CN209604617U - A kind of flexible graphite sealing injection device for sodium-cooled fast reactor - Google Patents
A kind of flexible graphite sealing injection device for sodium-cooled fast reactor Download PDFInfo
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- CN209604617U CN209604617U CN201920036798.3U CN201920036798U CN209604617U CN 209604617 U CN209604617 U CN 209604617U CN 201920036798 U CN201920036798 U CN 201920036798U CN 209604617 U CN209604617 U CN 209604617U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model belongs to sodium-cooled fast reactor hydrogen injection technical field, more particularly to a kind of flexible graphite sealing injection device for sodium-cooled fast reactor, regulation handle is equipped with including top, side is equipped with the flow control valve of air inlet pipe, flow control valve bottom end connects check-valves by middle adapter, the bottom end of check-valves is equipped with vent connection, regulation handle is connected with the flow control valve valve rod in flow control valve, the lifting of flow control valve valve rod is driven to pass through flow control valve to from air inlet pipe to realize under the control of regulation handle, middle adapter and check-valves enter the control of the gas flow of vent connection, flow control valve valve rod is threaded through in flow control valve stuffing nut and the first seal washer, the extraneous sealing to flow control valve valve rod and flow control valve is realized by the first seal washer.The injection device have the advantages that easy to operate, high reliablity, processing and maintenance cost it is low, for ease of maintenaince and replacement.
Description
Technical field
The utility model belongs to sodium-cooled fast reactor hydrogen injection technical field, and in particular to a kind of flexibility for sodium-cooled fast reactor
Graphite grazing injection device.
Background technique
Steam generator accident protection system is a set of important safety that the cold fast breeder of sodium must be provided with
System, corresponding different sodium-cooled fast reactor scale, can be divided into single module steam generator and multimode steam generator, the protection
The basic principle of system is all identical, and the superpressure for being provided to prevent sodium-water reaction generation causes secondary circuit equipment and pipeline
Safety.
In order to guarantee the safe operation of multimode steam generator, multimode steam generator sodium-water reaction accident need to be carried out
The Sodium Water Reaction Test equipment research and development in system design validation project are protected, so that it is small to obtain multimode steam generator heat exchange tube
The relationship of the parameters such as leakage quantity, temperature and pressure of water when leakage and gross leak.Therefore it needs to design a kind of for sodium-water reaction examination
Injection hydrogen/argon gas equipment into testing equipment is tested, to simulate Small leak sodium-water reaction.
Utility model content
The purpose that the utility model is created is, for the note hydrogen experimental design of sodium-cooled fast reactor steam generator accident protection system
A set of adjustable note hydrogen/argon gas injection device of flow completes the online of hydrogen meter by note hydrogen/argon gas test of different flow
Calibration sets accurate alarm threshold value for sodium-cooled fast reactor Small leak, to provide reliable Small leak alarm signal for sodium-cooled fast reactor
Number, trigger related protection and quarantine measures.
To achieve the above objectives, the technical solution adopted in the utility model is that a kind of soft graphite for sodium-cooled fast reactor is close
Injection device is sealed, for injecting hydrogen and/or argon gas into testing equipment in note hydrogen test, wherein be equipped with and adjust including top
The flow control valve of handle, side equipped with air inlet pipe is saved, the flow control valve bottom end passes through middle adapter and connects check-valves, institute
The bottom end for stating check-valves is equipped with vent connection, the regulation handle and the flow control valve valve rod phase in the flow control valve
Even, the lifting of the flow control valve valve rod is driven to pass through to realize to from the air inlet pipe under the control of the regulation handle
Cross the control that the flow control valve, the middle adapter and the check-valves enter the gas flow of the vent connection, institute
It states flow control valve valve rod to be threaded through in flow control valve stuffing nut and the first seal washer, passes through first seal washer
Realize the extraneous sealing to the flow control valve valve rod and the flow control valve.
Further, flow control valve stuffing box, the flow are equipped in the flow control valve body of the flow control valve
Control valve valve rod is passed through out of described flow control valve stuffing box, if first seal washer is dry plate, with coaxial manner layer
It is folded to be arranged in the flow control valve stuffing box.
Further, the part that the bottom end of the flow control valve stuffing box is in contact with the flow control valve body uses
Second seal washer realizes sealing.
Further, the regulation handle is connected by scale inside and outside sleeve with the flow control valve valve rod；The scale
The inner sleeve range of inside and outside sleeve is 14mm, is equipped with 14 scales；The outer sleeve even circumferential of the scale inside and outside sleeve
Equipped with 10 scales；The flow control valve can set the gas under 140 different openings by the scale inside and outside sleeve
Flow.
Further, the check-valves includes check-valves stuffing box and check valve body, and the check-valves stuffing box setting exists
In the check valve body, the top of the check-valves stuffing box is connected to the bottom end of the middle adapter, the vent connection
The bottom end of the check valve body is set.
Further, the part that the bottom end of the check-valves stuffing box is in contact with the check valve body is sealed using third
Washer realizes sealing.
Further, the material of second seal washer and the third seal washer is 316 high mesh soft graphites of folder.
Further, the material of first seal washer is soft graphite.
Further, the length of the vent connection can ensure to be transmitted in injection manipulation from the testing equipment
The temperature of the check-valves is no more than the design temperature of the check-valves.
Further, between the flow control valve and the air inlet pipe, the flow control valve and the middle adapter it
Between, welded seal company is all made of between the middle adapter and the check-valves, between the check-valves and the vent connection
It connects.
The utility model has the beneficial effects that:
1. the note hydrogen test for sodium-cooled fast reactor steam generator accident protection system provides a set of flow adjustable injection
Device.
2. easy to operate, high reliablity, processing is low with maintenance cost, for ease of maintenaince and replaces.
3. injection device carries out helium leak test, leakage rate is less than 10-7Pa.m3/s。
4. the material of the first seal washer 7 is soft graphite, which is unlikely to deform crisp under high temperature, high radiation environment
It splits, can keep good sealing effectiveness, and low in cost.
Detailed description of the invention
Fig. 1 is a kind of flexible graphite sealing injection for sodium-cooled fast reactor described in specific embodiment of the present invention
The schematic diagram of device；
Fig. 2 is the schematic diagram of flow control valve described in specific embodiment of the present invention；
Fig. 3 is the schematic diagram of check-valves described in specific embodiment of the present invention；
In figure: 1- regulation handle, 2- flow control valve, 3- flow control valve stuffing box, 4- air inlet pipe, 5- scale inner-outer sleeve
Cylinder, 6- flow control valve valve rod, the first seal washer of 7-, 8- flow control valve body, the second seal washer of 9-, 10- check-valves,
11- check valve body, 12- third seal washer, 13- check-valves stuffing box, 14- vent connection, 15- middle adapter, 16- flow
Control valve stuffing nut.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of flexible graphite sealing injection device for sodium-cooled fast reactor provided by the utility model, is used for
Into testing equipment, constant flow injects hydrogen and/or argon gas under note hydrogen test operation operating condition.The top of injection device is flow control
Valve 2 processed injects constant flow hydrogen/argon gas to testing equipment in the case where setting pressure using scale inside and outside sleeve 5, under injection device
Portion is check-valves 10, for preventing the Sodium vapour in testing equipment (such as sodium-water reaction device) from entering injection device.
As shown in Figure 1 and Figure 2, the top of flow control valve 2 is equipped with regulation handle 1, side is equipped with air inlet pipe 4, flow control
The bottom end of valve 2 is connected by middle adapter 15 with check-valves 10.
Regulation handle 1 is connected with the flow control valve valve rod 6 in flow control valve 2, drives under the control of regulation handle 1
The lifting of flow control valve valve rod 6 passes through flow control valve 2, middle adapter 15 and check-valves 10 to from air inlet pipe 4 to realize
Into the control of the gas flow of vent connection 14, flow control valve valve rod 6 is threaded through flow control valve stuffing nut 16 and
In one seal washer 7, the extraneous sealing to flow control valve valve rod 6 and flow control valve 2 is realized by the first seal washer 7
(being herein dynamic sealing).The material of first seal washer 7 is soft graphite.Since circulation medium is hydrogen in injection device
And/or argon gas, in order to ensure hydrogen and/or argon gas are not leak into air, it is desirable that injection device carries out helium leak test, and leakage rate is small
In 10-7Pa.m3/s。
Be equipped with flow control valve stuffing box 3 in the flow control valve body 8 of flow control valve 2, flow control valve valve rod 6 from
It is passed through in flow control valve stuffing box 3, if the first seal washer 7 is dry plate, is stacked in flow control valve with coaxial manner
In stuffing box 3.The part that the bottom end of flow control valve stuffing box 3 is in contact with flow control valve body 8 uses the second gasket
Circle 9 realizes sealing (being herein static sealing), and the material of the second seal washer 9 is 316 high mesh soft graphites of folder.
Regulation handle 1 is connected by scale inside and outside sleeve 5 with flow control valve valve rod 6；The inner sleeve of scale inside and outside sleeve 5
Range is 14mm, is equipped with 14 scales；The outer sleeve even circumferential of scale inside and outside sleeve 5 is equipped with 10 scales；Flow control
Valve 2 processed can set the gas flow under 140 different openings by scale inside and outside sleeve 5.
As shown in figure 3, check-valves 10 includes check-valves stuffing box 13 and check valve body 11, check-valves stuffing box 13 is arranged
In check valve body 11, the top of check-valves stuffing box 13 is connected to the bottom end of flow control valve 2 by middle adapter 15, In
The bottom end of check valve body 11 is provided with vent connection 14, for being passed into testing equipment.
It is realized using third seal washer 12 part that the bottom end of check-valves stuffing box 13 is in contact with check valve body 11
It seals (being herein static sealing), the material of third seal washer 12 is 316 high mesh soft graphites of folder.
The length of vent connection 14 can ensure to be transmitted to the temperature of check-valves 10 from testing equipment in injection manipulation
Degree is no more than the design temperature of check-valves 10, guarantees the reliability of sealing.The length of vent connection 14 is passed using CFD software
Thermal simulation determines.
Between flow control valve 2 and air inlet pipe 4, flow control valve 2 and middle adapter 15, middle adapter 15 and check-valves 10
Between, welded seal connection is all made of between check-valves 10 and vent connection 14.The present embodiment is to try for Sodium Water Reaction Test
Rack is tested, injection device valve mechanism size is determined by valve seal than pressure, axial force, torque and valve rod Stress calculation.
Device described in the utility model is not limited to embodiment described in specific embodiment, those skilled in the art
Technical solution according to the present utility model obtains other embodiments, also belongs to the technological innovation scope of the utility model.
Claims (8)
1. a kind of flexible graphite sealing injection device for sodium-cooled fast reactor, for being injected in note hydrogen test into testing equipment
Hydrogen and/or argon gas, it is characterized in that: including the flow control valve that top is equipped with regulation handle (1), side is equipped with air inlet pipe (4)
(2), flow control valve (2) bottom end passes through middle adapter (15) connection check-valves (10), the bottom end of the check-valves (10)
Equipped with vent connection (14), the regulation handle (1) is connected with the flow control valve valve rod (6) in the flow control valve (2),
The lifting of the flow control valve valve rod (6) is driven under the control of the regulation handle (1) to realize to from the air inlet
It manages (4) and enters the vent connection by the flow control valve (2), the middle adapter (15) and the check-valves (10)
(14) control of gas flow, the flow control valve valve rod (6) are threaded through flow control valve stuffing nut (16) and first
In seal washer (7), realized by first seal washer (7) to the flow control valve valve rod (6) and the flow control
The extraneous sealing of valve (2) processed.
2. injection device as described in claim 1, it is characterized in that: the flow control valve body (8) of the flow control valve (2)
Interior to be equipped with flow control valve stuffing box (3), the flow control valve valve rod (6) is worn out of described flow control valve stuffing box (3)
It crosses, first seal washer (7) is if being dry plate, being stacked in the flow control valve stuffing box (3) with coaxial manner.
3. injection device as claimed in claim 2, it is characterized in that: the bottom end of the flow control valve stuffing box (3) with it is described
Sealing is realized using the second seal washer (9) in the part that flow control valve body (8) is in contact.
4. injection device as described in claim 1, it is characterized in that: the regulation handle (1) by scale inside and outside sleeve (5) with
The flow control valve valve rod (6) is connected；The inner sleeve range of the scale inside and outside sleeve (5) is 14mm, is equipped with 14
Scale；The outer sleeve even circumferential of the scale inside and outside sleeve (5) is equipped with 10 scales；The flow control valve (2) passes through institute
Gas flow under 140 different openings can be set by stating scale inside and outside sleeve (5).
5. injection device as described in claim 1, it is characterized in that: the check-valves (10) include check-valves stuffing box (13) and
Check valve body (11), check-valves stuffing box (13) setting is in the check valve body (11), the check-valves filler
The top of case (13) is connected to the bottom end of the middle adapter (15), and the vent connection (14) is arranged in the check valve body
(11) bottom end.
6. injection device as claimed in claim 5, it is characterized in that: the bottom end of the check-valves stuffing box (13) and the non-return
Sealing is realized using third seal washer (12) in the part that valve body (11) is in contact.
7. injection device as described in claim 1, it is characterized in that: the length of the vent connection (14) can ensure injecting
It is no more than the design of the check-valves (10) in operating process from the temperature that the testing equipment is transmitted to the check-valves (10)
Temperature.
8. injection device as described in claim 1, it is characterized in that: the flow control valve (2) and the air inlet pipe (4) it
Between, between the flow control valve (2) and the middle adapter (15), the middle adapter (15) and the check-valves (10) it
Between, welded seal connection is all made of between the check-valves (10) and the vent connection (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036798.3U CN209604617U (en) | 2019-01-09 | 2019-01-09 | A kind of flexible graphite sealing injection device for sodium-cooled fast reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036798.3U CN209604617U (en) | 2019-01-09 | 2019-01-09 | A kind of flexible graphite sealing injection device for sodium-cooled fast reactor |
Publications (1)
| Publication Number | Publication Date |
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| CN209604617U true CN209604617U (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920036798.3U Active CN209604617U (en) | 2019-01-09 | 2019-01-09 | A kind of flexible graphite sealing injection device for sodium-cooled fast reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112066042A (en) * | 2020-07-31 | 2020-12-11 | 清华大学 | Control rod drive line non-return combination valve structure and control rod water pressure drive system |
-
2019
- 2019-01-09 CN CN201920036798.3U patent/CN209604617U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112066042A (en) * | 2020-07-31 | 2020-12-11 | 清华大学 | Control rod drive line non-return combination valve structure and control rod water pressure drive system |
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