, but also the excess feed liquid in sampling chamber 31 (i.e., the feed liquid exceeding the inlet of first pipeline) can be returned to intermediate container 13 when the liquid level of the feed liquid in sampling chamber 31 exceeds the height of the inlet of first pipeline. As another preferred scheme, the inlet of the first pipe 121 may be connected to the sidewall of the sampling chamber 31, and the inlet of the first pipe 121 is located at a certain height from the bottom of the sampling chamber 31. The height of the inlet position of the first conduit 121 in this embodiment can be selected according to actual conditions, and this embodiment is not further limited.
The other end of the first pipe 121 is preferably connected to the top of the intermediate container 13. One end of the second pipe 122 is preferably connected to the top of the intermediate container 13, and the other end thereof is connected to the air-pressure ejector 15. A third pneumatic line 16 is connected to the pneumatic ejector 15 for supplying air to the pneumatic ejector 15 during sampling to create a negative pressure for powering the second delivery unit. The intermediate container 13 is used to separate the gas and liquid entering the first conduit 121, leaving the liquid (feed liquid) in the intermediate container 13, and the gas enters the air-pressure ejector 15 through the second conduit 122 and is discharged. The intermediate container 13 may be of any shape and size, and this embodiment is not further limited. The bottom of the intermediate container 13 in this embodiment is preferably tapered.
The second emptying pipe 14 has one end connected to the bottom of the intermediate container 13 and the other end connected to the intermediate tank 2 for emptying the feed liquid in the intermediate container 13 back to the intermediate tank 2.
The working process of the radioactive material liquid sampling system in the embodiment is as follows:
and S1, starting the first conveying unit and lifting the material liquid.
Compressed air of 0.3MPa is introduced into the first air lifting bottom joint 5 through the first pressure air pipe 6, so that the feed liquid in the feed liquid storage tank 1 is conveyed to the intermediate tank 2 through the first lifting pipe, the feed liquid is slowly accumulated in the intermediate tank 2, when the feed liquid height in the intermediate tank 2 reaches the inlet height of the return pipe 7, the redundant feed liquid flows out through the return pipe 7 and flows back to the feed liquid storage tank 1, after enough time circulation, the feed liquid in the intermediate tank 2 and the feed liquid in the feed liquid storage tank 1 basically reach the same components, and sampling is carried out at the moment, and the feed liquid closest to the feed liquid in the feed liquid storage tank 1 can be obtained.
And S2, opening the second conveying unit to sample the feed liquid.
Opening a compressed air ejector 15, inputting 0.6MPa of compressed air into the compressed air ejector 15 through a third compressed air pipe 16 to cause negative pressure, so that the feed liquid in the intermediate tank 2 is sucked into the second lifting pipe 9, and the second air lifting bottom section 10 is immersed; at this time, 0.3MPa of compressed air is input into the second air lifting bottom section 10 through the second air compression pipe 11, so that the feed liquid in the second lifting pipe 9 is conveyed to the sampling chamber 31; when the feed liquid in the sampling chamber 31 reaches a certain liquid level height, sampling operation is carried out; the excess feed liquid enters the intermediate container 13 through the first pipe 121 and then flows back to the intermediate tank 2 through the second emptying pipe 14.
And S3, closing the second conveying unit and then closing the first conveying unit after sampling.
After sampling, stopping inputting compressed gas to the second air lifting bottom section 10 and the air compressing ejector 15, and enabling feed liquid of the sampling chamber 31 and the intermediate container 13 to respectively flow back to the intermediate tank through the second air lifting pipe 9 and the second emptying pipe 14; and stopping inputting compressed air into the first air lifting bottom joint 5, so that the feed liquid in the middle tank 2 is totally refluxed to the feed liquid storage tank 1 through the first emptying pipe 7.
The radioactive liquid sampling system disclosed in the embodiment has the following main beneficial effects:
(1) through setting up middle groove, carry the radioactivity feed liquid in the feed liquid storage tank to the higher middle groove in position earlier, highly promoting the feed liquid promptly tentatively, carry out the vacuum assisted air to the feed liquid in the middle groove again and promote the sample to indirect increase the sample height, solved traditional sampling system and can't realize carrying out the difficult problem of taking a sample to the feed liquid of the storage tank of big difference in height.
(2) What carry out preliminary promotion to the feed liquid height adopts is air lift's mode, has avoided causing dilution or pollution scheduling problem to the feed liquid, has reduced the analysis error that the sample caused.
(3) Through setting up reflux unit, after the sample, make the interior feed liquid of intermediate tank flow back to the feed liquid storage tank, avoided the accumulation of radioactive feed liquid, make next sample obtain more accurate reliable of feed liquid.
(4) Simple structure, convenient operation and maintenance, safety and reliability.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the embodiments of the invention, and such modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A radioactive feed liquid sampling system comprises a feed liquid storage tank (1) for storing radioactive feed liquid and a sampling unit, and is characterized by further comprising an intermediate unit, wherein the intermediate unit comprises an intermediate tank (2),
the middle groove is arranged between the feed liquid storage tank and the sampling unit, is communicated with the feed liquid storage tank and is used for temporarily storing the radioactive feed liquid guided out from the feed liquid storage tank so as to sample by the sampling unit.
2. The radioactive feed solution sampling system according to claim 1, wherein the intermediate unit further comprises a first transport unit, the intermediate tank and the feed solution storage tank being in communication with each other via the first transport unit,
the first conveying unit comprises a first lifting pipe, a first air lifting bottom joint (5) and a first compressed air pipe (6),
the two ends of the first lifting pipe are respectively connected with the feed liquid storage tank and the middle tank, the first air lifting bottom section is arranged on the first lifting pipe,
the first air compression pipe is connected with the first air lifting bottom section and used for supplying air to the first air lifting bottom section.
3. The radioactive feed sampling system according to claim 2, wherein the first riser comprises a bent section (41) and a straight section (42),
one end of the bent pipe section is connected with the feed liquid storage tank, the other end of the bent pipe section is connected with the straight pipe section, and the other end of the straight pipe section is connected with the intermediate tank;
the first air lifting bottom section is arranged at the joint of the elbow section and the straight pipe section.
4. The radioactive feed solution sampling system according to claim 3, wherein the first air-lift bottom node is positioned at a height lower than a height of the bottom of the feed solution storage tank,
the gas pressure in the first pressure hollow pipe is 0.2-0.3 MPa.
5. Radioactive feed liquid sampling system according to claim 2, wherein the first transportation unit further comprises a return device comprising a return pipe (7) and a first emptying pipe (8),
two ends of the return pipe are respectively connected with the intermediate tank and the feed liquid storage tank;
and two ends of the first emptying pipe are respectively connected with the bottom of the middle groove and the return pipe.
6. The radioactive material sampling system according to claim 5, wherein a nominal diameter of the first emptying tube is smaller than a nominal diameter of the return tube.
7. Radioactive feed sampling system according to any of claims 1 to 6, characterized in that the sampling unit comprises a sampling device (3) and a second transfer unit for transferring radioactive feed stored in the intermediate tank into the sampling device,
the second conveying unit comprises a second lifting pipe (9), a second air lifting bottom section (10), a second compressed air pipe (11), a compressed air ejector (15), a third compressed air pipe (16), an intermediate container (13) and a second emptying pipe (14),
two ends of the second riser are respectively connected with the middle groove and the sampling device;
the second air lifting bottom section is arranged on the second air lifting pipe, and the second air compression pipe is connected with the second air lifting bottom section and used for supplying air to the second air lifting bottom section;
the third compressed air pipe is connected with the compressed air ejector and used for supplying air to the compressed air ejector;
the intermediate container is arranged between the intermediate tank and the sampling device and is positioned on a connecting pipeline between the air-compressing ejector and the sampling device;
and two ends of the second emptying pipe are respectively connected with the bottom of the middle container and the middle groove.
8. The radioactive material sampling system according to claim 7, wherein the gas pressure in the second pressure hollow tube is 0.2-0.3MPa, and the gas pressure in the third pressure hollow tube is 0.5-0.7 MPa.
9. The radioactive material liquid sampling system according to any one of claims 1 to 6, wherein the number of the intermediate tanks is plural, and plural intermediate tanks are respectively provided at different height positions between the material liquid storage tank and the sampling unit, and each intermediate tank is communicated with each other in turn.
10. The radioactive feed sampling system according to any one of claims 1 to 6, wherein the feed reservoir is a large-height differential reservoir.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921330823.5U CN210863251U (en) | 2019-08-15 | 2019-08-15 | Radioactive feed liquid sampling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921330823.5U CN210863251U (en) | 2019-08-15 | 2019-08-15 | Radioactive feed liquid sampling system |
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| CN210863251U true CN210863251U (en) | 2020-06-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883275A (en) * | 2020-07-22 | 2020-11-03 | 中国核电工程有限公司 | Continuous deslagging method and system |
| CN112729935A (en) * | 2020-11-26 | 2021-04-30 | 中国核电工程有限公司 | Feed liquid sampling device and automatic feed liquid sampling and sample sending system |
-
2019
- 2019-08-15 CN CN201921330823.5U patent/CN210863251U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883275A (en) * | 2020-07-22 | 2020-11-03 | 中国核电工程有限公司 | Continuous deslagging method and system |
| CN111883275B (en) * | 2020-07-22 | 2023-04-07 | 中国核电工程有限公司 | Continuous deslagging method and system |
| CN112729935A (en) * | 2020-11-26 | 2021-04-30 | 中国核电工程有限公司 | Feed liquid sampling device and automatic feed liquid sampling and sample sending system |
| CN112729935B (en) * | 2020-11-26 | 2024-01-05 | 中国核电工程有限公司 | Material liquid sampling device and automatic material liquid sampling and conveying system |
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