CN216559186U - Metering tank suitable for accurate measurement of 1AF feed liquid in commercial aftertreatment factory - Google Patents
Metering tank suitable for accurate measurement of 1AF feed liquid in commercial aftertreatment factory Download PDFInfo
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- CN216559186U CN216559186U CN202122155197.4U CN202122155197U CN216559186U CN 216559186 U CN216559186 U CN 216559186U CN 202122155197 U CN202122155197 U CN 202122155197U CN 216559186 U CN216559186 U CN 216559186U
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- metering
- feed liquid
- metering tank
- end enclosure
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Abstract
A metering tank suitable for accurately metering 1AF feed liquid in a commercial post-treatment plant comprises an upper end enclosure, a lower end enclosure and a cylinder body, wherein the lower end of the cylinder body is the lower end enclosure, and the middle part of the lower end enclosure is provided with a metering tank and a concave liquid accumulation pit; the upper end enclosure is of a flat bottom type, and a blowing measuring pipe, a blowing measuring pipe B, a sampling pipe, a discharging pipe, a liquid level limiting siphon pipe, a thermometer sleeve, a feeding pipe and a drainage pipe are welded at the upper part of the upper end enclosure. The metering tank with large volume and accurate metering has higher requirement on the cylindricity of the interior of the cylindrical barrel, and the linear relation of the key metering section is kept better; in addition, because more feed liquid is held, need set up the feed liquid cooling device, eliminate the influence of decay heat to the feed liquid temperature.
Description
Technical Field
The utility model belongs to the field of spent fuel post-treatment, and particularly relates to a metering tank suitable for accurate metering of 1AF feed liquid in a commercial post-treatment plant.
Background
In the field of spent fuel post-processing, nuclear material accounting is an important basis for entering nuclear material control, cost accounting, process control and quality assurance, wherein 1AF feed liquid volume measurement is the first key measurement point of the nuclear material accounting of a post-processing plant and is the key for implementing nuclear material balance. The metering tank is used for containing the 1AF material liquid and accurately metering the volume of the material liquid, and the equipment precision and the structure of the metering tank greatly contribute to controlling the uncertainty of volume metering.
The metering tank of a commercial post-treatment plant is remarkably large, the volume of the metering tank is 10 times that of the existing pilot plant and demonstration plant, the metering requirement on large-capacity 1AF feed liquid cannot be met by using the original design thought, and therefore the design of a large-scale metering tank body needs to be researched, and the structural form, decay heat cooling and critical safety measures of the metering tank are fully considered. And finally, verifying the reasonability of the design of the metering tank by developing a calibration test, and performing engineering application after verification.
Disclosure of Invention
The utility model aims to: the measuring tank is based on the research and development experience of a pilot plant feed liquid volume accurate measuring system, and the overall structural form of the 1AF measuring tank of the commercial spent fuel post-processing plant with the scale of 800 tons/year is designed and planned according to the structural form of the balance measuring tank of the Arup 2 post-processing plant.
The technical scheme of the utility model is as follows: a metering tank suitable for accurately metering 1AF feed liquid in a commercial post-treatment plant comprises an upper end enclosure, a lower end enclosure and a cylinder body, wherein the lower end of the cylinder body is the lower end enclosure, and the middle part of the lower end enclosure is provided with a metering tank and a concave liquid accumulation pit;
the upper end enclosure is flat-bottom, and a blowing measuring tube, a blowing measuring tube B, a sampling tube, a discharging tube, a liquid level limiting siphon tube, a thermometer sleeve, a feeding tube and a drainage tube are welded at the upper part of the upper end enclosure;
the concave liquid accumulation pit is cylindrical and concentric with the cylinder body.
The ratio of the diameter to the height of the concave liquid accumulation pit is 1: 1.
The lower end enclosure is in a semi-elliptical shape and is designed according to GB/T25198-.
2 lifting lugs are welded on the cylinder body.
4 adjustable supports are arranged on the cylinder body
The thermometer sleeve is provided with a platinum thermal resistor.
The liquid level siphon limiting pipes are three in number.
The number of the sampling tubes is three.
Still include the manhole and weld in metering tank upper cover.
The manhole comprises a flat cover, the flat cover is arranged on the barrel body through a buckle, a bolt, a nut and a flange, and a handle is arranged on the flat cover
The device also comprises a material liquid cooling device which is a shell-and-tube type and is arranged inside the metering tank.
The utility model has the following remarkable effects: compared with a small-volume 1AF metering tank, the metering tank with the large volume and accurate metering has higher requirement on the cylindricity of the interior of the cylindrical barrel, and the linear relation of a key metering section is kept better; in addition, because more feed liquid is held, need set up the feed liquid cooling device, eliminate the influence of decay heat to the feed liquid temperature. The beneficial effects are as follows:
the liquid level density and temperature measuring elements are more reasonable in layout, the temperature and density of liquid materials in different liquid level layers can be measured, and the obtained data are more reasonable and accurate;
in order to meet the operation requirement of a process system, three liquid level limiting siphons are arranged and used for accurately controlling the volume of the derived feed liquid;
and a feed liquid cooling device is additionally arranged and used for eliminating the influence of decay heat on temperature constancy.
Drawings
FIG. 1 is a schematic view of a metering tank suitable for accurate metering of commercial post-treatment plant 1AF feed liquid;
figure 2 is a schematic view of a manhole construction
In the figure: 1-lug, 2-blowing measuring tube I, 3-blowing measuring tube II, 4-sampling tube, 5-discharging tube, 6-liquid level limiting siphon tube I, 7-thermometer measuring sleeve, 8-feeding tube, 9-liquid level limiting siphon tube II, 10-upper sealing head, 11-barrel, 12-adjustable support, 13-feed liquid cooling device, 14-lower sealing head and 15-concave effusion pit; 22-fastener 23-bolt-nut 25-handle 26-flat cover 27 flange
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
A metering tank suitable for 1AF feed liquid accurate metering in commercial post-processing factory, including upper end enclosure 10, lower end enclosure 14, barrel 11, the bottom end of barrel 11 is lower end enclosure 14, the middle part of lower end enclosure 14 is that the metering tank is by the concave hydrops pit 15, the concave hydrops pit 15 is cylindrical, concentric with barrel 11, the diameter and high proportion are 1:1, the size of its volume is designed appropriately, can reduce the residual amount after the solution derives and guarantee to collect the residual liquid after the discharge fully;
the lower end enclosure 14 is in a semi-elliptical shape and is designed according to GB/T25198-;
2 lifting lugs are welded on the cylinder body 11, are positioned above 1.5 meters of the gravity center of the whole metering tank and are used for transporting and mounting the metering tank;
the cylinder body 11 is provided with 4 adjustable supports 12 for adjusting the verticality of the measuring tank after installation;
the upper end enclosure 10 is flat-bottom, and the upper part of the upper end enclosure is welded with an air blowing measuring pipe 2, an air blowing measuring pipe B3, a sampling pipe 4, a discharging pipe 5, a liquid level limiting siphon 6, a thermometer sleeve 7, a feeding pipe 8 and a drainage pipe; the tolerance of the parallelism of the central line of each connecting pipe and the central axis of the cylinder body needs to be ensured within a certain range;
the air blowing measuring tube 2 and the air blowing measuring tube B3 are key measuring components for acquiring solution characteristic data, and the air blowing measuring tube 2 and the air blowing measuring tube B3 are designed to ensure that the installation is vertical, no bending exists, the fixation is firm, the side wall of the measuring tank and the bottom of the measuring tank are not contacted, and the proper distance between the side wall of the measuring tank and the bottom of the measuring tank is ensured; the measuring tank is provided with four sets of blowing measuring tubes, wherein one set is used for responding and measuring the liquid level pressure, and the other set is used for measuring, comparing and checking the density on line.
The thermometer sleeve 7 is provided with a platinum thermal resistor for measuring the temperatures of different liquid level layers of the metering tank, and the position of the thermometer sleeve 7 extending into the metering tank is reasonably arranged to ensure that the acquired solution temperature data is representative. The utility model designs three thermometer measuring element temperature sleeves on the layout of the measuring elements of the measuring tank, the three temperature sleeves are distributed at the upper, middle and lower positions of the measuring tank and are used for measuring the temperature in real time;
three liquid level siphon limiting pipes 6 are arranged in the vacuum siphon type metering tank, and the volume of the measured volume of the metering tank is fixed in a vacuum siphon mode;
three sampling tubes 4 are arranged in the utility model so as to sample and analyze the uranium and plutonium element concentration and the feed liquid density in the feed liquid;
the feed pipe 8 and the discharge pipe 5 are used for transferring and transferring feed liquid;
the utility model is provided with the calandria for ensuring the pressure balance inside the metering tank;
the manhole is welded on the upper end enclosure 10 of the metering tank, is used for realizing the acceptance of the internal structure size of the metering tank, and is reasonably distributed at the upper end enclosure so as not to interfere with other pipelines;
as shown in figure 2, the manhole comprises a flat cover 26, the flat cover 26 is arranged on the cylinder body 11 through a buckle 22, a bolt and a nut 23 and a flange 27, and a handle 25 is arranged on the flat cover 26
Feed liquid cooling device is the shell and tube type, installs in the metering tank inside, and its heat-transfer surface is served by the coiled pipe that bends into columniform, can prevent that solution decay heat accumulation from leading to the risk of high temperature.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. The utility model provides a metering tank suitable for commercial aftertreatment factory 1AF feed liquid precision measurement which characterized in that: the device comprises an upper end enclosure (10), a lower end enclosure (14) and a cylinder body (11), wherein the lower end of the cylinder body (11) is provided with the lower end enclosure (14), and the middle part of the lower end enclosure (14) is provided with a metering groove consisting of a concave hydrops pit (15);
the upper end enclosure (10) is of a flat bottom type, and the upper portion of the upper end enclosure is welded with a blowing measuring pipe (2), a blowing measuring pipe B (3), a sampling pipe (4), a discharging pipe (5), a liquid level limiting siphon (6), a thermometer sleeve (7), a feeding pipe (8) and a calling pipe.
2. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the concave liquid accumulation pit (15) is cylindrical and concentric with the cylinder body (11).
3. The metering tank suitable for the accurate metering of 1AF feed liquid in a commercial post-treatment plant according to claim 2, characterized in that: the ratio of the diameter to the height of the concave liquid accumulation pit (15) is 1: 1.
4. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the lower end enclosure (14) is semi-elliptical and is designed according to GB/T25198-.
5. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: 2 lifting lugs are welded on the cylinder body (11).
6. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the cylinder body (11) is provided with 4 adjustable supports (12).
7. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the thermometer sleeve (7) is provided with a platinum thermal resistor.
8. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the liquid level limiting siphon pipes (6) are three in number.
9. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the number of the sampling tubes (4) is three.
10. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the manhole is welded on the upper end socket (10) of the metering tank.
11. The metering tank of claim 10, wherein the metering tank is adapted for accurate metering of a commercial post-treatment plant 1AF feed liquid, and comprises: the manhole comprises a flat cover (26), the flat cover (26) is installed on the barrel body (11) through a buckle (22), a bolt nut (23) and a flange (27), and a handle (25) is installed on the flat cover (26).
12. The metering tank of claim 1 for accurate metering of commercial post-processing plant 1AF feed liquid, wherein: the device also comprises a material liquid cooling device which is a shell-and-tube type and is arranged inside the metering tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122155197.4U CN216559186U (en) | 2022-03-02 | 2022-03-02 | Metering tank suitable for accurate measurement of 1AF feed liquid in commercial aftertreatment factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122155197.4U CN216559186U (en) | 2022-03-02 | 2022-03-02 | Metering tank suitable for accurate measurement of 1AF feed liquid in commercial aftertreatment factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216559186U true CN216559186U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122155197.4U Active CN216559186U (en) | 2022-03-02 | 2022-03-02 | Metering tank suitable for accurate measurement of 1AF feed liquid in commercial aftertreatment factory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216559186U (en) |
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2022
- 2022-03-02 CN CN202122155197.4U patent/CN216559186U/en active Active
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