阅读说明：本技术 一种熔盐缓蚀剂投放装置及投放方法 (Molten salt corrosion inhibitor feeding device and method ) 是由 朱晓林 章晓敏 宓霄凌 于 2020-07-27 设计创作，主要内容包括：本发明公开了一种熔盐缓蚀剂投放装置,包括：料仓,储有缓蚀剂；混合仓,设有工质进口和工质出口且通有工质；第一投料通道,设于所述料仓和所述混合仓之间且用于连通两者,所述缓蚀剂通过所述第一投料通道进入所述混合仓与所述工质混合；第一封闭组件,用于开启或关闭所述第一投料通道；旋转组件,设于所述混合仓,所述工质流动驱动所述旋转组件旋转；传动组件,连接所述旋转组件和第一封闭组件；其中,所述旋转组件通过所述传动组件传动使所述第一封闭组件旋转,所述第一封闭组件旋转时周期性开启或关闭所述第一投料通道。该装置可在工质工作状态下实时添加缓蚀剂,保证系统长期运行的安全性。(The invention discloses a molten salt corrosion inhibitor putting device, which comprises: a storage bin storing a corrosion inhibitor; the mixing bin is provided with a working medium inlet and a working medium outlet and is communicated with a working medium; the first feeding channel is arranged between the stock bin and the mixing bin and is used for communicating the stock bin and the mixing bin, and the corrosion inhibitor enters the mixing bin through the first feeding channel and is mixed with the working medium; the first sealing component is used for opening or closing the first feeding channel; the rotating assembly is arranged in the mixing bin, and the working medium flows to drive the rotating assembly to rotate; the transmission assembly is connected with the rotating assembly and the first closing assembly; the rotating assembly drives the first sealing assembly to rotate through the transmission assembly, and the first feeding channel is opened or closed periodically when the first sealing assembly rotates. The device can add the corrosion inhibitor in real time under the working state of the working medium, and the safety of long-term operation of the system is ensured.)

1. The utility model provides a molten salt corrosion inhibitor input device which characterized in that includes:

a storage bin (2) which stores corrosion inhibitor;

the mixing bin (3) is provided with a working medium inlet (4) and a working medium outlet (5) and is communicated with a working medium;

the first feeding channel is arranged between the stock bin (2) and the mixing bin (3) and is used for communicating the stock bin with the mixing bin (3), and the corrosion inhibitor enters the mixing bin (3) through the first feeding channel and is mixed with the working medium;

the first sealing component is used for opening or closing the first feeding channel;

the rotating assembly is arranged in the mixing bin (3), and the working medium flows to drive the rotating assembly to rotate;

a drive assembly connecting the rotating assembly and the first closure assembly;

the rotating assembly drives the first sealing assembly to rotate through the transmission assembly, and the first feeding channel is opened or closed periodically when the first sealing assembly rotates.

2. The molten salt corrosion inhibitor delivery device of claim 1, comprising:

the separation bin (6) is arranged between the stock bin (2) and the mixing bin (3), and the first feeding channel is arranged between the stock bin (2) and the separation bin (6) and is used for communicating the stock bin (2) and the separation bin (6);

the second feeding channel is arranged between the isolation bin (6) and the mixing bin (3) and is used for communicating the isolation bin and the mixing bin;

the second sealing assembly is used for opening or closing the second feeding channel, and when the second feeding channel is opened, the first feeding channel is closed.

3. The molten salt corrosion inhibitor delivery device according to claim 2, characterized by comprising a pressurizing assembly for inflating gas into the isolation bin (6).

4. The molten salt corrosion inhibitor delivery device of claim 3, comprising:

the inflation channel is arranged in the transmission assembly, the transmission assembly penetrates through the isolation bin (6) and is provided with an air outlet (8) for communicating the inflation channel with the isolation bin (6), one end of the inflation channel is communicated with the isolation bin (6), and the other end of the inflation channel is communicated with an air outlet part of the pressurizing assembly.

5. The molten salt corrosion inhibitor feeding device according to claim 4, characterized by comprising a third sealing component fixedly arranged in the isolation bin (6), wherein the transmission component penetrates through and is rotatably connected to the third sealing component, the third sealing component is provided with a connecting hole (10) for communicating the air outlet hole (8) with the isolation bin (6), and the air outlet hole (8) and the connecting hole (10) are periodically overlapped or dislocated when the transmission component rotates, so that the air inflation channel is periodically communicated with the isolation bin (6).

6. The molten salt corrosion inhibitor delivery apparatus of claim 3, wherein the pressurizing assembly is a rotary gas compressor, and the transmission assembly is connected to a rotor of the rotary gas compressor.

7. The molten salt corrosion inhibitor delivery device of claim 2, wherein the second sealing assembly is connected with the transmission assembly, the transmission assembly drives the second sealing assembly to rotate, and the second sealing assembly periodically opens or closes the second feeding channel when rotating.

8. The molten salt corrosion inhibitor delivery device of claim 7, characterized in that:

the first sealing component is a first rotating component (16), the first rotating component (16) is arranged at one end of the storage bin (2), is sleeved and fixedly connected with the transmission component and is driven by the transmission component to rotate, and a first material leaking groove (17) is formed in the first rotating component (16);

a first fixing piece (18) is arranged on one side of the first rotating piece (16), the first fixing piece (18) is fixedly connected to one end of the storage bin (2), a second material leaking groove (19) is formed in the first fixing piece (18), and the first material leaking groove (17) and the second material leaking groove (19) are matched to form a first feeding channel;

when the first rotating member (16) rotates, the first material leaking groove (17) and the second material leaking groove (19) are periodically overlapped or staggered so as to enable the first feeding channel to be opened or closed.

9. The molten salt corrosion inhibitor delivery device of claim 8, characterized in that:

the second sealing component is a second rotating component (21), the second rotating component (21) is arranged at one end, close to the mixing bin (3), of the isolation bin (6) and is sleeved and fixedly connected with the transmission component, a third material leakage groove (22) is formed in the second rotating component (21), and the transmission component drives the second rotating component (21) to rotate;

a second fixing piece (23) is arranged on one side of the second rotating piece (21), the second fixing piece (23) is fixedly connected to one end, close to the mixing bin (3), of the isolation bin (6), a fourth material leaking groove (24) is formed in the second fixing piece (23), the third material leaking groove (22) and the fourth material leaking groove (24) are matched to form a second material feeding channel, and the second rotating piece (21) rotates relative to the second fixing piece (23);

when the second rotating piece (21) rotates, the third material leaking groove (22) and the fourth material leaking groove (24) are periodically overlapped or staggered so that the second feeding channel is opened or closed, and when the first material leaking groove (17) and the second material leaking groove (19) are overlapped, the third material leaking groove (22) and the fourth material leaking groove (24) are not overlapped.

10. The molten salt corrosion inhibitor feeding device according to claim 8, wherein the first fixing member (18) is arranged on one side of the first rotating member (16) far away from the storage bin (2), a plurality of first scraping blades (20) are fixedly arranged on one end face, facing the storage bin (2), of the first rotating member (16), and when the first rotating member (16) rotates, the first scraping blades (20) scrape the corrosion inhibitor contacted with the first rotating member away.

11. The molten salt corrosion inhibitor feeding device according to claim 9, wherein a plurality of second scraping blades (25) are arranged in the isolation bin (6), the second scraping blades (25) are arranged between the second rotating member (21) and the first fixing member (18), one end of each second scraping blade (25) is fixedly connected to the inner wall of the isolation bin (6), and the second rotating member (21) is matched with the second scraping blades (25) to block the corrosion inhibitor into the third material leaking groove (22) when rotating.

12. The molten salt corrosion inhibitor feeding device according to claim 6, wherein a gas source (15) is connected to a gas inlet (13) of the rotary gas compressor.

13. The molten salt corrosion inhibitor delivery apparatus according to claim 1, comprising a brake (27) for braking the transmission assembly.

14. The molten salt corrosion inhibitor delivery apparatus of claim 1, wherein the transmission assembly is a rotating shaft (7).

15. The molten salt corrosion inhibitor delivery apparatus of claim 1, wherein the rotating assembly is an impeller (26).

16. A molten salt corrosion inhibitor delivery method comprising the molten salt corrosion inhibitor delivery device of claim 3, characterized by comprising:

step 1: the second feeding channel and the pressurizing assembly are closed, the first feeding channel is opened, and the corrosion inhibitor enters the isolation bin (6);

step 2: closing the first feeding channel, and opening the pressurizing assembly to pressurize the isolation bin (6);

step 3: the second feeding channel is opened, and the corrosion inhibitor is carried into the mixing bin (3) by the gas.

17. The method of molten salt corrosion inhibitor delivery according to claim 16, wherein the first closing assembly of the first delivery channel, the second closing assembly of the second delivery channel, and the pressurizing assembly are all driven by the rotating assembly.

Technical Field

The invention belongs to the technical field of molten salt heat storage, and particularly relates to a molten salt corrosion inhibitor feeding device and a molten salt corrosion inhibitor feeding method.

Background

With the development of solar photo-thermal power generation technology, in order to achieve higher thermoelectric conversion efficiency, the requirement on heat storage temperature is higher and higher, and high-temperature molten salt (chlorine salt, carbonate and the like) becomes an ideal heat storage and heat exchange working medium in third-generation photo-thermal power generation technology, but has stronger corrosivity to alloy structures such as heat storage tanks, pipelines and the like at high temperature compared with the existing solar salt (nitrate).

Generally, corrosive impurities (oxygen, water and the like) in the high-temperature molten salt are removed by technologies such as electrolytic purification, pre-melting, pre-mixing corrosion inhibitor and the like, and the corrosivity of the high-temperature molten salt is reduced, so that the high-temperature molten salt is put into a heat storage system to operate.

However, in the long-term heat storage and heat exchange operation process, corrosive impurities are mixed into the high-temperature molten salt inevitably, so that the corrosivity of the high-temperature molten salt is increased, and the long-term reliability of a heat storage and heat exchange system is seriously damaged.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a molten salt corrosion inhibitor feeding device and a molten salt corrosion inhibitor feeding method.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a molten salt corrosion inhibitor delivery device comprises:

a storage bin storing a corrosion inhibitor;

the mixing bin is provided with a working medium inlet and a working medium outlet and is communicated with a working medium;

the first feeding channel is arranged between the stock bin and the mixing bin and is used for communicating the stock bin and the mixing bin, and the corrosion inhibitor enters the mixing bin through the first feeding channel and is mixed with the working medium;

the first sealing component is used for opening or closing the first feeding channel;

the rotating assembly is arranged in the mixing bin, and the working medium flows to drive the rotating assembly to rotate;

a drive assembly connecting the rotating assembly and the first closure assembly;

the rotating assembly drives the first sealing assembly to rotate through the transmission assembly, and the first feeding channel is opened or closed periodically when the first sealing assembly rotates.

According to an embodiment of the present invention, the method includes:

the separation bin is arranged between the stock bin and the mixing bin, and the first feeding channel is arranged between the stock bin and the separation bin and is used for communicating the stock bin and the separation bin;

the second feeding channel is arranged between the isolation bin and the mixing bin and is used for communicating the isolation bin and the mixing bin;

the second sealing assembly is used for opening or closing the second feeding channel, and when the second feeding channel is opened, the first feeding channel is closed.

According to one embodiment of the invention, the device comprises a pressurizing assembly used for inflating gas into the isolation bin.

According to an embodiment of the present invention, the method includes:

the transmission assembly penetrates through the isolation bin and is provided with an air outlet hole for communicating the inflation channel with the isolation bin, one end of the inflation channel is communicated with the isolation bin, and the other end of the inflation channel is communicated with an air outlet part of the pressurizing assembly.

According to an embodiment of the present invention, the device comprises a third sealing component fixedly arranged in the isolation bin, the transmission component penetrates through and is rotatably connected to the third sealing component, the third sealing component is provided with a connection hole for communicating the air outlet hole and the isolation bin, and the air outlet hole and the connection hole are periodically overlapped or dislocated when the transmission component rotates, so that the inflation channel is periodically communicated with the isolation bin.

According to an embodiment of the present invention, the pressurizing assembly is a rotary gas compressor, and the transmission assembly is connected to a rotor of the rotary gas compressor.

According to an embodiment of the present invention, the second sealing component is connected to the transmission component, the transmission component drives the second sealing component to rotate, and the second sealing component periodically opens or closes the second feeding channel when rotating.

According to an embodiment of the invention:

the first sealing assembly is a first rotating member, the first rotating member is arranged at one end of the storage bin, is sleeved and fixedly connected with the transmission assembly and is driven by the transmission assembly to rotate, and a first material leaking groove is formed in the first rotating member;

a first fixing piece is arranged on one side of the first rotating piece and fixedly connected to one end of the storage bin, a second material leaking groove is formed in the first fixing piece, and the first material leaking groove and the second material leaking groove are matched to form the first feeding channel;

when the first rotating piece rotates, the first material leaking groove and the second material leaking groove are periodically overlapped or staggered so that the first feeding channel is opened or closed.

According to an embodiment of the invention:

the second sealing component is a second rotating component, the second rotating component is arranged at one end, close to the mixing bin, of the isolation bin, and is sleeved and fixedly connected with the transmission component, the second rotating component is provided with a third material leaking groove, and the transmission component drives the second rotating component to rotate;

a second fixing piece is arranged on one side of the second rotating piece, the second fixing piece is fixedly connected to one end, close to the mixing bin, of the isolation bin, a fourth material leaking groove is formed in the second fixing piece, the third material leaking groove and the fourth material leaking groove are matched to form the second feeding channel, and the second rotating piece rotates relative to the second fixing piece;

when the second rotating member rotates, the third material leaking groove and the fourth material leaking groove are periodically overlapped or staggered so that the second feeding channel is opened or closed, and when the first material leaking groove and the second material leaking groove are overlapped, the third material leaking groove and the fourth material leaking groove are not overlapped.

According to an embodiment of the invention, the first fixing member is disposed on a side of the first rotating member away from the storage bin, and a plurality of first scraping blades are fixedly disposed on an end surface of the first rotating member facing the storage bin, and when the first rotating member rotates, the first scraping blades scrape the corrosion inhibitor contacting the first rotating member.

According to an embodiment of the invention, a plurality of second scraping blades are arranged in the isolation bin, the second scraping blades are arranged between the second rotating member and the first fixing member, one end of each second scraping blade is fixedly connected to the inner wall of the isolation bin, and the corrosion inhibitor is blocked into the third material leaking groove by matching with the second scraping blades when the second rotating member rotates.

According to an embodiment of the present invention, an air inlet of the rotary air compressor is connected to an air source.

According to an embodiment of the invention, a brake is included for braking the transmission assembly.

According to an embodiment of the present invention, the transmission assembly is a rotating shaft.

According to an embodiment of the invention, the rotating component is an impeller.

A molten salt corrosion inhibitor putting method comprises the molten salt corrosion inhibitor putting device, and comprises the following steps:

step 1: closing the second feeding channel and the pressurizing assembly, opening the first feeding channel, and allowing the corrosion inhibitor to enter the isolation bin;

step 2: closing the first feeding channel, and opening the pressurizing assembly to pressurize the isolation bin;

step 3: and opening the second feeding channel, and carrying the corrosion inhibitor into the mixing bin by the gas.

According to an embodiment of the invention, the first closing element of the first feeding channel, the second closing element of the second feeding channel and the pressing element are driven by the rotating element.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

(1) the embodiment of the invention is provided with a storage bin, a mixing bin, a first feeding channel, a first sealing component, a rotating component and a transmission component, wherein the rotating component is driven to rotate in the flowing process of a working medium, the transmission component drives the first sealing component to rotate, the first feeding channel is opened or closed periodically when the first sealing component rotates, and a corrosion inhibitor enters the mixing bin through the first feeding channel to be mixed with the working medium. That is to say, the flow kinetic energy through working medium itself drives the transmission assembly and rotates, has realized automatic and periodic throwing the material, and need not extra power, throws the material process working medium and can be in operating condition all the time, has guaranteed the security of the long-term operation of system. And the rotation rate of the first sealing assembly changes along with the change of the flow velocity of the working medium, so that the opening frequency of the first feeding channel changes along with the change of the flow velocity of the working medium, namely the feeding frequency and the feeding amount of the corrosion inhibitor correspond to the flow velocity of the working medium, and the dynamic matching of the corrosion inhibitor and the working medium is met.

(2) The embodiment of the invention is provided with an isolation bin, a second feeding channel and a second sealing component, wherein the first feeding channel and the second feeding channel are alternately opened or closed, the corrosion inhibitor firstly enters the isolation bin through the first feeding channel, then the first feeding channel is closed, the second feeding channel is opened, the corrosion inhibitor enters the mixing bin, and the working medium in the mixing bin cannot be subjected to reverse osmosis to the bin through the isolation bin.

(3) The embodiment of the invention is provided with the pressurizing assembly, the pressurizing assembly is used for introducing gas into the isolation bin to pressurize, then the corrosion inhibitor is blown into the mixing bin through the gas, the kinetic energy of the corrosion inhibitor is increased through the gas, so that the corrosion inhibitor is mixed with the working medium more uniformly, and the feeding is quicker and more efficient.

(4) In the embodiment of the invention, the inflation channel is arranged on the transmission assembly, and the pressurizing assembly inflates gas into the isolation bin through the inflation channel, so that the transmission assembly has a transmission function and also has a function of inflating the isolation bin, the integral structure is more compact, and the cost can be saved.

(5) In the embodiment of the invention, the air outlet and the connecting hole are periodically overlapped or staggered when the transmission assembly rotates, so that periodic inflation is realized, when the first feeding channel is opened, the connecting hole and the air outlet are not overlapped, and gas cannot enter so that the corrosion inhibitor can smoothly fall into the isolation bin.

(6) In the embodiment of the invention, the pressurizing assembly is a rotary gas compressor, and the rotary gas compressor is driven to work by the transmission assembly, so that the power source of the pressurizing assembly is also working medium.

(7) In the embodiment of the invention, the first rotating piece is fixedly provided with the plurality of first scraping blades, so that the corrosion inhibitor can be scraped and dispersed, and the condition that the corrosion inhibitor cannot fall into the isolation bin through the first feeding channel due to agglomeration caused by long-term stacking of the corrosion inhibitor is prevented.

(8) In the embodiment of the invention, when the second rotating member rotates, the corrosion inhibitor is blocked into the third material leaking groove by matching with the second scraping piece, and the second scraping piece can prevent the corrosion inhibitor from remaining.

(9) The embodiment of the invention is provided with the gas source which stores compressed gas, so that the rotary gas compressor can work more efficiently, the pressure of the gas entering the isolation bin can be increased, and the feeding effect is better.

(10) The embodiment of the invention is provided with the brake for braking the transmission assembly, and the transmission assembly can stop rotating when the corrosion inhibitor is not required to be put in, namely, the mixing bin can be always used as a section of circulation channel in the working process of the working medium, and when the corrosion inhibitor is not required to be added to the working medium, the working medium bypasses the mixing bin without being connected with another connecting pipeline, so that the operation is simpler and more convenient, and the cost is saved.

(11) In the embodiment of the invention, the rotating component is the impeller, and the impeller can drive the transmission component to rotate through the working medium and can also stir the working medium, so that the corrosion inhibitor and the working medium are mixed more uniformly.

(12) In the embodiment of the invention, the first sealing component for opening or closing the first feeding channel, the second sealing component for opening or closing the second feeding channel and the opening or closing pressurizing component are driven by the rotating component, so that feeding into the working medium and pressurizing into the isolation bin are driven by flowing working medium, the device does not need additional power input at all, and is more energy-saving.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:

FIG. 1 is an overall schematic diagram of a molten salt corrosion inhibitor delivery device according to the present invention;

FIG. 2 is a partial enlarged view of a molten salt corrosion inhibitor delivery device of the present invention;

FIG. 3 is a partial enlarged view of a screw compressor of the molten salt corrosion inhibitor feeding device of the invention;

FIG. 4 is a schematic view of a first rotating member of the molten salt corrosion inhibitor feeding device according to the present invention;

FIG. 5 is a schematic view of a first fixing member of the molten salt corrosion inhibitor feeding device according to the present invention;

FIG. 6 is a partial enlarged view of a shaft sleeve of the molten salt corrosion inhibitor feeding device of the invention;

FIG. 7 is a sectional view of a shaft sleeve and a rotating shaft of the molten salt corrosion inhibitor feeding device of the invention;

FIG. 8 is a schematic view of a second rotating member of the molten salt corrosion inhibitor feeding device according to the present invention;

FIG. 9 is a schematic view of a second fixing member of the molten salt corrosion inhibitor delivery device according to the present invention.

Description of reference numerals:

1: a mixing vessel; 2: a storage bin; 3: a mixing bin; 4: a working medium inlet; 5: a working medium outlet; 6: an isolation bin; 7: a rotating shaft; 8: an air outlet; 9: a shaft sleeve; 10: connecting holes; 11: a screw compressor; 12: an air outlet cavity; 13: an air inlet; 14: a screw; 15: a gas source; 16: a first rotating member; 17: a first material leaking groove; 18: a first fixing member; 19: a second material leaking groove; 20: a first blade; 21: a second rotating member; 22: a third material leaking groove; 23: a second fixing member; 24: a fourth material leaking groove; 25: a second wiper blade; 26: an impeller; 27: a brake; 28: a compressor air inlet; 29: a controller; 30: a feed inlet; 31: a sensor; 32: a rigid link.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 1 to 9, the core of the invention is to provide a molten salt corrosion inhibitor feeding device, which comprises a mixing container 1, a first feeding channel, a first sealing assembly, a rotating assembly and a transmission assembly, wherein the upper part of the mixing container 1 is a storage bin 2 and is stored with a corrosion inhibitor, the lower part of the mixing container is a mixing bin 3, the mixing bin 3 is provided with a working medium inlet 4 and a working medium outlet 5, a working medium enters the mixing bin 3 from the working medium inlet 4 and flows out from the working medium outlet 5, the rotating assembly is arranged in the mixing bin 3, the rotating assembly drives the rotating assembly to rotate in the flowing process of the working medium, the rotating assembly drives the first sealing assembly to rotate through the transmission assembly, the first feeding channel is periodically opened or closed when the first sealing assembly rotates, and the corrosion inhibitor enters the mixing bin 3 through the first feeding channel and is.

That is to say, the rotating component rotates to enable the first feeding channel to be opened or closed periodically, automatic and periodic feeding is achieved, the working medium is in a working state in the feeding process, and the safety of long-term operation of the system is guaranteed. And the flowing kinetic energy of the working medium is used as a power source, so that an additional power source is not needed, and the energy is saved. And the rotation rate of the first sealing assembly changes along with the change of the flow velocity of the working medium, so that the opening frequency of the first feeding channel changes along with the change of the flow velocity of the working medium, namely the feeding frequency and the feeding amount of the corrosion inhibitor correspond to the flow velocity of the working medium, and the dynamic matching of the corrosion inhibitor and the working medium is met.

Furthermore, the middle part of the mixing container 1 is provided with an isolation bin 6, the isolation bin 6 is arranged between the material bin 2 and the mixing bin 3, the corrosion inhibitor firstly enters the isolation bin 6, then the air pressure of the isolation bin 6 is increased through air, and then the corrosion inhibitor is blown into the mixing bin 3 through air, so that the corrosion inhibitor enters the mixing bin 3 at a certain speed, the corrosion inhibitor and the working medium are mixed more uniformly, and the feeding is more efficient. And the working medium in the mixing bin 3 can not be subjected to reverse osmosis to the bin 2 by high-pressure gas in the isolation bin 6.

The molten salt corrosion inhibitor feeding device of the invention is explained in detail as follows:

the mixing container 1 is a main body structure of the present invention, and is a variable diameter cylindrical structure, and the interior thereof is hollow, but may be other shapes in other embodiments, and is not limited herein.

The mixing container 1 is sequentially provided with a stock bin 2, an isolation bin 6 and a mixing bin 3 from top to bottom, and the lower end of the stock bin 2 and the upper end of the mixing bin 3 are respectively provided with a diameter contraction structure and are respectively connected with the upper end and the lower end of the isolation bin 6.

Specifically, the storage bin 2 is stored with a corrosion inhibitor for preventing the working medium from corroding the metal, in the embodiment, the working medium is molten salt, and the corrosion inhibitor is used for preventing the molten salt from corroding the metal in the molten salt heat storage system and the power generation system.

The upper end of the storage bin 2 is provided with a feeding hole 30 for feeding the corrosion inhibitor. The upper end of the storage bin 2 is also provided with a sensor 31 which has the capability of detecting the height, temperature, humidity and pressure of materials in the storage bin 2, so that the corrosion inhibitor can meet the use requirement.

One end of the mixing bin 3 is provided with a working medium inlet 4, the other end of the mixing bin is provided with a working medium outlet 5, the molten salt enters from the working medium inlet 4 and flows out of the working medium outlet 5, and the working medium inlet 4 is higher than the working medium outlet 5, so that the normal flow of the molten salt is ensured. And the mixing bin 3 is made of high temperature and corrosion resistant metal.

Drive assembly rotates to be connected in mixing vessel 1, and is concrete, and drive assembly is pivot 7 in this embodiment, and feed bin 2, separation storehouse 6 and mixing storehouse 3 are worn to locate by pivot 7, and 7 upper ends of pivot rotate to be connected in 2 tops of feed bin, and the lower extreme of pivot 7 is equipped with rotating assembly, and rotating assembly is located the fused salt, and the fused salt drives rotating assembly rotatory at the in-process that flows, and rotating assembly drives pivot 7 rotation.

The rotating assembly is the impeller 26 in the embodiment, the number of the impellers 26 is not limited, the impellers 26 and the rotating shaft 7 are both made of high-temperature-resistant and corrosion-resistant metal, two impellers 26 are arranged in the embodiment, the impellers 26 can make the impellers rotate by utilizing the flowing kinetic energy of the molten salt, the molten salt can be stirred, the molten salt and the corrosion inhibitor are mixed more uniformly, and the corrosion inhibitor can fully play a role. And working medium import 4 and pivot 7 are certain inclination, make fused salt can be better drive impeller 26 rotatory.

The first feeding channel is arranged between the stock bin 2 and the isolation bin 6 and is used for communicating the stock bin 2 and the isolation bin 6, the corrosion inhibitor enters the isolation bin 6 through the first feeding channel, the first sealing assembly is arranged between the stock bin 2 and the isolation bin 6 and is used for separating the stock bin 2 from the isolation bin 6, the rotating shaft 7 penetrates through and is connected to the first sealing assembly, specifically, the first sealing assembly is a first rotating piece 16 and further comprises a first fixing piece 18 which is adjacent to the first rotating piece 16 and is arranged in a closely attached mode, the first rotating piece 16 and the first fixing piece 18 are both discs and are all sleeved on the rotating shaft 7, and the first rotating piece 16 is located above the first fixing piece 18.

First rotating member 16 links firmly in pivot 7, and its periphery and the rotatory sealing connection of mixing container 1 inner wall, and concrete accessible rotary seal realizes, and is equipped with the first silo 17 that leaks that link up on first rotating member 16, sets up the first silo 17 that leaks of four rectangular shape circumference equipartitions in the present embodiment altogether, and radially offers along first rotating member 16.

The periphery of the first fixing part 18 is fixedly connected with the inner wall of the mixing container 1 and is connected with the rotating shaft 7 in a rotating and sealing mode, the rotating sealing ring can be rotated specifically, the first fixing part 18 is provided with a through second material leaking groove 19, the first fixing part 18 is provided with four second material leaking grooves 19 which are uniformly distributed in a strip shape, and the four second material leaking grooves are formed in the radial direction of the first fixing part 18.

The first hopper 17 and the second hopper 19 form a first feeding channel. The pivot 7 rotates and drives first rotating member 16 and rotates, and in rotatory in-process, first hourglass silo 17 and the cyclic coincidence of second hourglass silo 19 or dislocation, first hourglass silo 17 link up with second hourglass silo 19 during the coincidence and make first material channel of throwing open, and first hourglass silo 17 makes first material channel of throwing close with second hourglass silo 19 dislocation.

The upper end surface of the first rotating member 16 is further fixedly provided with a plurality of first scraping blades 20, the first scraping blades 20 are in a blade shape, the cross section of each first scraping blade is rectangular, in the embodiment, each first leaking groove 17 is provided with one first scraping blade 20 arranged along the length direction of the first scraping blade, and the first leaking groove 17 is positioned on one side lagging in the rotating direction of the first rotating member 16, so that the corrosion inhibitor can be smoothly blocked by the first scraping blades 20 and fall into the first leaking groove 17 when the first rotating member 16 rotates, and the corrosion inhibitor can be scraped away by the first scraping blades 20, and because the corrosion inhibitor is piled up for a long time, the corrosion inhibitor can not pass through the first leaking groove 17, and the corrosion inhibitor can be re-stirred into particles through the rotation of the first scraping blades 20, so that the corrosion inhibitor can pass through the first leaking groove 17 smoothly.

The second feeding channel is arranged between the separation bin 6 and the mixing bin 3 and is used for communicating the separation bin and the mixing bin, the corrosion inhibitor enters the mixing bin 3 through the second feeding channel, a second sealing assembly is further arranged between the separation bin 6 and the mixing bin 3 and used for separating the separation bin 6 and the mixing bin 3, the rotating shaft 7 penetrates through and is connected to the second sealing assembly, specifically, the second sealing assembly is a second rotating piece 21 and further comprises a second fixing piece 23 which is adjacent to and closely attached to the second rotating piece 21, the second rotating piece 21 and the second fixing piece 23 are both discs and are all sleeved on the rotating shaft 7, and the second rotating piece 21 is located above the second fixing piece 23.

The second rotating member 21 is fixedly connected to the rotating shaft 7, the circumferential surface of the second rotating member is connected with the inner wall of the mixing container 1 in a rotating and sealing manner, the second rotating member can be specifically realized through a rotating sealing ring, the second rotating member 21 is provided with a through third material leaking groove 22, the four third material leaking grooves 22 are formed in the second rotating member 21 in a common long strip shape and are circumferentially and uniformly distributed, and the second rotating member 21 is radially arranged.

The circumference of the second fixing member 23 is fixedly connected with the inner wall of the mixing container 1 and is connected with the rotating shaft 7 in a rotating and sealing manner, and the second fixing member 23 is provided with a through fourth material leaking groove 24, in this embodiment, the four material leaking grooves 24 are formed in the four strip-shaped circumference uniformly and are arranged in the radial direction of the second fixing member 23.

The third and fourth chute 22, 24 form a second feeding channel. The pivot 7 rotates and drives second rotating member 21 and rotates, and at rotatory in-process, the periodic coincidence of third hourglass silo 22 and fourth hourglass silo 24 or dislocation, third hourglass silo 22 and fourth hourglass silo 24 link up and make the second throw the material passageway and open during the coincidence, and the second is thrown the material passageway and is closed when third hourglass silo 22 and fourth hourglass silo 24 misplace.

A plurality of second scraping blades 25 are further arranged above the second rotating member 21, the second scraping blades 25 are blade-shaped, the cross sections of the second scraping blades 25 are rectangular, one ends of the second scraping blades 25 are fixedly connected to the inner wall of the mixing container 1 and are arranged to be close to the second rotating member 21, four second scraping blades 25 which are evenly distributed on the circumference are arranged in the embodiment, and an angle C is formed between the second scraping blades 25 and the initial position of the third material leaking groove 22. The second scraping blade 25 can scrape the corrosion inhibitor into the third material leaking groove 22 when the second rotating member 21 rotates, so that the corrosion inhibitor is prevented from remaining.

And in 7 a rotation cycles of pivot, when first throw the material passageway and open, the second is thrown the material passageway and is closed, specifically according to the first silo 17 that leaks of control, second silo 19 that leaks, the difference in angle between third silo 22 and the fourth silo 24 that leaks realizes, that is to say when pivot 7 drives the rotatory first silo 17 that makes of first rotating member 16 and the second silo 19 that leaks is coincided, third silo 22 and the fourth silo 24 that leaks misplace each other, in reverse when pivot 7 drives the rotatory third silo 22 that makes of second rotating member 21 and the fourth silo 24 that leaks is coincided, first silo 17 and the second silo 19 that leaks misplace each other.

Referring to fig. 4, 5, 8 and 9, the rotating shaft 7 is viewed as being in the initial position, the four first material leaking grooves 17 on the first rotating member 16 are distributed on the X axis and the Y axis, and the second material leaking groove 19 on the first fixing member 18 and the first material leaking groove 17 have an angle a. The four third material leaking grooves 22 on the second rotating member 21 are distributed on the X axis and the Y axis, the fourth material leaking groove 24 on the second fixing member 23 and the third material leaking groove 22 have an angle C, the angle a is smaller than the angle C, that is, when the rotating shaft 7 continues to rotate counterclockwise to drive the first rotating member 16 and the second rotating member 21 to rotate, the first material leaking groove 17 on the first rotating member 16 is firstly overlapped with the second material leaking groove 19, and at this time, the third material leaking groove 22 and the fourth material leaking groove 24 are dislocated; and then the rotation is carried out again, the third material leaking groove 22 and the fourth material leaking groove 24 are overlapped, and at the moment, the first material leaking groove 17 and the second material leaking groove 19 are staggered. That is, the first material leaking groove 17, the second material leaking groove 19, the third material leaking groove 22 and the fourth material leaking groove 24 are overlapped and staggered alternately.

The device also comprises a pressurizing assembly which is used for filling gas into the isolation bin 6, and the first feeding channel is closed when the gas is filled, so that the gas pressure in the isolation bin 6 is increased. When the second feeding channel is opened, the gas blows the corrosion inhibitor into the mixing bin 3, and the corrosion inhibitor is sprayed into the mixing bin 3 due to high pressure. Certainly, on the premise that the initial flow rate of the pneumatic gas is high and the requirement of the speed of the corrosion inhibitor entering the mixing bin 3 is met, the pressure boosting process of the isolation bin 6 can be omitted, the second feeding channel is opened while the gas is filled, and the corrosion inhibitor is directly brought into the mixing bin 3 by the gas. The corrosion inhibitor and the molten salt are mixed more uniformly through gas, and the feeding speed is higher and the efficiency is higher.

Specifically, the rotating shaft 7 is hollow to form an inflation channel, the pressurizing assembly introduces gas into the inflation channel of the rotating shaft 7, an air outlet hole 8 is formed in the side wall of the rotating shaft 7 located on the isolation bin 6, the rotating shaft 7 is sleeved and rotatably connected with a third sealing assembly, the third sealing assembly is provided with a connecting hole 10 used for communicating the air outlet hole 8 with the isolation bin 6, and the air outlet hole 8 and the connecting hole 10 are periodically overlapped or staggered when the rotating shaft 7 rotates. And the first feeding channel is closed when the air outlet hole 8 and the connecting hole 10 are superposed.

Specifically, the third sealing component is a shaft sleeve 9, the shaft sleeve 9 is fixedly disposed in the isolation bin 6, and in this embodiment, the third sealing component is fixedly connected to the lower end surface of the first fixing element 18, and may also be fixedly connected to the inner wall of the isolation bin 6 through a connecting structure. The rotating shaft 7 penetrates through and is rotatably connected to the shaft sleeve 9, a plurality of connecting holes 10 are formed in the side wall of the shaft sleeve 9, the connecting holes 10 are as high as the air outlet holes 8 in horizontal height, and the connecting holes 10 and the air outlet holes 8 can be coincided and communicated by rotating the rotating shaft 7 so as to fill air into the isolation bin 6. In the embodiment, four air outlet holes 8 and four connecting holes 10 are uniformly distributed on the circumference, and the diameter of each air outlet hole 8 is larger than that of each connecting hole 10, so that the flow rate of gas entering the isolation bin 6 is higher.

Referring to fig. 7, regarding fig. 7 as that the rotating shaft 7 is at an initial position, by controlling the angle B between the connecting hole 10 and the air outlet hole 8, the angle a is smaller than the angle B and smaller than the angle C, the first material leaking groove 17 and the second material leaking groove 19, the air outlet hole 8 and the connecting hole 10, and the third material leaking groove 22 and the fourth material leaking groove 24 are sequentially overlapped, so that the corrosion inhibitor firstly enters the separation cabin 6 through the first feeding channel, then the gas enters the separation cabin 6, and finally the second feeding channel is opened, so that the gas carrying the corrosion inhibitor enters the mixing cabin 3.

The pressurizing assembly is a rotary gas compressor, the rotary gas compressor is a screw compressor 11 in the embodiment, and is a single-screw compressor, the screw compressor 11 is arranged at the top of the storage bin 2, the gas outlet part of the screw compressor 11 is a gas outlet cavity 12, the rotating shaft 7 extends into the gas outlet cavity 12 of the screw compressor 11 and is rigidly connected with a screw 14 coaxially, the rotating shaft 7 rotates to drive the screw 14 to rotate so as to enable the screw compressor 11 to work for gas suction, a gas inlet 13 is arranged on the side wall of the rotating shaft 7 positioned in the gas outlet cavity 12, the gas generated by the screw compressor 11 is compressed into high-pressure gas and then enters the gas outlet cavity 12, and then. That is to say the shaft 7 is both the drive shaft and the outlet duct of the screw compressor 11.

Further, the compressor air inlet 28 of the screw compressor 11 is connected with an air source 15, the air source 15 stores compressed air, and the compressed air has high air pressure, so that the screw compressor 11 works more efficiently, the pressure of the air entering the isolation bin 6 can be increased, and the feeding effect is better. In this embodiment, the gas is inert gas such as nitrogen, which prevents the reaction between the gas and the corrosion inhibitor.

The rotating shaft 7 is further sleeved with a brake 27 for braking the rotating shaft 7, and the brake 27 is located in the storage bin 2 and fixedly connected with the inner wall of the storage bin 2 through a rigid connecting rod 32. The brake 27 can stop the rotation of the rotating shaft 7 when the corrosion inhibitor is not required to be put in, namely, the mixing bin 3 can be used as a section of flow channel in the working process of the molten salt all the time, when the corrosion inhibitor is not required to be added in the molten salt, another switching pipeline is not required to be switched to enable the molten salt to bypass the mixing bin 3, the operation is simpler and more convenient, and the cost is saved. And the brake 27 also plays a supporting role for the rotation shaft 7.

The molten salt corrosion monitoring device is characterized in that a controller 29 is further arranged, a corrosion rate sensor for monitoring the molten salt corrosion rate is further arranged in the mixing bin 3, the controller 29 is connected with the corrosion rate sensor, the sensor 31 and the brake 27 through signal lines, the corrosion rate sensor and the sensor 31 send monitoring data to the controller 29, and the controller 29 controls the brake 27 to be turned on or turned off.

The other core of the invention is to provide a molten salt corrosion inhibitor feeding method, which comprises the molten salt corrosion inhibitor feeding device, and comprises the following steps:

step 1: closing the second feeding channel and the pressurizing assembly, opening the first feeding channel, and allowing the corrosion inhibitor to enter the isolation bin 6;

step 2: closing the first feeding channel, and opening the pressurizing assembly to pressurize the isolation bin 6;

step 3: the second feeding channel is opened, and the corrosion inhibitor is brought into the mixing bin 3 by the gas.

Furthermore, the first sealing assembly of the first feeding channel, the second sealing assembly of the second feeding channel and the pressurizing assembly are all driven by the rotating assembly.

The working process of the releasing device and the releasing method of the invention is further explained as follows:

firstly, the corrosion inhibitor is injected into the silo 2 through the feed inlet 30 and then sealed.

When the controller 29 monitors that the molten salt corrosion rate in the molten salt storage tank is higher than a safety set value through the corrosion rate sensor, the brake 27 is controlled to be closed, and the fastening of the rotating shaft 7 is released.

High-temperature liquid molten salt enters the mixing bin 3 from the working medium inlet 4, flows to the working medium outlet 5 and then flows out, the flowing molten salt drives the impeller 26 to rotate, the impeller 26 drives the rotating shaft 7 to rotate, and the rotating shaft 7 simultaneously drives the first rotating part 16, the second rotating part 21 and the screw compressor 11 to rotate.

Take the state of fig. 4, 5, 7, 8, and 9 as the initial position of the rotating shaft 7 (the first feeding channel and the second feeding channel are closed at the initial position, and the connecting hole 10 and the air outlet hole 8 are closed in a staggered manner) as an example:

firstly, the rotating shaft 7 rotates to continuously drive the screw compressor 11 to introduce compressed gas into the rotating shaft 7.

In a rotation period of the rotating shaft 7, the first material leaking groove 17 on the first rotating member 16 and the second material leaking groove 19 on the first fixing member 18 are firstly gradually overlapped and communicated to form a first material feeding channel, the first scraping blade 20 drives corrosion inhibitor particles in contact with the first scraping blade to do circular motion, and the corrosion inhibitor particles are discharged into the isolation bin 6 through the first material feeding channel due to gravity.

The rotating shaft 7 continues to rotate, the first material leaking groove 17 and the second material leaking groove 19 are staggered to close the first material feeding channel, the connecting hole 10 and the air outlet hole 8 are gradually overlapped and communicated but are not completely overlapped, and the pneumatic gas enters the isolation bin 6 to gradually increase the air pressure of the isolation bin 6, namely the isolation bin 6 is pre-pressurized in a closed state (the first material feeding channel and the second material feeding channel are closed).

The rotating shaft 7 continues to rotate, the first material leaking groove 17 and the second material leaking groove 19 are still staggered, the third material leaking groove 22 and the fourth material leaking groove 24 are gradually overlapped and communicated to form a second material feeding channel, the connecting hole 10 and the air outlet hole 8 are communicated, when the third material leaking groove 22 and the fourth material leaking groove 24 are completely aligned and overlapped, the connecting hole 10 and the air outlet hole 8 are also completely overlapped concentrically, the gas flow is maximum at the moment, meanwhile, the second scraping blade 25 scrapes all corrosion inhibitor particles scattered on the upper surface of the second rotating part 21 into the second material feeding channel, high-pressure gas in the isolation bin 6 carries the corrosion inhibitor particles to be sprayed to the mixing bin 3, then the high-pressure gas is stirred by the impellers 26 arranged from top to bottom in the mixing bin 3, and the corrosion inhibitor particles are uniformly mixed with molten salt.

Then the rotating shaft 7 continues to rotate, the third material leaking groove 22 and the fourth material leaking groove 24 are staggered to close the second material feeding channel, the connecting hole 10 and the air outlet hole 8 are also staggered to be not communicated, and then the operation of the next rotating period is continued.

In operation, when the controller 29 detects that the corrosion rate is below the safety set value by the corrosion rate sensor, the controller 27 is controlled to tighten the shaft 7 and stop the shaft 7 at the initial position.

The invention realizes long-term monitoring of the molten salt corrosion rate in a high-temperature molten salt heat storage system, particularly a high-temperature molten salt heat storage tank, and the high-temperature molten salt heat storage system is connected with an inlet pipe of the heat storage tank in series and is provided with a device with a double alternate sealing structure, namely, an upper disk and a lower disk (a first rotating part 16, a first fixing part 18, a second rotating part 21 and a second fixing part 23) are adopted to carry out double alternate sealing, in one rotation period of a rotating shaft 7, corrosion inhibitor particles enter an isolation bin 6 and are sealed, after the pressure in the isolation bin 6 is increased by introducing gas, the isolation bin 6 is communicated with a mixing bin 3, and the corrosion inhibitor particles in the isolation bin 6 are blown into the mixing. The liquid high-temperature molten salt in the mixing bin 3 is prevented from flowing back to the separation bin 6 and the storage bin 2, and the system safety is ensured.

The corrosion inhibitor particles (active metal particle powder such as Mg and the like) are automatically added into the molten salt and uniformly mixed with the molten salt through the arrangement of the double-alternating sealing structure, the corrosion inhibitor particles and corrosive impurities in the molten salt are subjected to oxidation-reduction reaction, the content of the corrosive impurities is reduced, the corrosion of high-temperature molten salts such as chlorine salt or carbonate and the like to structural metal materials is slowed down, the corrosivity of the high-temperature molten salts is maintained at a low level, and the long-term safe operation of a high-temperature heat storage system is maintained.

Through setting up impeller 26 and first closed assembly, second closed assembly, helical-lobe compressor 11 coaxial, utilize fused salt flow kinetic energy to realize the operation of throwing that does not have extra power input, especially above-mentioned structure forms corresponding throwing material frequency according to the linkage of different fused salt flow velocity, has realized the high efficiency of corrosion inhibitor granule with the fused salt, evenly mixes, satisfies anticorrosive dynamic demand. The rotating shaft 7 increases the rotating speed along with the increase of the flow speed of the molten salt, and the gas increases the pressure along with the increase of the rotating speed of the rotating shaft 7, so that reverse infiltration caused by high-speed molten salt fluid is avoided, and the dynamic requirement of the gas pressure is met.

The pre-pressurization of the isolation bin 6 is realized through the arrangement of gas and the screw compressor 11, the reverse osmosis and leakage of high-temperature molten salt are prevented, and the safety of the structures of the isolation bin 6, the bin 2 and the like is effectively protected.

The corrosion inhibitor particles are prevented from caking by the arrangement of the first scraping piece 20, the corrosion inhibitor particles are gathered by the arrangement of the second scraping piece 25, and the gas source 15 and the screw compressor 11 are arranged, so that the corrosion inhibitor particles are periodically sprayed to the mixing bin 3 by gas carried by the gas, and the high-efficiency feeding of the corrosion inhibitor particles is realized.

And the unattended operation is realized through the arrangement of the controller 29, the corrosion rate sensor and the brake 27, and the long-term corrosion inhibition maintenance operation capability of the heat storage system is realized.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.