Vapor generator corrosion deposition control device, nuclear power system and use method

Abstract

The invention relates to the technical field of steam generator corrosion deposition control, in particular to a steam generator corrosion deposition control device, a nuclear power system and a using method. A steam generator corrosion deposition control device comprises a water inlet assembly which comprises a water inlet pipeline, a first water inlet isolation valve, a second water inlet isolation valve and a filter, and the water inlet pipeline is provided with the first water inlet isolation valve, the second water inlet isolation valve and the filter; the backwashing assembly comprises a backwashing pipeline and a first passing valve, and the first communication position of the backwashing pipeline and the water inlet pipeline is located at the upstream of the first water inlet isolation valve; the pressure difference assembly is suitable for measuring the pressure difference in the filter; and the sewage collecting assembly is connected with the filter to collect corrosives in the filter. The invention provides a steam generator corrosion deposition control device, a nuclear power system and a use method, and aims to solve the problems that a cleaning liquid inlet pipeline and a cleaning liquid recovery pipeline need to be arranged outside a filter in external backwashing, and the whole device occupies a large space.

Description

Technical Field

[0001] The present invention relates to the technical field of corrosion and deposition control of steam generators, and particularly relates to a corrosion and deposition control device for a steam generator, a nuclear power system and a usage method thereof. Background Art

[0002] The high-temperature gas-cooled reactor is the reactor type with the highest operating temperature among various current nuclear power plants. As the core equipment connecting the primary and secondary circuits of a high-temperature gas-cooled reactor nuclear power plant, its structure is completely different from that of the existing pressurized water reactor steam generator, and it is the first direct-current steam generator for nuclear power in China.

[0003] In order to increase the heat transfer area as much as possible within a limited space, the heat exchange tubes of the high-temperature gas-cooled reactor steam generator adopt a slender spiral coil assembly design. Due to the different positions and spiral radii of different heat exchange tubes, the frictional resistance along the heat transfer tubes themselves is different. In order to evenly distribute the feed water flow in each heat transfer tube during the operation of the steam generator and ensure that the steam temperature deviation at the outlet of each heat transfer tube is within the allowable range, a throttling assembly is designed and installed at the feed water inlet of the heat transfer tube. The aperture of the heat transfer tube itself is small, and the throttling holes of the throttling assembly are even smaller, which will cause the corrosion products of the feed water upstream system pipes and equipment to be more likely to deposit in the throttling holes and heat transfer tubes during operation. And through operation experience, it is found that most of the deposits in the heat transfer tubes and throttling assemblies are magnetic Fe 3 O 4 , which is more likely to adsorb on the pipe wall, exacerbating the corrosion and deposition in the heat transfer tube wall and the throttling assembly holes, resulting in a change in the flow aperture of the heat exchange tube, causing the feed water flow distribution of each heat transfer tube to deviate from the design value, and affecting the consistency of the steam temperature at the outlet of the heat transfer tubes of the steam generator.

[0004] Through research and analysis, most of the corrosion deposits in the heat transfer tubes of the steam generator come from the carbon steel pipes and equipment of the main feed water system upstream of the steam generator. Filtering the main feed water entering the steam generator can effectively reduce the corrosion products entering the heat transfer tubes of the steam generator, thereby alleviating or eliminating the corrosion and deposition problems similar to those of the helical tube direct-current steam generator in high-temperature nuclear power plants. In order to solve the above corrosion and deposition problems, filters are often installed on the feed water pipes of the steam generator. However, the filters are blocked due to blocking corrosion products during long-term use. The filters themselves usually have a backwashing function. When the filters themselves cannot solve the blocking problem, external backwashing is required. The existing external backwashing methods often require the installation of an inlet pipe and a recovery pipe for the cleaning liquid outside the filter. The above pipes need to occupy additional space and require additional power devices, resulting in a large space occupation and high energy consumption of the entire device, and may require shutdown for treatment. Summary of the Invention

[0005] In view of this, the present invention provides a device for controlling corrosion and deposition of a steam generator, a nuclear power system and a usage method, which solve the problem that a filter is provided on the feed water pipe of the steam generator, and the filter is blocked due to blocking corrosion products during long-term use. The filter itself usually has a backwashing function. When the filter itself cannot solve the blocking problem, external backwashing is required. The existing external backwashing methods often require an inlet pipe for the cleaning liquid to be provided outside the filter, which occupies extra space, and an additional power device is required for driving. There are problems such as large space occupation, high energy consumption, and possible shutdown for treatment of the whole device.

[0006] In a first aspect, the present invention provides a device for controlling corrosion and deposition of a steam generator, including:

[0007] An inlet assembly, the inlet assembly includes an inlet pipe, a first inlet isolation valve, a second inlet isolation valve and a filter. The first inlet isolation valve, the second inlet isolation valve and the filter are provided on the inlet pipe. The first inlet isolation valve is provided upstream of the filter, and the second inlet isolation valve is provided downstream of the filter. The inlet pipe is adapted to be connected to the inlet end of the steam generator, and a fluid is adapted to flow in the inlet pipe;

[0008] A backwashing assembly, the backwashing assembly includes a backwashing pipe and a first through valve. The first connection of the backwashing pipe and the inlet pipe is located upstream of the first inlet isolation valve, and the second connection of the backwashing pipe and the inlet pipe is located between the second inlet isolation valve and the filter;

[0009] A differential pressure assembly, the differential pressure assembly is adapted to measure the pressure difference inside the filter;

[0010] A sewage collection assembly, the sewage collection assembly is connected to the filter to collect the corrosion products inside the filter.

[0011] Through the above settings, when the value of the pressure difference reaches a preset value, by switching to the second state, the backwashing of the filter is realized, and the corrosion products inside the filter are collected by the sewage collection assembly. There is no need to introduce a flushing pipe from the outside, which has the advantage of small space occupation, and there is no need for an additional power device, low energy consumption, and the external backwashing of the filter can be realized without interruption of the feed water of the steam generator and without shutdown of the unit, which is beneficial to the continuous and stable operation of the nuclear power unit.

[0012] In an optional embodiment, a third inlet isolation valve is further provided on the inlet pipe, and the third inlet isolation valve is located between the second inlet isolation valve and the filter.

[0013] In an alternative embodiment, the water inlet assembly further includes a first manual valve, a second manual valve, and a fourth water inlet isolation valve. The first manual valve is located between the first water inlet isolation valve and the first connection point. The second manual valve is located between the third water inlet isolation valve and the second connection point. The fourth water inlet isolation valve is located between the steam generator and the second water inlet isolation valve.

[0014] In an alternative embodiment, a second through valve, a third manual valve, and a fourth manual valve are further provided on the backwashing pipeline. The second through valve is located downstream of the first through valve. The third manual valve is located downstream of the second through valve. The fourth manual valve is located upstream of the first through valve.

[0015] In an alternative embodiment, the sewage collection assembly includes a sewage collection pipeline and a first sewage discharge valve. One end of the sewage collection pipeline is connected to the filter, and a first sewage discharge valve is provided on the sewage collection pipeline.

[0016] In an alternative embodiment, a second sewage discharge valve and a fifth manual valve are further provided on the sewage collection pipeline. The second sewage discharge valve is provided upstream of the first sewage discharge valve. The fifth manual valve is located upstream of the second sewage discharge valve.

[0017] In an alternative embodiment, the differential pressure assembly includes a pressure pipeline and a differential pressure gauge. One end of the pressure pipeline is communicated with the water inlet part of the filter, and the other end of the pressure pipeline is communicated with the water outlet part of the filter. A differential pressure gauge is provided on the pressure pipeline.

[0018] In an alternative embodiment, a first pressure valve and a second pressure valve are further provided on the pressure pipeline. The first pressure valve is provided between the differential pressure gauge and the water inlet part. The second pressure valve is provided between the differential pressure gauge and the water outlet part.

[0019] In a second aspect, the present invention further provides a nuclear power system, including the above steam generator corrosion and deposition control device.

[0020] In a third aspect, the present invention further provides a method for using a steam generator corrosion and deposition control device. In a first state, the first water inlet isolation valve and the second water inlet isolation valve are opened, and the first through valve is closed. The fluid flows into the steam generator through the water inlet pipeline. In a second state, the first water inlet isolation valve and the second water inlet isolation valve are closed, and the first through valve is opened. The fluid enters the filter through the backwashing pipeline to backwash the filter, and the sewage collection assembly collects the corrosion products in the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of a corrosion deposition control device for a steam generator according to an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the usage method of a corrosion deposition control device for a steam generator according to an embodiment of the present invention.

[0024] Explanation of reference numerals: 1. Water inlet assembly; 101. Water inlet pipe; 102. Second water inlet isolation valve; 103. Filter; 104. First water inlet isolation valve; 105. Third water inlet isolation valve; 106. Second manual valve; 107. First manual valve; 108. Fourth water inlet isolation valve; 2. Steam generator; 3. Backwashing assembly; 301. Backwashing pipe; 302. First through valve; 303. Second through valve; 304. Third manual valve; 305. Fourth manual valve; 4. Sewage collection assembly; 401. Sewage collection pipe; 402. First sewage discharge valve; 403. Second sewage discharge valve; 404. Fifth manual valve; 405. Sewage collection pool; 5. Differential pressure assembly; 501. Pressure pipe; 502. First pressure valve; 503. Differential pressure gauge; 504. Second pressure valve. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] The following will be combined with Figure 1-2 , to describe the embodiments of the present invention.

[0027] According to an embodiment of the present invention, on the one hand, a corrosion deposition control device for a steam generator 2 is provided, including: an inlet water assembly 1, including an inlet water pipe 101, a first inlet water isolation valve 104, a second inlet water isolation valve 102, and a filter 103. The first inlet water isolation valve 104, the second inlet water isolation valve 102, and the filter 103 are provided on the inlet water pipe 101. The first inlet water isolation valve 104 is provided upstream of the filter 103, and the second inlet water isolation valve 102 is provided downstream of the filter 103. The inlet water pipe 101 is adapted to be connected to the inlet end of the steam generator 2, and a fluid is adapted to flow in the inlet water pipe 101; a backwashing assembly 3, including a backwashing pipe 301 and a first passing valve 302. The first connection between the backwashing pipe 301 and the inlet water pipe 101 is located upstream of the first inlet water isolation valve 104, and the second connection between the backwashing pipe 301 and the inlet water pipe 101 is located between the second inlet water isolation valve 102 and the filter 103; a pressure difference assembly 5, adapted to measure the pressure difference inside the filter 103; a sewage collection assembly 4, connected to the filter 103 to collect the corrosion products inside the filter 103.

[0028] In the first state, the first inlet water isolation valve 104 and the second inlet water isolation valve 102 are opened, and the first passing valve 302 is closed. The fluid flows into the steam generator 2 through the inlet water pipe 101; in the second state, the first inlet water isolation valve 104 and the second inlet water isolation valve 102 are closed, and the first passing valve 302 is opened. The fluid enters the filter 103 through the backwashing pipe 301 to backwash the filter 103, and the sewage collection assembly 4 collects the corrosion products inside the filter 103.

[0029] Through the above settings, when the value of the pressure difference reaches a preset value, by switching to the second state, the backwashing of the filter 103 is realized, and the sewage collection assembly 4 collects the corrosion products inside the filter 103. There is no need to introduce a flushing pipe from the outside, which has the advantages of small occupied space, no need for an additional power device, low energy consumption, and no need to stop the machine for treatment.

[0030] In one embodiment, as Figure 1 shown, a third inlet water isolation valve 105 is further provided on the inlet water pipe 101. The third inlet water isolation valve 105 is located between the second inlet water isolation valve 102 and the filter 103. The opening and closing of the inlet water pipe 101 can be controlled by the first inlet water isolation valve 104, the second inlet water isolation valve 102, and the third inlet water isolation valve 105. It should be noted that the upstream in this embodiment refers to the direction in which the fluid first flows through. For example, "the first inlet water isolation valve 104 is located upstream of the filter 103" means that the fluid first flows through the first inlet water isolation valve 104 and then through the filter 103 in the first state.

[0031] In one embodiment, as Figure 1As shown, the water inlet assembly 1 further includes a first manual valve 107, a second manual valve 106, and a fourth water inlet isolation valve 108. The first manual valve 107 is located between the first water inlet isolation valve 104 and the first connection point. The second manual valve 106 is located between the third water inlet isolation valve 105 and the second connection point. The fourth water inlet isolation valve 108 is located between the steam generator 2 and the second water inlet isolation valve 102. In this embodiment, the first manual valve 107 is upstream of the first water inlet isolation valve 104, the second manual valve 106 is downstream of the third water inlet isolation valve 105, and the fourth water inlet isolation valve 108 is downstream of the second water inlet isolation valve 102. By combining the first manual valve 107 with the first water inlet isolation valve 104, the second manual valve 106 with the third water inlet isolation valve 105, and the fourth water inlet isolation valve 108 with the second water inlet isolation valve 102, a double insurance is achieved. When a certain water inlet isolation valve among the first water inlet isolation valve 104, the second water inlet isolation valve 102, and the third water inlet isolation valve 105 fails, the corresponding pipeline can be closed through the paired water inlet isolation valve or manual valve to achieve safety backup.

[0032] In this embodiment, as Figure 1 shown, the first connection point between the backwash pipeline 301 and the water inlet pipeline 101 is upstream of the first water inlet isolation valve 104, and the second connection point between the backwash pipeline 301 and the water inlet pipeline 101 is between the second water inlet isolation valve 102 and the third water inlet isolation valve 105. By controlling the opening and closing of the water inlet pipeline 101 between the first connection point and the filter 103 through the first water inlet isolation valve 104, controlling the opening and closing of the water inlet pipeline 101 between the second connection point and the steam generator 2 through the second water inlet isolation valve 102, and controlling the opening and closing of the water inlet pipeline 101 between the second connection point and the filter 103 through the third water inlet isolation valve 105, segmented control of the water inlet pipeline 101 is achieved.

[0033] In one embodiment, as Figure 1 shown, the backwash pipeline 301 is further provided with a second through valve 303, a third manual valve 304, and a fourth manual valve 305. The second through valve 303 is downstream of the first through valve 302, the third manual valve 304 is downstream of the second through valve 303, and the fourth manual valve 305 is upstream of the first through valve 302. By providing the third manual valve 304, the fourth manual valve 305, the first through valve 302, and the second through valve 303 on the backwash pipeline 301, when a certain valve has a problem, safety backup can be achieved and the backwash pipeline 301 can be closed.

[0034] In one embodiment, as Figure 1As shown, the sewage collection component 4 includes a sewage collection pipe 401 and a first sewage discharge valve 402. One end of the sewage collection pipe 401 is connected to the filter 103, and the first sewage discharge valve 402 is provided on the sewage collection pipe 401. Through the sewage collection pipe 401, the dirt obtained by flushing in the backwashing state is discharged outside the filter 103, and the first sewage discharge valve 402 controls the opening and closing of the sewage collection pipe 401.

[0035] In one embodiment, as Figure 1 shown, a second sewage discharge valve 403 and a fifth manual valve 404 are further provided on the sewage collection pipe 401. The second sewage discharge valve 403 is provided upstream of the first sewage discharge valve 402, and the fifth manual valve 404 is located upstream of the second sewage discharge valve 403. Through the cooperation of the first sewage discharge valve 402, the second sewage discharge valve 403 and the fifth manual valve 404, when there is a problem during the closing process of a certain valve, other valves are closed to play a "backup" role. As Figure 1 shown, one end of the sewage collection pipe 401 is connected to the filter 103, and the other end extends into the sewage collection pool 405 to collect sewage by the sewage collection pool 405.

[0036] In one embodiment, as Figure 1 shown, the differential pressure component 5 includes a pressure pipe 501 and a differential pressure gauge 503. One end of the pressure pipe 501 is communicated with the water inlet part of the filter 103, the other end of the pressure pipe 501 is communicated with the water outlet part of the filter 103, and the differential pressure gauge 503 is provided on the pressure pipe 501. The differential pressure gauge 503 measures the change of the pressure value in the filter 103.

[0037] In one embodiment, as Figure 1 shown, a first pressure valve 502 and a second pressure valve 504 are further provided on the pressure pipe 501. The first pressure valve 502 is provided between the differential pressure gauge 503 and the water inlet part, and the second pressure valve 504 is provided between the differential pressure gauge 503 and the water outlet part. The first pressure valve 502 and the second pressure valve 504 control the opening and closing of the pressure pipe 501 to play a "backup" role when there is a problem during the closing process of a certain valve.

[0038] In this embodiment, a controller is further included. The controller is communicatively connected to the first pressure valve 502, the second pressure valve 504, the first drain valve 402, the second drain valve 403, the first inlet isolation valve 104, the second inlet isolation valve 102, the third inlet isolation valve 105, the fourth inlet isolation valve 108, and the differential pressure gauge 503 respectively to achieve automatic control. It should be noted that the first pressure valve 502, the second pressure valve 504, the first drain valve 402, the second drain valve 403, the first inlet isolation valve 104, the second inlet isolation valve 102, the third inlet isolation valve 105, and the fourth inlet isolation valve 108 in this embodiment are all electromagnetic control valves, and the first manual valve 107, the second manual valve 106, the third manual valve 304, and the fourth manual valve 305 are all manual control valves. In addition, a plurality of magnetic adsorption rods are provided in the filter 103 to adsorb metal impurities in the fluid.

[0039] A nuclear power system includes the above corrosion deposition control device of the steam generator 2, and further includes a steam generator 2 and a power pump. Among them, the power pump is arranged upstream of the water inlet pipe 101 to drive the fluid into the water inlet pipe 101, and the power pump is connected to the controller by a circuit.

[0040] A method for using a corrosion deposition control device of a steam generator 2, as Figure 2 shown, includes the following steps:

[0041] (1) In the first state, the controller opens the first inlet isolation valve 104, the second inlet isolation valve 102, the third inlet isolation valve 105, and the fourth inlet isolation valve 108 respectively, closes the first drain valve 402, the second drain valve 403, the first through valve 302, the second through valve 303, the first pressure valve 502, and the second pressure valve 504, and the first pressure valve 502 and the second pressure valve 504 are opened simultaneously every once in a while to enable the differential pressure gauge 503 to measure the pressure value in the filter 103. The fluid enters the steam generator 2 through the water inlet pipe 101. When the pressure value of the differential pressure gauge 503 is greater than or equal to the set value P1, it is switched from the first state to the third state;

[0042] (2) In the third state, the first water inlet isolation valve 104, the second water inlet isolation valve 102, the third water inlet isolation valve 105, and the fourth water inlet isolation valve 108 are respectively kept in the open state, the first through valve 302 and the second through valve 303 are kept in the closed state, the filter 103 starts automatic backwashing, and the first sewage valve 402 and the second sewage valve 403 are opened at the same time. After the backwashing time of the filter 103 is greater than the preset value t1, if the pressure value of the differential pressure gauge 503 is less than the set value P2 (P2<P1), the filter 103 stops backwashing and switches from the third state to the first state; after the backwashing time of the filter 103 is greater than the preset value t1, if the pressure value of the differential pressure gauge 503 is greater than or equal to the set value P2, the filter 103 switches from the third state to the second state;

[0043] (3) In the second state, the controller slowly closes the first water inlet isolation valve 104 and the second water inlet isolation valve 102, and slowly opens the first through valve 302 and the second through valve 303 to ensure that the fluid flow rate does not fluctuate greatly during the switching process. The first sewage valve 402 and the second sewage valve 403 remain open, and the fluid enters the filter 103 through the backwashing pipe 301 to achieve backwashing of the filter 103 until the pressure value of the differential pressure gauge 503 is less than the set value P2, and the second state is switched to the first state;

[0044] (4) In the first state, after the filter 103 in the water inlet pipeline has been running for a time ≥ the set value t2, it switches from the first state to the fourth state. In the fourth state, the controller slowly closes the first water inlet isolation valve 104 and the third water inlet isolation valve 105, and slowly opens the first pass valve 302 and the second pass valve 303 to ensure that the fluid flow does not fluctuate greatly during the switching process. The filter 103 stops working, and it is necessary to remove and check the magnetic adsorption rod in the filter 103, clean the magnetic adsorption rod, clean the sediment attached to the magnetic adsorption rod and then reinstall it. After reinstalling, it switches from the fourth state to the first state.

[0045] It should be noted that the first manual valve 107, the second manual valve 106, the third manual valve 304 and the third manual valve 304 are always in the open state during the whole process. Only when a certain valve has a problem can the manual valve matched with it be used. The first state in step (4) can be the third state in step (2) switched to the first state, or the second state in step (3) switched to the first state, or the first state in step (1). In addition, the first state of the present application refers to the normal operating state, the third state refers to the state of automatic backwashing of the filter 103, the second state is the state of external backwashing of the filter 103 by means of the backwashing pipe 301, and the fourth state refers to the state of maintenance of the filter 103.

[0046] The corrosion deposition control device for the steam generator 2 provided by the present invention has the following advantages: (1) There is no need to introduce cleaning liquid from the outside during the whole process, reducing the corresponding liquid inlet pipelines, and having the advantages of small occupied space and not affecting the continuous operation of the unit; (2) The whole device realizes automatic state switching without manual intervention, effectively controls the deposition of corrosion products in the steam generator 2, maintains good heat transfer performance of the steam generator 2, ensures the safe and stable operation of the unit, and has good popularization value and application prospect; (3) With the help of the magnetic adsorption rod, magnetic corrosion products such as Fe 3 O 4 in the fluid can be adsorbed, further improving the ability to remove corrosion products.

[0047] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A steam generator corrosion deposition control device, characterized in that: include: A water inlet assembly (1), the water inlet assembly (1) comprising a water inlet pipeline (101), a first water inlet isolation valve (104), a second water inlet isolation valve (102) and a filter (103); the water inlet pipeline (101) is provided with the first water inlet isolation valve (104), the second water inlet isolation valve (102) and the filter (103); the first water inlet isolation valve (104) is arranged upstream of the filter (103), the second water inlet isolation valve (102) is arranged downstream of the filter (103); the water inlet pipeline (101) is suitable for being connected to the water inlet end of the steam generator (2); and a fluid is suitable for flowing in the water inlet pipeline (101); A backwashing assembly (3), the backwashing assembly (3) comprising a backwashing pipe (301) and a first through valve (302), wherein a first connection point between the backwashing pipe (301) and the water inlet pipe (101) is located upstream of the first water inlet isolation valve (104), and a second connection point between the backwashing pipe (301) and the water inlet pipe (101) is located between the second water inlet isolation valve (102) and the filter (103); A pressure differential assembly (5), the pressure differential assembly (5) being adapted to measure a pressure differential within the filter (103); A sewage collection component (4) is connected to the filter (103) to collect corrosion products in the filter (103).

2. The steam generator corrosion deposition control device according to claim 1, characterized in that: The water inlet pipeline (101) is also provided with a third water inlet isolation valve (105), and the third water inlet isolation valve (105) is located between the second water inlet isolation valve (102) and the filter (103).

3. The steam generator corrosion deposition control device according to claim 2, characterized in that: The water inlet assembly (1) further comprises a first manual valve (107), a second manual valve (106) and a fourth water inlet isolation valve (108), wherein the first manual valve (107) is located between the first water inlet isolation valve (104) and the first connecting point, the second manual valve (106) is located between the third water inlet isolation valve (105) and the second connecting point, and the fourth water inlet isolation valve (108) is located between the steam generator (2) and the second water inlet isolation valve (102).

4. The steam generator corrosion deposition control device according to claim 1, characterized in that: The backwash pipeline (301) is also provided with a second through valve (303), a third manual valve (304) and a fourth manual valve (305), wherein the second through valve (303) is located downstream of the first through valve (302), the third manual valve (304) is located downstream of the second through valve (303), and the fourth manual valve (305) is located upstream of the first through valve (302).

5. The steam generator corrosion deposition control device according to claim 1, characterized in that: The sewage collection component (4) comprises a sewage collection pipe (401) and a first sewage discharge valve (402); one end of the sewage collection pipe (401) is connected to the filter (103); and the sewage collection pipe (401) is provided with the first sewage discharge valve (402).

6. The steam generator corrosion deposition control device according to claim 5, characterized in that: The sewage collection pipe (401) is also provided with a second sewage discharge valve (403) and a fifth manual valve (404), wherein the second sewage discharge valve (403) is arranged upstream of the first sewage discharge valve (402), and the fifth manual valve (404) is located upstream of the second sewage discharge valve (403).

7. The steam generator corrosion deposition control device according to claim 1, characterized in that: The pressure difference assembly (5) comprises a pressure pipe (501) and a pressure difference gauge (503); one end of the pressure pipe (501) is connected to the water inlet of the filter (103); the other end of the pressure pipe (501) is connected to the water outlet of the filter (103); and the pressure pipe (501) is provided with a pressure difference gauge (503).

8. The steam generator corrosion deposition control device according to claim 7, characterized in that: The pressure pipe (501) is also provided with a first pressure valve (502) and a second pressure valve (504), wherein the first pressure valve (502) is provided between the differential pressure gauge (503) and the water inlet, and the second pressure valve (504) is provided between the differential pressure gauge (503) and the water outlet.

9. A nuclear power system, characterized in that: A steam generator (2) corrosion deposition control device comprising the device described in any one of claims 1 to 8.

10. A method for using a steam generator corrosion deposition control device, for using the steam generator (2) corrosion deposition control device according to claim 1, characterized in that: In a first state, the first water inlet isolation valve (104) and the second water inlet isolation valve (102) are opened, the first through valve (302) is closed, and the fluid flows into the steam generator (2) through the water inlet pipe (101); in a second state, the first water inlet isolation valve (104) and the second water inlet isolation valve (102) are closed, the first through valve (302) is opened, and the fluid enters the filter (103) through the backwashing pipe (301) to backwash the filter (103), and the sewage collection component (4) collects the corrosive substances in the filter (103).

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