CN114476400A - High-temperature-resistant and corrosion-resistant molten salt control device - Google Patents
High-temperature-resistant and corrosion-resistant molten salt control device Download PDFInfo
- Publication number
- CN114476400A CN114476400A CN202011166775.8A CN202011166775A CN114476400A CN 114476400 A CN114476400 A CN 114476400A CN 202011166775 A CN202011166775 A CN 202011166775A CN 114476400 A CN114476400 A CN 114476400A
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- valve
- cover
- molten salt
- rod
- pulley
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- 150000003839 salts Chemical class 0.000 title claims abstract description 59
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 230000007797 corrosion Effects 0.000 title claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 22
- 238000010586 diagram Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/744—Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a high-temperature-resistant and corrosion-resistant molten salt control device, which comprises a molten salt storage tank, a tank cover, a valve cover, a first pulley bracket, a first pulley, a metal rope, a heat insulation pad, a mounting frame, a second pulley bracket, a sealing pad, a valve rod, a heating and heat insulation device, a tank body, a balancing weight, a stepping motor push rod and a valve seat, wherein the tank cover is arranged on the tank body; the invention has the beneficial effects that: (1) the valve mainly comprises a valve rod, a valve seat and a valve cover. The opening degree of the valve is adjusted by adopting the stepping motor push rod and the metal rope which are arranged outside, the valve is simple in structure, and the adjustment is stable and reliable. The problems of valve failure caused by the fact that an actuating mechanism is located in a heat radiation area, insufficient space caused by integration of the whole melting system and the like can be solved. (2) The valve has few parts in contact with the molten salt, is made of high-temperature corrosion resistant metal materials, and can effectively solve the problem of valve failure caused by corrosion of valve parts.
Description
Technical Field
The invention belongs to a chemical industry, metallurgy and high-temperature molten salt flow control device, and particularly relates to a high-temperature-resistant and corrosion-resistant molten salt control device.
Background
The preparation of the metallic lithium is mainly carried out by adopting a molten salt electrolysis method. In order to ensure the stable operation of electrolysis, lithium chloride needs to be uniformly, continuously and stably added into the electrolytic cell. The lithium chloride is converted into a molten state and added into the electrolytic cell, so that the automation of charging is easy to realize, and the fluctuation of the temperature of the electrolytic cell is small, thereby being an effective way for realizing the purpose. Lithium chloride is crystalline in powder form at normal temperature and has no fluidity. When heated to 614 ℃ or higher, lithium chloride becomes molten and has fluidity. In general, the temperature of lithium chloride in the molten state is 650 ℃ or higher. Molten lithium chloride has strong corrosivity, and most metals cannot resist the corrosion of chloride ions at present. When the temperature is lower than 614 ℃, the molten lithium chloride is quickly condensed into crystals to block pipelines and valves, and parts such as the valve core, the valve body and the like are adhered together. In addition, the lithium chloride in a molten state has a high temperature, and the valve seal is easy to fail due to expansion caused by heat and contraction caused by cold. At present, no good method exists for controlling the flow of the lithium chloride in the molten state. The common valve is easy to be corroded by chloride ions, and the valve core is easy to be bonded by lithium chloride crystals, so that the valve core cannot rotate and the flow cannot be adjusted.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant corrosion-resistant molten salt control device, which can realize adjustable and controllable flow of molten lithium chloride and solve the problems of valve core adhesion, valve pipe blockage, sealing failure and the like.
The technical scheme of the invention is as follows: a high-temperature-resistant and corrosion-resistant molten salt control device comprises a molten salt storage tank, a tank cover, a valve cover, a first pulley support, a first pulley, a metal rope, a heat insulation pad, a mounting frame, a second pulley support, a sealing pad, a valve rod, a heating and heat-insulating device, a tank body, a balancing weight, a stepping motor push rod and a valve seat;
cover and jar body coupling, the valve gap passes through the bolt and is connected with the cover, first pulley support fixes on the cover, first pulley is installed on first pulley support, the metal rope both ends are fixed respectively on valve rod and step motor push rod, the heat insulating mattress is installed on the cover, the mounting bracket is fixed on the cover, the second pulley is fixed on second pulley support, second pulley support fixes on the mounting bracket, sealed pad is installed between the cover and the jar body, the valve rod is installed between valve gap and disk seat, heating heat preservation device sets up around the holding vessel, the balancing weight is installed on the step of valve rod, the step motor push rod is fixed on the mounting bracket, the disk seat is installed and is welded at the storage tank bottom and the jar body.
Fused salt holding vessel include that the structure is a cylindrical jar body, the bottom is the inverted cone bodily form, is provided with the valve seat hole in bottom central point, jar body and cover pass through bolted connection, be provided with sealed the pad between jar body and the cover, the intermediate position of cover is opened has the valve cap hole, still is provided with the feed inlet on the cover.
The valve rod comprises a rod head, a valve core, a straight rod, a rod tail and a step, wherein the rod head is arranged at the lower end of a cone, the valve core is in a cone shape, the maximum diameter of the valve core is larger than the diameter of the straight rod, the step is formed at the joint of the upper part of the valve core and the straight rod, the straight rod is used for transmitting power to realize the sealing of the valve core, and the rod tail is arranged at the last part of the valve rod.
The valve seat is installed in a valve seat hole at the lower end of the molten salt storage tank and is connected with the tank body of the molten salt storage tank in a welding mode.
The uppermost end of the valve seat is a chamfer, the sealing surface plays a sealing role, and the conical surface is a transition part.
The valve cover is arranged in a valve cover hole of the molten salt storage tank.
The invention has the beneficial effects that: (1) the valve mainly comprises a valve rod, a valve seat and a valve cover. The opening degree of the valve is adjusted by adopting the stepping motor push rod and the metal rope which are arranged outside, the valve is simple in structure, and the adjustment is stable and reliable. The problems of valve failure caused by the fact that an actuating mechanism is located in a heat radiation area, insufficient space caused by integration of the whole melting system and the like can be solved. (2) The valve has few parts in contact with the molten salt, is made of high-temperature corrosion resistant metal materials, and can effectively solve the problem of valve failure caused by corrosion of valve parts.
Drawings
FIG. 1 is a schematic structural diagram of a molten salt control device with high temperature resistance and corrosion resistance provided by the invention;
FIG. 2 is a schematic diagram of a molten salt storage tank;
FIG. 3 is a schematic view of a valve stem configuration;
FIG. 4 is a schematic view of a valve seat structure;
fig. 5 is a schematic diagram of the valve cover structure.
In the figure: the automatic sealing device comprises a tank cover 1, a valve cover 2, a first pulley support 3, a first pulley 4, a metal rope 5, a heat insulation pad 6, a mounting frame 7, a second pulley 8, a second pulley support 9, a sealing pad 10, a valve rod 11, a heating and heat preservation device 12, a tank body 13, a balancing weight 14, a stepping motor push rod 15, a valve seat 16, a feeding hole 20, a valve cover hole 21, a valve seat hole 22, a bolt 23, a rod head 31, a valve core 32, a straight rod 33, a rod tail 34, a step 35, a chamfer 41, a sealing surface 42, a conical surface 43, a molten salt outlet 44, a bolt hole 51, a guide hole 52 and a end surface 53.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The bottom of a fused salt storage tank in the high-temperature-resistant and corrosion-resistant fused salt control device is designed into a cone shape, so that fused salt can flow to a valve seat conveniently. And (3) putting the high-temperature molten salt into a molten salt storage tank, heating and insulating the molten salt storage tank to keep the molten salt above the melting point temperature and prevent the solution from cooling and solidifying. And machining the valve core into a cone, and forming a sealing valve together with the valve seat. In order to ensure the sealing effect, a balancing weight is arranged on the valve rod. The balancing weight can increase the sealing force between the valve core and the valve seat. A through hole is arranged at the tail part of the valve rod. A metal cord is threaded into the hole. The metal rope is connected with a push rod on the stepping motor through a pulley device. By controlling the telescopic distance of the push rod of the stepping motor, the opening degree between the valve core and the valve seat can be controlled. The opening degree of the valve core and the valve seat is directly related to the flow of the fused salt flowing out of the valve. The larger the contraction distance of the stepping motor is, the larger the opening degree of the valve is, and the larger the flow of the molten salt is. Conversely, the smaller the flow rate of the molten salt.
As shown in fig. 1, a high temperature and corrosion resistant molten salt control apparatus includes: fused salt holding vessel, cover 1, valve gap 2, first pulley support 3, first pulley 4, metal rope 5, heat insulating mattress 6, mounting bracket 7, second pulley 8, second pulley support 9, sealed pad 10, valve rod 11, heating heat preservation device 12, jar body 13, balancing weight 14, step motor push rod 15 and disk seat 16.
Wherein, the tank cover 1 is connected with the tank body 13 through bolts, and the valve cover 2 is connected with the tank cover 1 through bolts 23. The valve stem 11 is guided. The first pulley bracket 3 is fixed to the tank cover 1 by a bolt. The first pulley 4 is mounted on the first pulley bracket 3. Two ends of the metal rope 5 are respectively fixed on the valve rod 11 and the stepping motor push rod 15. The movement is realized through the pulleys 1 and 2. The heat insulating pad 6 is mounted on the can lid 1. The mounting bracket 7 is fixed on the tank cover 1 through bolts. The second pulley 8 is fixed to a second pulley bracket 9. The second pulley bracket 9 is fixed to the mounting bracket 7 by bolts, and the gasket 10 is installed between the cover 1 and the body 13. The valve stem 11 is mounted between the bonnet 3 and the valve seat 16. The heating and heat-insulating device 12 is arranged around the storage tank to heat and insulate the storage tank. The can body 13 is connected to the can lid 1 by bolts. The weight 14 is mounted on a step of the valve stem 11. The step motor push rod 15 is fixed on the mounting frame 7. The valve seat 16 is mounted at the bottom of the tank and is welded to the tank 13.
As shown in fig. 2, the main function of the molten salt storage tank is to store high-temperature molten salt. The fused salt holding vessel is a cylindrical jar body 13 including the structure, and the bottom is the back taper, puts at bottom central point and is provided with valve seat hole 22, and jar body 13 passes through bolt 23 with cover 1 to be connected, is provided with sealed pad 10 between jar body 13 and cover 1, and the intermediate position of cover 1 is opened has valve cover hole 21, still is provided with feed inlet 20 on the cover 1. Feed port 20 is the passage of high temperature molten salt into the holding tank. The bonnet aperture 21 is used to mount the bonnet. The gasket 10 has an annular structure and is disposed between the can lid 1 and the can body 13 on the flange surface of the upper portion of the can body 13. The bolt is connected with the valve cover and the valve body.
As shown in fig. 3, the main function of the valve rod 11 is to realize sealing of high-temperature molten salt by matching with a valve seat. The valve stem 11 comprises a stem head 31, a valve core 32, a straight rod 33, a stem tail 34 and a step 35.
The club head 31 is at the lower end of the cone 32 and mainly plays a guiding role. The valve core 32 is in a conical shape and is matched with a valve seat sealing surface to seal molten salt. The maximum diameter of the valve core 32 is larger than that of the straight rod 33, and a step 35 is formed at the joint of the upper part of the valve core 32 and the straight rod. The step 35 serves to position the weight. The straight rod 33 is used for transmitting power to realize the sealing of the valve core 32. At the final part of the valve stem 11 is a 34 stem tail. A small hole is made in the shank 34 for fixing a metal cord.
As shown in fig. 4, the internal structure of the valve seat 16 is a cone, and the cone and the valve core of the valve rod jointly realize the opening and closing functions of the valve, and the structure is shown in the following figure. The valve seat 16 is arranged in a valve seat hole 22 at the lower end of the molten salt storage tank and is connected with the tank body 13 of the molten salt storage tank in a welding mode. The uppermost end of the valve seat 16 is chamfered 41, which is mainly used to guide the valve rod so that the valve rod can accurately enter the valve seat. The sealing surface 42 is sealing and cooperates with the valve element. The tapered surface 43 is a transition portion. The molten salt flows out from the molten salt outlet 44 through the conical surface. The interior of the valve seat is designed into a structure with a small upper part and a large lower part, so that the fused salt is prevented from being accumulated and condensed inside the valve seat.
As shown in fig. 5, the valve cover 2 is used for guiding the valve rod, so that the valve rod can realize sealing of molten salt through the guide hole. The valve cover 2 is arranged in a valve cover hole of the fused salt storage tank. Is connected to the tank cover through bolt holes 51. Wherein the end surface 53 is placed on the valve cap 2. The valve stem passes through the pilot orifice 52 into the molten salt storage tank.
The working process of the invention is as follows:
the operation process comprises the following steps:
(1) when the heating and heat-preserving device is used, the valve is kept in an opening state, and the heating and heat-preserving device is started.
(2) And when the temperature in the storage tank reaches a set value, starting the stepping motor. The push rod of the stepping motor moves to rotate the pulley and close the valve.
(3) Molten salt in a molten state is put into the storage tank body from the feed inlet.
(4) According to the demand of electrolysis, the valve rod is moved up and down by controlling the telescopic distance of the push rod of the stepping motor, so that the opening of the valve is adjusted.
The device simple structure, and the material is high temperature corrosion resistance metal material entirely, can effectively solve the problem that leads to the valve inefficacy because of the valve part corrodes, and the aperture regulation of valve is realized because of the step motor push rod and the metal rope that adopt the outside to set up in addition, adjusts reliable and stable, can solve actuating mechanism because of being located the not enough a great deal of problems in space that the integration of the valve failure that the heat radiation region caused and whole melting system appears.
Claims (7)
1. The utility model provides a high temperature resistant, corrosion-resistant fused salt controlling means which characterized in that: the molten salt storage tank comprises a molten salt storage tank body, a tank cover, a valve cover, a first pulley bracket, a first pulley, a metal rope, a heat insulation pad, a mounting frame, a second pulley bracket, a sealing pad, a valve rod, a heating and heat insulation device, a tank body, a balancing weight, a stepping motor push rod and a valve seat;
cover and jar body coupling, the valve gap passes through the bolt and is connected with the cover, first pulley support is fixed on the cover, first pulley is installed on first pulley support, the metal rope both ends are fixed respectively on valve rod and step motor push rod, the heat insulating mattress is installed on the cover, the mounting bracket is fixed on the cover, the second pulley is fixed on second pulley support, second pulley support is fixed on the mounting bracket, sealed pad is installed between the cover and the jar body, the valve rod is installed between valve gap and disk seat, heating heat preservation device sets up around the holding vessel, the balancing weight is installed on the step of valve rod, the step motor push rod is fixed on the mounting bracket, the disk seat is installed and is welded at the storage tank bottom and the jar body.
2. The high temperature and corrosion resistant molten salt control device of claim 1, wherein: fused salt holding vessel include that the structure is a cylindrical jar body, the bottom is the inverted cone bodily form, is provided with the valve seat hole in bottom central point, jar body and cover pass through bolted connection, be provided with sealed the pad between jar body and the cover, the intermediate position of cover is opened there is the valve cap hole, still is provided with the feed inlet on the cover.
3. The high temperature and corrosion resistant molten salt control device of claim 1, wherein: the valve rod comprises a rod head, a valve core, a straight rod, a rod tail and a step, wherein the rod head is arranged at the lower end of a cone, the valve core is in a cone shape, the maximum diameter of the valve core is larger than the diameter of the straight rod, the step is formed at the joint of the upper part of the valve core and the straight rod, the straight rod is used for transmitting power to realize the sealing of the valve core, and the rod tail is arranged at the last part of the valve rod.
4. The high temperature and corrosion resistant molten salt control device of claim 1, wherein: the valve seat is arranged in a valve seat hole at the lower end of the molten salt storage tank.
5. The high temperature and corrosion resistant molten salt control device of claim 1, wherein: and the valve seat is welded with the tank body of the molten salt storage tank.
6. The high temperature and corrosion resistant molten salt control device of claim 1, wherein: the uppermost end of the valve seat is a chamfer, the sealing surface plays a sealing role, and the conical surface is a transition part.
7. A high temperature resistant, corrosion resistant molten salt control apparatus as claimed in claim 1, wherein: the valve cover is arranged in a valve cover hole of the molten salt storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166775.8A CN114476400A (en) | 2020-10-27 | 2020-10-27 | High-temperature-resistant and corrosion-resistant molten salt control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166775.8A CN114476400A (en) | 2020-10-27 | 2020-10-27 | High-temperature-resistant and corrosion-resistant molten salt control device |
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| CN114476400A true CN114476400A (en) | 2022-05-13 |
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| CN202011166775.8A Pending CN114476400A (en) | 2020-10-27 | 2020-10-27 | High-temperature-resistant and corrosion-resistant molten salt control device |
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