CN209495001U - A kind of shut-off valve - Google Patents
A kind of shut-off valve Download PDFInfo
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- CN209495001U CN209495001U CN201822113632.5U CN201822113632U CN209495001U CN 209495001 U CN209495001 U CN 209495001U CN 201822113632 U CN201822113632 U CN 201822113632U CN 209495001 U CN209495001 U CN 209495001U
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Abstract
The disclosure belongs to reactor engineering field, in particular to a kind of shut-off valve.The shut-off valve includes: valve body, flap, valve deck, valve rod, driving device；Wherein valve body is equipped with fluid inlet and fluid outlet；Valve body upper end is fixed and is sealedly connected with valve deck；Valve rod lower end is fixedly connected with flap, and the upper end of valve rod passes through valve deck and connect with driving device, which is characterized in that valve deck shell is equipped with heat sink, and heat sink is rib plate profile structure；The outer wall set of valve rod successively has bellows, stuffing-box；Bellows is between flap and valve deck；To provide the good sodium medium electric check valve of a kind of high security, shock resistance.
Description
Technical field
The disclosure belongs to reactor engineering field, in particular to a kind of shut-off valve.
Background technique
Shut-off valve is mainly used on sodium channel, is carried out defeated logical and truncation control to the sodium medium in pipeline, is pipeline
The high risk component of important component and dielectric leakage.Under normal circumstances, the working environment of sodium valves is low-voltage high-temperature, temperature
It can reach 580 DEG C.Sodium is a kind of excellent defeated hot fluid, but its chemical property is extremely active, and leakage can be to system and existing
Field personnel cause greatly to injure, and therefore, design the structure of sodium medium valve, performance requirement, especially sealing effect propose
Than general valve more strict requirements.
Liquid Sodium is big with thermal conductivity, fusing point is low, the high thermophysical property of boiling point, is a kind of excellent coolant, with
The continuous development of China's all trades and professions is increasingly used in the fields such as various industrial productions, sodium experimental circuit, reactor.
Especially a large amount of shut-off valve is needed to dredge and cut the sodium in pipeline in the main cooling system of fast reactor and its auxiliary system
It is disconnected.Therefore be badly in need of it is a kind of with high safety, reliability, testability sodium shut-off valve.
(1) safety: sodium medium shut-off valve should have not cause casualties, product damage, do not jeopardize personnel health and
The ability of environment.Existing China's nuclear power station is mostly pressurized-water reactor nuclear power plant, and coolant is water, requires not having to the leakage of valve in system
Sodium medium is stringent, and sodium is a kind of metal that chemical property is active, easily chemically reacts with empty gas and water, to guarantee system, equipment
With the safety of personnel, it is desirable that leakage is zero under all kinds of operating conditions within the phase in sodium valves longevity.
(2) reliability: within the entire phase in longevity of operation, the performance of sodium medium shut-off valve is not dropped because of all kinds of operating conditions of system
It is low.
(3) testability: there should be the ability for the state that can timely and accurately determine sodium medium shut-off valve.
(4) valve size limits: existing sodium valves has height high, and the big feature of size causes the antidetonation of valve poor.
Existing sodium stop valve body is mostly that shape is reprocessed after open die forging both at home and abroad at present, and processing capacity is big and stock utilization
It is low；Valve body is mostly flange and valve body assembly welding structure, increases weld seam, reduces safety；Sodium shut-off valve dynamic sealing mostly uses wave
Line seal of tube form, bellows are easily broken, it is difficult to guarantee the requirement that leakage index is zero, reliability is poor.Existing sodium is cut
Only valve valve deck is mostly split type valve deck, and valve deck and extended body are double-body bike, is bolted, and Denso bracket passes through 4
Stud support, overall stiffness is low, poor seismic behavior；Radiator mostly uses heat dissipation sheet form, in high-temperature sodium medium, to reduce
The piece number to specified temperature, cooling fin increases, and causes valve size high, overall stiffness is low, poor seismic behavior.
In conclusion the disadvantages of sodium shut-off valve both domestic and external has size big at present, and overall stiffness is poor, and antidetonation is poor, is discontented with
The requirement of sodium shut-off valve high security, high reliability on sufficient sodium channel.
Utility model content
(1) purpose of utility model
In order to overcome the deficiencies of the prior art, the shut-off valve good present disclose provides a kind of high security, shock resistance.
(2) technical solution
A kind of shut-off valve, the shut-off valve include: valve body, flap, valve deck, valve rod, driving device；
Wherein valve body is equipped with fluid inlet and fluid outlet；Valve body upper end is fixed and is sealedly connected with valve deck；Under valve rod
End is fixedly connected with flap, and the upper end of valve rod passes through valve deck and connect with driving device, which is characterized in that
Valve deck shell is equipped with heat sink, and heat sink is rib plate profile structure；
The outer wall set of valve rod successively has bellows, stuffing-box；Bellows is between flap and valve deck.
Valve body is provided with thermocouple sheath close to the position of bellows upper end.
The sealing of valve body and valve deck junction is added lip welding structure, and is combined with bolt and fixed using sealing ring, spirotallic gasket
Connection.
Sealing ring is O-ring.
Gland is provided on stuffing-box.
Valve deck is solid forging shaping.
Valve deck is provided with casing in the position close to bellows.
Spark plug is provided in casing.
Valve rod uses elevating movement, and baffle is provided on valve rod.
Driving device is electric drive.
(3) beneficial effect
Valve deck uses solid forging structure in the shut-off valve of the disclosure, reduced compared to more traditional shut-off valve processing cost and
Stock utilization improves, and greatly improves the reliability of product；
Valve deck does not use cooling fin and is provided with heat sink, and not only realize reduction valve actuator connects Pan Chu's
Temperature guarantees that valve actuator can work normally, and also reduces the nearly 150mm of height of valve, it is close to reduce mounting height
1000mm.Valve overall stiffness is substantially improved, improves the anti-seismic performance of valve.
The shut-off valve of the disclosure adds lip welding structure using bellows and filler, O-ring triple seal, spirotallic gasket, simultaneously
Studs is set on the outside of lip weldering, realizes the requirement of sodium valves zero leakage, substantially increases the safety of valve；
The disclosure is provided with spark plug in shut-off valve valve deck sleeve position simultaneously, and spark plug connects alarm, and spark plug exists
Breakdown will not occur under the conditions of low tension and generate electric spark, therefore entire spark plug is in off state, once sylphon seal
It fails, the metallic sodium of liquid will be full of among the central electrode and lateral electrode of spark plug, so that spark plug forms access, thus
The alarm connecting with spark plug just will call the police, and reminds the sylphon seal of staff's shut-off valve no longer valid, takes in time
Corresponding compensatory time measure, guarantees production safety；One thermocouple sheath, side are set close to bellows upper-end part of driving in valve body simultaneously
Just temperature herein is measured, the measurability of valve is realized.
Detailed description of the invention
Fig. 1 is the stop valve structure schematic diagram in one embodiment of the disclosure；
Fig. 2 is the A partial enlarged view of shut-off valve in Fig. 1；
Wherein 1 driving device, 2 valve deck, 3 valve rod, 4 bellows, 5 valve body, 6 flap, 7 thermocouple sheath, 8 casing 9 radiates
The weldering of 12 sealing ring of plate 10 stuffing-box, 11 spirotallic gasket, 13 lip
Specific embodiment
In order to better illustrate the technical solution of the disclosure, it is introduced below with reference to specific embodiment:
Shut-off valve includes: valve body 5, flap 6, valve deck 2, valve rod 3, driving device 1；Wherein valve body 5 is equipped with fluid inlet
And fluid outlet；5 upper end of valve body is fixed and is sealedly connected with valve deck 2；The sealing of valve body 5 and 2 junction of valve deck uses O-shaped sealing
Circle, spirotallic gasket 11 plus lip weld 13 structures, and are combined with bolt and are fixedly connected；3 lower end of valve rod is fixedly connected with flap 6, and valve
The upper end of bar 3 passes through valve deck 2 and connect with driving device 1, and the outer wall set of valve rod 3 successively has bellows 4, stuffing-box 10；Bellows 4
Between flap 6 and valve deck 2, gland is provided on stuffing-box 10.Baffle is provided on valve rod 3 to be prevented from rotating.Valve rod 3
Using elevating movement.Valve body 5 is provided with thermocouple sheath 7 close to the position of 4 upper end of bellows；2 solid forging shaping of valve deck, valve
2 shell of lid is equipped with heat sink 9, and heat sink 9 is rib plate profile structure；Valve deck 2 is provided with casing 8 in the position close to bellows 4, covers
Spark plug is provided in pipe 8.Spark plug connects alarm, and breakdown will not occur under the conditions of low tension and generate electrical fire for spark plug
Flower, therefore entire spark plug is in off state, once 4 seal failure of bellows, in the central electrode and lateral electrode of spark plug
Between will be full of liquid metallic sodium so that spark plug formed access mentioned so that the alarm connecting with spark plug just will call the police
The bellows 4 of staff's shut-off valve of waking up seals no longer valid, takes corresponding compensatory time measure in time, guarantees production safety；Together
When valve body 5 close to 4 upper-end part of driving of bellows be arranged a thermocouple sheath 7, be convenient for measuring temperature herein, realize valve
Measurability.
As shown in Figure 1, shut-off valve is in close state, start valve actuator 1, valve rod 3 drives flap 6 to start upwards
Movement, flap 6 use taper valve 6, and sealing surface is in the conical surface, and flap 6 is for linear motion along the center line of fluid；The fortune of valve rod 3
Dynamic form is elevating lever-type, easy to maintenance since frictional force is small between sealing surface during opening and closing, is suitable for high, medium and low pressure valve
Door.Even if at high temperature, flap 6 also can satisfy seal request, shut-off valve fluid outlet flow starts to be gradually increased at this time, directly
Fluid inlet is decontroled completely to flap 6, completes the opening procedure of sodium medium shut-off valve；Shut-off valve is in the open state at this time.
Shut-off valve in the open state, start valve actuator 1, valve rod 3 push flap 6 start to move downward,
Fluid outlet flow is gradually reduced, until flap 6 completely encloses fluid outlet channels, completes shut-off valve closing process, at this time
Shut-off valve is in close state.
Wherein valve deck 2 uses solid forging structure in shut-off valve, compared to more traditional shut-off valve processing cost reduction and material
Expect that utilization rate improves, greatly improves the reliability of product；
Valve deck 2 is not provided with heat sink 9 using cooling fin, and not only realize reduction valve actuator 1 connects disk
The temperature at place guarantees that valve actuator 1 can work normally, also reduces the nearly 150mm of height of valve, it is high to reduce installation
Spend nearly 1000mm.Valve overall stiffness is substantially improved, improves the anti-seismic performance of valve.
Shut-off valve uses bellows 4 and filler, O-ring triple seal, realizes the requirement of sodium valves zero leakage, mentions significantly
The high safety of valve；
2 casing of shut-off valve valve deck, 8 position is provided with spark plug, and spark plug connects alarm, and spark plug is in low pressure electric condition
Under breakdown will not occur generate electric spark, therefore entire spark plug is in off state, once 4 seal failure of bellows, spark
The metallic sodium of liquid will be full of among the central electrode and lateral electrode of plug, so that spark plug forms access, thus and spark plug
The alarm of connection just will call the police, and reminds the bellows 4 of staff's shut-off valve to seal no longer valid, takes corresponding benefit in time
Not measure guarantees production safety；One thermocouple sheath 7 is set close to 4 upper-end part of driving of bellows in valve body 5 simultaneously, facilitates survey
The temperature of amount herein, realizes the measurability of valve.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the disclosure to the disclosure
Mind and range.If in this way, these modifications and variations of the disclosure are belonged to the model of disclosure claim and its equivalent technology
Within enclosing, then the disclosure is also intended to include these modifications and variations.Above-described embodiment or embodiment are only to the disclosure
For example, the disclosure can also be implemented with other ad hoc fashions or other particular form, without departing from the disclosure
Main idea or substantive characteristics.Therefore, the embodiment of description is regarded as illustrative and non-limiting in any way.This
Scope of disclosure should be illustrated that any variation equivalent with the intention and range of claim also should include by appended claims
Within the scope of this disclosure.
Claims (10)
1. a kind of shut-off valve, which includes: valve body (5), flap (6), valve deck (2), valve rod (3), driving device (1)；
Wherein the valve body (5) is equipped with fluid inlet and fluid outlet；Valve body (5) upper end is fixed and is sealedly connected with valve
It covers (2)；Valve rod (3) lower end is fixedly connected with flap (6), and the upper end of valve rod (3) passes through valve deck (2) and driving device
(1) it connects, which is characterized in that
Valve deck (2) shell is equipped with heat sink (9), and the heat sink (9) is rib plate profile structure；
The outer wall set of the valve rod (3) successively has bellows (4), stuffing-box (10)；The bellows (4) be in flap (6) with
Between valve deck (2).
2. a kind of shut-off valve according to claim 1, which is characterized in that portion of the valve body (5) close to bellows (4) upper end
Position is provided with thermocouple sheath (7).
3. a kind of shut-off valve according to claim 1, which is characterized in that the sealing of the valve body (5) and valve deck (2) junction
(13) structure is welded using sealing ring (12), spirotallic gasket (11) plus lip, and is combined with bolt and is fixedly connected.
4. a kind of shut-off valve according to claim 3, which is characterized in that the sealing ring (12) is O-ring.
5. a kind of shut-off valve according to claim 1, which is characterized in that be provided with gland on the stuffing-box (10).
6. a kind of shut-off valve according to claim 1, which is characterized in that the valve deck (2) is solid forging shaping.
7. a kind of shut-off valve according to claim 1, which is characterized in that the valve deck (2) is in the position close to bellows (4)
It is provided with casing (8).
8. a kind of shut-off valve according to claim 7, which is characterized in that be provided with spark plug in described sleeve pipe (8).
9. a kind of shut-off valve according to claim 1, which is characterized in that the valve rod (3) uses elevating movement, and valve rod
(3) baffle is provided on.
10. a kind of shut-off valve according to claim 1, which is characterized in that the driving device (1) is electric drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113632.5U CN209495001U (en) | 2018-12-17 | 2018-12-17 | A kind of shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113632.5U CN209495001U (en) | 2018-12-17 | 2018-12-17 | A kind of shut-off valve |
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| Publication Number | Publication Date |
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| CN209495001U true CN209495001U (en) | 2019-10-15 |
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ID=68153055
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822113632.5U Active CN209495001U (en) | 2018-12-17 | 2018-12-17 | A kind of shut-off valve |
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| CN (1) | CN209495001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519581A (en) * | 2018-12-17 | 2019-03-26 | 中国原子能科学研究院 | A kind of shut-off valve |
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2018
- 2018-12-17 CN CN201822113632.5U patent/CN209495001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519581A (en) * | 2018-12-17 | 2019-03-26 | 中国原子能科学研究院 | A kind of shut-off valve |
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