CN116400752A - Pressure control system and method suitable for high-temperature medium environment - Google Patents
Pressure control system and method suitable for high-temperature medium environment Download PDFInfo
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- CN116400752A CN116400752A CN202310496801.0A CN202310496801A CN116400752A CN 116400752 A CN116400752 A CN 116400752A CN 202310496801 A CN202310496801 A CN 202310496801A CN 116400752 A CN116400752 A CN 116400752A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 220
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 110
- 239000003381 stabilizer Substances 0.000 claims abstract description 80
- 230000001502 supplementing effect Effects 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention provides a pressure control system and a pressure control method suitable for a high-temperature medium environment, wherein the pressure control system comprises a discharge water heat exchanger, a nitrogen pressure stabilizer, a nitrogen generating device and a water supplementing and pressure regulating device, wherein an inlet of the discharge water heat exchanger is communicated with a main pipeline of a loop system, an outlet of the discharge water heat exchanger is communicated with a water space at the bottom of the nitrogen pressure stabilizer, the nitrogen generating device is communicated with a gas space at the top of the nitrogen pressure stabilizer, nitrogen is input into the nitrogen pressure stabilizer, the water supplementing and pressure regulating device is communicated with the water space at the bottom of the nitrogen pressure stabilizer, and water is supplemented into the nitrogen pressure stabilizer.
Description
Technical Field
The application relates to the technical field of nuclear power devices, in particular to a pressure control system and a pressure control method suitable for a high-temperature medium environment.
Background
In a nuclear power plant or a reactor thermal hydraulic test, a pressure control system is an important component of a reactor-loop system and is used for controlling, adjusting and protecting the pressure of a coolant in a loop under various working conditions, wherein a voltage stabilizer is main equipment of the pressure control system. The existing pressure control system mainly adopts an electric heating type voltage stabilizer with an electric heater and a sprayer, and has the defects of complex equipment structure and high manufacturing cost. The gas tank type pressure stabilizer adopting the compressed air tank has simple structure and simple and convenient pressure regulating program, but has poor pressure regulating capability, and meanwhile, oxygen in the compressed air can cause corrosion of system pipelines and equipment.
Therefore, it is necessary to design a pressure control system with simple structure, fewer auxiliary devices, convenient maintenance and management, high pressure adjustment accuracy and simple adjustment method, and provide pressure control and protection for the coolant in a loop system.
Disclosure of Invention
The invention aims to solve the problems and provides a pressure control system and a pressure control method suitable for a high-temperature medium environment.
Embodiments of the present application are implemented as follows:
the embodiment of the application provides a pressure control system suitable for a high-temperature medium environment, which is characterized by comprising a discharge water heat exchanger, a nitrogen pressure stabilizer, a nitrogen generating device and a water supplementing and pressure regulating device, wherein an inlet of the discharge water heat exchanger is communicated with a main pipeline of a loop system, an outlet of the discharge water heat exchanger is communicated with a water space at the bottom of the nitrogen pressure stabilizer, and high-temperature water discharged to the nitrogen pressure stabilizer is cooled to keep the temperature of a water body of the nitrogen pressure stabilizer stable;
the nitrogen generating device is communicated with the top gas space of the nitrogen voltage stabilizer, nitrogen is input into the nitrogen voltage stabilizer, and oxygen in the atmosphere is isolated from being dissolved in water while the pressure is regulated;
the water supplementing and pressure regulating device is communicated with the water space at the bottom of the nitrogen pressure stabilizer and supplements water in the nitrogen pressure stabilizer.
In some optional embodiments, the water supplementing and pressure regulating device comprises a water tank, a booster pump and a water supplementing pump, wherein the booster pump and the water supplementing pump are arranged in parallel, an inlet is communicated with the water tank through a water outlet pipe, an outlet is communicated with the nitrogen pressure stabilizer through a water inlet pipe, and the liquid level in the nitrogen pressure stabilizer is maintained.
In some alternative embodiments, the water tank further comprises a bypass water return pipe, and two ends of the bypass water return pipe are respectively communicated with the water tank and the water inlet pipe.
In some alternative embodiments, the device further comprises an oxygen removal device, wherein an inlet and an outlet of the oxygen removal device are respectively communicated with the water tank to form self circulation.
In some alternative embodiments, the nitrogen pressure stabilizer further comprises a discharge pipe, wherein the discharge pipe is arranged at the top of the nitrogen pressure stabilizer and is communicated with the top gas space of the nitrogen pressure stabilizer.
In some alternative embodiments, the deoxidizing device comprises deoxidizing equipment, dosing equipment and nitrogen making equipment, wherein the deoxidizing equipment and the dosing equipment are communicated with the water tank, and deoxidize and dose water in the water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere.
In some alternative embodiments, the inlet of the drain heat exchanger is provided with a drain heat exchanger inlet isolation valve and the outlet of the drain heat exchanger is provided with a drain heat exchanger outlet isolation valve.
In some alternative embodiments, the outlets of the booster pump and the make-up pump are provided with a booster check valve and a make-up check valve, respectively; the water outlet pipe is provided with a manual valve, the water inlet pipe is provided with a backwater isolation valve, and the bypass backwater pipe is provided with a bypass pressure reducing valve.
In some alternative embodiments, the outlet of the nitrogen generating device is provided with a nitrogen generating device outlet isolation valve, and the discharge pipe is provided with a discharge safety valve.
A control method of a pressure control system suitable for a high temperature medium environment, comprising the steps of:
s1) carrying out initial inflation on a nitrogen voltage stabilizer in a system starting stage, and supplementing air into the voltage stabilizer according to requirements in a power operation process; in the starting stage, the nitrogen voltage stabilizer is initially filled with water through the water supplementing pump, and the booster pump continuously supplements water with small flow rate to the loop after the water supplementing pump stops; during the starting stage and the power running process, part of water is discharged through a bypass return pipe so as to maintain the liquid level of the nitrogen pressure stabilizer within an allowable range;
s2) during normal operation, the volume of the nitrogen pressure stabilizer absorbs volume fluctuation caused by power change of a main hot water loop system, the pressure fluctuation is within a specified range, water and gas are not required to be supplemented, when the average temperature of the hot water loop is increased, the water volume of the hot water loop expands, and part of high temperature water is discharged to the nitrogen pressure stabilizer after being cooled by a discharge water heat exchanger;
s3) when the pressure in the nitrogen pressure stabilizer rises above a specified value, opening a bypass pressure reducing valve, discharging certain amount of water to maintain the pressure of the system, reducing the continuous rising trend of the pressure of the system, and reducing the pressure to the specified value;
s4) when the pressure of the nitrogen pressure stabilizer is lower than a specified value, opening the booster pump to supplement water into the nitrogen pressure stabilizer, and supplementing the pressure drop to maintain the pressure within a specified range;
s5) when the water level of the pressure stabilizer exceeds a specified range, opening a backwater isolation valve and a bypass pressure reducing valve to carry out water supplementing and draining to control the liquid level of the nitrogen pressure stabilizer;
s6) before a loop system is started, deoxidizing the desalted water provided by the field by deoxidizing equipment, and then sending the deoxidized water into a water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere; in the shutdown stage of the loop system, wet maintenance agents are injected into the system through the dosing equipment, so that equipment and pipeline corrosion is reduced.
The beneficial effects of this application are: according to the pressure control system and the pressure control method suitable for the high-temperature medium environment, the high-temperature water discharged to the pressure stabilizer is cooled by arranging the discharged water heat exchanger, so that the temperature resistance requirement of equipment in the pressure control system is reduced, and therefore a common 304 stainless steel material instead of a special austenitic stainless steel material can be selected to be used as a main material, and the manufacturing cost of the nitrogen pressure stabilizer is reduced; meanwhile, the nitrogen pressure stabilizer adopts the adjustment means of nitrogen space fluctuation absorption, water supplementing and drainage, air supplementing and exhaust and the like, so that the accuracy of pressure control is greatly improved, the safety is ensured, the process system is simple, the safety and reliability are high, the maintenance is convenient, and the maintenance cost is low.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a system distribution according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The features and capabilities of the present application are described in further detail below in connection with the examples.
As shown in fig. 1, the pressure control system suitable for the high-temperature medium environment comprises a discharge water heat exchanger 1, a nitrogen pressure stabilizer 2, a nitrogen generating device 3 and a water supplementing and pressure regulating device, wherein an inlet of the discharge water heat exchanger is communicated with a main pipeline of a loop system, an outlet of the discharge water heat exchanger is communicated with a water space at the bottom of the nitrogen pressure stabilizer, and high-temperature water discharged to the nitrogen pressure stabilizer is cooled to keep the temperature of a water body of the nitrogen pressure stabilizer stable.
The pressure control function of the pressure safety system is mainly realized by adjusting a nitrogen pressure stabilizer, and the internal structure of the nitrogen pressure stabilizer is divided into an upper nitrogen space and a lower saturated water space, and the pressure of the nitrogen space can be used for indirectly measuring the operating pressure of the system.
The nitrogen generating device is communicated with the top gas space of the nitrogen pressure stabilizer, nitrogen is input into the nitrogen pressure stabilizer, and oxygen in the atmosphere is isolated from being dissolved in water while the pressure is regulated.
The water supplementing and pressure regulating device is communicated with the water space at the bottom of the nitrogen pressure stabilizer and supplements water into the nitrogen pressure stabilizer.
In some alternative embodiments, the water supplementing and pressure regulating device comprises a water tank 4, a booster pump 5 and a water supplementing pump 6, wherein the booster pump and the water supplementing pump are arranged in parallel, the inlets are all communicated with the water tank through water outlet pipes, and the outlets are all communicated with the nitrogen pressure stabilizer through water inlet pipes to maintain the liquid level in the nitrogen pressure stabilizer.
In some alternative embodiments, the water tank further comprises a bypass water return pipe, and two ends of the bypass water return pipe are respectively communicated with the water tank and the water inlet pipe.
In some alternative embodiments, the device also comprises an oxygen removing device 7, and the inlet and the outlet of the oxygen removing device are respectively communicated with the water tank to form self circulation.
In some alternative embodiments, a vent tube is provided at the top of the nitrogen pressurizer in communication with the nitrogen pressurizer headspace for preventing system loop overpressure.
In some alternative embodiments, the deoxidizing device comprises deoxidizing equipment, dosing equipment and nitrogen making equipment, wherein the deoxidizing equipment and the dosing equipment are communicated with the water tank, and deoxidize and dose water in the water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere.
In some alternative embodiments, the inlet of the drain heat exchanger is provided with a drain heat exchanger inlet isolation valve 8 and the outlet of the drain heat exchanger is provided with a drain heat exchanger outlet isolation valve 9.
In some alternative embodiments, the outlets of the booster pump and the make-up pump are provided with a booster check valve 10 and a make-up check valve 11, respectively; the water outlet pipe is provided with a manual valve 12, the water inlet pipe is provided with a backwater isolation valve 13, and the bypass backwater pipe is provided with a bypass pressure reducing valve 14.
In some alternative embodiments, the outlet of the nitrogen generating device is provided with a nitrogen generating device outlet isolation valve 15 and the discharge pipe is provided with a discharge safety valve 16.
Most of the equipment in the pressure control system works at high pressure and normal temperature, and a flange connection mode can be adopted for a pipeline system without severe temperature circulation working conditions in consideration of convenient maintenance.
The control method of the pressure control system comprises the following steps:
s1) carrying out initial inflation on a nitrogen voltage stabilizer in a system starting stage, and supplementing air into the voltage stabilizer according to requirements in a power operation process; in the starting stage, the nitrogen voltage stabilizer is initially filled with water through the water supplementing pump, and the booster pump continuously supplements water with small flow rate to the loop after the water supplementing pump stops; during the starting stage and the power running process, part of water is discharged through a bypass return pipe so as to maintain the liquid level of the nitrogen pressure stabilizer within an allowable range;
s2) during normal operation, the volume of the nitrogen pressure stabilizer absorbs volume fluctuation caused by power change of a main hot water loop system, the pressure fluctuation is within a specified range, water is not required to be supplemented, when the average temperature of the hot water loop is increased, the water volume of the hot water loop expands, and part of high temperature (more than 300 ℃) is cooled (less than 50 ℃) by a discharged water heat exchanger and then is discharged to the nitrogen pressure stabilizer;
s3) when the pressure in the nitrogen pressure stabilizer rises above a specified value, opening a bypass pressure reducing valve, discharging certain amount of water to maintain the pressure of the system, reducing the continuous rising trend of the pressure of the system, and reducing the pressure to the specified value;
s4) when the pressure of the nitrogen pressure stabilizer is lower than a specified value, opening the booster pump to supplement water into the nitrogen pressure stabilizer, and supplementing the pressure drop to maintain the pressure within a specified range;
s5) when the water level of the pressure stabilizer exceeds a specified range, opening a backwater isolation valve and a bypass pressure reducing valve to carry out water supplementing and draining to control the liquid level of the nitrogen pressure stabilizer;
s6) before a loop system is started, deoxidizing the desalted water provided by the field by deoxidizing equipment, and then sending the deoxidized water into a water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere; in the shutdown stage of the loop system, wet maintenance agents are injected into the system through the dosing equipment, so that equipment and pipeline corrosion is reduced.
Claims (10)
1. The pressure control system is characterized by comprising a discharge water heat exchanger, a nitrogen pressure stabilizer, a nitrogen generating device and a water supplementing and pressure regulating device, wherein an inlet of the discharge water heat exchanger is communicated with a main pipeline of a loop system, an outlet of the discharge water heat exchanger is communicated with a water space at the bottom of the nitrogen pressure stabilizer, and high-temperature water discharged to the nitrogen pressure stabilizer is cooled to keep the temperature of a water body of the nitrogen pressure stabilizer stable;
the nitrogen generating device is communicated with the top gas space of the nitrogen voltage stabilizer, nitrogen is input into the nitrogen voltage stabilizer, and oxygen in the atmosphere is isolated from being dissolved in water while the pressure is regulated;
the water supplementing and pressure regulating device is communicated with the water space at the bottom of the nitrogen pressure stabilizer and supplements water in the nitrogen pressure stabilizer.
2. The pressure control system suitable for the high-temperature medium environment according to claim 1, wherein the water supplementing and pressure regulating device comprises a water tank, a booster pump and a water supplementing pump, the booster pump and the water supplementing pump are arranged in parallel, an inlet is communicated with the water tank through a water outlet pipe, an outlet is communicated with the nitrogen pressure stabilizer through a water inlet pipe, and the liquid level in the nitrogen pressure stabilizer is maintained.
3. The pressure control system of claim 2, further comprising a bypass return, wherein two ends of the bypass return are in communication with the water tank and the inlet pipe, respectively.
4. A pressure control system adapted for use in a high temperature medium environment as claimed in claim 3, further comprising a de-aeration device, the inlet and outlet of said de-aeration device being in communication with said tank, respectively, to form a self-circulation.
5. The pressure control system of claim 4, further comprising a vent tube disposed on top of the nitrogen pressurizer in communication with a nitrogen pressurizer headspace.
6. The pressure control system suitable for the high-temperature medium environment according to claim 4 or 5, wherein the deoxidizing device comprises deoxidizing equipment, dosing equipment and nitrogen making equipment, wherein the deoxidizing equipment and the dosing equipment are communicated with the water tank, and deoxidize and dose water in the water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere.
7. The pressure control system of claim 5, wherein the inlet of the drain heat exchanger is provided with a drain heat exchanger inlet isolation valve and the outlet of the drain heat exchanger is provided with a drain heat exchanger outlet isolation valve.
8. The pressure control system of claim 7, wherein the outlets of the booster pump and the water make-up pump are provided with a booster check valve and a water make-up check valve, respectively; the water outlet pipe is provided with a manual valve, the water inlet pipe is provided with a backwater isolation valve, and the bypass backwater pipe is provided with a bypass pressure reducing valve.
9. The pressure control system of claim 8, wherein the nitrogen generator outlet is provided with a nitrogen generator outlet isolation valve, and the discharge pipe is provided with a discharge safety valve.
10. A control method of a pressure control system adapted to a high temperature medium environment according to claim 9, comprising the steps of:
s1) carrying out initial inflation on a nitrogen voltage stabilizer in a system starting stage, and supplementing air into the voltage stabilizer according to requirements in a power operation process; in the starting stage, the nitrogen voltage stabilizer is initially filled with water through the water supplementing pump, and the booster pump continuously supplements water with small flow rate to the loop after the water supplementing pump stops; during the starting stage and the power running process, part of water is discharged through a bypass return pipe so as to maintain the liquid level of the nitrogen pressure stabilizer within an allowable range;
s2) during normal operation, the volume of the nitrogen pressure stabilizer absorbs volume fluctuation caused by power change of a main hot water loop system, the pressure fluctuation is within a specified range, water and gas are not required to be supplemented, when the average temperature of the hot water loop is increased, the water volume of the hot water loop expands, and part of high temperature water is discharged to the nitrogen pressure stabilizer after being cooled by a discharge water heat exchanger;
s3) when the pressure in the nitrogen pressure stabilizer rises above a specified value, opening a bypass pressure reducing valve, discharging certain amount of water to maintain the pressure of the system, reducing the continuous rising trend of the pressure of the system, and reducing the pressure to the specified value;
s4) when the pressure of the nitrogen pressure stabilizer is lower than a specified value, opening the booster pump to supplement water into the nitrogen pressure stabilizer, and supplementing the pressure drop to maintain the pressure within a specified range;
s5) when the water level of the pressure stabilizer exceeds a specified range, opening a backwater isolation valve and a bypass pressure reducing valve to carry out water supplementing and draining to control the liquid level of the nitrogen pressure stabilizer;
s6) before a loop system is started, deoxidizing the desalted water provided by the field by deoxidizing equipment, and then sending the deoxidized water into a water tank; the nitrogen making equipment is communicated with the top of the water tank, and nitrogen is introduced to isolate oxygen in the atmosphere; in the shutdown stage of the loop system, wet maintenance agents are injected into the system through the dosing equipment, so that equipment and pipeline corrosion is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496801.0A CN116400752A (en) | 2023-04-27 | 2023-04-27 | Pressure control system and method suitable for high-temperature medium environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310496801.0A CN116400752A (en) | 2023-04-27 | 2023-04-27 | Pressure control system and method suitable for high-temperature medium environment |
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| CN116400752A true CN116400752A (en) | 2023-07-07 |
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| CN202310496801.0A Pending CN116400752A (en) | 2023-04-27 | 2023-04-27 | Pressure control system and method suitable for high-temperature medium environment |
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