CN217440806U - Sealed butterfly valve suitable for fused salt device - Google Patents
Sealed butterfly valve suitable for fused salt device Download PDFInfo
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- CN217440806U CN217440806U CN202220867676.0U CN202220867676U CN217440806U CN 217440806 U CN217440806 U CN 217440806U CN 202220867676 U CN202220867676 U CN 202220867676U CN 217440806 U CN217440806 U CN 217440806U
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Abstract
The utility model belongs to the technical field of fluid control valve, a sealed butterfly valve suitable for fused salt device is related to, including the valve body, be equipped with the upper cover on the valve body, upper cover and the inside transmission shaft that is equipped with of valve body, valve body shaft hole is equipped with dustproof packing, be equipped with dustproof packing on the transmission shaft, and compress tightly through T type bearing, the valve plate is installed in the valve body chamber through flat key connection with the transmission shaft to adopt cylinder end hexagon bolt to carry out radial positioning, the valve plate lower extreme is equipped with sealing ring and clamping ring in proper order, be equipped with C type becket between sealing ring and the valve plate, the seal structure of C type becket built-in spring; the utility model can overcome the material deformation during the temperature alternation, and has the sealing function; the flow passage in the valve body adopts a Venturi structure design, residual media in the valve are automatically discharged, and the phenomenon that accumulated liquid in the flow passage is frozen and blocked to cause internal leakage of the valve body is prevented; the valve body shaft hole increases dustproof graphite packing, reduces that the granule medium gets into the inside valve jam that leads to in shaft hole.
Description
Technical Field
The utility model belongs to the technical field of the fluid control valve, a sealed butterfly valve suitable for fused salt device is related to.
Background
The basic principle of the molten salt power generation device is to collect the heat of the sun, transfer the energy into salt to melt the salt, enable the temperature of the salt to be as high as 600 ℃, and then conduct energy exchange and conversion through heat transfer of the salt. High-temperature liquid salt circularly flows, water is changed into steam through heat exchange circulation, and then the steam turbine is pushed by the steam, so that power generation is realized; in the operation process of the molten salt power generation device, the temperature of a molten salt medium has alternating property, so that the device is required to have stable regulation performance with a valve in the device, and the device can adapt to the alternating temperature in a device system; the molten salt medium exists in three states of crystal, liquid and gas, and dead zones which are easy to remain in the flow channel are easy to cause the frozen blockage of accumulated liquid; under a low-temperature state, the molten salt is easy to crystallize and enters a valve rod gap to cause damage and jamming of a transmission shaft; under the high temperature state, a transmission shaft in the valve is easy to deform, the surface hardness value is reduced, and scratches are easy to generate in the action process; molten salt media are susceptible to cavitation and toxic.
In the face of the above harsh molten salt use conditions, the butterfly valve in the prior art cannot be well used in the molten salt power generation device; the valve is easy to generate phenomena of jamming, incapability of acting, incapability of meeting the requirements of the device in sealing performance and the like, and finally influences the use of the device to cause economic loss.
Disclosure of Invention
An object of the utility model is to provide a sealed butterfly valve suitable for fused salt device, this sealed butterfly valve can overcome the valve hydrops and freeze stifled, fused salt crystallization, reason such as material deformation lead to action jamming, unable action and sealing performance scheduling problem not up to standard, ensure that the valve keeps better operating condition in the fused salt device for a long time, guarantee that the fused salt device moves safely and steadily.
According to the utility model provides a technical scheme: a sealing butterfly valve suitable for a molten salt device comprises a valve body, wherein an upper cover is arranged on the valve body, a transmission shaft is arranged inside the upper cover and the valve body, a dustproof packing is arranged in a shaft hole of the valve body and is tightly pressed through a T-shaped bearing, a valve plate and the transmission shaft are arranged in a valve body cavity through a flat key and are radially positioned by adopting a cylindrical end hexagon bolt, a sealing ring and a pressing ring are sequentially arranged at the lower end of the valve plate, a C-shaped metal ring is arranged between the sealing ring and the valve plate, and a sealing structure of a spring is arranged in the C-shaped metal ring; so that a radial clearance is formed between the sealing ring and the valve plate; the valve body is externally provided with a heat preservation jacket, the inside of the heat preservation jacket circulates through high-temperature steam circulation, and the upper cover is provided with an electric tracing band which heats and preserves the heat of the inner cavity of the valve body and the position of the packing box.
Preferably, the flow passage in the valve body adopts a Venturi structure.
Preferably, a metal tooth-shaped gasket is arranged between the valve body and the upper cover, and the metal tooth-shaped gasket and the lip-shaped welding double seal are adopted.
Preferably, a step shaft is arranged in the middle of the transmission shaft, and a limiting assembly and a plurality of plane bearings are arranged on the upper surface and the lower surface of the step shaft and are positioned with the valve body through an upper cover.
Preferably, a check washer is arranged between the valve plate and the pressing ring, a disc-shaped spring is arranged at the bottom of the threaded hole, and the pressing ring is fastened through an inner hexagon screw.
Preferably, the valve body and the end part of the upper cover both adopt a packing structure, the packing structure comprises packing, a packing gland and a packing press plate, the upper cover is internally provided with the packing, the upper end of the upper cover is provided with the packing gland, the packing press plate is arranged on the packing gland and is fixed through the packing gland, the packing press plate, a stud and a nut.
Preferably, the filler is high-temperature-resistant mica or ceramic material.
Preferably, the contact part of the transmission shaft and the T-shaped bearing is coated with STE alloy in a surface mode.
Preferably, an anti-seizure agent is disposed between the transmission shaft and the bearing, so that a protective film is formed between the transmission shaft and the flat bearing.
The positive progress effect of this application lies in:
the embodiment of the utility model provides a pair of sealed butterfly valve suitable for fused salt device, the advantage is as follows:
1. the flow passage in the valve body adopts a Venturi structure design, residual media in the valve are automatically discharged, and accumulated liquid in the flow passage is prevented from being frozen and blocked to cause internal leakage of the valve body.
2. The valve body shaft hole increases dustproof graphite packing, reduces that the granule medium gets into the inside valve jam that leads to in shaft hole.
3. The energy increasing spring sealing structure is arranged between the sealing ring and the valve plate, the locking gasket is added on the screw at the pressing ring, the disc spring is arranged at the bottom of the threaded hole, the deformation of materials can be overcome during temperature alternation, and the sealing effect is achieved.
4. The valve body and the upper cover metal tooth-shaped gasket are welded with the lip shape for double sealing, so that the leakage risk of the valve is reduced, the leakage of toxic and harmful media is effectively prevented, and the sealing performance of the valve is improved.
Drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is an enlarged view of the structure at I in fig. 1.
Fig. 3 is an enlarged view of the structure at II in fig. 1.
Fig. 4 is an enlarged view of the structure at III in fig. 1.
In the figure: the valve comprises a valve body 1, a sealing ring 2, a pressing ring 3, a valve plate 4, a heat-insulating jacket 5, a T-shaped bearing 6, a transmission shaft 7, an upper cover 8, an electric tracing band 9, packing 10, a packing gland 11, a packing pressing plate 12, a stud 13, a nut 14, a flat key 16, a hexagonal bolt 17, a metal tooth-shaped gasket 18, a limiting component 19, a plane bearing 20, a dustproof packing 21, a C-shaped metal ring 22, a spring 23, a disc-shaped spring 24, a locking gasket 25, an inner hexagonal screw 26 and a bearing 27.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1-4, the utility model relates to a sealed butterfly valve suitable for molten salt device, including valve body 1, be equipped with upper cover 8 on the valve body 1, upper cover 8 and the inside transmission shaft 7 that is equipped with of valve body 1, be equipped with dustproof packing 21 in the valve body 1 shaft hole, and compress tightly through T type bearing 6, valve plate 4 and transmission shaft 7 install in valve body 1 chamber through parallel key 16, and adopt cylinder end hexagon bolt 17 to carry out radial positioning, the lower extreme of valve plate 4 is equipped with sealing ring 2 and clamping ring 3 in proper order, be equipped with C type becket 22 between sealing ring 2 and valve plate 4, the built-in seal structure of energizing spring 23 of C type becket 22; a radial clearance is formed between the sealing ring 2 and the valve plate 4; the outer part of the valve body 1 is provided with a heat preservation jacket 5, the inner part of the heat preservation jacket 5 flows through a high-temperature steam cycle, the upper cover 8 is provided with an electric tracing band 9, and the electric tracing band 9 heats and preserves the temperature of the inner cavity of the valve body 1 and the stuffing box.
Preferably, the flow passage in the valve body 1 adopts a Venturi structure; residual media in the valve are automatically discharged, and the phenomenon that accumulated liquid in a flow passage is remained to be frozen and blocked to cause internal leakage of the valve body is prevented.
Preferably, a metal tooth-shaped gasket 18 is arranged between the valve body 1 and the upper cover 8, and the metal tooth-shaped gasket 18 and the lip-shaped welding double seal; the metal tooth-shaped gasket 18 adopts lip-shaped welding double sealing, so that the leakage risk of the valve is reduced, and the sealing performance of the valve is improved.
Preferably, a step shaft is arranged in the middle of the transmission shaft 7, a limiting component 19 and a plurality of plane bearings 20 are arranged on the upper surface and the lower surface of the step shaft, and the step shaft and the valve body 1 are positioned through an upper cover 8; as the transmission shaft 7 is positioned and supported, the torque of the valve is effectively reduced.
Preferably, a check washer 25 is arranged between the valve plate 4 and the pressing ring 3, a disc spring 24 is arranged at the bottom of the threaded hole, and the pressing ring 3 is fastened through a socket head cap screw 26; effectively prevent the valve internal leakage caused by material deformation due to temperature alternation.
Preferably, the end parts of the valve body 1 and the upper cover 8 both adopt packing structures, each packing structure comprises a packing 10, a packing gland 11 and a packing pressure plate 12, the packing 10 is arranged in the packing box of the upper cover 8, the upper end of the upper cover 8 is provided with the packing gland 11, the packing pressure plate 12 is arranged on the packing gland 11 and is fixed through the packing gland 11, the packing pressure plate 12, a stud 13 and a nut 14.
Preferably, the filler 10 is high temperature resistant mica or ceramic material.
Preferably, the contact part of the transmission shaft 7 and the T-shaped bearing 6 is coated with STE alloy in a surfacing mode; the surface hardness and the wear resistance of the transmission shaft under the high-temperature working condition are improved.
Preferably, an anti-seizure agent is arranged between the transmission shaft 7 and the bearing 27, so that a protective film is formed between the transmission shaft and the plane bearing 20; can effectively prevent that transmission shaft and bearing warp under the high temperature operating mode and lead to the jam.
The working process is as follows:
adopt flat key 16 to be connected the transmission through transmission shaft 7 and valve plate 4, set up the step axle in the middle of the transmission shaft 7, and increase spacing subassembly 19 and plane bearing 20 below the step is epaxial, it rotates to do according to rotatory transmission shaft 7 to drive valve plate 4 simultaneously and opens and close, valve plate 4 is rotatory around the axis, do flow control through rotary valve plate 4, anticlockwise for the valve opening direction clockwise for the valve closing direction, high temperature fused salt medium passes through the valve through the runner, set up dustproof packing 21 in the upper and lower shaft hole of valve body 1, prevent inside the granule medium gets into the shaft hole.
When the valve is closed, residual media in the valve are automatically discharged through the inclined plane of the flow channel of the Venturi structure; under the low temperature state, the inside of the heat-insulating jacket 5 circularly flows through high-temperature steam, and an electric tracing band 9 is arranged outside the upper cover 8 and the stuffing box of the valve body 1 to heat and insulate the inner cavity of the valve body 1 and the stuffing box, so that the valve is ensured to keep a good working state in the molten salt device for a long time, and the molten salt device is ensured to safely and stably operate.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A sealing butterfly valve suitable for a molten salt device comprises a valve body (1), wherein an upper cover (8) is arranged on the valve body (1), a transmission shaft (7) is arranged inside the upper cover (8) and the valve body (1), and the sealing butterfly valve is characterized in that a dustproof packing (21) is arranged in a shaft hole of the valve body (1) and is tightly pressed through a T-shaped bearing (6), a valve plate (4) and the transmission shaft (7) are installed in a cavity of the valve body (1) through a flat key (16) and are radially positioned through a cylindrical end hexagon bolt (17), a sealing ring (2) and a pressing ring (3) are sequentially arranged at the lower end of the valve plate (4), a C-shaped metal ring (22) is arranged between the sealing ring (2) and the valve plate (4), and a sealing structure of a spring (23) is arranged in the C-shaped metal ring (22); a radial clearance is formed between the sealing ring (2) and the valve plate (4); the valve body (1) is externally provided with a heat-insulating jacket (5), the heat-insulating jacket (5) flows circularly through high-temperature steam, the upper cover (8) is provided with an electric tracing band (9), and the electric tracing band (9) heats and insulates the inner cavity of the valve body (1) and the packing box.
2. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: the inner flow passage of the valve body (1) adopts a Venturi structure.
3. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: a metal tooth-shaped gasket (18) is arranged between the valve body (1) and the upper cover (8), and the metal tooth-shaped gasket (18) and the lip-shaped welding double seal structure is adopted.
4. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: the valve is characterized in that a step shaft is arranged in the middle of the transmission shaft (7), a limiting component (19) and a plurality of plane bearings (20) are arranged on the upper surface and the lower surface of the step shaft, and the step shaft is positioned with the valve body (1) through an upper cover (8).
5. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: a check gasket (25) is arranged between the valve plate (4) and the pressing ring (3), a disc spring (24) is arranged at the bottom of the threaded hole, and the pressing ring (3) is fastened through an inner hexagon screw (26).
6. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: the packing structure is characterized in that the end parts of the valve body (1) and the upper cover (8) are respectively provided with a packing structure, the packing structure comprises packing (10), a packing gland (11) and a packing pressing plate (12), the packing (10) is arranged in the packing box of the upper cover (8), the upper end of the upper cover (8) is provided with the packing gland (11), the packing pressing plate (12) is arranged on the packing gland (11), and the valve body is fixed through the packing gland (11), the packing pressing plate (12), the stud (13) and the nut (14).
7. A sealed butterfly valve suitable for use in a molten salt device as claimed in claim 6, wherein: the filler (10) is made of high-temperature-resistant mica or ceramic material.
8. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: and the contact part of the transmission shaft (7) and the T-shaped bearing (6) is subjected to surface overlaying STE alloy.
9. A sealed butterfly valve suitable for use in a molten salt apparatus as claimed in claim 1, wherein: an anti-seizure agent is arranged between the transmission shaft (7) and the bearing (27), so that a protective film is formed between the transmission shaft and the plane bearing (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220867676.0U CN217440806U (en) | 2022-04-14 | 2022-04-14 | Sealed butterfly valve suitable for fused salt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220867676.0U CN217440806U (en) | 2022-04-14 | 2022-04-14 | Sealed butterfly valve suitable for fused salt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217440806U true CN217440806U (en) | 2022-09-16 |
Family
ID=83217504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220867676.0U Active CN217440806U (en) | 2022-04-14 | 2022-04-14 | Sealed butterfly valve suitable for fused salt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217440806U (en) |
-
2022
- 2022-04-14 CN CN202220867676.0U patent/CN217440806U/en active Active
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