CN204573147U - A kind of heavy caliber sodium valves for sodium-cooled fast reactor - Google Patents
A kind of heavy caliber sodium valves for sodium-cooled fast reactor Download PDFInfo
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- CN204573147U CN204573147U CN201520012494.5U CN201520012494U CN204573147U CN 204573147 U CN204573147 U CN 204573147U CN 201520012494 U CN201520012494 U CN 201520012494U CN 204573147 U CN204573147 U CN 204573147U
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Abstract
The utility model belongs to fast reactor field of engineering technology, discloses a kind of heavy caliber sodium valves for sodium-cooled fast reactor.This sodium valves comprises valve rod, valve-rod cavity, radiating fin, valve gap, valve body, flashboard, flashboard chamber and valve seat, it is characterized in that, wherein valve rod is positioned at the valve body of valve-rod cavity and valve-rod cavity bottom, and leaves the gap of 1mm ~ 6mm between valve rod and valve-rod cavity, and valve-rod cavity and valve body are through structure; The lower end of valve rod is provided with flashboard, and flashboard is positioned at flashboard chamber, and valve rod drives flashboard to move up and down the keying realizing valve; The top of valve-rod cavity is provided with argon gas and is filled with mouth and the pressure transducer for measuring argon pressure, and middle part is provided with radiating fin, and wherein argon gas is filled with mouth and is connected with flow pump and argon bottle.This sodium valves has effectively can monitor heavy caliber sodium valves motive sealing effect and can the advantage of Fast Reconstruction motive sealing state.
Description
Technical field
The utility model belongs to fast reactor field of engineering technology, is specifically related to a kind of heavy caliber sodium valves for sodium-cooled fast reactor.
Background technique
The feature of fast reactor sodium system is high-temperature low-pressure, intrasystem sodium is extremely active, run into air meeting rapid oxidation, run into water meeting vigorous combustion, so do not allow the leakage of trace for any type of sodium valves, especially by the dielectric leakage (namely leaking outside) in gap between valve gap and valve rod, the normal operation of pipeline and equipment can be had a strong impact on, particularly to active medium, leakage can cause radioactive pollution, threatens to personal safety." motive sealing " of so-called valve refers to sealing configuration for preventing valve rod place from leaking or method.Fast reactor heavy caliber sodium valves is generally the front and back being arranged on steam generator module as closedown structure; when there is sodium-water reaction accident; steam generator can be isolated rapidly, avoid the further expansion of accident, the safe operation of protection steam generator and secondary circuit.
Heavy caliber sodium valves for fast reactor disclosed in current document has packing seal, sylphon seal and freezing sealing three kinds of modes, wherein there are two kinds of defects in existing freezing sealing technique: (1) effectively can not judge that sodium that sodium solidifies formation is admittedly filled in envelope and whether is destroyed, although have document to disclose sodium can be adopted admittedly to fill in the argon pressure sealing up end to judge whether solid plug envelope is destroyed, but what it utilized being argon gas residual in fast reactor pipeline and argon gas that non-quantitation is filled with, the content of argon gas is uncertain, on each sodium valves, the pressure of argon gas is different, therefore monitoring is got up very difficult, (2) in sodium loop, the sodium forming solid plug envelope may form Na by the impact of other impurity
2o crystallization, causes valve rod normally not move up and down, and the structure provided in open source literature can not head it off quickly and efficiently.
Model utility content
(1) model utility object
Problem existing for prior art, the utility model provides a kind ofly effectively can monitor heavy caliber sodium valves motive sealing effect and can the heavy caliber sodium valves of Fast Reconstruction motive sealing state.
(2) technological scheme
In order to solve the problem existing for prior art, the utility model is achieved through the following technical solutions:
A kind of heavy caliber sodium valves for sodium-cooled fast reactor, this device comprises valve rod, valve-rod cavity, radiating fin, valve gap, valve body, flashboard, flashboard chamber and valve seat, wherein valve rod is positioned at the valve body of valve-rod cavity and valve-rod cavity bottom, and between valve rod and valve-rod cavity, leaving the gap of 1mm ~ 6mm, valve-rod cavity and valve body are through structure; The lower end of valve rod is provided with flashboard, and flashboard is positioned at flashboard chamber, and valve rod drives flashboard to move up and down the keying realizing valve; The top of valve-rod cavity is provided with argon gas and is filled with mouth and the pressure transducer for measuring argon pressure, middle part is provided with radiating fin, wherein argon gas is filled with mouth and is connected with flow pump and argon bottle, realize quantitatively being filled with of argon gas, the temperature that radiating fin realizes sodium in valve rod and valve-rod cavity gap is reduced to less than 98 DEG C.
Preferably, described valve rod upper end is provided with Stuffing box and seal ring.
Preferably, the top of described valve body is provided with valve gap.
Preferably, described diffusion sheet is provided with heating equipment.
(3) beneficial effect
Adopt the heavy caliber sodium valves for sodium-cooled fast reactor that the application provides, this sodium valves is by arranging radiating fin at the middle part of valve rod chamber, make the temperature of sodium in valve rod and valve-rod cavity gap be reduced to less than 98 DEG C, form sodium and admittedly fill in envelope, thus realize the sealing of valve to Liquid Sodium in sodium channel.The beneficial effect of the application is also:
(1) the sodium valves quantity in sodium-cooled fast reactor sodium loop is more, the argon gas that the upper end that traditional heavy caliber sodium valves sodium fills in envelope is admittedly arranged is passive being filled with, because the air that sodium-cooled fast reactor sodium channel first utilized argon purge pipeline residual before injecting sodium, then sodium is injected, inject the process of sodium, each sodium valves place can remain some argon gas, and these argon gas can be used for monitoring the sealing effect that sodium fills in envelope admittedly, but because each valve place argon content is inconsistent, monitoring is got up more difficult.Being filled with mouth by arranging argon gas, can realizing quantitatively being filled with argon gas to valve place, make the argon content at each valve place consistent, be convenient to monitoring.
(2) formed sodium admittedly fill in envelope sodium may by other impurity impact formed Na
2o crystallization, due to the gap little (1 ~ 6mm) of valve rod and valve-rod cavity, crystallization may cause valve rod normally not move up and down, and the heating equipment on the radiating fin utilizing the application to provide allows the sodium and Na that solidify
2o crystallization is again in flowing state and enters sodium channel, then closes heating equipment and makes sodium again be frozen into sodium admittedly to fill in envelope, namely complete the reconstruction of motive sealing state.Simultaneously in order to complete the reconstruction of motive sealing state fast, the argon gas that can also be provided by the application is filled with the sodium that mouth is filled with argon purge flowing state in valve-rod cavity, makes it enter sodium channel.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heavy caliber sodium valves that the utility model provides, and wherein 1 is that argon gas is filled with mouth; 2 is argon gas; 3 is radiating fin; 4 is that sodium fills in envelope admittedly; 6 is Liquid Sodium; 7 is pressure transducers; 8 is Stuffing boxes; 9 is valve gaps; 10 is valve bodies; 11 is flashboard chambeies; 12 is valve-rod cavities; 13 is valve rods; 14 is flashboards.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the utility model is further elaborated.
Embodiment 1
A kind of heavy caliber sodium valves for sodium-cooled fast reactor, this device comprises valve rod 13, valve-rod cavity 12, radiating fin 3, valve gap 9, valve body 10, flashboard 14, flashboard chamber 11 and valve seat, wherein valve rod 13 is positioned at the valve body 10 of valve-rod cavity 12 and valve-rod cavity 12 bottom, and between valve rod 13 and valve-rod cavity 12, leaving the gap of 1mm, valve-rod cavity 12 and valve body 10 are through structure; The lower end of valve rod 13 is provided with flashboard 14, and flashboard 14 is positioned at flashboard chamber 11, and valve rod 13 drives flashboard 14 to move up and down the keying realizing valve; The top of valve-rod cavity 12 is provided with argon gas and is filled with mouth 1 and the pressure transducer for measuring argon pressure, middle part is provided with radiating fin 3, wherein argon gas is filled with mouth 1 and is connected with flow pump and argon bottle, realize quantitatively being filled with of argon gas, radiating fin realizes valve rod 13 and is reduced to less than 98 DEG C with the temperature of sodium in valve-rod cavity 12 gap.Described valve rod 13 upper end is provided with Stuffing box 8 and seal ring.The top of described valve body 10 is provided with valve gap 9.Described diffusion sheet 3 is provided with heating equipment.
The sodium valves that the application provides has been successfully applied on the sodium loop of Experiment Fast Reactor, and valve types is the sodium gate valve of DN300, and design pressure is 2.5MPa, and design temperature is 550 DEG C.The design of this sodium valves can increase the reliability of heavy caliber sodium valves, also reduces the requirement to sodium valves overall structure height simultaneously.
Embodiment 2
As different from Example 1, the gap between valve rod and valve-rod cavity is 6mm.
Claims (4)
1. the heavy caliber sodium valves for sodium-cooled fast reactor, this sodium valves comprises valve rod, valve-rod cavity, radiating fin, valve gap, valve body, flashboard, flashboard chamber and valve seat, it is characterized in that, valve rod is positioned at the valve body of valve-rod cavity and valve-rod cavity bottom, and between valve rod and valve-rod cavity, leaving the gap of 1mm ~ 6mm, valve-rod cavity and valve body are through structure; The lower end of valve rod is provided with flashboard, and flashboard is positioned at flashboard chamber, and valve rod drives flashboard to move up and down the keying realizing valve; The top of valve-rod cavity is provided with argon gas and is filled with mouth and the pressure transducer for measuring argon pressure, and middle part is provided with radiating fin, and wherein argon gas is filled with mouth and is connected with flow pump and argon bottle.
2., according to a kind of heavy caliber sodium valves for sodium-cooled fast reactor that claim 1 provides, it is characterized in that, described valve rod upper end is provided with Stuffing box and seal ring.
3., according to a kind of heavy caliber sodium valves for sodium-cooled fast reactor that claim 1 provides, it is characterized in that, the top of described valve body is provided with valve gap.
4., according to a kind of heavy caliber sodium valves for sodium-cooled fast reactor that claim 1 provides, it is characterized in that, described radiating fin is provided with heating equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012494.5U CN204573147U (en) | 2015-01-08 | 2015-01-08 | A kind of heavy caliber sodium valves for sodium-cooled fast reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012494.5U CN204573147U (en) | 2015-01-08 | 2015-01-08 | A kind of heavy caliber sodium valves for sodium-cooled fast reactor |
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| CN204573147U true CN204573147U (en) | 2015-08-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990007A (en) * | 2017-12-07 | 2018-05-04 | 吉林省松原石油化工股份有限公司 | Fluidization up flow type multiple reactor is connected and the downflow system plug valve of regeneration technology |
| CN109686468A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of sylphon seal injection device for sodium-cooled fast reactor |
| CN109681683A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of flexible graphite sealing injection device for sodium-cooled fast reactor |
| CN109764156A (en) * | 2019-02-14 | 2019-05-17 | 江苏中海华核环保有限公司 | A kind of secondary sodium circulation pump test device sodium valves |
| CN109899579A (en) * | 2019-04-02 | 2019-06-18 | 中国原子能科学研究院 | A kind of support device for fast reactor sodium valves |
-
2015
- 2015-01-08 CN CN201520012494.5U patent/CN204573147U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990007A (en) * | 2017-12-07 | 2018-05-04 | 吉林省松原石油化工股份有限公司 | Fluidization up flow type multiple reactor is connected and the downflow system plug valve of regeneration technology |
| CN109686468A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of sylphon seal injection device for sodium-cooled fast reactor |
| CN109681683A (en) * | 2019-01-09 | 2019-04-26 | 中国原子能科学研究院 | A kind of flexible graphite sealing injection device for sodium-cooled fast reactor |
| CN109681683B (en) * | 2019-01-09 | 2023-09-29 | 中国原子能科学研究院 | Flexible graphite sealing injection device for sodium-cooled fast reactor |
| CN109686468B (en) * | 2019-01-09 | 2024-02-20 | 中国原子能科学研究院 | Bellows sealing injection device for sodium-cooled fast reactor |
| CN109764156A (en) * | 2019-02-14 | 2019-05-17 | 江苏中海华核环保有限公司 | A kind of secondary sodium circulation pump test device sodium valves |
| CN109764156B (en) * | 2019-02-14 | 2019-10-11 | 江苏中海华核环保有限公司 | A kind of secondary sodium circulation pump test device sodium valves |
| CN109899579A (en) * | 2019-04-02 | 2019-06-18 | 中国原子能科学研究院 | A kind of support device for fast reactor sodium valves |
| CN109899579B (en) * | 2019-04-02 | 2020-10-09 | 中国原子能科学研究院 | Supporting device for fast reactor sodium valve |
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