CN117329449A - Radioactive waste gas transfer temporary storage system and control method thereof - Google Patents

Radioactive waste gas transfer temporary storage system and control method thereof Download PDF

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Publication number
CN117329449A
CN117329449A CN202311525020.6A CN202311525020A CN117329449A CN 117329449 A CN117329449 A CN 117329449A CN 202311525020 A CN202311525020 A CN 202311525020A CN 117329449 A CN117329449 A CN 117329449A
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China
Prior art keywords
valve
exhaust
buffer tank
pressure
pipeline
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311525020.6A
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Chinese (zh)
Inventor
杨静洁
张劲松
骆枫
李振臣
孙圣权
陈莉
王小兵
赵乾
杨辉青
王凯
梁毅
严佳兵
王涵之
范椿欣
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Nuclear Power Institute of China
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Nuclear Power Institute of China
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Filing date
Publication date
Application filed by Nuclear Power Institute of China filed Critical Nuclear Power Institute of China
Priority to CN202311525020.6A priority Critical patent/CN117329449A/en
Publication of CN117329449A publication Critical patent/CN117329449A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F17D1/065—Arrangements for producing propulsion of gases or vapours
    • F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
    • F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pipeline Systems (AREA)

Abstract

The invention relates to the technical field of waste gas transportation, in particular to a radioactive waste gas transportation temporary storage system and a control method thereof, wherein the radioactive waste gas transportation temporary storage system comprises a buffer tank, a diaphragm compressor, a waste gas transportation pipeline, a gas delivery pipeline, a feeding pipeline, a pressurized exhaust pipeline and a control interlocking loop; the invention can be pressurized by the diaphragm compressor when the exhaust pressure of the upstream system is lower, and can be directly discharged by the safety valve when the exhaust pressure of the upstream system is higher, thereby meeting the air supply requirement of the waste gas treatment process section and improving the applicability and flexibility of the transfer process section.

Description

Radioactive waste gas transfer temporary storage system and control method thereof
Technical Field
The invention relates to the technical field of waste gas transfer, in particular to a radioactive waste gas transfer temporary storage system and a control method thereof.
Background
Currently, radioactive exhaust gas generated by nuclear facilities enters an exhaust gas treatment system through exhaust pressure or suction, and the radionuclide in the exhaust gas is continuously decayed until being discharged into the environment by adopting a storage decay or retention adsorption technology. The storage decay tank and the retention adsorption bed are normal pressure equipment, and are provided with nozzles for feeding, exhausting, draining and the like, and the pressure grade of the storage decay tank is adjusted according to the upstream exhaust gas quantity and the factory space requirement. When the exhaust working condition of the upstream system is ambiguous or the upstream system adopts micro negative pressure operation, the conventional transfer method is insufficient for transferring the waste gas to the next process section for treatment, and the pressurized storage of the waste gas cannot be realized, so that the problems of large occupation of a waste gas storage tank, high maintenance cost and the like are caused.
Disclosure of Invention
The invention aims to solve the technical problems that the upstream exhaust working condition is unstable or the upstream is a waste gas transfer difficulty under the condition of a micro negative pressure system and the like, and provides a radioactive waste gas transfer temporary storage system and a control method thereof, so that automatic transfer of radioactive waste gas is realized.
The invention is realized by the following technical scheme:
a radioactive waste transfer register system comprising:
the buffer tank is provided with a feed inlet and an air outlet;
a diaphragm compressor;
the air inlet of the waste gas transfer pipeline is communicated with the air outlet of the buffer tank, the air outlet of the waste gas transfer pipeline is communicated with the diaphragm compressor, and an exhaust valve is arranged on the waste gas transfer pipeline;
an air inlet of the air delivery pipeline is communicated with an air outlet of an upstream system;
the air inlet of the feeding pipeline is communicated with the air outlet of the air supply pipeline, the air outlet of the feeding pipeline is communicated with the feeding inlet of the buffer tank, and a feeding valve is arranged on the feeding pipeline;
the air inlet of the pressurized exhaust pipeline is communicated with the air outlet of the air supply pipeline, and the pressurized exhaust pipeline is provided with a safety valve;
the control end of the control interlocking loop is respectively connected with the diaphragm compressor, the exhaust valve and the feeding valve point;
the air outlet of the pressurized exhaust pipeline and the air outlet of the diaphragm compressor are both communicated to the next process section.
Specifically, the buffer tank is further provided with a liquid outlet, a waste liquid transfer pipeline is connected to the liquid outlet, a liquid discharge valve is arranged on the waste liquid transfer pipeline, and the liquid discharge valve is electrically connected with the control end of the control interlocking loop.
Optionally, the feed inlet of the buffer tank and the liquid outlet of the buffer tank are arranged on the upper portion of the buffer tank, and the liquid outlet of the buffer tank is arranged on the bottom of the buffer tank.
Specifically, the control interlock circuit includes: the first pressure sensor, the second pressure sensor, the third pressure sensor and the PLC;
the first pressure sensor is used for detecting the exhaust pressure in the air supply pipeline;
the second pressure sensor is used for detecting the exhaust pressure in the exhaust pipeline with pressure;
the third pressure sensor is used for detecting the exhaust pressure in the buffer tank;
the first pressure sensor, the second pressure sensor, the third pressure sensor, the feeding valve, the exhaust valve and the diaphragm compressor are all electrically connected with the PLC.
Further, the control interlock loop further includes: the continuous liquid level detector is used for detecting the liquid level height of the waste liquid in the buffer tank.
Optionally, a check valve is disposed on the air supply line.
A control method of a radioactive waste gas transfer temporary storage system comprises the following steps:
setting a state judgment pressure value;
acquiring a first pressure value in the gas delivery pipeline through a first pressure sensor, and judging whether the first pressure value is less than a state judgment pressure value; if yes, executing a control method corresponding to the low-voltage state; and if not, executing a control method corresponding to the high-voltage state.
Specifically, the control method corresponding to the low-pressure state comprises the following steps:
a1, setting a negative pressure lower limit pressure value and a negative pressure upper limit pressure value of a buffer tank, and ensuring that a check valve is in a usable state;
a2, judging the state of the feed valve, and controlling the feed valve to be fully closed if the feed valve is in a non-fully closed state; if the feed valve is in a fully closed state, controlling to open the exhaust valve;
a3, judging the state of the exhaust valve, and controlling the exhaust valve to be fully opened if the exhaust valve is in a non-fully opened state; if the exhaust valve is in a full-open state, controlling to start the diaphragm compressor;
a4, acquiring a third pressure value in the buffer tank through a third pressure sensor, and judging whether the third pressure value is less than or equal to a negative lower limit pressure value; if not, controlling the diaphragm compressor to continuously pump out the air in the buffer tank; if yes, controlling to close the exhaust valve;
a5, opening a feed valve, and judging whether a third pressure value is more than or equal to a negative pressure upper limit pressure value; if not, the feeding valve is controlled to be continuously opened; if yes, controlling to close the feed valve;
a6, repeating the steps A2-A5.
Specifically, the control method corresponding to the high-voltage state comprises the following steps: the check valve and the safety valve are ensured to be in a usable state, the feed valve is closed, and the gas in the gas supply pipeline is directly transported to the next process section through the safety valve.
Further, the control method further includes a waste liquid transport method including:
setting a liquid level upper limit value, and acquiring the liquid level of the waste liquid in the buffer tank through a continuous liquid level detector; if the liquid level of the waste liquid is more than the upper limit value of the liquid level, the feeding valve is controlled to be closed;
and controlling to open a liquid discharge valve to discharge the waste liquid to a waste liquid treatment system.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the buffer tank, the diaphragm compressor and the safety valve are arranged, and the on-off of different gas paths is controlled through the valves, so that the pressure can be increased through the diaphragm compressor when the exhaust pressure of an upstream system is low, and the exhaust is directly carried out through the safety valve when the exhaust pressure of the upstream system is high, thereby meeting the gas supply requirement of an exhaust gas treatment process section and improving the applicability and flexibility of a transfer process section.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a system for temporary storage of radioactive waste gas transfer according to the present invention.
FIG. 2 is a flow chart of a control method of a radioactive waste transfer temporary storage system according to the present invention.
Reference numerals: 1-check valve, 2-first pressure sensor, 3-relief valve, 4-second pressure sensor, 5-feed valve, 6-third pressure sensor, 7-continuous liquid level monitor, 8-discharge valve, 9-diaphragm compressor, 10-drain valve, 11-gas feed line, 12-feed line, 13-pressure exhaust line, 14-waste gas transfer line, 15-waste liquid transfer line, 16-buffer tank.
Detailed Description
The present invention will be described in further detail with reference to the drawings and embodiments, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the invention.
It should be further noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
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.
Embodiments of the present invention and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, a radioactive waste transfer temporary storage system includes: buffer tank 16, membrane compressor 9, exhaust gas transfer line 14, air supply line 11, feed line 12, pressurized exhaust line 13 and control interlock circuit.
The buffer tank 16 is provided with a feed inlet and an air outlet, the air inlet of the waste gas transfer pipeline 14 is communicated with the air outlet of the buffer tank 16, the air outlet of the waste gas transfer pipeline 14 is communicated with the diaphragm compressor 9, the waste gas transfer pipeline 14 is provided with an exhaust valve 8, the air inlet of the air supply pipeline 11 is communicated with the air outlet of an upstream system, the air inlet of the feed pipeline 12 is communicated with the air outlet of the air supply pipeline 11, the air outlet of the feed pipeline 12 is communicated with the feed inlet of the buffer tank 16, the feed pipeline 12 is provided with a feed valve 5, the air inlet of the pressure exhaust pipeline 13 is communicated with the air outlet of the air supply pipeline 11, and the pressure exhaust pipeline 13 is provided with a safety valve 3; the control end of the control interlocking loop is respectively connected with the diaphragm compressor 9, the exhaust valve 8 and the feeding valve 5, and the air outlet of the exhaust pipeline 13 with pressure and the air outlet of the diaphragm compressor 9 are both communicated with the next process section.
The gas supply line 11 is directly connected to the exhaust port of the upstream system, and the radioactive waste gas discharged from the upstream system enters the feed line 12 or the pressurized exhaust line 13 according to the subsequent selection, and the gas supply line 11 is provided with a check valve 1 in order to prevent the backflow of the radioactive gas.
If the pressure of the exhaust gas discharged from the upstream system is low, pressurization can be performed by the diaphragm compressor 9; if the exhaust gas pressure discharged from the upstream system is high, the discharge can be performed directly through the relief valve 3.
In addition, part of the liquid may be entrained in the exhaust gas discharged from the upstream system, so in order to avoid the liquid entering the diaphragm compressor 9, the buffer tank 16 is further provided with a liquid outlet, a waste liquid transfer line 15 is connected to the liquid outlet, and a liquid discharge valve 10 is arranged on the waste liquid transfer line 15, and the liquid discharge valve 10 is electrically connected to a control end of the control interlock loop. The entrained liquid will collect in the buffer tank 16 and, after reaching a set point, be discharged through the waste transfer line 15.
Therefore, in order to allow gas and liquid to conveniently enter and exit the buffer tank 16, a feed port of the buffer tank 16 and a liquid outlet of the buffer tank 16 are provided at an upper portion of the buffer tank 16, and a liquid outlet of the buffer tank 16 is provided at a bottom portion of the buffer tank 16.
In order to enable automatic control of the whole device, the setting control interlock circuit comprises: a first pressure sensor 2, a second pressure sensor 4, a third pressure sensor 6 and a PLC controller;
the first pressure sensor 2 is used for detecting the exhaust pressure in the gas supply line 11;
the second pressure sensor 4 is used for detecting the exhaust pressure in the exhaust line 13 with pressure;
the third pressure sensor 6 is for detecting the exhaust pressure in the buffer tank 16;
the first pressure sensor 2, the second pressure sensor 4, the third pressure sensor 6, the feed valve 5, the exhaust valve 8 and the diaphragm compressor 9 are all electrically connected with the PLC.
A continuous level detector for detecting the level of the waste liquid in the buffer tank 16.
The air pressure can be detected by a plurality of pressure sensors, and then the corresponding exhaust scheme is selectively executed.
Example two
As shown in fig. 2, the present embodiment provides a control method for a radioactive waste transfer temporary storage system according to the first embodiment, including:
the state determination pressure value is set, typically, the safety value of the safety valve 3, and it is needless to say that the state determination pressure value is satisfied by adjusting or replacing the safety valve 3 in practice.
Acquiring a first pressure value in the gas supply pipeline 11 through the first pressure sensor 2, and judging whether the first pressure value is less than a state judgment pressure value; if yes, executing a control method corresponding to the low-voltage state; and if not, executing a control method corresponding to the high-voltage state.
The control method corresponding to the low-voltage state comprises the following steps:
a1, setting a negative lower limit pressure value and a negative upper limit pressure value of the buffer tank 16, and ensuring that the check valve 1 is in a usable state;
a2, judging the state of the feed valve 5, and controlling the feed valve 5 to be fully closed if the feed valve 5 is in a non-fully closed state; if the feed valve 5 is in the fully closed state, the exhaust valve 8 is controlled to be opened;
a3, judging the state of the exhaust valve 8, and controlling the exhaust valve 8 to be fully opened if the exhaust valve 8 is in a non-fully opened state; if the exhaust valve 8 is in a fully opened state, controlling to start the diaphragm compressor 9;
a4, acquiring a third pressure value in the buffer tank 16 through a third pressure sensor 6, and judging whether the third pressure value is less than or equal to a negative lower limit pressure value; if not, controlling the diaphragm compressor 9 to continuously pump out the air in the buffer tank 16; if yes, controlling to close the exhaust valve 8;
a5, opening the feed valve 5, and judging whether a third pressure value is more than or equal to a negative pressure upper limit pressure value; if not, the feeding valve 5 is controlled to be continuously opened; if yes, controlling to close the feed valve 5;
a6, repeating the steps A2-A5.
The feed valve 5, the exhaust valve 8, the diaphragm compressor 9, the third pressure sensor 6, etc. are all controlled by a PLC controller.
That is, the exhaust gas in the buffer tank 16 is discharged to be in a negative pressure state, and then the low-pressure exhaust gas is collected into the buffer tank 16 by opening the feed valve 5, and after reaching the negative upper limit pressure value, the exhaust valve 8 is opened by closing the feed valve 5, and the exhaust gas in the buffer tank 16 is discharged by the diaphragm compressor 9. The exhaust gas which meets the pressure of the next process stage can then be discharged through the diaphragm compressor 9.
The control method corresponding to the high-voltage state comprises the following steps: the check valve 1 and the safety valve 3 are ensured to be in a usable state, the feed valve 5 is closed, the gas in the gas supply pipeline 11 is directly transported to the next process section through the safety valve 3, and in practice, the pressure changes of the gas supply pipeline 11 and the pressure exhaust pipeline 13 need to be detected in real time through the first pressure sensor 2 and the second pressure sensor 4, so that the waste gas with overhigh output pressure is avoided.
In addition, in order to discharge the waste liquid in the buffer tank 16, the control method further includes a waste liquid transfer method including:
setting an upper limit value of the liquid level, and acquiring the liquid level of the waste liquid in the buffer tank 16 through a continuous liquid level detector; if the liquid level of the waste liquid is more than the upper limit value of the liquid level, the feeding valve 5 is controlled to be closed;
the drain valve 10 is controlled to be opened to drain the waste liquid to the waste liquid treatment system.
In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the present application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the invention. Other variations or modifications of the above-described invention will be apparent to those of skill in the art, and are still within the scope of the invention.

Claims (10)

1. A radioactive waste transfer temporary storage system, comprising:
a buffer tank (16) having a feed port and an air outlet port;
a diaphragm compressor (9);
an exhaust gas transfer pipeline (14), wherein an air inlet of the exhaust gas transfer pipeline is communicated with an air outlet of the buffer tank (16), an air outlet of the exhaust gas transfer pipeline (14) is communicated with the diaphragm compressor (9), and an exhaust valve (8) is arranged on the exhaust gas transfer pipeline (14);
a gas feed line (11) having a gas inlet communicating with a gas outlet of an upstream system;
the air inlet of the feeding pipeline (12) is communicated with the air outlet of the air supply pipeline (11), the air outlet of the feeding pipeline (12) is communicated with the feed inlet of the buffer tank (16), and the feeding pipeline (12) is provided with a feeding valve (5);
the air inlet of the pressurized exhaust pipeline (13) is communicated with the air outlet of the air supply pipeline (11), and the pressurized exhaust pipeline (13) is provided with a safety valve (3);
the control end of the control interlocking loop is respectively connected with the diaphragm compressor (9), the exhaust valve (8) and the feeding valve (5) in a point manner;
the air outlet of the pressurized exhaust pipeline (13) and the air outlet of the diaphragm compressor (9) are both communicated to the next process section.
2. The radioactive waste transfer temporary storage system according to claim 1, wherein the buffer tank (16) is further provided with a liquid outlet, a waste transfer line (15) is connected to the liquid outlet, a liquid discharge valve (10) is arranged on the waste transfer line (15), and the liquid discharge valve (10) is electrically connected with a control end of the control interlock loop.
3. The radioactive waste transfer temporary storage system according to claim 2, wherein the feed inlet of the buffer tank (16) and the liquid outlet of the buffer tank (16) are disposed at the upper part of the buffer tank (16), and the liquid outlet of the buffer tank (16) is disposed at the bottom of the buffer tank (16).
4. The radioactive waste transfer temporary storage system of claim 2, wherein the control interlock loop comprises: the device comprises a first pressure sensor (2), a second pressure sensor (4), a third pressure sensor (6) and a PLC controller;
the first pressure sensor (2) is used for detecting the exhaust pressure in the air supply pipeline (11);
the second pressure sensor (4) is used for detecting the exhaust pressure in the exhaust line (13) with pressure;
the third pressure sensor (6) is used for detecting the exhaust pressure in the buffer tank (16);
the first pressure sensor (2), the second pressure sensor (4), the third pressure sensor (6), the feed valve (5), the exhaust valve (8) and the diaphragm compressor (9) are all electrically connected with the PLC.
5. The radioactive waste transfer temporary storage system of claim 4, wherein the control interlock loop further comprises: and the continuous liquid level detector is used for detecting the liquid level height of the waste liquid in the buffer tank (16).
6. The radioactive waste transfer temporary storage system according to claim 4, wherein the air supply line (11) is provided with a check valve (1).
7. A control method based on a radioactive waste transfer register system as claimed in claim 5 or 6, comprising:
setting a state judgment pressure value;
acquiring a first pressure value in the gas delivery pipeline (11) through a first pressure sensor (2), and judging whether the first pressure value is less than a state judgment pressure value; if yes, executing a control method corresponding to the low-voltage state; and if not, executing a control method corresponding to the high-voltage state.
8. The method of claim 7, wherein the control method for the low-pressure state comprises:
a1, setting a negative pressure lower limit pressure value and a negative pressure upper limit pressure value of a buffer tank (16), and ensuring that a check valve (1) is in a usable state;
a2, judging the state of the feed valve (5), and controlling the feed valve (5) to be fully closed if the feed valve (5) is in a non-fully closed state; if the feed valve (5) is in a fully closed state, controlling to open the exhaust valve (8);
a3, judging the state of the exhaust valve (8), and controlling the exhaust valve (8) to be fully opened if the exhaust valve (8) is in a non-fully opened state; if the exhaust valve (8) is in a full-open state, controlling to open the diaphragm compressor (9);
a4, acquiring a third pressure value in the buffer tank (16) through a third pressure sensor (6), and judging whether the third pressure value is less than or equal to a negative lower limit pressure value or not; if not, controlling the diaphragm compressor (9) to continuously pump out the air in the buffer tank (16); if yes, controlling to close the exhaust valve (8);
a5, opening a feed valve (5), and judging whether a third pressure value is more than or equal to a negative pressure upper limit pressure value; if not, the feeding valve (5) is controlled to be continuously opened; if yes, controlling to close the feed valve (5);
a6, repeating the steps A2-A5.
9. The method of claim 7, wherein the method of controlling the high-pressure state comprises: ensuring that the check valve (1) and the safety valve (3) are in a usable state, closing the feed valve (5), and transferring the gas in the gas supply pipeline (11) to the next process section directly through the safety valve (3).
10. The method of claim 7, further comprising a waste fluid transfer method comprising:
setting a liquid level upper limit value, and acquiring the liquid level of the waste liquid in the buffer tank (16) through a continuous liquid level detector; if the liquid level of the waste liquid is more than the upper limit value of the liquid level, the feeding valve (5) is controlled to be closed;
and controlling to open a liquid discharge valve (10) to discharge the waste liquid to a waste liquid treatment system.
CN202311525020.6A 2023-11-14 2023-11-14 Radioactive waste gas transfer temporary storage system and control method thereof Pending CN117329449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311525020.6A CN117329449A (en) 2023-11-14 2023-11-14 Radioactive waste gas transfer temporary storage system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311525020.6A CN117329449A (en) 2023-11-14 2023-11-14 Radioactive waste gas transfer temporary storage system and control method thereof

Publications (1)

Publication Number Publication Date
CN117329449A true CN117329449A (en) 2024-01-02

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Application Number Title Priority Date Filing Date
CN202311525020.6A Pending CN117329449A (en) 2023-11-14 2023-11-14 Radioactive waste gas transfer temporary storage system and control method thereof

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