CN209569381U - A kind of high temperature resistant molten salt shut-off valve - Google Patents
A kind of high temperature resistant molten salt shut-off valve Download PDFInfo
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- CN209569381U CN209569381U CN201822052657.9U CN201822052657U CN209569381U CN 209569381 U CN209569381 U CN 209569381U CN 201822052657 U CN201822052657 U CN 201822052657U CN 209569381 U CN209569381 U CN 209569381U
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- valve
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- temperature resistant
- high temperature
- molten salt
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Abstract
The utility model relates to a kind of high temperature resistant molten salt shut-off valves, including valve body, valve deck and valve rod, it further include bellows, the outside of the valve rod is arranged in the bellows, the bellows includes the first bellows and the second bellows, the lower end of first bellows connects straight section metal tube, and the lower end of the straight section metal tube connects the second bellows.The valve mechanism of the utility model prevents media accumulation after crystallization from blocking valve flowing channel in turn at valve dead angle, has good air flowability.High frequency time opening/shutting valve occasion is more suitable for prevent medium from leaking outside using the dual-seal form of bellows and high temperature resistant filler in valve rod dynamic sealing vice division chief.Flap, valve body sealing surface use pile-up welding hard alloy or other special materials, effectively improve anti scuffing, the anti-seizing property of sealing pair, improve sealing pair service life.
Description
Technical field
The utility model belongs to electromechanical components technical field, is related to a kind of high temperature resistant molten salt shut-off valve.
Background technique
Since the 21th century, energy and environmental problem becomes increasingly conspicuous, the finiteness of fossil energy resource, it is non-renewable and
Its excessive use seriously affects environment, leads to greenhouse gases excessive emissions, climate warming, regional climate and the serious evil of ecology
Change etc., it is greatly endangered to the spatial band of human survival.The outstanding advantages and development potentiality of solar energy thermal-power-generating in recent years by
To extensive concern, the significant challenge that it is faced at present is to be reduced to cost of electricity-generating can mutually compete with fossil fuel power.In advance
Meter is 20 years following, and stable, economic solar energy thermal-power-generating technology will reach its maturity, and strives power with the big business condition of intensity.Too
Positive energy heat power generation has the advantages that power output is stable and continuous, at low cost, and technology economy advantage is obvious, and what is developed is strategic
It is particularly significant.
Solar energy thermal-power-generating is made of two big units: solar energy heat-collecting heat-storage unit and heat to power output generator unit.The former
It mainly include optically focused, heat absorption, heat accumulation and heat exchange etc.；The latter includes heat engine, thermal control, electrical, water supply, changes the parts such as water, HVAC.
Solar energy thermal-power-generating technology is developed so far from last century the eighties, to the material for serving as its heat accumulation and heat transfer medium
Diversified trial, including water and steam, air, liquid metal, conduction oil and fused salt etc. are carried out.With photo-thermal power generation technology
Innovation, required heat transfer medium is higher and higher using temperature, it is desirable that heat-transfer capability it is also more and more strong.Since fused salt has
It is higher to use temperature, high thermal stability, high specific heat capacity, high convective heat-transfer coefficient, low viscosity, low saturated vapor pressure, low price
Deng the advantage of " four high three is low ", become one of highest biography heat-storage medium of degree of recognition in current photo-thermal power generation field.
The Molten Binary Salts (+40% potassium nitrate of 60% sodium nitrate) and ternary generally used in current solar-thermal generating system are molten
A certain amount of strong corrosive chemical component is all contained in salt (+7% sodium nitrate of+40% sodium nitrite of 53% potassium nitrate), is made
Have the characteristics that running temperature height, freezing point compared with high, operation difference variation is big for medium.
As fused salt heat accumulation is in the continuous universal of photo-thermal power generation industry, the function of fused salt valve is controlled for fused-salt medium
Valve, its importance are also self-evident.It as the key equipment in energy-storage system, whole system operation safety and
Vital role is play in terms of reliability.There are quality problems and is possible to influence entire electricity in single fused salt valve in system
The normal operation stood causes immeasurable loss.Due to the characteristic of salt melting system, fused salt valve used in photo-thermal power station is general
Store-through frozen block, burn into high temperature bite, in terms of technical problem.
From the point of view of valve version, fused salt valve mainly includes several forms such as gate valve, shut-off valve and butterfly valve.
Based on this, our company puts into various development of resources high-temperature molten salt shut-off valves thus to solve the problems, such as this.External product removes
Practical application example is abundant outer, and raw material material may be preferable compared to domestic.Though its own product in several test platforms and
There are too small range applications in circuit, but in general, and domestic fused salt valve manufacturer rarely has case really.But overseas fused salt valve is not ten yet
Quan Shimei, using overseas product price is higher, the delivery cycle is long, after-sale service response is also relatively slow.And domestic fused salt valve is then
On the contrary, it is advantageous that reasonable prices, shorter production cycle and quick after-sale service.
High-temperature molten salt shut-off valve belongs to industry sophisticated technology, represents the production domesticization development of the mating fused salt valve of photo-thermal power generation industry
Direction.As our company is researched and developed successfully, and product can be quickly formed and introduced to the market.It is expected that preferable social benefit and warp can be obtained
Ji benefit.
Existing valve is mainly used for the weak corrosive medium operating condition such as vapour, water, oil, and high-temperature molten salt shut-off valve is deposited under its operating condition
In medium high temperature, the problems such as dielectric corrosion, medium fusing point be higher, the condensation of long-term alternating hot and cold and natural climate, it is existing
Phenomena such as fused salt valve in reality is not stifled i.e. leakage, and valves leakage leaks outside, valve rod deforms, cavitation is generally existing.
Patent 201720594977.X discloses a kind of high-temperature bellow valve, including valve body, valve deck, valve rod, flap, valve
Seat and bellows, valve deck middle part are provided with valve deck lumen, electric heater unit, lower valve rod packet are fixedly installed on the outer surface of valve deck
Include first body of rod, second body of rod and the third body of rod, the junction of first body of rod and second body of rod is provided with the first chamfering of annular；
The junction of second body of rod and the third body of rod is provided with the second chamfering；It is socketed with guide sleeve on first body of rod, is set on guide sleeve
It is equipped with fused salt escape orifice, valve deck upper end is provided with sealing cover, is provided with stem through-hole, stem through-hole lower port position in the middle part of sealing cover
It installs and is equipped with sealing cone, stem through-hole upper port position is provided with packing groove, and filler is provided in packing groove, and filler upper end is set
It is equipped with gland, gland upper end is provided with gland limited block.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of high temperature resistant molten salt shut-off valve, avoids flow resistance, system
It makes conveniently, saves cost.
The utility model provides the following technical solution:
A kind of high temperature resistant molten salt shut-off valve, including valve body, valve deck and valve rod, further include bellows, the bellows setting
In the outside of the valve rod, the bellows includes the first bellows and the second bellows, and the lower end of first bellows connects
Straight section metal tube is connect, the lower end of the straight section metal tube connects the second bellows.
The valve of the application includes dual-seal, and bellows one end connects valve rod, and the other end connects valve deck, forms a confined air
Between, filler and valve deck, valve rod, bellows form another confined space.First bellows and the second bellows and connection straight section
Metal tube is the one-piece parts that a welding manufacture comes out.The bellows is arranged between valve deck and valve rod, and/or setting exists
Between valve body and valve rod.
It is preferably in the above scheme, second bellows is set to the top of flap, the flap and the valve
Bar connection, the flap are contacted with the valve seal.
It in any of the above-described scheme preferably, further include stuffing-box, the stuffing-box is set to first bellows
Top, between the stuffing-box and valve rod formed place filler space.
In any of the above-described scheme preferably, the filler is high temperature resistant filler.
In any of the above-described scheme preferably, the filler is vermiculite filler or high temperature resistant mica filler.
In any of the above-described scheme preferably, the valve rod is high-temperature resistant anti-corrosive corrosion material.
In any of the above-described scheme preferably, the face of the flap and valve seal contact uses pile-up welding hard alloy.
The pressure parts such as valve rod, spool, valve body, valve deck fire resistant anticorrosive material, can adopt in the valve mechanism of the application
With high temperature forged alloy steel (as used ASTM A182 F347H), bellows uses INCONNEL alloy, and sealing surface is department
Too vertical alloy.
It in any of the above-described scheme preferably, further include electric heat tracing device.
In any of the above-described scheme preferably, the electric heat tracing device coats the high temperature resistant molten salt shut-off valve.
In any of the above-described scheme preferably, the upper end of first bellows and/or the lower end of the second bellows connect
Connect ripple pipe holder.
The utility model uses and captures the antifreeze plugging technique of fused salt valve, fused salt valve high temperature reliability technology, high-temp anti-corrosion
Sealing technique, alternating hot and cold match materials technology, electric tracing designing technique.The valve mechanism of the utility model is situated between after preventing crystallization
Matter is deposited at valve dead angle and then blocks valve flowing channel, has good air flowability.Wave is used in valve rod dynamic sealing vice division chief
The dual-seal form of line pipe and high temperature resistant filler is more suitable for high frequency time opening/shutting valve occasion to prevent medium from leaking outside.Flap,
Valve body sealing surface uses pile-up welding hard alloy or other special materials, effectively improves anti scuffing, the anti-seizing property of sealing pair, mentions
High sealing pair service life.The selection of high-temperature molten salt shut-off valve stem material, meets high temperature and anticorrosion work environment, while
Worst hot case also has good mechanical property.Using special electric heat tracing device, prevent valve frozen block.The utility model is compared
T-valve uses Y-valve body, and Y-valve body avoids flow resistance, and the possible residual liquid of T-type valve block lower half cannot exclude, at a temperature of
When drop, T-valve is easier to crystallize, blocking.Both ends bellows is used in the application, manufacture is more convenient, more cost-effective.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of a preferred embodiment of high temperature resistant molten salt shut-off valve of the utility model；
Fig. 2 is the upper half enlarged drawing of Fig. 1；
Fig. 3 is the lower half enlarged drawing of Fig. 1；
Fig. 4 is a kind of structural schematic diagram of another preferred embodiment of high temperature resistant molten salt shut-off valve of the utility model；
Fig. 5 is the upper half enlarged drawing of Fig. 4；
Fig. 6 is the lower half enlarged drawing of Fig. 4.
Specific embodiment
In order to further appreciate that the technical characteristics of the utility model, the utility model is carried out combined with specific embodiments below
It is set forth.Embodiment only has illustrative effect to the utility model, without the effect of any restrictions, ability
The modification for any unsubstantiality that the technical staff in domain makes on the basis of the utility model, all should belong to the utility model
Protection scope.
Embodiment 1:
As shown in Figure 1, a kind of high temperature resistant molten salt shut-off valve, including valve body 1, valve deck 8 and valve rod 3, it further include bellows, institute
Bellows setting is stated in the outside of the valve rod (3), the bellows includes the first bellows and the second bellows 4, and described the
The lower end of one bellows connects straight section metal tube, and the lower end of the straight section metal tube connects the second bellows 4.
First bellows and the second bellows and connection straight section metal tube are the one-piece parts that a welding manufacture comes out.
The bellows is arranged between valve deck and valve rod, and/or is arranged between valve body and valve rod.
In the present embodiment, second bellows 4 is set to the top of flap 2, and the flap 2 is connect with the valve rod 3,
The flap 2 and the valve body 1 are in sealing contact.
The valve rod includes upper boom and lower beam, and lower beam top has spherical arc, and upper boom lower part has spherical arc, upper boom
With lower beam by being connect to clamping plate.The flap 2 is connect with the lower beam.
It further include stuffing-box in the present embodiment, the stuffing-box is set to the top of first bellows, the filler
The space for placing filler 10 is formed between letter and valve rod 3.
In the present embodiment, the filler 10 is high temperature resistant filler.
In the present embodiment, the filler 10 is vermiculite filler or high temperature resistant mica filler.
In the present embodiment, the valve rod 3 is high-temperature resistant anti-corrosive corrosion material.
In the present embodiment, the flap 2 and the face in sealing contact of valve body 1 use pile-up welding hard alloy or other special materials
Material.
It further include electric heat tracing device in the present embodiment.
In the present embodiment, the electric heat tracing device coats the high temperature resistant molten salt shut-off valve.
In the present embodiment, the lower end of the upper end of first bellows and/or the second bellows 4 connects ripple pipe holder.
The present embodiment is directed to high temperature, the corrosive conditions of high-temperature molten salt shut-off valve, selects the parts such as suitable pressure part, valve rod
Material use good fluidity valve mechanism, avoid preventing from blocking there are dead angle；Using pair of bellows and high temperature resistant filler
Seal form prevents from leaking outside at filler；Using new material or new process measure, anti scuffing, the anti-seizing property of sealing pair are improved,
Improve sealing pair service life；Using special electric heat tracing device, prevent valve frozen block.
As shown in Figure 1, the high temperature resistant molten salt shut-off valve includes valve body 1, flap 2, valve rod 3, the second bellows 4, sealing
Piece 5, nut I 7, valve deck 8, packing sheet 9, filler 10, filler set 11, filler plate 12, stud II 13, nut II 14, is stood stud I 6
Column 15, bell-shaped percussion instrument, used in ancient time by troops on march fishplate bar 16 and stem nut 17.Wherein, valve body 1 is connect with valve deck 8 by stud I 6 and nut I 7, valve body 1 and valve deck 8
Between diaphragm seal 5 is set, the second bellows 4 is positioned partially or entirely in the valve body 1, and the lower end of valve rod 3 is connect with flap 2,
Valve deck 8 is connect with filler plate 12 by stud II 13 and nut II 14, is placed with and is filled out in the space that valve rod 3 is formed with stuffing-box
Material 10, the lower section of filler 10 are provided with packing sheet 9, and the top of filler 10 is provided with filler set 11, the top setting of filler set 11
There is filler plate 12, filler plate 12 is connect with valve deck 8 by stud II 13 and nut II 14, and bell-shaped percussion instrument, used in ancient time by troops on march fishplate bar 16 passes through column 15 and bar spiral shell
Mother 17 connect with valve deck 8.
Embodiment 2:
As shown in Fig. 2, a kind of high temperature resistant molten salt shut-off valve, including valve body 1, valve deck 8 and valve rod 3, it further include bellows, institute
State the outside that the valve rod 3 is arranged in bellows, the bellows includes the first bellows and the second bellows 4, and described first
The lower end of bellows connects straight section metal tube, and the lower end of the straight section metal tube connects the second bellows 4.
First bellows and the second bellows and connection straight section metal tube are the one-piece parts that a welding manufacture comes out.
The bellows is arranged between valve deck or valve body and valve rod.
In the present embodiment, second bellows 4 is set to the top of flap 2, and the flap 2 is connect with the valve rod 3,
The flap 2 and the valve body 1 are in sealing contact.
The valve rod includes upper boom and lower beam, and lower beam top has spherical arc, and upper boom lower part has spherical arc, upper boom
With lower beam by being connect to clamping plate.The flap 2 is connect with the lower beam.
It further include upper cover 33 in the present embodiment, the upper cover 33 is set to the top of first bellows and valve deck, institute
State the space for being formed between upper cover 33 and valve rod 3 and placing filler 10.
In the present embodiment, the filler 10 is vermiculite filler or high temperature resistant mica filler.
In the present embodiment, the valve rod 3 is high-temperature resistant anti-corrosive corrosion material.
In the present embodiment, the flap 2 and the face in sealing contact of valve body 1 use pile-up welding hard alloy or other special materials
Material.
It further include electric heat tracing device in the present embodiment.
In the present embodiment, the electric heat tracing device coats the high temperature resistant molten salt shut-off valve.
In the present embodiment, the lower end of the upper end of first bellows and/or the second bellows 4 connects ripple pipe holder.
The present embodiment is directed to high temperature, the corrosive conditions of high-temperature molten salt shut-off valve, selects the parts such as suitable pressure part, valve rod
Material use good fluidity valve mechanism, avoid preventing from blocking there are dead angle；Using pair of bellows and high temperature resistant filler
Seal form prevents from leaking outside at filler；Using new material or new process measure, anti scuffing, the anti-seizing property of sealing pair are improved,
Improve sealing pair service life；Using special electric heat tracing device, prevent valve frozen block.
As shown in Fig. 2, the high temperature resistant molten salt shut-off valve includes valve body 1, flap 2, limb 21, valve rod 3, the second bellows
4, diaphragm seal 5, stud I 6, nut I 7, valve deck 8, the second diaphragm seal 20, stud III 31, nut III 32, upper cover 33, packing sheet 9,
Filler 10, filler set 16, filler plate 17, stud II 13 and nut II 14.Wherein, valve body 1 and valve deck 8 pass through stud I 6 and nut
I 7 connections, are arranged diaphragm seal 5 between valve body 1 and valve deck 8, the second bellows 4 is located fully or partially in the valve body 1, valve rod 3
Lower end connect with flap 2, be provided with limb 21 on flap 2, valve deck 8 and upper cover 33 are connected by stud III 31 and nut III 32
It connects, the second diaphragm seal 20 is set between valve deck 9 and upper cover 33, is placed with filler 10 in the space that valve rod 3 and upper cover 33 are formed, fills out
The lower section of material 10 is provided with packing sheet 9, and the top of filler 10 is provided with filler set 11, and the top of filler set 11 is provided with filler plate
12, filler plate 12 is connect with upper cover 33 by stud II 13 and nut II 14.
Claims (10)
1. a kind of high temperature resistant molten salt shut-off valve, including valve body (1), valve deck (8) and valve rod (3), it is characterised in that: further include ripple
Pipe, in the outside of the valve rod (3), the bellows includes the first bellows and the second bellows (4) for the bellows setting,
The lower end of first bellows connects straight section metal tube, and the lower end of the straight section metal tube connects the second bellows (4).
2. high temperature resistant molten salt shut-off valve according to claim 1, it is characterised in that: second bellows (4) is set to
The top of flap (2), the flap (2) connect with the valve rod (3), and the flap (2) and the valve body (1) are in sealing contact.
3. high temperature resistant molten salt shut-off valve according to claim 1, it is characterised in that: it further include stuffing-box or upper cover, it is described
Stuffing-box is set to the top of first bellows, and the sky for placing filler (10) is formed between the stuffing-box and valve rod (3)
Between；The upper cover is set to the top of first bellows and the valve deck, is formed between the upper cover (33) and valve rod (3)
Place the space of filler (10).
4. high temperature resistant molten salt shut-off valve according to claim 3, it is characterised in that: the filler (10) is filled out for high temperature resistant
Material.
5. high temperature resistant molten salt shut-off valve according to claim 4, it is characterised in that: the filler (10) be vermiculite filler or
High temperature resistant mica filler.
6. high temperature resistant molten salt shut-off valve according to claim 1, it is characterised in that: the valve rod (3) is high-temperature resistant anti-corrosive
Corrosion material.
7. high temperature resistant molten salt shut-off valve according to claim 2, it is characterised in that: the flap (2) and valve body (1) sealing
The face of contact uses pile-up welding hard alloy.
8. high temperature resistant molten salt shut-off valve according to claim 1, it is characterised in that: further include electric heat tracing device.
9. high temperature resistant molten salt shut-off valve according to claim 8, it is characterised in that: the electric heat tracing device cladding is described resistance to
High-temperature molten salt shut-off valve.
10. high temperature resistant molten salt shut-off valve according to claim 1, it is characterised in that: the upper end of first bellows and/
Or second bellows (4) lower end connect ripple pipe holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822052657.9U CN209569381U (en) | 2018-12-07 | 2018-12-07 | A kind of high temperature resistant molten salt shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822052657.9U CN209569381U (en) | 2018-12-07 | 2018-12-07 | A kind of high temperature resistant molten salt shut-off valve |
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| Publication Number | Publication Date |
|---|---|
| CN209569381U true CN209569381U (en) | 2019-11-01 |
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ID=68321680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822052657.9U Active CN209569381U (en) | 2018-12-07 | 2018-12-07 | A kind of high temperature resistant molten salt shut-off valve |
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| Country | Link |
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| CN (1) | CN209569381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984128A (en) * | 2021-02-18 | 2021-06-18 | 浙江万龙机械有限公司 | Corrugated pipe flushing-free valve |
| CN114645970A (en) * | 2022-03-21 | 2022-06-21 | 南方阀门科技有限公司 | Molten salt regulating valve |
-
2018
- 2018-12-07 CN CN201822052657.9U patent/CN209569381U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984128A (en) * | 2021-02-18 | 2021-06-18 | 浙江万龙机械有限公司 | Corrugated pipe flushing-free valve |
| CN114645970A (en) * | 2022-03-21 | 2022-06-21 | 南方阀门科技有限公司 | Molten salt regulating valve |
| CN114645970B (en) * | 2022-03-21 | 2024-02-23 | 南方阀门科技有限公司 | Fused salt regulating valve |
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