CN105372283A - Device for on-line measurement of soluble impurities in sodium - Google Patents
Device for on-line measurement of soluble impurities in sodium Download PDFInfo
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- CN105372283A CN105372283A CN201510881566.4A CN201510881566A CN105372283A CN 105372283 A CN105372283 A CN 105372283A CN 201510881566 A CN201510881566 A CN 201510881566A CN 105372283 A CN105372283 A CN 105372283A
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- heat exchanger
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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Abstract
The present invention relates to a device for material analysis. In order to solve the low reliability and low accuracy of a soluble impurity concentration analyzer in low sodium loop in the prior art, the invention provides a device for on-line measurement of soluble impurities in sodium. The device comprises a filter, an overflow valve, a heat exchanger, a flow meter, and a cooling blower. The heat exchanger has a sleeve tube structure; the part of an inner tube extending outside an outer tube forms a heat exchanger outlet; the outer wall of the outer tube at the outlet end of the heat exchanger is provided with a heat exchanger inlet; a closed end away from the outlet of the heat exchanger is a cooling end; and the cooling end is provided a temperature measuring device. The device for on-line measurement of soluble impurities in sodium has the advantages of stable and reliable working process, no clogging, high reliability, high analysis speed and easy operation, avoids the errors and sample waste caused by off-line sampling, and timely and accurately obtains the concentration of soluble impurities in the sodium loop.
Description
Technical field
The present invention relates to a kind of device for material analysis, particularly the device of soluble impurity in a kind of on-line measurement sodium.
Background technology
In the loops such as fast neutron reactor sodium loop, sodium experimental circuit, in order to security of operation or reach particular experiment object, know that the concentration of soluble impurity in sodium is very important.
At present, appropriate authority is openly very few to the analytical approach of soluble impurity concentration in sodium loop in the world, the analytical equipment that shorter mention adopts, and is difficult to the effective technology scheme that formation can be for reference.
And the analytical approach of soluble impurity concentration mainly relies on off-line sampling mode to analyze one by one institute's sample thief in domestic sodium loop.Because comparatively multiple error is easily introduced in off-line sampling itself, and at least two days consuming time, therefore far can not meet the analysis needs of soluble impurity concentration in sodium loop.
In addition, Hong Shunzhang etc. developed a kind of automatic plugging meter (see Hong Shunzhang, Zhang Zhong etc., " measuring the development of the automatic plugging meter of impurity in sodium ", atomic energy science and technology, 1994,28 (1): 62-67.), this automatic plugging meter adopts " center rod-type " structure, can realize the on-line analysis of soluble impurity concentration in sodium loop.Its main operational principle is: when measuring, blocks central aperture, allows sodium flow through 4 apertures; Open center pit when not measuring, make sodium flow through center pit, its shortcoming is containing moving machinery parts, and easily block, reliability is low, simultaneously its instability of flow, and accuracy of measurement is not high.
Summary of the invention
For solving the problems such as the reliability that in existing sodium loop, soluble impurity concentration analysis device exists is low, accuracy is not high, the invention provides the device of soluble impurity in a kind of on-line measurement sodium.
This device comprises filtrator, surplus valve, heat interchanger, flowmeter and cooling blower; The entrance of described filtrator is connected with sampling line, and the outlet of filtrator is connected with the entrance of heat interchanger, the entrance of surplus valve respectively by pipeline; The outlet of described heat interchanger is connected with the entrance of flowmeter by pipeline; The outlet of described flowmeter is connected with return line; The outlet of described surplus valve is connected with return line; Described heat interchanger is sleeve type structure, its outer tube closed at both ends, interior pipe stretches into outer tube by outer tube one blind end opening part and does not contact with another blind end of outer tube, interior pipe and outer tube junction adopt and are tightly connected, the part that interior pipe stretches out outside pipe forms heat exchanger exit, and the outer tube outer wall of heat exchanger exit end is provided with heat exchanger entrance; The blind end that heat interchanger exports away from it is colling end, and this colling end is provided with temperature measuring equipment.
It is preferred that the exit of described filtrator is provided with mass flow meters.
It is preferred that the outer wall of described colling end is provided with cooling fins.
Described temperature measuring equipment is preferably thermopair.
The present invention, by the mode cooled the liquid sodium stream of being drawn by sodium pipeline, utilizes the soluble impurity in liquid sodium (mainly to comprise Na
2o and NaH etc.) be easy to when lower temperature separate out feature, it is made to separate out in privileged site cooling, the flowing path section at this position is reduced and forms obstruction, reduce the flow of this stream, and when flow reduces, the temperature of this privileged site can reflect the soluble impurity total content in fluid sodium.Soluble impurity total content in liquid sodium also can adopt comprehensive soluble impurity (in oxygen content) to represent, concrete data calculate can adopt following formula (1).
lgc＝6.2571-2444.5/T(1)
Wherein: c is comprehensive soluble impurity content (in oxygen content), and unit is 10
-6g/g; T is temperature when soluble impurity begins to cool down precipitation in sodium, and unit is K.
In on-line measurement sodium of the present invention, first soluble impurity device filters the solid granular impurity that may exist in sodium with filtrator, avoids impact to measure; Surplus valve can guarantee the sodium constant flow entering heat interchanger, ensure that stablizing in the equipment course of work; The flowmeter of heat exchanger exit is for detecting the change of sodium flow; Heat interchanger is used for the cooling of sodium stream, and the heat exchange between the hot sodium entered and the cold sodium left; Thermopair is used for the measurement of sodium temperature; Blower fan is used for the cooling of heat interchanger colling end.
In sum, in on-line measurement sodium of the present invention, soluble impurity device can realize the on-line analysis of soluble impurity concentration in sodium loop preferably.Owing to not adopting movable member, therefore the course of work is reliable and stable, not easily blocks, and has very high reliability.The on-line analysis mode analysis speed adopted is fast, measuring overall process can be controlled in 0.5 hour, simple operation, avoid off-line and sample the error and sample waste brought, in time, accurately can obtain the soluble impurity concentration in sodium loop, the operation for sodium loop provides real-time data reference.
Accompanying drawing explanation
Soluble impurity device schematic diagram in Fig. 1 on-line measurement sodium of the present invention.
Soluble impurity device heat interchanger sectional view in Fig. 2 on-line measurement sodium of the present invention.
Reference numeral: 1. filtrator, 2. mass flow meters, 3. surplus valve, 4. flowmeter, 5. heat interchanger, 6. cooling fins, 7. thermopair, 8. cooling blower, 9. heat exchanger entrance, 10. heat exchanger exit, 11. outer tubes, pipe in 12..
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1
As shown in accompanying drawing 1-2, in on-line measurement sodium of the present invention, the device of soluble impurity comprises filtrator, surplus valve, heat interchanger, flowmeter and cooling blower; The entrance of described filtrator is connected with sampling line, and the outlet of filtrator is connected with the entrance of heat interchanger, the entrance of surplus valve respectively by pipeline; The outlet of described heat interchanger is connected with the entrance of flowmeter by pipeline; The outlet of described flowmeter is connected with return line; The outlet of described surplus valve is connected with return line; Described heat interchanger is sleeve type structure, its outer tube closed at both ends, interior pipe stretches into outer tube by outer tube one blind end opening part and does not contact with another blind end of outer tube, interior pipe and outer tube junction adopt and are tightly connected, the part that interior pipe stretches out outside pipe forms heat exchanger exit, and the outer tube outer wall of heat exchanger exit end is provided with heat exchanger entrance; The blind end that heat interchanger exports away from it is colling end, and this colling end is provided with temperature measuring equipment.
The exit of described filtrator can also be provided with mass flow meters; The outer wall of described colling end can be provided with cooling fins; Described temperature measuring equipment can select thermopair.
Embodiment 2
By the application of installation of soluble impurity in on-line measurement sodium of the present invention in the analysis of the soluble impurity concentration of certain sodium loop, its main process is as follows:
(1) preheating is carried out to whole device, after making its temperature rise to about 200 DEG C, keep constant temperature.
(2) introduce sodium stream to be analyzed by sampling line, and to make by the sodium flow of mass flow meters be 0.5-1m
3/ h.
(3) start cooling blower heat exchanger colling end to cool, its temperature is slowly steadily declined; When the flow value of flowmeter starts to decline (for ease of reading data, this is selected and drops to 98% of original flow), the temperature value of record temperature measuring equipment, and close blower fan.
(4) this temperature value is substituted into formula (1), calculate the comprehensive soluble impurity content in fluid sodium.
Practical application shows: in on-line measurement sodium of the present invention, the soluble impurity device course of work is reliable and stable, and analysis speed is fast, and simple operation, gained measurement result is comparatively accurate.
Claims (4)
1. the device of soluble impurity in on-line measurement sodium, is characterized in that: this device comprises filtrator, surplus valve, heat interchanger, flowmeter and cooling blower; The entrance of described filtrator is connected with sampling line, and the outlet of filtrator is connected with the entrance of heat interchanger, the entrance of surplus valve respectively by pipeline; The outlet of described heat interchanger is connected with the entrance of flowmeter by pipeline; The outlet of described flowmeter is connected with return line; The outlet of described surplus valve is connected with return line; Described heat interchanger is sleeve type structure, its outer tube closed at both ends, interior pipe stretches into outer tube by outer tube one blind end opening part and does not contact with another blind end of outer tube, interior pipe and outer tube junction adopt and are tightly connected, the part that interior pipe stretches out outside pipe forms heat exchanger exit, and the outer tube outer wall of heat exchanger exit end is provided with heat exchanger entrance; The blind end that heat interchanger exports away from it is colling end, and this colling end is provided with temperature measuring equipment.
2. the device of soluble impurity in on-line measurement sodium as claimed in claim 1, is characterized in that: the exit of described filtrator is provided with mass flow meters.
3. the device of soluble impurity in on-line measurement sodium as claimed in claim 1, is characterized in that: the outer wall of described colling end is provided with cooling fins.
4. the device of soluble impurity in on-line measurement sodium as claimed in claim 1, is characterized in that: described temperature measuring equipment is thermopair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881566.4A CN105372283A (en) | 2015-12-03 | 2015-12-03 | Device for on-line measurement of soluble impurities in sodium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881566.4A CN105372283A (en) | 2015-12-03 | 2015-12-03 | Device for on-line measurement of soluble impurities in sodium |
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| Publication Number | Publication Date |
|---|---|
| CN105372283A true CN105372283A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510881566.4A Pending CN105372283A (en) | 2015-12-03 | 2015-12-03 | Device for on-line measurement of soluble impurities in sodium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707703A (en) * | 2020-04-30 | 2020-09-25 | 中国原子能科学研究院 | Structure of blockage meter capable of rapidly relieving blockage and blockage meter applying same |
| CN112763369A (en) * | 2020-12-31 | 2021-05-07 | 中国原子能科学研究院 | Experimental device for impurity heterogeneous crystallization in sodium |
| CN115452886A (en) * | 2022-09-16 | 2022-12-09 | 中国核动力研究设计院 | Monitoring device and monitoring method for content of soluble impurities in solution |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3343401A (en) * | 1963-06-14 | 1967-09-26 | Commissariat Energie Atomique | Method and apparatus for continuously measuring liquid metal oxide saturation temperatures |
| US4010068A (en) * | 1972-09-28 | 1977-03-01 | Westinghouse Electric Corporation | Removal of radioactive contamination from a nuclear reactor coolant |
| US4178795A (en) * | 1976-09-22 | 1979-12-18 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Plugging meter |
| US4274280A (en) * | 1978-10-02 | 1981-06-23 | Tokyo Shibaura Denki Kabushiki Kaisha | Plugging indicator |
| US4297873A (en) * | 1978-06-13 | 1981-11-03 | Tokyo Shibaura Denki Kabushiki Kaisha | Plugging device |
| CN104482785A (en) * | 2014-12-11 | 2015-04-01 | 山东大学 | Detachable heat exchange sleeve |
| CN205210000U (en) * | 2015-12-03 | 2016-05-04 | 中国原子能科学研究院 | Device of soluble impurity in on line measurement sodium |
-
2015
- 2015-12-03 CN CN201510881566.4A patent/CN105372283A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3343401A (en) * | 1963-06-14 | 1967-09-26 | Commissariat Energie Atomique | Method and apparatus for continuously measuring liquid metal oxide saturation temperatures |
| US4010068A (en) * | 1972-09-28 | 1977-03-01 | Westinghouse Electric Corporation | Removal of radioactive contamination from a nuclear reactor coolant |
| US4178795A (en) * | 1976-09-22 | 1979-12-18 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Plugging meter |
| US4297873A (en) * | 1978-06-13 | 1981-11-03 | Tokyo Shibaura Denki Kabushiki Kaisha | Plugging device |
| US4274280A (en) * | 1978-10-02 | 1981-06-23 | Tokyo Shibaura Denki Kabushiki Kaisha | Plugging indicator |
| CN104482785A (en) * | 2014-12-11 | 2015-04-01 | 山东大学 | Detachable heat exchange sleeve |
| CN205210000U (en) * | 2015-12-03 | 2016-05-04 | 中国原子能科学研究院 | Device of soluble impurity in on line measurement sodium |
Non-Patent Citations (1)
| Title |
|---|
| 洪顺章 等: "测定钠中杂质的手动阻塞计的研究", 《原子能科学技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707703A (en) * | 2020-04-30 | 2020-09-25 | 中国原子能科学研究院 | Structure of blockage meter capable of rapidly relieving blockage and blockage meter applying same |
| CN112763369A (en) * | 2020-12-31 | 2021-05-07 | 中国原子能科学研究院 | Experimental device for impurity heterogeneous crystallization in sodium |
| CN115452886A (en) * | 2022-09-16 | 2022-12-09 | 中国核动力研究设计院 | Monitoring device and monitoring method for content of soluble impurities in solution |
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